General
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Target
Client-built.exe
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Size
3.1MB
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MD5
4dceb0c052b78f1ae6936f6c53404c17
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SHA1
4dd042cb33a5d09eb3505baed44ed2abfd96a45c
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SHA256
1470d951fe09cd8c2b62fcdf640082738892acbea7868cc8ea0b8c2d2ada3905
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SHA512
7923439dff446c40eb50de6514df8bf2e012f29b8d1fc30f4a45d1c8cd921f5a2737fc5eef802ebe6bfc97af7bfe60e9f17cc8fbe13020ceabc0be37c68a8bb4
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SSDEEP
49152:fvOI22SsaNYfdPBldt698dBcjHrxQEC34k/JxloGdU0THHB72eh2NT:fvj22SsaNYfdPBldt6+dBcjHrxyr
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.178.100:4782
0c16ac3a-65ad-4a46-aa3d-7e603e8df11d
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encryption_key
8DF659EF1733572C92CB099CAABF5BB85EC5170A
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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