xworm | a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427

General

Target

a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe
Size

78KB
MD5

f674883f69e37d5e3a722563b1f48748
SHA1

8fdaf4b9c976b97868e6213674dfe32da6ade211
SHA256

a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427
SHA512

67d4b154c3bf6c00f2ddfb339a73f8e7bb401c60edf08dfa288c9b4fd83efbfa2fa883b9747e3baa0fa82ec928be9411da74aa9131fde78dea4c391099b93210
SSDEEP

1536:WQZ17ndp2kkXyWicQtmaIRBzA0B+bvdevFl0evl6Dffs0Ol8fGjV:WQZ1THkXFg1s+b1edlPIHs0OlUWV

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

california-advisory.gl.at.ply.gg:55764

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2728-1-0x0000000001220000-0x000000000123A000-memory.dmp	family_xworm
behavioral1/files/0x000c00000001227e-32.dat	family_xworm
behavioral1/memory/2264-34-0x0000000000D90000-0x0000000000DAA000-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
2664	powershell.exe
2644	powershell.exe
2588	powershell.exe
2808	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2264	XClient.exe
1276	XClient.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.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
2072	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2664	powershell.exe
2644	powershell.exe
2588	powershell.exe
2808	powershell.exe
2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2264	XClient.exe
Token: SeDebugPrivilege	1276	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2664	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	30
PID 2728 wrote to memory of 2664	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	30
PID 2728 wrote to memory of 2664	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	30
PID 2728 wrote to memory of 2644	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	32
PID 2728 wrote to memory of 2644	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	32
PID 2728 wrote to memory of 2644	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	32
PID 2728 wrote to memory of 2588	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	34
PID 2728 wrote to memory of 2588	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	34
PID 2728 wrote to memory of 2588	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	34
PID 2728 wrote to memory of 2808	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	36
PID 2728 wrote to memory of 2808	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	36
PID 2728 wrote to memory of 2808	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	36
PID 2728 wrote to memory of 2072	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	38
PID 2728 wrote to memory of 2072	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	38
PID 2728 wrote to memory of 2072	2728	a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe	38
PID 2296 wrote to memory of 2264	2296	taskeng.exe	43
PID 2296 wrote to memory of 2264	2296	taskeng.exe	43
PID 2296 wrote to memory of 2264	2296	taskeng.exe	43
PID 2296 wrote to memory of 1276	2296	taskeng.exe	44
PID 2296 wrote to memory of 1276	2296	taskeng.exe	44
PID 2296 wrote to memory of 1276	2296	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\a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe
"C:\Users\Admin\AppData\Local\Temp\a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2728
- 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\a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- 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:2588
- 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:2808
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2072

C:\Windows\system32\taskeng.exe
taskeng.exe {86BD1433-D0F0-4CC1-867C-1F07C66974FB} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2264
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1276

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

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Downloads

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

Filesize
7KB

MD5
ad0483a371148d0d8fae9510a466d083

SHA1
3fcbe5392aebb97941c40919e1f056a2fea63300

SHA256
276b6146984d954aadb6e55841c4d25787c22e1ad6a8343fd881e90f72934ff2

SHA512
899de7bae1cd07c128f780a82bb3f253af93dad7799524c9dfc48f7ecf2c40482faf3974c01fd7f7526308aaabb11dc45a4ee9645867fa044b1b90e8c6f8eb90

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

Filesize
78KB

MD5
f674883f69e37d5e3a722563b1f48748

SHA1
8fdaf4b9c976b97868e6213674dfe32da6ade211

SHA256
a6a197f6cbf7078086b7da8ea86ea93a28c7cd1ec3e10af473aadafea366c427

SHA512
67d4b154c3bf6c00f2ddfb339a73f8e7bb401c60edf08dfa288c9b4fd83efbfa2fa883b9747e3baa0fa82ec928be9411da74aa9131fde78dea4c391099b93210

Download Submit
memory/2264-34-0x0000000000D90000-0x0000000000DAA000-memory.dmp

Filesize
104KB

Download
memory/2644-14-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2644-15-0x0000000001EC0000-0x0000000001EC8000-memory.dmp

Filesize
32KB

Download
memory/2664-7-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2664-8-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2664-6-0x0000000002D40000-0x0000000002DC0000-memory.dmp

Filesize
512KB

Download
memory/2728-0-0x000007FEF5FF3000-0x000007FEF5FF4000-memory.dmp

Filesize
4KB

Download
memory/2728-28-0x000000001B3E0000-0x000000001B460000-memory.dmp

Filesize
512KB

Download
memory/2728-29-0x000007FEF5FF3000-0x000007FEF5FF4000-memory.dmp

Filesize
4KB

Download
memory/2728-30-0x000000001B3E0000-0x000000001B460000-memory.dmp

Filesize
512KB

Download
memory/2728-1-0x0000000001220000-0x000000000123A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads