Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240704-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
9a4f3b0223e0bcb90d5a08afdae6a169
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SHA1
b8ea3a64121a47f7a7abc73fc9a39d912b31a724
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SHA256
031b3b1935b0eac9273bafb8b20484be97a1c3f9ea1bb611315042b32168f104
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SHA512
38ab6b70078807bc8c56f5c004ae4ef4a40690ec26bc896213a158765530caec5812b556a5555037ac986175fb1d4d588f1a982dd5e383a8c5734783507f6601
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SSDEEP
49152:SvHI22SsaNYfdPBldt698dBcjHJwRJ6cbR3LoGdFgTHHB72eh2NT:Svo22SsaNYfdPBldt6+dBcjHJwRJ6m
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.70:4782
34828de8-c350-4dd4-85c9-16051c0443f7
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encryption_key
2F1B645695C7578786A6BD1B6CD3966DFF24BC11
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install_name
sigmaexecutor.exe.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
WIndows Updater
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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-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
Password: 1234
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