Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
Client-built.exe
Resource
android-x86-arm-20240624-en
Behavioral task
behavioral4
Sample
Client-built.exe
Resource
android-x64-20240624-en
Behavioral task
behavioral5
Sample
Client-built.exe
Resource
android-x64-arm64-20240624-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
786abdcb703d20e3de3bf5a379d81a14
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SHA1
8e14e12df03ed017e2dd98fe1b00d4869ceacac4
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SHA256
f8e5cfd63bc1fafc14772f29cfba051516776ce36ea054dcff65f46146b2a3b1
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SHA512
28886a95fde73cc6bbf4252374a50979f893ba12d9ac92f95a40c46d5a9ef85dde436bf89a09eb84a7380d799b8ff59e50de7fd192ff17e4d7884d973fa39fe9
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SSDEEP
49152:rvht62XlaSFNWPjljiFa2RoUYIYNi3Rar7loGdAxALTHHB72eh2NT:rvL62XlaSFNWPjljiFXRoUYIL3sH
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.46:4782
5beee952-b6db-411d-a01f-ad2f22709cbe
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encryption_key
588523317381A841ECE4E6415CCED796AA0FA544
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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
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