Behavioral task
behavioral1
Sample
Cleaner.exe
Resource
win7-20240903-en
General
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Target
Cleaner.exe
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Size
3.1MB
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MD5
f1f656fdd0c4224b3900a4c2d50443e6
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SHA1
9b2879d91a63e6437ec7b47a5c39dd5cc64c9df3
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SHA256
e278b36305e60e18a29c4b388248a78bd9c58fabc17fa9943392c43e7a49588e
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SHA512
2b8ea438b308c94d463f06c8a04da1fa292f448b6f024e59423a1df5f5693b4957d12ffef6d03679f2d4a0c93d93ba16d8acf5c74f694f3a1a5b91aae1d378cf
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SSDEEP
49152:GvyI22SsaNYfdPBldt698dBcjHlCy1JzLoGdZTHHB72eh2NT:Gvf22SsaNYfdPBldt6+dBcjHlCm
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.145:4782
9d952f82-b8b7-4948-b2b7-53c225a63ebb
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encryption_key
AAB9DCB0841C8C889A6BCA76764D0770416B2FE1
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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 Cleaner.exe
Files
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Cleaner.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