xworm | 305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33

General

Target

305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe
Size

199KB
MD5

cc6a07e8eb3c8dea437966454382bcf8
SHA1

3bc8c0e5dff8562047bc05aea555c35f7e47d9b1
SHA256

305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33
SHA512

cb7864f782c157c1d35c0403f06469800922ef626dae9493136215e535e3cbb3cca640110e93ee674719b47770456c7dbb1f0cc2daf13a7bc58ea9b676ee1038
SSDEEP

3072:OF71uyVqkbwzBYOw5TJBlFYmHl5rbxBo:Oh19VxbwS9vYmFT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:52585

oil-calculated.gl.at.ply.gg:52585

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2888-1-0x0000000001030000-0x0000000001068000-memory.dmp	family_xworm
behavioral1/files/0x000d000000012029-34.dat	family_xworm
behavioral1/memory/2948-36-0x0000000000EA0000-0x0000000000ED8000-memory.dmp	family_xworm
behavioral1/memory/1056-40-0x00000000010B0000-0x00000000010E8000-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
2808	powershell.exe
2700	powershell.exe
1920	powershell.exe
956	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe

Executes dropped EXE 3 IoCs

pid	Process
2948	XClient.exe
1056	XClient.exe
1736	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.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
1936	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2808	powershell.exe
2700	powershell.exe
1920	powershell.exe
956	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	1920	powershell.exe
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe
Token: SeDebugPrivilege	2948	XClient.exe
Token: SeDebugPrivilege	1056	XClient.exe
Token: SeDebugPrivilege	1736	XClient.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2808	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	30
PID 2888 wrote to memory of 2808	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	30
PID 2888 wrote to memory of 2808	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	30
PID 2888 wrote to memory of 2700	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	32
PID 2888 wrote to memory of 2700	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	32
PID 2888 wrote to memory of 2700	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	32
PID 2888 wrote to memory of 1920	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	34
PID 2888 wrote to memory of 1920	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	34
PID 2888 wrote to memory of 1920	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	34
PID 2888 wrote to memory of 956	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	36
PID 2888 wrote to memory of 956	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	36
PID 2888 wrote to memory of 956	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	36
PID 2888 wrote to memory of 1936	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	38
PID 2888 wrote to memory of 1936	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	38
PID 2888 wrote to memory of 1936	2888	305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe	38
PID 468 wrote to memory of 2948	468	taskeng.exe	42
PID 468 wrote to memory of 2948	468	taskeng.exe	42
PID 468 wrote to memory of 2948	468	taskeng.exe	42
PID 468 wrote to memory of 1056	468	taskeng.exe	44
PID 468 wrote to memory of 1056	468	taskeng.exe	44
PID 468 wrote to memory of 1056	468	taskeng.exe	44
PID 468 wrote to memory of 1736	468	taskeng.exe	45
PID 468 wrote to memory of 1736	468	taskeng.exe	45
PID 468 wrote to memory of 1736	468	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\305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe
"C:\Users\Admin\AppData\Local\Temp\305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888
- 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\305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2808
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- 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:1920
- 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:956
- 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:1936

C:\Windows\system32\taskeng.exe
taskeng.exe {AFB2F5DB-347C-4FD0-B448-F0F0B8D329F0} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:468
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2948
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1056
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1736

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
735f43360880ae14d2cae4faf89d200e

SHA1
0789b731e47659656eecf4c5f756622e2f57eb27

SHA256
7f4f5e0bc3e055feb1d54382c1a58059a364aaed21b09b49e415ebaa0fdc70b4

SHA512
d20c317b1cee79e63b24c711016634f11a6c3615178cd9e849970762fb349758f6a507360366020cd728816ef53c8eb07c0213d881c523ba5f81bf49439bf2a1

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

Filesize
199KB

MD5
cc6a07e8eb3c8dea437966454382bcf8

SHA1
3bc8c0e5dff8562047bc05aea555c35f7e47d9b1

SHA256
305a039e946b1940b70a70da8a01708263ed8cfa5f68252bd6cff1fde16eaa33

SHA512
cb7864f782c157c1d35c0403f06469800922ef626dae9493136215e535e3cbb3cca640110e93ee674719b47770456c7dbb1f0cc2daf13a7bc58ea9b676ee1038

Download Submit
memory/1056-40-0x00000000010B0000-0x00000000010E8000-memory.dmp

Filesize
224KB

Download
memory/2700-15-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2700-14-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/2808-7-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2808-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2808-6-0x0000000002BB0000-0x0000000002C30000-memory.dmp

Filesize
512KB

Download
memory/2888-0-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

Filesize
4KB

Download
memory/2888-31-0x000000001AFB0000-0x000000001B030000-memory.dmp

Filesize
512KB

Download
memory/2888-32-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

Filesize
4KB

Download
memory/2888-37-0x000000001AFB0000-0x000000001B030000-memory.dmp

Filesize
512KB

Download
memory/2888-1-0x0000000001030000-0x0000000001068000-memory.dmp

Filesize
224KB

Download
memory/2948-36-0x0000000000EA0000-0x0000000000ED8000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads