General
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Target
Client-built.exe
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Size
3.1MB
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MD5
6706a6e4a95f5637609c6b2caf787c4d
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SHA1
fa341df8b489ebd921cb18333c07aef7da0f2bc0
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SHA256
f8242a7acd92d0e086f25d91e9f14a0c7ad4ef941552e832c864d9474b115365
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SHA512
710bbb34714dba6b268f23537c0a1b85544f7fdc39b051c13df5a3dfb0465edbcf5ae64fb885fbd66fef64ae5e085784c09ebafba93ebb6d0bcf1315bddd001c
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SSDEEP
49152:CvuI22SsaNYfdPBldt698dBcjHOjkaC4OcoGdLNuqTHHB72eh2NT:CvD22SsaNYfdPBldt6+dBcjHOjkQ
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.213.165:4782
d402a788-8e2a-4a4a-aeb4-513d9ccafb05
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encryption_key
F32126D84D72B52DFD050B3033DA28DFA736DED8
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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