Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240729-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e84825f20d531199cefcdf8f0ac0a5bf
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SHA1
e016a14c992c56ef916da2465211ebbfee8502c1
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SHA256
9c881a05c58c18e795f9f687804c8a4f13244744bbcd0b1bd07856cbd42a378d
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SHA512
d9b719ec9853d8c9aaeb8e597082cb69c9a338d4f5dd3685e49841dc93f03e63f67e4f21ec59fa10b561c412cbde124d589f7b1cff1525002f3b78eaf4995fab
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SSDEEP
49152:SvyI22SsaNYfdPBldt698dBcjHEYhBbRjPLoGdzkTHHB72eh2NT:Svf22SsaNYfdPBldt6+dBcjHEYh7Tj
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.2.19:4782
112650ca-1287-418e-b9d3-1664d22cb8f1
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encryption_key
CA3612A22558F9AC4A3F0665F4EF083FB1D45393
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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