Behavioral task
behavioral1
Sample
svchost1.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
svchost1.exe
Resource
win10v2004-20240508-en
General
-
Target
svchost1.exe
-
Size
409KB
-
MD5
b80b8c569a390b124cb7aaae003c8a82
-
SHA1
c38fc46e835ccbb538f4df122e501d07562553c4
-
SHA256
49686a0b50103315e6a2a8af78084b9b5eb485ad4767f2d63043d8969ff9bb23
-
SHA512
75148f5e619eea0b6f44b3e6ecc0d4e6a97775fee2456209d90c002f8baacfa9109b2be90da6afdf0282c7704a9542bb01c6566d383d4a0b587508e4f6fdfb47
-
SSDEEP
12288:epsD64e1M8c4Q7JkMgtqB+chi4gjEhNjh:6sG4kMfJiqBNfPh
Malware Config
Extracted
quasar
3.1.5
SeroXen | v3.1.5 |
nexosmith1231-54169.portmap.host:4782
$Sxr-NbHXQzYHWTCnT97XUN
-
encryption_key
v2wYEk6QCkLkJJ1DyEGm
-
install_name
$sxr-powershell.exe
-
log_directory
$sxr-Logs
-
reconnect_delay
3000
-
startup_key
Powershell
-
subdirectory
$sxr-seroxen2
Signatures
-
Quasar family
-
Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource svchost1.exe
Files
-
svchost1.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