Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20231023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
488550eeb4ae87c8f9510e04e222261d
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SHA1
18c1785375af65ec82a161d13354656282412803
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SHA256
6f4dd3d2ea6b1310b9c9e2063aba85396ea82e63f777a5dd5b42dac67c0ae630
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SHA512
4ea8274a28e8ee68633b5ebd07e68916d80d9d807ee62c3700f9cfb5bd990ba6c88b8ac7bdac893964139ea9a949a2ee092334d45b48fbe590c1345ada594514
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SSDEEP
49152:fvSI22SsaNYfdPBldt698dBcjHslRJ6sbR3LoGd5/THHB72eh2NT:fv/22SsaNYfdPBldt6+dBcjHslRJ62
Malware Config
Extracted
quasar
1.4.1
God
88.209.197.253:4782
5b9901b6-5e69-4eaa-a9f2-55ce43b72785
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encryption_key
CEAEA9FD2F3E18352164BB4D9A6F56EFF5E2D896
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install_name
COM Surrogate.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Update
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subdirectory
System32
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 2KB
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