Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
Client-built.exe
Resource
win10v2004-20240802-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
771320cba78821e9c290263827e4d32a
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SHA1
9a39d6397eaf5e44a51d99a246a313decb113907
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SHA256
317b2e1eb9a1d427e165f38f2a44bd90329b729de3f7a2d19c511e023eab73a8
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SHA512
d14b207cfacdbf3bc1b2516ed677e83ace171258995f4a85dc0f79aecd296126d76fa02c4c28fc9983bece819c528f0e6ac43225cb635c1df37070a3da8adec1
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SSDEEP
49152:e+w9o5EqFBnmhVXIlQVL/I2jCQTHHB72eh2NTQ:e+vEqFBnmhVXIluD
Malware Config
Extracted
quasar
1.4.1
SKIDS
147.185.221.22:6712
545a5892-0ce9-4925-83a7-479d8b964612
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encryption_key
9E968F05BD874BA1BE086FD1774A027473823F49
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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: 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