Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
7e1ed4c0bddfcd9753fa8a34369d2a09
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SHA1
a72002b3e87c94524bb777fc50aadcd444597b28
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SHA256
0d0646d4f062fab91f6dbcbcc5412e6ef550306b1a49e2353bc37fd24aa4660e
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SHA512
cbcc8efa4d68e3e993dd0b8951d4e4fe0930d267ab99f0ad2f03a89e8f4d119210dccd4c5d4ad2b15d14125e852ef464564d6a88a41eaa936f6a6f2272123ff3
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SSDEEP
49152:CvyI22SsaNYfdPBldt698dBcjHHUb7ReaoGdk8THHB72eh2NT:Cvf22SsaNYfdPBldt6+dBcjHHUb7RJ
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.77:4782
e819f327-90a2-4d90-a826-8b38a9c4f3d5
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encryption_key
EFEBD005E03B8B8669985D9A167E2BEF9FFCA477
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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
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