Behavioral task
behavioral1
Sample
srxchost.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
srxchost.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
srxchost.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral4
Sample
srxchost.exe
Resource
win11-20240508-en
General
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Target
srxchost.exe
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Size
409KB
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MD5
3646d83b4b68c7a7de0c4cb99c6550c9
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SHA1
1f84405a3a18a24d58eb62a13dd1cfe5c4b6d3d1
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SHA256
12dc2f09f5cb5160771e12b5128de26fde6bab70cee6d063859eea955df1216c
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SHA512
707b7b35f9504fa4b18ca1175e010771e67c3096b2d7552dc03c0bfb1bb377bfe360e2b49ce3ebc1408b6fac9838e5b8af26721650e8b5823969a12501fb0107
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SSDEEP
12288:9piREGJiVp4B6eODSwejGz1VIudSJRZfwmJweOJsn:TwpJj8Nd+RZImJf
Malware Config
Extracted
quasar
3.1.5
SeroXen | v3.1.5 |
dating-mpegs.gl.at.ply.gg:6566
$Sxr-jy6vh8CtEJL5ceZuIb
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encryption_key
RtxBjTfEK9dH2O6DfNVH
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install_name
$sxr-powershell.exe
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log_directory
$sxr-Logs
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reconnect_delay
3000
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startup_key
Powershell
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subdirectory
$sxr-seroxen2
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 srxchost.exe
Files
-
srxchost.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