Behavioral task
behavioral1
Sample
cmclient.exe
Resource
win7-20240903-en
General
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Target
cmclient.exe
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Size
227KB
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MD5
2ff5eea0426612b967301396523c9835
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SHA1
af092e6d35d0c0c09d07102fb7e4416459b3d056
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SHA256
d36f3b379bcafb2f206a5dc18297c0c0fa0fa6afb44f7640da54cd809051b24c
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SHA512
d442d98abd61aa7f551e3309028e303c4390ab54bb94149d8bf0022b7faab1d70e40c66875f8d997e2203964dc8213084d50b108e088af5b433dce2c225f7a3c
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SSDEEP
6144:+loZM+rIkd8g+EtXHkv/iD46NdMiAfbokxUyzzqZYw8e1m9Qi:ooZtL+EP86NdMiAfbokxUyzzqfWJ
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1281266577064595527/B_5Sh3QVnIz_pnsyGmf0PUMl-kPismq8ChthkRV0DXLIezBCbZG0RnaMiwlvjsEyFy6c
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 cmclient.exe
Files
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cmclient.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: 224KB - Virtual size: 224KB
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