Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240221-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
96af5dc54d88c52bb8c29c8ebb5ec05a
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SHA1
19b91ec7e1a84456a10d0aeade9d490d0aa3a0ca
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SHA256
5bf68349ae38ee10a70e245878fa9be0b0f0cec13cc568b717405f8a2998b318
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SHA512
684385d81f843ad9a48de663f73c5aa40c2a287c6b854b2e18759ea30b5b6e948a2a10c7d2b7e47dbfa7ed244319abdf8bc5b38e2a0e1d426445defaac862f92
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SSDEEP
49152:TvHlL26AaNeWgPhlmVqvMQ7XSKCY+tKBxfgoGdMGTHHB72eh2NT:TvFL26AaNeWgPhlmVqkQ7XSKotRc
Malware Config
Extracted
quasar
1.4.1
SeroXen
series-pencil.gl.at.ply.gg:59416
57b0c1a3-3b60-4613-982a-8d1c15d73df4
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encryption_key
0B97BF1DFEE8FA6388EF6A29250794D08227D7A2
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install_name
$77-Build.exe
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log_directory
$77-Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
$77-Aetherium
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