General
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Target
Client-built.exe
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Size
622KB
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MD5
5a04c101f3d7d97972c021345188c2db
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SHA1
a52b6dff61c288d31985c0937d1d551a37058ada
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SHA256
d41be67bd6ac26f456b46f051e7113c75926b17befe5c56bb63a0fb21fb522bf
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SHA512
88450884745ab2cf0a93175dc78771733e2867e5ceaa3e47e6e4d7108c37dd23e288fc662adc687125f895eea8524e950e381b29b711405a13f33cb49874ed0d
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SSDEEP
6144:7tLh4Qyecl8s8GjimGnb8i8SSbIWhes8APgKcrmEkkjv:r7UiW7Iye14c9kkjv
Malware Config
Extracted
quasar
1.3.0.0
Office04
94.62.38.122:3456
QSR_MUTEX_wiU7THLM0nBxBNnpFS
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encryption_key
pJvDrAqbYrqzCuYFnOCz
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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 x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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: 619KB - Virtual size: 619KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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