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 4 IoCs

resource	yara_rule
behavioral1/memory/1264-1-0x0000000000960000-0x0000000000970000-memory.dmp	family_xworm
behavioral1/files/0x000800000001933b-10.dat	family_xworm
behavioral1/memory/2820-12-0x0000000001370000-0x0000000001380000-memory.dmp	family_xworm
behavioral1/memory/2920-15-0x0000000000280000-0x0000000000290000-memory.dmp	family_xworm

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

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
2820	XClient.exe
2920	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-1-5-21-2703099537-420551529-3771253338-1000\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
1724	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1264	ad9745a30f0b4b8c8f09067b88273340N.exe
Token: SeDebugPrivilege	1264	ad9745a30f0b4b8c8f09067b88273340N.exe
Token: SeDebugPrivilege	2820	XClient.exe
Token: SeDebugPrivilege	2920	XClient.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 1724	1264	ad9745a30f0b4b8c8f09067b88273340N.exe	31
PID 1264 wrote to memory of 1724	1264	ad9745a30f0b4b8c8f09067b88273340N.exe	31
PID 1264 wrote to memory of 1724	1264	ad9745a30f0b4b8c8f09067b88273340N.exe	31
PID 1904 wrote to memory of 2820	1904	taskeng.exe	34
PID 1904 wrote to memory of 2820	1904	taskeng.exe	34
PID 1904 wrote to memory of 2820	1904	taskeng.exe	34
PID 1904 wrote to memory of 2920	1904	taskeng.exe	35
PID 1904 wrote to memory of 2920	1904	taskeng.exe	35
PID 1904 wrote to memory of 2920	1904	taskeng.exe	35

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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264
- 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:1724

C:\Windows\system32\taskeng.exe
taskeng.exe {59853046-D464-4534-B872-864C3129B557} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2920

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
40KB

MD5
ad9745a30f0b4b8c8f09067b88273340

SHA1
c59b71dbbc1f735a2790ed9cecee9cf51856d7ef

SHA256
842915fdc082ac2d547320c7911bfa28ba7fcdf41a7491575fd744bd879bdbf5

SHA512
4ac714e805402362f819b0693c8d2538ecddf2d63e8e212dbd83dc82f5c77d0469e26464c28c0611b185aa2d521ef507261ed38c88ba9a6b489d331c9d42035b

Download Submit
memory/1264-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/1264-1-0x0000000000960000-0x0000000000970000-memory.dmp

Filesize
64KB

Download
memory/1264-6-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/1264-7-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/1264-8-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2820-12-0x0000000001370000-0x0000000001380000-memory.dmp

Filesize
64KB

Download
memory/2920-15-0x0000000000280000-0x0000000000290000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads