Behavioral task
behavioral1
Sample
Client.exe
Resource
win7-20240903-en
General
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Target
Client.exe
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Size
348KB
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MD5
4ae0072b64d5fd0d3487aa9471170c88
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SHA1
bd0e8c22c8bc30d653552d79860948302bf6d964
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SHA256
0e9cf144db889d734e8cd7bf4a7fe7fbfce2b0e4a1811e28529b8fef441bfef8
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SHA512
222c28a9d4cb828b2cf72a089a75d7250aaf7d6b7bf0243e04e932855e263f0234abd27d09a75562db58bb2008bddca7055336df9ca05dc877736e18c1dab64f
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SSDEEP
6144:mrNHXf500MvKRH2aWx3bp91O+mCWYOvNlRkiyZK:wd50gRSj1jEYOvtkiwK
Malware Config
Extracted
quasar
1.3.0.0
Office04
51.79.176.188:4782
QSR_MUTEX_VpymbOpr3PCDDO1MrF
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encryption_key
UHc26cHDYhemjvStOeoP
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client.exe
Files
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Client.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: 344KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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