Behavioral task
behavioral1
Sample
Client-built-non-install-and-startup.exe
Resource
win10-20230703-en
General
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Target
疑似远控.zip
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Size
2.2MB
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MD5
ae271f9917fcb2d7ffad3015dee5e66a
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SHA1
18ed58db4e2b4796d77e8a22efd88266aa4bb3e7
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SHA256
528011427ec6ae5a3f73e18b2ee736578248d25499bc637bf1b3cc418d39cece
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SHA512
5ef4379d9557898f7cd2691793d9447a8be5f3ac0f552e9783bf7b7ad1b66a1c5275a6a0483f28ea8ddbb0d3adda1f4aa25dc5c82ed2cc5b2fd2fb76383234f3
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SSDEEP
49152:nYhxpDJ5jlEzjv4mpqiLZoufKYVdxD57YYzmlW:axlPlEPv4/jMVdxDl5z3
Malware Config
Extracted
quasar
1.4.1
VM
211.101.233.234:1026
21ea9163-c47a-4731-8dcb-d1492d3afcd3
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encryption_key
84C3980D30E4E4331824F949317A7CE7D06D00FF
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install_name
vmware-daemon.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
VMware Daemon
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subdirectory
VMware
Signatures
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Quasar family
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Quasar payload 2 IoCs
resource yara_rule static1/unpack001/Client-built-non-install-and-startup.exe family_quasar static1/unpack001/Client-built-system.exe family_quasar -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/Client-built-non-install-and-startup.exe unpack001/Client-built-system.exe
Files
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疑似远控.zip.zip
Password: infected
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Client-built-non-install-and-startup.exe.exe windows x86
Password: infected
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
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Client-built-system.exe.exe windows x86
Password: infected
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