xworm | 760f5ddd00760be411967d77224b29a48e00e1eed0e978ba4017979595d1637e

Analysis

max time kernel
133s
max time network
167s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:11

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General

Target

642fefb64c917e4bfd08481bb0727b0c.exe
Size

34KB
MD5

642fefb64c917e4bfd08481bb0727b0c
SHA1

17dad311c85853e4592769d15508d5fd562c8f21
SHA256

7c4df939396840b23f105b1bf45333f1f382adbbfc886f930e8e1f0384291e3a
SHA512

aa192797b25be45469e359602ba24837d967fc04e4cafc136998a4b7c39452a7227a481a7792e9af68bd81a5be8bf0e82cf304d50c9e9ba70a3d17a78edc86f1
SSDEEP

768:tVMy/GVquW7DizR4oa5Ooi/OQFyH9K16WO/h1bEs:LioDS4OoAJFa9K16WO/nEs

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

147.185.221.27:2926

Mutex

gNUymsZlOwOSH86A

Attributes

Install_directory
%ProgramData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral5/memory/2340-1-0x00000000011F0000-0x00000000011FE000-memory.dmp	family_xworm
behavioral5/files/0x000b000000003683-29.dat	family_xworm
behavioral5/memory/1932-37-0x0000000000CB0000-0x0000000000CBE000-memory.dmp	family_xworm
behavioral5/memory/1184-39-0x0000000000E90000-0x0000000000E9E000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1620	powershell.exe
2876	powershell.exe
2164	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\642fefb64c917e4bfd08481bb0727b0c.lnk	642fefb64c917e4bfd08481bb0727b0c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\642fefb64c917e4bfd08481bb0727b0c.lnk	642fefb64c917e4bfd08481bb0727b0c.exe

Executes dropped EXE 2 IoCs

pid	Process
1932	642fefb64c917e4bfd08481bb0727b0c.exe
1184	642fefb64c917e4bfd08481bb0727b0c.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\642fefb64c917e4bfd08481bb0727b0c = "C:\\ProgramData\\642fefb64c917e4bfd08481bb0727b0c.exe"	642fefb64c917e4bfd08481bb0727b0c.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
2672	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1620	powershell.exe
2876	powershell.exe
2164	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	642fefb64c917e4bfd08481bb0727b0c.exe
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	2340	642fefb64c917e4bfd08481bb0727b0c.exe
Token: SeDebugPrivilege	1932	642fefb64c917e4bfd08481bb0727b0c.exe
Token: SeDebugPrivilege	1184	642fefb64c917e4bfd08481bb0727b0c.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 1620	2340	642fefb64c917e4bfd08481bb0727b0c.exe	31
PID 2340 wrote to memory of 1620	2340	642fefb64c917e4bfd08481bb0727b0c.exe	31
PID 2340 wrote to memory of 1620	2340	642fefb64c917e4bfd08481bb0727b0c.exe	31
PID 2340 wrote to memory of 2876	2340	642fefb64c917e4bfd08481bb0727b0c.exe	33
PID 2340 wrote to memory of 2876	2340	642fefb64c917e4bfd08481bb0727b0c.exe	33
PID 2340 wrote to memory of 2876	2340	642fefb64c917e4bfd08481bb0727b0c.exe	33
PID 2340 wrote to memory of 2164	2340	642fefb64c917e4bfd08481bb0727b0c.exe	35
PID 2340 wrote to memory of 2164	2340	642fefb64c917e4bfd08481bb0727b0c.exe	35
PID 2340 wrote to memory of 2164	2340	642fefb64c917e4bfd08481bb0727b0c.exe	35
PID 2340 wrote to memory of 2672	2340	642fefb64c917e4bfd08481bb0727b0c.exe	37
PID 2340 wrote to memory of 2672	2340	642fefb64c917e4bfd08481bb0727b0c.exe	37
PID 2340 wrote to memory of 2672	2340	642fefb64c917e4bfd08481bb0727b0c.exe	37
PID 2820 wrote to memory of 1932	2820	taskeng.exe	40
PID 2820 wrote to memory of 1932	2820	taskeng.exe	40
PID 2820 wrote to memory of 1932	2820	taskeng.exe	40
PID 2820 wrote to memory of 1184	2820	taskeng.exe	42
PID 2820 wrote to memory of 1184	2820	taskeng.exe	42
PID 2820 wrote to memory of 1184	2820	taskeng.exe	42

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\642fefb64c917e4bfd08481bb0727b0c.exe
"C:\Users\Admin\AppData\Local\Temp\642fefb64c917e4bfd08481bb0727b0c.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- 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\642fefb64c917e4bfd08481bb0727b0c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '642fefb64c917e4bfd08481bb0727b0c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2164
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "642fefb64c917e4bfd08481bb0727b0c" /tr "C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2672

C:\Windows\system32\taskeng.exe
taskeng.exe {24EC03DA-AD29-4491-AAA9-51478BB4FCE2} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2820
- C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe
  C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1932
- C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe
  C:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1184

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:\ProgramData\642fefb64c917e4bfd08481bb0727b0c.exe

Filesize
34KB

MD5
642fefb64c917e4bfd08481bb0727b0c

SHA1
17dad311c85853e4592769d15508d5fd562c8f21

SHA256
7c4df939396840b23f105b1bf45333f1f382adbbfc886f930e8e1f0384291e3a

SHA512
aa192797b25be45469e359602ba24837d967fc04e4cafc136998a4b7c39452a7227a481a7792e9af68bd81a5be8bf0e82cf304d50c9e9ba70a3d17a78edc86f1

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

Filesize
7KB

MD5
7994320d6ec63881bb5670dd983aa5b1

SHA1
8c882d94507ad1b7c51e17030cc7f09a39f09311

SHA256
cd642b0ebc912000d80ec225b7c2d89329748fee263310fb41607d6f22b8e558

SHA512
0efce68e468d994c8e8403558d92e2ced97b4c2fc74866feb2c956f4edf222e42c100335b2ca8f56945f675135325a6922a68533d69bd45e06a7ed2d69ffffd1

Download Submit
memory/1184-39-0x0000000000E90000-0x0000000000E9E000-memory.dmp

Filesize
56KB

Download
memory/1620-7-0x000000001B260000-0x000000001B542000-memory.dmp

Filesize
2.9MB

Download
memory/1620-8-0x0000000002670000-0x0000000002678000-memory.dmp

Filesize
32KB

Download
memory/1620-6-0x0000000002920000-0x00000000029A0000-memory.dmp

Filesize
512KB

Download
memory/1932-37-0x0000000000CB0000-0x0000000000CBE000-memory.dmp

Filesize
56KB

Download
memory/2340-16-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2340-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2340-31-0x000000001A860000-0x000000001A8E0000-memory.dmp

Filesize
512KB

Download
memory/2340-32-0x000000001A860000-0x000000001A8E0000-memory.dmp

Filesize
512KB

Download
memory/2340-1-0x00000000011F0000-0x00000000011FE000-memory.dmp

Filesize
56KB

Download
memory/2876-14-0x000000001B1F0000-0x000000001B4D2000-memory.dmp

Filesize
2.9MB

Download
memory/2876-15-0x0000000002370000-0x0000000002378000-memory.dmp

Filesize
32KB

Download