Behavioral task
behavioral1
Sample
0x00080000000174cc-36.exe
Resource
win7-20240903-en
General
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Target
0x00080000000174cc-36.dat
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Size
534KB
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MD5
81b2c5c64951b603480d40d321540ff2
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SHA1
314199ad92baeb203f5555ff3814e9b7a4f226f8
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SHA256
b893220d33f9b8a0f98702bb577e4459792253ae651bdc18a93145ccd008af54
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SHA512
3a57655bf7aa18a34364659553aad26a3d5b8946b957441f5fedebab5936b6bb2c71c6337837ead486a001b6a9227437cc5c4ec4a5de627f0e2db10dc6afdea6
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SSDEEP
6144:78fG1BIgrx8kFYLTiMkbQEju0KoivMbi7DSVmh6Khe535h+GofOlblwXH/Gy3V8O:HPx7FYPiMQRcRDF4uy33ofAblwX2S
Malware Config
Extracted
quasar
2.1.0.0
Office04
146.190.29.250:7812
VNM_MUTEX_h1gQxrpyccCFZq7JPS
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encryption_key
V5fWyT4tQqXFouaUUxe2
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install_name
Windows Security.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows Update
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subdirectory
SubDir34
Signatures
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Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule sample disable_win_def -
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 0x00080000000174cc-36.dat
Files
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0x00080000000174cc-36.dat.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: 531KB - Virtual size: 531KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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