xworm | 14d861ab3f84d09ad5b4fe1936b1a363ac513416bbf5f561cc274b7238bf063b

Analysis

max time kernel
125s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 12:00

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General

Target

uhhhhh.exe
Size

67KB
MD5

3083acc11f7831e5dd4d17f57629e0e8
SHA1

5f8a1bc143cb1358033050ec3bae36ae7b8ca051
SHA256

14d861ab3f84d09ad5b4fe1936b1a363ac513416bbf5f561cc274b7238bf063b
SHA512

6042d29e295d0fe52d3213a0f8efb11163ab03afe4e272cb437e6f543a2e7e58679d6950ef8a79fd4b1d1b94ff3d73467b4ba623560d5af27e7d69d41994176b
SSDEEP

1536:P3YtrX8iPmi24ysDbA+JcgKID1REW6cOl9jyS:P3GPmpRsDbFc0D7ROPmS

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

country-dealer.gl.at.ply.gg:19923

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2516-1-0x0000000000DD0000-0x0000000000DE8000-memory.dmp	family_xworm
behavioral1/files/0x000a000000016d46-37.dat	family_xworm
behavioral1/memory/2056-39-0x0000000001330000-0x0000000001348000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
2272	powershell.exe
3068	powershell.exe
2868	powershell.exe
2660	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	uhhhhh.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	uhhhhh.exe

Executes dropped EXE 2 IoCs

pid	Process
2056	XClient.exe
2432	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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	uhhhhh.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

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
112	schtasks.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
2272	powershell.exe
3068	powershell.exe
2868	powershell.exe
2660	powershell.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe
2516	uhhhhh.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	uhhhhh.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	3068	powershell.exe
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2516	uhhhhh.exe
Token: SeDebugPrivilege	2056	XClient.exe
Token: SeDebugPrivilege	2432	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2516	uhhhhh.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2272	2516	uhhhhh.exe	32
PID 2516 wrote to memory of 2272	2516	uhhhhh.exe	32
PID 2516 wrote to memory of 2272	2516	uhhhhh.exe	32
PID 2516 wrote to memory of 3068	2516	uhhhhh.exe	34
PID 2516 wrote to memory of 3068	2516	uhhhhh.exe	34
PID 2516 wrote to memory of 3068	2516	uhhhhh.exe	34
PID 2516 wrote to memory of 2868	2516	uhhhhh.exe	36
PID 2516 wrote to memory of 2868	2516	uhhhhh.exe	36
PID 2516 wrote to memory of 2868	2516	uhhhhh.exe	36
PID 2516 wrote to memory of 2660	2516	uhhhhh.exe	38
PID 2516 wrote to memory of 2660	2516	uhhhhh.exe	38
PID 2516 wrote to memory of 2660	2516	uhhhhh.exe	38
PID 2516 wrote to memory of 112	2516	uhhhhh.exe	40
PID 2516 wrote to memory of 112	2516	uhhhhh.exe	40
PID 2516 wrote to memory of 112	2516	uhhhhh.exe	40
PID 2648 wrote to memory of 2056	2648	taskeng.exe	44
PID 2648 wrote to memory of 2056	2648	taskeng.exe	44
PID 2648 wrote to memory of 2056	2648	taskeng.exe	44
PID 2648 wrote to memory of 2432	2648	taskeng.exe	45
PID 2648 wrote to memory of 2432	2648	taskeng.exe	45
PID 2648 wrote to memory of 2432	2648	taskeng.exe	45

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\uhhhhh.exe
"C:\Users\Admin\AppData\Local\Temp\uhhhhh.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516
- 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\uhhhhh.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2272
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'uhhhhh.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- 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:2868
- 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:2660
- 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:112

C:\Windows\system32\taskeng.exe
taskeng.exe {DEEF43EB-135C-4013-B975-3515EEE8C2AA} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2056
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
37252420d8ebe00c96144dd63894d8f9

SHA1
c8df2c6c73a7704969b17bef1446661d07729345

SHA256
617989b3b487b46acbdd5f9359bf63b1e085e2b061f234b50119350112f24b97

SHA512
6b6bc712866e496d4a77897e8eeb88af76cd478ad94c021f76f885f62af4b27cadddcbcafc462ca931f1a096f888a1f9fd61d45a5bffc5db91d227f4ae33ab33

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

Filesize
67KB

MD5
3083acc11f7831e5dd4d17f57629e0e8

SHA1
5f8a1bc143cb1358033050ec3bae36ae7b8ca051

SHA256
14d861ab3f84d09ad5b4fe1936b1a363ac513416bbf5f561cc274b7238bf063b

SHA512
6042d29e295d0fe52d3213a0f8efb11163ab03afe4e272cb437e6f543a2e7e58679d6950ef8a79fd4b1d1b94ff3d73467b4ba623560d5af27e7d69d41994176b

Download Submit
memory/2056-39-0x0000000001330000-0x0000000001348000-memory.dmp

Filesize
96KB

Download
memory/2272-7-0x0000000002BF0000-0x0000000002C70000-memory.dmp

Filesize
512KB

Download
memory/2272-8-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2272-9-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2516-2-0x000007FEF6310000-0x000007FEF6CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2516-0-0x000007FEF6313000-0x000007FEF6314000-memory.dmp

Filesize
4KB

Download
memory/2516-28-0x000007FEF6313000-0x000007FEF6314000-memory.dmp

Filesize
4KB

Download
memory/2516-34-0x000007FEF6310000-0x000007FEF6CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2516-1-0x0000000000DD0000-0x0000000000DE8000-memory.dmp

Filesize
96KB

Download
memory/3068-15-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/3068-16-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download