General
- Target XClient.exe
- Size 30KB
- Sample260517-1mappads8s
- SHA256 1a5c3e7ee2b9577f64e6f8230872945814dc4eba01b11d175909c37fabe931ca
- MD5 f28bb69b24449ef3c7c56417397fbcdf
- SHA1 2e4ad7b6ba6dcaa3b4e8f50e8dc2c7347b767bf3
- SHA512 03d69b13c7dd8abbc404298cc31f9bd3f23d890394488468f33c102159182efa3ecf0edfcc02bde5cd6250814d8b3e2fb64c443a726071a1a16f0a47612338ec
- SSDEEP 384:B7wTA+5OfhxeelKn4MPLZhspJCXlYECwaipXQs5RugtFuBLTIOZw/WVwvn9IkVuK:BFx7s4EQw1YETDpAs5BFR9R2LOqhGbz
- TLSH T1E4D24B087BE58327D9EF1FF22DB291020275D917D923DF5E4CD896AB6B67A8043013E6
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win10v2004-20260513-en
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win10ltsc2021-20260513-en
17 signatures
150 seconds
Malware Config
Extracted
Family
-
xworm
Version
-
3.0
C2
-
27.tcp.cpolar.top:13256
Mutex
-
L0NNBCvjhBFEkp3W
Attributes
-
install_file
USB.exe
aes.plain
Targets
-
- Target XClient.exe
- Size 30KB
- SHA256 1a5c3e7ee2b9577f64e6f8230872945814dc4eba01b11d175909c37fabe931ca
- MD5 f28bb69b24449ef3c7c56417397fbcdf
- SHA1 2e4ad7b6ba6dcaa3b4e8f50e8dc2c7347b767bf3
- SHA512 03d69b13c7dd8abbc404298cc31f9bd3f23d890394488468f33c102159182efa3ecf0edfcc02bde5cd6250814d8b3e2fb64c443a726071a1a16f0a47612338ec
- SSDEEP 384:B7wTA+5OfhxeelKn4MPLZhspJCXlYECwaipXQs5RugtFuBLTIOZw/WVwvn9IkVuK:BFx7s4EQw1YETDpAs5BFR9R2LOqhGbz
- TLSH T1E4D24B087BE58327D9EF1FF22DB291020275D917D923DF5E4CD896AB6B67A8043013E6
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detect Xworm Payload
-
Looks for VirtualBox Guest Additions in registry
-
Looks for VMWare Tools registry key
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Loads dropped DLL
-
Modifies system executable filetype association
-
Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
MITRE ATT&CK Enterprise v16
Persistence
Event Triggered Execution
1Change Default File Association
1Pre-OS Boot
1Bootkit
1Defense Evasion
Modify Registry
1Pre-OS Boot
1Bootkit
1Virtualization/Sandbox Evasion
2