xworm | 08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348

General

Target

08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe
Size

83KB
MD5

36939c097b21a057cd3cf29bd7d2e24c
SHA1

2d120533e21e0f4a5154deb56d552613c51e5a78
SHA256

08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348
SHA512

77e477f3cf131949f028e18ed6fe4903cd744ca47250e4728faa2b29ba9afa2259be6cbf29ffea9cdd7be13966b58faa47c4408e11048a9bc9ef88c1ef7a0522
SSDEEP

1536:KOItpoEucVEhr9AOlcQQn8YTlbrfikUSNG6eqhyOXcY1VA38:TBEfefAOlHQ8YTlbrfi7SN2qYOXcYM38

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

primary-organizing.gl.at.ply.gg:16003

Attributes

Install_directory
%AppData%
install_file
System.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000C60000-0x0000000000C7C000-memory.dmp	family_xworm
behavioral1/files/0x000b000000016de4-35.dat	family_xworm
behavioral1/memory/1512-37-0x0000000000110000-0x000000000012C000-memory.dmp	family_xworm
behavioral1/memory/2508-40-0x0000000000EE0000-0x0000000000EFC000-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
2824	powershell.exe
2672	powershell.exe
2176	powershell.exe
2760	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe

Executes dropped EXE 2 IoCs

pid	Process
1512	System.exe
2508	System.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Roaming\\System.exe"	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.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
812	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2760	powershell.exe
2824	powershell.exe
2672	powershell.exe
2176	powershell.exe
2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe
Token: SeDebugPrivilege	1512	System.exe
Token: SeDebugPrivilege	2508	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2760	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	32
PID 2960 wrote to memory of 2760	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	32
PID 2960 wrote to memory of 2760	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	32
PID 2960 wrote to memory of 2824	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	34
PID 2960 wrote to memory of 2824	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	34
PID 2960 wrote to memory of 2824	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	34
PID 2960 wrote to memory of 2672	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	36
PID 2960 wrote to memory of 2672	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	36
PID 2960 wrote to memory of 2672	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	36
PID 2960 wrote to memory of 2176	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	38
PID 2960 wrote to memory of 2176	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	38
PID 2960 wrote to memory of 2176	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	38
PID 2960 wrote to memory of 812	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	40
PID 2960 wrote to memory of 812	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	40
PID 2960 wrote to memory of 812	2960	08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe	40
PID 1384 wrote to memory of 1512	1384	taskeng.exe	43
PID 1384 wrote to memory of 1512	1384	taskeng.exe	43
PID 1384 wrote to memory of 1512	1384	taskeng.exe	43
PID 1384 wrote to memory of 2508	1384	taskeng.exe	44
PID 1384 wrote to memory of 2508	1384	taskeng.exe	44
PID 1384 wrote to memory of 2508	1384	taskeng.exe	44

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\08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe
"C:\Users\Admin\AppData\Local\Temp\08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.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:2960
- 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\08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- 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\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2176
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\Users\Admin\AppData\Roaming\System.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:812

C:\Windows\system32\taskeng.exe
taskeng.exe {54D8BEF1-4B3B-4D13-96F3-3DC45C25ADBC} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Roaming\System.exe
  C:\Users\Admin\AppData\Roaming\System.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1512
- C:\Users\Admin\AppData\Roaming\System.exe
  C:\Users\Admin\AppData\Roaming\System.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
965a2ea8b62ae1eb2b519b5f3a22bdd0

SHA1
1541dfe224d326e7a82f27c50262655b1fd63d78

SHA256
e322aa3e40c114fcbc06740939e8e52a1d46ba8f1409f06951f4bc3a5ac81d27

SHA512
12d58a532af9baf71344a9d18cc9434319b3afd1312a451027a0bf9a77964f6fc26f535e86ce5718f1d9d3de5f393c6bb9b7edebe0aa13a0aec56692a7c960c5

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

Filesize
83KB

MD5
36939c097b21a057cd3cf29bd7d2e24c

SHA1
2d120533e21e0f4a5154deb56d552613c51e5a78

SHA256
08aaaa2767a0a4fd7eced1d065b7be7c0c67692b62b44bf4c69bf43bdbb9a348

SHA512
77e477f3cf131949f028e18ed6fe4903cd744ca47250e4728faa2b29ba9afa2259be6cbf29ffea9cdd7be13966b58faa47c4408e11048a9bc9ef88c1ef7a0522

Download Submit
memory/1512-37-0x0000000000110000-0x000000000012C000-memory.dmp

Filesize
112KB

Download
memory/2508-40-0x0000000000EE0000-0x0000000000EFC000-memory.dmp

Filesize
112KB

Download
memory/2760-7-0x0000000002CD0000-0x0000000002D50000-memory.dmp

Filesize
512KB

Download
memory/2760-8-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2760-9-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/2824-15-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2824-16-0x0000000002770000-0x0000000002778000-memory.dmp

Filesize
32KB

Download
memory/2960-2-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2960-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2960-28-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2960-33-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2960-1-0x0000000000C60000-0x0000000000C7C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads