xworm | baa8ace81d5e51f20fea99bf6b8de26c594a2011b670883304e085e5a9847eb2

General

Target

XClient.exe
Size

80KB
MD5

bfa950b37b6a4f8de71af861e677a8b4
SHA1

2ee40bfbf2964d92c82256e5924169295dfdd225
SHA256

07f94f8f6061ba95899914496edc5854aa810de56797d9004875276d60e21ade
SHA512

235b514fac01b24edaef3aeb4209676789b6ba9264a8798cb7ae48c26d2455cdd8f254e92bbba688535acb69fd77b3c0a0a549cf97ece84c235cc74f72234e1a
SSDEEP

1536:EI5NuEGJkEtydWqZQSp1eS+b59gxzhfxdl/5m6qeo//3Oy/4IK4Dax5:Eg1GhtktQGAS+b59cJ4eA/OlINDab

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

full-self.gl.at.ply.gg:45212

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2072-1-0x0000000000060000-0x000000000007A000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
2164	powershell.exe
2772	powershell.exe
2560	powershell.exe
2520	powershell.exe

Deletes itself 1 IoCs

pid	Process
1640	cmd.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1784	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2164	powershell.exe
2772	powershell.exe
2560	powershell.exe
2520	powershell.exe
2072	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	XClient.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2560	powershell.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeDebugPrivilege	2072	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2072	XClient.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2164	2072	XClient.exe	31
PID 2072 wrote to memory of 2164	2072	XClient.exe	31
PID 2072 wrote to memory of 2164	2072	XClient.exe	31
PID 2072 wrote to memory of 2772	2072	XClient.exe	33
PID 2072 wrote to memory of 2772	2072	XClient.exe	33
PID 2072 wrote to memory of 2772	2072	XClient.exe	33
PID 2072 wrote to memory of 2560	2072	XClient.exe	35
PID 2072 wrote to memory of 2560	2072	XClient.exe	35
PID 2072 wrote to memory of 2560	2072	XClient.exe	35
PID 2072 wrote to memory of 2520	2072	XClient.exe	37
PID 2072 wrote to memory of 2520	2072	XClient.exe	37
PID 2072 wrote to memory of 2520	2072	XClient.exe	37
PID 2072 wrote to memory of 1640	2072	XClient.exe	40
PID 2072 wrote to memory of 1640	2072	XClient.exe	40
PID 2072 wrote to memory of 1640	2072	XClient.exe	40
PID 1640 wrote to memory of 1784	1640	cmd.exe	42
PID 1640 wrote to memory of 1784	1640	cmd.exe	42
PID 1640 wrote to memory of 1784	1640	cmd.exe	42

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2072
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2164
- 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:2772
- 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:2560
- 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:2520
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5D0E.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1784

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5D0E.tmp.bat

Filesize
159B

MD5
c22a7fa15b2291bed657da7d6efebfbb

SHA1
9db4d525af58dc88487500c0f55c1b08ed365439

SHA256
05fa1f81cb17042bcc259a0af613e515b9ff6d6f2caa71f72b1ecd68b4dea3bf

SHA512
75f5ba200cebadb01995107a6f5e4e6df1a91c871a1f918c3c7ac55c6c0a514beec2b5d47dff94c9d29a006c62b19a8587e1a33a8eb379d8745c082a98ebc249

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

Filesize
7KB

MD5
9a4e1353e6a0e277dc197eebf469b892

SHA1
6a9a3424167290ae14d709659e33a4e0d0f3af57

SHA256
9328f6a8b170b7522acbd5867ce26c9002ead04a3478d463e6943e88f9f53361

SHA512
6ca70298fa3de4eaedba5af296840425155398f5978a9e210d0db882db22cadac7745149f0a06ce245b0b59f8cde0e098378363aa809e3175ead4d1e0e3adb88

Download Submit
memory/2072-0-0x000007FEF4D53000-0x000007FEF4D54000-memory.dmp

Filesize
4KB

Download
memory/2072-1-0x0000000000060000-0x000000000007A000-memory.dmp

Filesize
104KB

Download
memory/2072-27-0x000000001B140000-0x000000001B1C0000-memory.dmp

Filesize
512KB

Download
memory/2072-28-0x000007FEF4D53000-0x000007FEF4D54000-memory.dmp

Filesize
4KB

Download
memory/2164-6-0x00000000024C0000-0x0000000002540000-memory.dmp

Filesize
512KB

Download
memory/2164-7-0x000000001B2A0000-0x000000001B582000-memory.dmp

Filesize
2.9MB

Download
memory/2164-8-0x00000000024A0000-0x00000000024A8000-memory.dmp

Filesize
32KB

Download
memory/2772-14-0x000000001B250000-0x000000001B532000-memory.dmp

Filesize
2.9MB

Download
memory/2772-15-0x00000000024E0000-0x00000000024E8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads