Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20240508-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
40e23e474ee8d2726fe03b40081a25d6
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SHA1
81c729c9dcaa6357d4c3d5e7f5c10f5b1f2a5844
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SHA256
4da81d41e48ee5ddf37d4c5dd49826ccf9a9f4ee9b2b89f64323de3a45cd1f84
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SHA512
bc536ccedb560c762df85b316650db397d4bb03f4c7e6d30530d9a685d34e936c26ae3981e9ea87dead6e735b992588c9fb374ea644c11baa0db1c12ef165251
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SSDEEP
49152:3vTlL26AaNeWgPhlmVqvMQ7XSKhuRJ6+bR3LoGdi8THHB72eh2NT:3vJL26AaNeWgPhlmVqkQ7XSKhuRJ64S
Malware Config
Extracted
quasar
1.4.1
Wave Generator
192.168.1.150:4782
4fa54cdc-4bee-4759-b0fd-21bb6d6f9eed
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encryption_key
99A3D9CE1DE6501187FC4C0E50EBB3FE8AD7B9A8
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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
Microsoft Task Manager Worker Service
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subdirectory
SubDir
Signatures
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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 Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
Password: 123
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