Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240611-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
4f56c5c10fd6d558874a09e5d4dbdffd
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SHA1
5b9692b0cfc0da65752a7c6e98528a49ef1b17b9
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SHA256
0a1af9ad6684d877f7c58b00bec90875ccfd709f547fe396a87a9c26e881977b
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SHA512
699ff682370ee44a41af76686435f41682910d1291fbe159570f51e1aed05331dfce20074b3d5cd5937dfe6a8db651f8a4f320b4bf2fe2f38d585b8d4b95c8b4
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SSDEEP
49152:GvnI22SsaNYfdPBldt698dBcjHnKmmmmzzRoGdJCTHHB72eh2NT:GvI22SsaNYfdPBldt6+dBcjHKmmh
Malware Config
Extracted
quasar
1.4.1
Office04
86.137.1.84:4782
adc301f6-35ca-4636-b286-ad2aef63f877
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encryption_key
54B7AB1A151267275EF24D335CE7E3B6ABDDC53E
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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
Microsoft Launcher Task Manager
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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
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