Behavioral task
behavioral1
Sample
Client-buailt.exe
Resource
win7-20240221-en
General
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Target
Client-buailt.exe
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Size
3.3MB
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MD5
67058a89ce6f3786bc28af9962d6202d
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SHA1
57b66752526058f244ed0802d771b0b4d70432a9
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SHA256
ee1544b6bb0a35c74391f821b94208443754ac5f7e01f03bc369eac3dd70b32d
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SHA512
98a0cc78d49cba94cc5edd2804697391861cd0192ce10aeb93223ad05046a1418d1380c3a3cd7a1e17f0ab290e0a10cd60d3f0e8959ca4783d2eef7460a8ce62
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SSDEEP
49152:qv+I22SsaNYfdPBldt698dBcjHQfnk9hbvJULoGdP7bTHHB72eh2NT/ZqS:qvz22SsaNYfdPBldt6+dBcjHBhA
Malware Config
Extracted
quasar
1.4.1
Office01
198.7.62.204:4782
192.168.1.1:4782
02b9c972-8b55-4d55-b7c4-09a1f00ff400
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encryption_key
5BF0703F288C43118835CAF4D1A6879C29016FB3
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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
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-buailt.exe
Files
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Client-buailt.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: 150KB - Virtual size: 150KB
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