Behavioral task
behavioral1
Sample
Powershell.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Powershell.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
Powershell.exe
Resource
win11-20240508-en
General
-
Target
Powershell.exe
-
Size
409KB
-
MD5
4286aedc2a233ab74deb2670fa484866
-
SHA1
860fdc6876a4948f5e352aa50910b9f13607c3fb
-
SHA256
149ef8e77fbe162157f8462892235211b9f926a3454d615ad4c59e854e48ec82
-
SHA512
fc3c7885a9f6af0a2d38375f1d256128a474a998c2359938955fff6e45d216dfa1942ccba2359b18f263219d95004b9e976524ef26c967c58cb29a7c6c93f097
-
SSDEEP
12288:UpsD64e1MDEArEiVTqkllSmxmeN1AKXiLNk2+XRnS:ksG4kMsaGkllvxvuKyZ1N
Malware Config
Extracted
quasar
3.1.5
SeroXen | v3.1.5 |
runderscore00-25501.portmap.host:25501
$Sxr-jy6vh8CtEJL5ceZuIb
-
encryption_key
JCa22tR8WnO00adn2TuE
-
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 Powershell.exe
Files
-
Powershell.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