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
3.3MB
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MD5
280cdb0f182b4fca9cd0fd87ab0f9551
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SHA1
b7631a3d0bc305c70f1a0711ca0d3b03d82252ec
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SHA256
88641b449e8a26c6468058f54acf474225b571dab55a921caed63020390b6896
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SHA512
d35ec454f18987a700506e1585cfd313906a3e2ab868040b38bba3682ab61b78dc4eec224c23fb8309a8cbd6ae664299940ec8d00afbc0ffaf1a248230c1c8cd
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SSDEEP
49152:56LFXL5Z8hlPKxXavRZbki7yEI2hBqTHHB72eh2NT1:56p5Z8hlPKxXavRZIi7vj
Malware Config
Extracted
quasar
1.4.1
SKIDS
147.185.221.22:6712
1051d457-43fe-4be3-87a0-52f2e36a87aa
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encryption_key
F387A0FF28E4F7F4D7B4E353EB2E71F75D3FB5C0
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install_name
Windows Host Process.exe
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log_directory
Windows-Logs
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reconnect_delay
3000
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startup_key
Windows Host Process
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subdirectory
Windows
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: 175KB - Virtual size: 175KB
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