General
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Target
Client-built.exe
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Size
3.1MB
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MD5
802b87d9573ed818a874c623450d9eb3
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SHA1
ffdedc0ed0a944ed2fca22618d9c6f5121be23e1
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SHA256
e22a3cb397fd7057647abdbbfe0aafbfd9a89347d87de1d8d25a7559c93bf78d
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SHA512
409e59688e6feb164359e6da07ef1f7a3fb0e0b272b4443b93bd72a0aca8360903013aa2ec7d54311289bb5cab1a76e0a524eb49d47baca2bfe32eee5a19af1a
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SSDEEP
49152:nvZG42pda6D+/PjlLOlg6yQipVl4gZfD+N6YoGdsTHHB72eh2NT:nvI42pda6D+/PjlLOlZyQipVlxZa
Malware Config
Extracted
quasar
1.4.1
Office04
26.129.198.185:4782
26.129.198.185:4783
192.168.100.213:4783
1a2ca71f-65ef-446f-bdd5-6f5d396ece2f
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encryption_key
647827306D789C3A0BDAE423EB04375B6E1FDA36
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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