xworm | a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe

General

Target

a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe
Size

73KB
MD5

ae9ac9900b634355242a67a84c631f13
SHA1

33b6b44502a6ab4d83ebc43459104895dba03247
SHA256

a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe
SHA512

0d6b0d188b445fe4ee0154e9041ab62d2fbd697ad9f1829b179511f81cbfc80179c6483e82fbd8c09d43d094022f6adf67f6282278a6ffdd34979c3708c4cb0b
SSDEEP

1536:at1xRmYXr9E5v9mt8pt3h9Ibm6Yk9Fc7RCa6e0OKcVBSKgcyyy:at1xRmYXwf7Ibdw1CNOPSzpyy

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

rating-action.gl.at.ply.gg::8848

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/3056-1-0x0000000000300000-0x0000000000318000-memory.dmp	family_xworm
behavioral1/files/0x0006000000004ed7-34.dat	family_xworm
behavioral1/memory/484-36-0x0000000000D40000-0x0000000000D58000-memory.dmp	family_xworm
behavioral1/memory/1644-39-0x00000000003F0000-0x0000000000408000-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
2596	powershell.exe
2592	powershell.exe
2848	powershell.exe
2440	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\svchost.lnk	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe

Executes dropped EXE 2 IoCs

pid	Process
484	svchost.exe
1644	svchost.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.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
1560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2596	powershell.exe
2592	powershell.exe
2848	powershell.exe
2440	powershell.exe
3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	2848	powershell.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe
Token: SeDebugPrivilege	484	svchost.exe
Token: SeDebugPrivilege	1644	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2596	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	32
PID 3056 wrote to memory of 2596	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	32
PID 3056 wrote to memory of 2596	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	32
PID 3056 wrote to memory of 2592	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	34
PID 3056 wrote to memory of 2592	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	34
PID 3056 wrote to memory of 2592	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	34
PID 3056 wrote to memory of 2848	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	36
PID 3056 wrote to memory of 2848	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	36
PID 3056 wrote to memory of 2848	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	36
PID 3056 wrote to memory of 2440	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	38
PID 3056 wrote to memory of 2440	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	38
PID 3056 wrote to memory of 2440	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	38
PID 3056 wrote to memory of 1560	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	40
PID 3056 wrote to memory of 1560	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	40
PID 3056 wrote to memory of 1560	3056	a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe	40
PID 532 wrote to memory of 484	532	taskeng.exe	43
PID 532 wrote to memory of 484	532	taskeng.exe	43
PID 532 wrote to memory of 484	532	taskeng.exe	43
PID 532 wrote to memory of 1644	532	taskeng.exe	45
PID 532 wrote to memory of 1644	532	taskeng.exe	45
PID 532 wrote to memory of 1644	532	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\a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe
"C:\Users\Admin\AppData\Local\Temp\a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.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:3056
- 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\a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2592
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2440
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1560

C:\Windows\system32\taskeng.exe
taskeng.exe {E12FA1BC-7D98-4F06-A0EC-021988B2FF96} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:532
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:484
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1644

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
ed40a5a5d37e23b4036a56e89705d3af

SHA1
30c8b8ee1ba9631ce5acb556c51b6db3931f1ed3

SHA256
b08878b97184dd64a8405eb931fceb8551a0014c1a59a5d76a90cb90377470bb

SHA512
8c998f6eb57e320fbdde1192cb737723287a89bef5771815f76f9516b1bf4d568420d309bc369cf1411c944d9a36c76cf0695edd6cd57dbbbeb664462c1cbdac

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

Filesize
73KB

MD5
ae9ac9900b634355242a67a84c631f13

SHA1
33b6b44502a6ab4d83ebc43459104895dba03247

SHA256
a443a9721377ce3c94df8b54d214c082e51d113ab9f69129d93a802505216cbe

SHA512
0d6b0d188b445fe4ee0154e9041ab62d2fbd697ad9f1829b179511f81cbfc80179c6483e82fbd8c09d43d094022f6adf67f6282278a6ffdd34979c3708c4cb0b

Download Submit
memory/484-36-0x0000000000D40000-0x0000000000D58000-memory.dmp

Filesize
96KB

Download
memory/1644-39-0x00000000003F0000-0x0000000000408000-memory.dmp

Filesize
96KB

Download
memory/2592-18-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2592-17-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2596-10-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2596-11-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download
memory/2596-9-0x00000000026E0000-0x0000000002760000-memory.dmp

Filesize
512KB

Download
memory/3056-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/3056-4-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/3056-3-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/3056-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/3056-1-0x0000000000300000-0x0000000000318000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads