General
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Target
Client-built.exe
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Size
3.1MB
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MD5
097eec89ec840e8f2e890a9cb41b2983
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SHA1
c46aa81075914a866780001279675aaf5395c03f
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SHA256
0736d6fa83f88e7a56df19cbefd55f4f2682226e1c1cb3c3e0f6c5bd83540090
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SHA512
651738f346c59a62ccbcbcf1563f4f96ee5f5e8972f5b682456d41ca8c6e836a9b787a5b469f7f34c0c1e0c2b0fd07ec8854a87916d3a66c1d722200738a5784
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SSDEEP
49152:HvyI22SsaNYfdPBldt698dBcjHEaQCqtartsoGdhxTHHB72eh2NT:Hvf22SsaNYfdPBldt6+dBcjHd5q3
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.1:4782
2c766987-d059-4668-905b-908787584195
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encryption_key
5B2F491201B58C5D6C2FB166A5DF25805A921994
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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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
Password: 484787487667674838732634
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