Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240221-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
32bb0a34ec761b84719ba4e23bb812e7
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SHA1
a9bb8d3418ac232997b54961d640922606ffe734
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SHA256
540a815a873aae037d0cb5bc5a9b8288acd6d83024860d79923f695dd379f22f
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SHA512
9264a68fb34069b759298baf1d0ec708133bf9b00caf3aec99e2e7a787c099948aa9c2469bc01c12d24d3323f5fcbc26ab8abc34ff4ad0bb90e500db67adba87
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SSDEEP
49152:KvEt62XlaSFNWPjljiFa2RoUYIzFitmtMfDBoGdmWTHHB72eh2NT:KvY62XlaSFNWPjljiFXRoUYIzFitm+
Malware Config
Extracted
quasar
1.4.1
Office04
127.0.0.1:29643
9bda9817-7d07-49e7-92d5-dcaf6b89216c
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encryption_key
31B6B433E91FDBAAD05B632B163CCF988D67E433
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install_name
system.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
svc
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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