xworm | 405bdae4a67cc4a4e5a9d2f39acd2ea34f5054f4caa8b085f03bb1286dfb5105

General

Target

XClient.exe
Size

61KB
MD5

60797170ebbe376274cf30e64b127706
SHA1

648e9c31b92f4d3fb93e7ca8be73836883c41538
SHA256

405bdae4a67cc4a4e5a9d2f39acd2ea34f5054f4caa8b085f03bb1286dfb5105
SHA512

754d72a6b2a5428e64f0d8d58be0bd89a5f6a7c9ec646d08bccc981adf06567ab5191ba0a7768efe8ee8781bcd216e404a0ebaf55992a151e5536e26f8a93559
SSDEEP

1536:WzPVaddkiWRZrtTAdBxmiABbARE4TKQDmjav6/LnkO8AqYZP:Wz4CLTA9mi+bARsbLnkO8AxZP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:32901

engineering-thoroughly.gl.at.ply.gg:32901

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2864-1-0x0000000000B00000-0x0000000000B16000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2920	powershell.exe
2740	powershell.exe
1744	powershell.exe
2464	powershell.exe

Drops startup file 2 IoCs

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2740	powershell.exe
1744	powershell.exe
2464	powershell.exe
2920	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	XClient.exe
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeDebugPrivilege	2464	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2864	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 2740	2864	XClient.exe	29
PID 2864 wrote to memory of 2740	2864	XClient.exe	29
PID 2864 wrote to memory of 2740	2864	XClient.exe	29
PID 2864 wrote to memory of 1744	2864	XClient.exe	31
PID 2864 wrote to memory of 1744	2864	XClient.exe	31
PID 2864 wrote to memory of 1744	2864	XClient.exe	31
PID 2864 wrote to memory of 2464	2864	XClient.exe	33
PID 2864 wrote to memory of 2464	2864	XClient.exe	33
PID 2864 wrote to memory of 2464	2864	XClient.exe	33
PID 2864 wrote to memory of 2920	2864	XClient.exe	35
PID 2864 wrote to memory of 2920	2864	XClient.exe	35
PID 2864 wrote to memory of 2920	2864	XClient.exe	35

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1744
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2464
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
70639262cdba0d9f229392471041ef5e

SHA1
c49869297297ab4e40f66c105c1545dc5ff1958a

SHA256
9542ec0eb95737c5a6d0934cdffe8df4b49ae3d9d1429e31ba92b1498e1091e8

SHA512
c60893bd6185669fec17683b9d71a74343674563c2f9abf6ae071128863d2c240d59197c503efb7f903dce90c2062163f8d73b362883f2c043b157e745322e09

Download Submit
memory/1744-15-0x000000001B860000-0x000000001BB42000-memory.dmp

Filesize
2.9MB

Download
memory/1744-16-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2740-7-0x0000000002E40000-0x0000000002EC0000-memory.dmp

Filesize
512KB

Download
memory/2740-8-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/2740-9-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/2864-0-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

Filesize
4KB

Download
memory/2864-1-0x0000000000B00000-0x0000000000B16000-memory.dmp

Filesize
88KB

Download
memory/2864-2-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/2864-32-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

Filesize
4KB

Download
memory/2864-33-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download

Analysis

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