Behavioral task
behavioral1
Sample
loader.exe
Resource
win7-20240221-en
General
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Target
loader.exe
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Size
231KB
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MD5
c534087d8b0da713f69ff7674465bb17
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SHA1
f2ecb66437aa0ec06cce908428b6b891aed74071
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SHA256
9bfbe65dc852646119cde7e50ba948d7fae6d80f2bc6483273478f398a726f97
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SHA512
f7165e561a0f76b524e3db552e09caf44f3ef5200934e5de45163df386a0d769674148e741107acf5b92aa4b9e34c54cc5582d955da3892dc5986aef51bf4815
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SSDEEP
6144:xloZMArIkd8g+EtXHkv/iD434SD34QWRJ6KyvSgR1EPab8e1m0i:DoZHL+EP8oE34QWRJ63vSgR1E+m
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1216116533479346246/GCn9E-FI2n_nCpNoEWOQeSmsFZHsV_6zisdplLLN7TeuZDUQAAOT92vHBBSjr3uvmeYM
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource loader.exe
Files
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loader.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
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 228KB - Virtual size: 228KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
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