Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240220-en
General
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Target
Client-built.exe
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Size
3.4MB
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MD5
5563db885f9dff8a21515399173729af
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SHA1
699f3b02b8708ff390bea58f92380610aef1a016
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SHA256
a7213d2f57e96c1cc5e026f53eae26941ef1d64bdb3a588a96b81a3cbef92548
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SHA512
bae11f061c5bee115792c8e429b594b8d3980208c67a2f88ea76ccbf298e26978c57f1b32b564e2585c60e9c711d043c20e11f461b887fb1c30eb2731ed9aaac
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SSDEEP
98304:CvY62XlaSFNWPjljiFXRoUYIjhRJ6Dux:kQZYsC
Malware Config
Extracted
quasar
1.4.1
Office04
gaykami.zapto.org:4782
fd070244-4e4f-464f-bf66-b0519c62cf67
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encryption_key
D408429A8F1C644E0A5D5AD709BD41BEADE3C3F6
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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
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: 267KB - Virtual size: 266KB
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