xworm | 842915fdc082ac2d547320c7911bfa28ba7fcdf41a7491575fd744bd879bdbf5

General

Target

ad9745a30f0b4b8c8f09067b88273340N.exe
Size

40KB
MD5

ad9745a30f0b4b8c8f09067b88273340
SHA1

c59b71dbbc1f735a2790ed9cecee9cf51856d7ef
SHA256

842915fdc082ac2d547320c7911bfa28ba7fcdf41a7491575fd744bd879bdbf5
SHA512

4ac714e805402362f819b0693c8d2538ecddf2d63e8e212dbd83dc82f5c77d0469e26464c28c0611b185aa2d521ef507261ed38c88ba9a6b489d331c9d42035b
SSDEEP

768:SAy7yuCLGJaZr/8rMhSSYlwXDUDX+Wcv6zFPc9Y7Ophhg4bZB:SR7yutJaZXNe5SeFk9Y7Opc4bZB

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

wrong-km.gl.at.ply.gg:47024

Mutex

4pVBiqAFSAkWCIba

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4520-0-0x0000000000F40000-0x0000000000F50000-memory.dmp	family_xworm
behavioral2/files/0x000600000001da42-8.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	ad9745a30f0b4b8c8f09067b88273340N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	ad9745a30f0b4b8c8f09067b88273340N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	ad9745a30f0b4b8c8f09067b88273340N.exe

Executes dropped EXE 2 IoCs

pid	Process
924	XClient.exe
720	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	ad9745a30f0b4b8c8f09067b88273340N.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2984	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	ad9745a30f0b4b8c8f09067b88273340N.exe
Token: SeDebugPrivilege	4520	ad9745a30f0b4b8c8f09067b88273340N.exe
Token: SeDebugPrivilege	924	XClient.exe
Token: SeDebugPrivilege	720	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 2984	4520	ad9745a30f0b4b8c8f09067b88273340N.exe	86
PID 4520 wrote to memory of 2984	4520	ad9745a30f0b4b8c8f09067b88273340N.exe	86

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\ad9745a30f0b4b8c8f09067b88273340N.exe
"C:\Users\Admin\AppData\Local\Temp\ad9745a30f0b4b8c8f09067b88273340N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2984

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:924

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
40KB

MD5
ad9745a30f0b4b8c8f09067b88273340

SHA1
c59b71dbbc1f735a2790ed9cecee9cf51856d7ef

SHA256
842915fdc082ac2d547320c7911bfa28ba7fcdf41a7491575fd744bd879bdbf5

SHA512
4ac714e805402362f819b0693c8d2538ecddf2d63e8e212dbd83dc82f5c77d0469e26464c28c0611b185aa2d521ef507261ed38c88ba9a6b489d331c9d42035b

Download Submit
memory/924-10-0x00007FF945250000-0x00007FF945D11000-memory.dmp

Filesize
10.8MB

Download
memory/924-12-0x00007FF945250000-0x00007FF945D11000-memory.dmp

Filesize
10.8MB

Download
memory/4520-0-0x0000000000F40000-0x0000000000F50000-memory.dmp

Filesize
64KB

Download
memory/4520-1-0x00007FF945253000-0x00007FF945255000-memory.dmp

Filesize
8KB

Download
memory/4520-6-0x00007FF945250000-0x00007FF945D11000-memory.dmp

Filesize
10.8MB

Download
memory/4520-7-0x00007FF945250000-0x00007FF945D11000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads