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Merged
merged 3 commits into from
Sep 2, 2025
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Merged

Add AuraStealer yara #2688

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Add AuraStealer yara
enzok Aug 29, 2025
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AuraStealer monitor yara
enzok Sep 2, 2025
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enzok Sep 2, 2025
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29 changes: 29 additions & 0 deletions analyzer/windows/data/yara/AuraStealer.yar
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
rule AuraStealerBypass
{
meta:
author = "enzok"
description = "Bypass AuraStealer"
cape_options = "bp0=$antivm1+3,action0=skip,count=0"
packed = "a9c47f10d5eb77d7d6b356be00b4814a7c1e5bb75739b464beb6ea03fc36cc85"
strings:
$antivm1 = {39 04 11 0f 94 C3 8B 44 ?? ?? 85 C0} //+3, skip
$conf = {8D BE ?? 00 00 00 68 00 40 00 00 5? 5? FF D1 83 C4 ?? 8B 07 8B 57 04 29 C2}
$keyexpansion = {31 C0 8A 1C 82 88 1C 81 8A 5C 82 01 88 5C 81 01 8A 5C 82 02 88 5C 81 02 8A 5C 82 03 88 5C 81 03 4? 83 F8 08 75 ?? B? 08 00 00 00}
condition:
all of them
}

rule AuraStealerConfig
{
meta:
author = "enzok"
description = "AuraStealer Config"
cape_options = "bp1=$conf*-1,action1=string:eax,count=1,hc1=1,typestring=AuraStealer Config"
packed = "a9c47f10d5eb77d7d6b356be00b4814a7c1e5bb75739b464beb6ea03fc36cc85"
strings:
$conf = {8D BE ?? 00 00 00 68 00 40 00 00 5? 5? FF D1 83 C4 ?? 8B 07 8B 57 04 29 C2}
$antivm1 = {39 04 11 0f 94 C3 8B 44 ?? ?? 85 C0}
$keyexpansion = {31 C0 8A 1C 82 88 1C 81 8A 5C 82 01 88 5C 81 01 8A 5C 82 02 88 5C 81 02 8A 5C 82 03 88 5C 81 03 4? 83 F8 08 75 ?? B? 08 00 00 00}
condition:
all of them
}
18 changes: 18 additions & 0 deletions data/yara/CAPE/AuraStealer.yar
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
rule AuraStealer
{
meta:
author = "enzok"
description = "AuraStealer Payload"
cape_type = "AuraStealer Payload"
unpacked = "a9c47f10d5eb77d7d6b356be00b4814a7c1e5bb75739b464beb6ea03fc36cc85"
packed = "bac52ffc8072893ff26cdbf1df1ecbcbb1762ded80249d3c9d420f62ed0dc202"
strings:
$conf = {8D BE ?? 00 00 00 68 00 40 00 00 5? 5? FF D1 83 C4 ?? 8B 07 8B 57 04 29 C2}
$key1 = {FF D2 8B 2B 8D 75 ?? 8B 5D ?? 33 5D ?? 8D 45}
$key2 = {89 0B 89 F9 5? 5? 5? E8 [4] 8B 3F 8D 6F 38 8B 77 30 33 77 34 8D 47 20 8D 4C 24 ?? 89 FA 5? E8}
$keyexpansion = {31 C0 8A 1C 82 88 1C 81 8A 5C 82 01 88 5C 81 01 8A 5C 82 02 88 5C 81 02 8A 5C 82 03 88 5C 81 03 4? 83 F8 08 75 ?? B? 08 00 00 00}
$antivm2 = {8B 43 04 8B 0D [4] 3B 81 [4] B? [2] 00 00 B? [2] 00 00 0F 44 D1 85 C0 0F 44 D1 8B 8A [4] 03 8A [4] FF E1 31 FF EB ?? 8B 78 0C 33 78 10 B? [4] 03 05 [4] FF D0}
$antivm1 = {39 04 11 0f 94 C3 8B 44 ?? ?? 85 C0}
condition:
3 of them
}
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