General
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Target
Client-built.exe
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Size
3.1MB
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MD5
52b0d7d23b512fe42218aa584b3cc1e5
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SHA1
1ee9eff42862e70627455c6ea4e2fcd209685a89
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SHA256
37ba938a5377880a59b6237284a4a2b6f39efe4365ae50f9d11ef41d2b71617c
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SHA512
2634503c56e2318dfb1d24b46398269e52d81f552b02ebf5510b0787de6a5dd8c9876815e4e456e2a330f7c9e25e8adc2ed4f4edd8c12b10190705d502b6073c
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SSDEEP
49152:qvqY52fyaSZOrPWluWBuGG5g5h5gRJ6MbR3LoGdphTHHB72eh2NT:qvf52fyaSZOrPWluWBDG5g5h5gRJ6WZ
Malware Config
Extracted
quasar
1.4.1
Office04
abc:4782
3e951de6-7d65-4c74-be36-4f85335015b2
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encryption_key
EE93F685F5901D586C199DCE50E8C2C86F2CD754
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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
cool nammes
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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