Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241010-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
18833ce91b26be79378f897dca190f66
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SHA1
c7fdea28474a3e12ebe51aa878abeed9969d8d01
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SHA256
77c61d4dd21b5b2319e14d750799a1be96254cb0fd4c7edd3e81bc825c91594c
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SHA512
565b069175f60cce8d67eddfe41bc8ab5caadbe2ed41acd7a3108b96c3cf7fbdbc8593af7bbe1ad6ac33dd0444866073eff65ff001458b7e94c8ded9f41561c6
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SSDEEP
49152:SvaY52fyaSZOrPWluWBuGG5g5hnDmVmzmioGdKeTHHB72eh2NT:Svv52fyaSZOrPWluWBDG5g5hnDmC
Malware Config
Extracted
quasar
1.4.1
Offset
127.0.0.1:8080
6210ab1d-dd45-4f17-a324-f24c1474c4d8
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encryption_key
CABE6FE0988CAB22AE614AA6065A89402DF1C513
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install_name
svchost.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
conhost
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subdirectory
Windows
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