Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
adc809b75572fa46fda9f842728dd9fb
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SHA1
8bfb4918f551b2f04551504b6047539d673e30f6
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SHA256
4b1dfcbfe76d3b2778598bf41e3873665d0bdfae115735ca1332bed8aa50e2df
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SHA512
2041fa4fbd8948f05658a205d4a2a702cf6865f6982e08f37c0fd2f4d207c69199699678cf4fce18dc6fa25f41269720a00f8fbd5e0d00456b849d644246a465
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SSDEEP
49152:avAt62XlaSFNWPjljiFa2RoUYIEgRJ63bR3LoGd+THHB72eh2NT:avs62XlaSFNWPjljiFXRoUYIEgRJ6J
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.31.68:4782
05ee7805-26a7-4761-b21c-d55dcaa31857
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encryption_key
B444CC22137E58A588D9597C46888B34DA3BD016
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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
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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