xworm | 53c02ff543f5ebbf596f707a1a1feaade8c743eceb22d050d34c31d15d7a0ba1

General

Target

XWorm/XWorm 5.6.exe
Size

40KB
MD5

496c3225443deab6949914cd224046f4
SHA1

18b75bbac53042d66ccddb565e3a5a8547cc563f
SHA256

875d88c284b312b7858c2fd2b683036c16f9f914bce35ca8fa87ccfb2db202be
SHA512

2d7c2436244bd5d5908cdae5ec7dae1ef10eae421204c48dfcce77162d0b8a3fb90a6a9acfc9a310d30b241b62b0e79a7464503fff873cf73f331b8d20bd9dec
SSDEEP

768:CNZ4ZV7QMND9Pf7PnDPItE9/JF5Py9Ovzf6SOMhS33iP:My7Qo1TPnDP5xFs9C76SOMIW

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:55967

ca-assessing.gl.at.ply.gg:55967

Mutex

0VAbVWRVWwPHtkmk

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3220-1-0x0000000000DC0000-0x0000000000DD0000-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
2056	powershell.exe
4976	powershell.exe
3000	powershell.exe
1904	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	XWorm 5.6.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ayo = "C:\\Users\\Admin\\AppData\\Roaming\\ayo"	XWorm 5.6.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
10	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 9 IoCs

pid	Process
4976	powershell.exe
4976	powershell.exe
3000	powershell.exe
3000	powershell.exe
1904	powershell.exe
1904	powershell.exe
2056	powershell.exe
2056	powershell.exe
3220	XWorm 5.6.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3220	XWorm 5.6.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	3000	powershell.exe
Token: SeDebugPrivilege	1904	powershell.exe
Token: SeDebugPrivilege	2056	powershell.exe
Token: SeDebugPrivilege	3220	XWorm 5.6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3220	XWorm 5.6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 4976	3220	XWorm 5.6.exe	83
PID 3220 wrote to memory of 4976	3220	XWorm 5.6.exe	83
PID 3220 wrote to memory of 3000	3220	XWorm 5.6.exe	85
PID 3220 wrote to memory of 3000	3220	XWorm 5.6.exe	85
PID 3220 wrote to memory of 1904	3220	XWorm 5.6.exe	87
PID 3220 wrote to memory of 1904	3220	XWorm 5.6.exe	87
PID 3220 wrote to memory of 2056	3220	XWorm 5.6.exe	89
PID 3220 wrote to memory of 2056	3220	XWorm 5.6.exe	89

C:\Users\Admin\AppData\Local\Temp\XWorm\XWorm 5.6.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm\XWorm 5.6.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3220
- 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\XWorm\XWorm 5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWorm 5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3000
- 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\ayo'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ayo'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
3a6bad9528f8e23fb5c77fbd81fa28e8

SHA1
f127317c3bc6407f536c0f0600dcbcf1aabfba36

SHA256
986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

SHA512
846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
e2efbfd23e33d8d07d019bdd9ca20649

SHA1
68d3b285c423d311bdf8dc53354f5f4000caf386

SHA256
f4386e3a103dafd6e85bebc2ad649069d168b4da8a0ded51b3ec96fa1408a828

SHA512
b7a961002557ff2efb785f756c9347e250392eab3dcb5168c67e89238e85368a41d0a5bdc94bfbbc192ba427c83e982234b3cf8824b166a69973f3f9df177443

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
75d224e238a397659d8e5cf458a41143

SHA1
d182d16283d3d864a2e328b677551428c29ad6df

SHA256
6a98fa5e6c5b77722f2bd8c855fd14d6bf545fc35b292252d1dc136b89ed2fee

SHA512
3477f3b4182ffdccc817de4242c8fcba706c193a0de5170cd023f8df3d330487d7e372556524b5a0fe1df56de40923700f3f8368eadf6601970e347cbcf078cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ctrbj1pg.fxs.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3220-0-0x00007FFD99B73000-0x00007FFD99B75000-memory.dmp

Filesize
8KB

Download
memory/3220-2-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download
memory/3220-1-0x0000000000DC0000-0x0000000000DD0000-memory.dmp

Filesize
64KB

Download
memory/3220-54-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download
memory/4976-8-0x000001BA5ECE0000-0x000001BA5ED02000-memory.dmp

Filesize
136KB

Download
memory/4976-14-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download
memory/4976-15-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download
memory/4976-18-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download
memory/4976-13-0x00007FFD99B70000-0x00007FFD9A631000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads