General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e5ce65d08f3bbc9dce32c4910ed72052
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SHA1
c0cd967a596c4ca96b6b1f8f5b4f6d23139719b4
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SHA256
6a9e87e1040d950e79970e763e1cebb8fea6807542a6dc0368b67d30256ed908
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SHA512
b530303a0298fc7b84ea7903e4e423bc99259ce7db6bb496776493c1fecdbf7ed39e3db6d4539eac75a2b92dd477d8c78f7cea9a7c771ed1ba74636dd465034a
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SSDEEP
49152:SvbI22SsaNYfdPBldt698dBcjHRacYZhYvJhqoGdMTHHB72eh2NT:Svk22SsaNYfdPBldt6+dBcjHIht
Malware Config
Extracted
quasar
1.4.1
Office04
37.1.203.23:8181
176f6511-62f7-46a3-b1f5-60de06b7f901
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encryption_key
115FDEF4E0E65CC0BD47F096B48EADFDDE8752D2
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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