General
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Target
Client-built.exe
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Size
3.1MB
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MD5
bb1c4dce21f5c456bd7a5e9fd4d97588
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SHA1
591fae4f6bdebcaf83ccc1bea37113956b373ad1
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SHA256
781d04dfdbfc7d4ac681f23fc8501b29390c42874e59a647273790e3cc073ce0
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SHA512
a01d016fb7afdae41787ff8d8d5de355f040fbbd6789ad845d089116c6e0092aeab95cf91ee7e4dbda4dada1c082e9003d61acbfafe4dfa203fa5b999d161b6c
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SSDEEP
49152:ivkt62XlaSFNWPjljiFa2RoUYI5FRJ69bR3LoGdKbTHHB72eh2NT:iv462XlaSFNWPjljiFXRoUYI5FRJ6Pa
Malware Config
Extracted
quasar
1.4.1
Office04
98.218.3.74:4782
50e9068f-e8d9-4363-bf89-859954325430
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encryption_key
3F9AC61EC3C7AFC94074BECB23299DD92BEDC742
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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
Bob
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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