Behavioral task
behavioral1
Sample
real.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
real.exe
Resource
win10v2004-20240226-en
General
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Target
real.exe
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Size
409KB
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MD5
16be7896ffd96f3c15ca40ff3243674f
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SHA1
321e82e120535d5f48430284804d5aca5f78d8c7
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SHA256
e297f022413aee60290878fd253b68ecb9af7e7919ddae6093a977c10b47ca07
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SHA512
6dda93f0e4e47caf40bf15372fd8edee36b8a66d4d6ee3a6e1400c9297cbaa32584c6f8c97e2e76c4e3cd8b195d8e9cbb898870559e7a7177db97eb8c0a521ad
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SSDEEP
12288:8Bwz9Fx/nIlyLcnRKIZduz8IWQygCLZG9:8+J0sLYpuz8bQygB
Malware Config
Extracted
quasar
3.1.5
RSlaves
147.185.221.19:33587
$Sxr-hphEGEvqSUG7C0u46T
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encryption_key
6jSzwDnfbfYdZp3ml07G
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install_name
WDefenderUpdater.exe
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log_directory
UpdLog
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reconnect_delay
3000
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startup_key
WindowsBIOSupd
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subdirectory
Microsoft
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 real.exe
Files
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real.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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: 405KB - Virtual size: 405KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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