Behavioral task
behavioral1
Sample
svchost.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
svchost.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
svchost.exe
Resource
win11-20240802-en
General
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Target
svchost.exe
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Size
409KB
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MD5
e91eaf2354905929179fdcbab75c3bf7
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SHA1
0ecd93407f083eb563988e274bf65618510244e8
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SHA256
e84bb77d20f27dfc489e7b51e8a8cc356e8174a780e76b68d42546b7ffbf4d17
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SHA512
9ce9149b3e8ad1aedb55c516a980923a1642d828f9130c7b8c3e68c5e3048c7b1cb991be3f919b2de1a07438c626a6e11a5b9dad7f7c9902b1faa94090813259
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SSDEEP
6144:UM99p1kREG60olNwdk3kdQGJ9EFWcIECbFb9bkUXtlsbz2XdUwp6X:hpiREGJmwdk3Kd9+0bkeo2XdUwA
Malware Config
Extracted
quasar
3.1.5
SeroXen | v3.1.5 |
127.0.0.1:21489
$Sxr-jy6vh8CtEJL5ceZuIb
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encryption_key
eV3j7IEVKHPeHjySbW5R
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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 svchost.exe
Files
-
svchost.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