Behavioral task
behavioral1
Sample
Yashma ransomware builder v1.2.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Yashma ransomware builder v1.2.exe
Resource
win10v2004-20241007-en
General
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Target
Yashma ransomware builder v1.2.exe
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Size
826KB
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MD5
20a7eea3f65edd41df1e3bbce7d2b674
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SHA1
44a9d957a24ab0e9f2066e9dfc4da8f9d46f0025
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SHA256
e505fe2a77857ac94c657999533631289dc76a1c62c73169232dfcd7a25990a9
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SHA512
bf3189616f1ed3ca3059fdbb9ea72c38a2e32804b0c5919f058d0798b928c4fd1ce3d015a4366c3f689bcfaa10d2f1fcd3a169c9e3ec6a68f4abdc47ef386fb0
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SSDEEP
6144:pMPUfXnG2omFLhFLuFL6FL6aGMVFLQYFWD/:pL3GcQZ
Malware Config
Signatures
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Chaos Ransomware 1 IoCs
resource yara_rule sample family_chaos -
Chaos family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Yashma ransomware builder v1.2.exe
Files
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Yashma ransomware builder v1.2.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
mscoree
_CorExeMain
Sections
.text Size: 718KB - Virtual size: 718KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 106KB - Virtual size: 106KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ