General
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Target
Client-built.exe
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Size
3.1MB
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MD5
acae78b76f4b990b86e2d2d5edfbb6fe
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SHA1
0407bc802c64787ffd2baf35f6ef6c186e88d1dc
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SHA256
afaf1fafdbbd222021f2d6dc870e4026866a2be055654207be312d6d9cbf3bf4
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SHA512
8ff3124fa36c76ee7da622cf6faa6e992369dd6211e9808896afb32b677dadbbf65ed36748c8b7edfd0d01a706b3e38e293053f10e2d983017061f82fc426ee3
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SSDEEP
49152:SvnI22SsaNYfdPBldt698dBcjHBuRJ6dbR3LoGdKITHHB72eh2NT:SvI22SsaNYfdPBldt6+dBcjHBuRJ6v6
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.150:4782
adc301f6-35ca-4636-b286-ad2aef63f877
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encryption_key
54B7AB1A151267275EF24D335CE7E3B6ABDDC53E
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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
Microsoft Launcher Task Manager
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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
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