General
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Target
Client-built.exe
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Size
3.1MB
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MD5
68d503099628afd78d44302235f779ab
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SHA1
aa2f6d04e33aa37a4c78ed0c57f68172330e7b91
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SHA256
d64384eda71e8e67d20ac8f228b5bcf6e657d58ee0d0c89ee1594a48ee0bb478
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SHA512
1115d38346e25f1644a6277d2014f3b47a0658523a131ba7d37037b5dbe63e0975350c319fddc2402c278fcb306cef94b177d482171f9920afd69cc6b197e3d7
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SSDEEP
49152:KvOI22SsaNYfdPBldt698dBcjHslI8jhpLoGdCTHHB72eh2NT:Kvj22SsaNYfdPBldt6+dBcjHslII
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.100.78:4782
e6857516-29c9-4956-99ed-473a1d549175
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encryption_key
D799753C7C07E74DE68398F5B1F1AD3AEE613FDC
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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: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