xworm | 7245244c75276269f56cce5f81194681a881d4746a7abec6807f28a19b04ba66

General

Target

951a32aa2dc318f958f6343a90520b9a.exe
Size

703KB
MD5

951a32aa2dc318f958f6343a90520b9a
SHA1

c54777ef2b539737582b700935beb4d09da9eaf2
SHA256

7245244c75276269f56cce5f81194681a881d4746a7abec6807f28a19b04ba66
SHA512

25fade9e618fc12220863fea258cb9b00ea6e3459c5d66e0951b3ee8d846fb33259160d1b826f58589c003593961652ecaaf252aadbeaf5371f8ee888a211547
SSDEEP

12288:vp4ZLalVqAJVLBNAliYOapsNlW3R5rad8pz4U1tF5qBsy7BnX+uUnsAS:v+Z2/rJjNAliYOBMrE8GUaBsyNXmF

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

87.120.117.209:7000

Mutex

U2y4hALpuDGJOJr0

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023ca6-16.dat	family_xworm
behavioral2/memory/316-19-0x0000000000AB0000-0x0000000000ABE000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	951a32aa2dc318f958f6343a90520b9a.exe

Executes dropped EXE 3 IoCs

pid	Process
1772	fOr6oSoLC6.exe
316	S3VgvrtApm.exe
3940	fOr6oSoLC6.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1772 set thread context of 3940	1772	fOr6oSoLC6.exe	88

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3944	1772	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fOr6oSoLC6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fOr6oSoLC6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	951a32aa2dc318f958f6343a90520b9a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	316	S3VgvrtApm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1772	1968	951a32aa2dc318f958f6343a90520b9a.exe	85
PID 1968 wrote to memory of 1772	1968	951a32aa2dc318f958f6343a90520b9a.exe	85
PID 1968 wrote to memory of 1772	1968	951a32aa2dc318f958f6343a90520b9a.exe	85
PID 1968 wrote to memory of 316	1968	951a32aa2dc318f958f6343a90520b9a.exe	87
PID 1968 wrote to memory of 316	1968	951a32aa2dc318f958f6343a90520b9a.exe	87
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88
PID 1772 wrote to memory of 3940	1772	fOr6oSoLC6.exe	88

C:\Users\Admin\AppData\Local\Temp\951a32aa2dc318f958f6343a90520b9a.exe
"C:\Users\Admin\AppData\Local\Temp\951a32aa2dc318f958f6343a90520b9a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Roaming\fOr6oSoLC6.exe
  "C:\Users\Admin\AppData\Roaming\fOr6oSoLC6.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Users\Admin\AppData\Roaming\fOr6oSoLC6.exe
    "C:\Users\Admin\AppData\Roaming\fOr6oSoLC6.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 264
    3⤵
    - Program crash
    PID:3944
- C:\Users\Admin\AppData\Roaming\S3VgvrtApm.exe
  "C:\Users\Admin\AppData\Roaming\S3VgvrtApm.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1772 -ip 1772
1⤵
PID:184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\S3VgvrtApm.exe

Filesize
32KB

MD5
85d9338ae7f8665821638125a394cb4f

SHA1
269be255f238e7be7e4976204b6605ee069e55d9

SHA256
a1c97fe85170fd6acd766d965f1931e32692ffa92db222492fd24b4421b126c9

SHA512
3b66e2f2893ef61a5acf2e21f2d216bb0da18e54a1f1f06eba8167f71e1ee7c1a1efa208f625f5c82dfd4c391ba3b89b545adffc9baddde84fccf95872fe9d45

Download Submit
C:\Users\Admin\AppData\Roaming\fOr6oSoLC6.exe

Filesize
459KB

MD5
1d97c138b9e3c19f4900a6a348240430

SHA1
84ceb6309b2efc0fdfa1fee6a6420a615d618623

SHA256
77f6caa506303dbdcf644380adf5cb01b122f6f5efa3a54d7492754075243e2b

SHA512
bd8b8ab7717ccc1b9c41ddba7d3b48cd4e565f51b61357b46677905d5faf3eb98ba7bca0b39f0fb05fd97300009568ecc9408fd9113a77d3642e8924e3074f73

Download Submit
memory/316-18-0x00007FFC0CE73000-0x00007FFC0CE75000-memory.dmp

Filesize
8KB

Download
memory/316-19-0x0000000000AB0000-0x0000000000ABE000-memory.dmp

Filesize
56KB

Download
memory/316-28-0x000000001B6D0000-0x000000001B6E0000-memory.dmp

Filesize
64KB

Download
memory/316-29-0x000000001B6D0000-0x000000001B6E0000-memory.dmp

Filesize
64KB

Download
memory/1772-21-0x0000000000CB5000-0x0000000000CB6000-memory.dmp

Filesize
4KB

Download
memory/3940-22-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3940-25-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3940-26-0x0000000000C90000-0x0000000000D07000-memory.dmp

Filesize
476KB

Download
memory/3940-27-0x0000000000C90000-0x0000000000D07000-memory.dmp

Filesize
476KB

Download

Analysis

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