xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

General

Target

mygame.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1688-1-0x0000000000860000-0x0000000000888000-memory.dmp	family_xworm
behavioral2/files/0x0019000000016c92-36.dat	family_xworm
behavioral2/memory/3008-38-0x0000000000F50000-0x0000000000F78000-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
2168	powershell.exe
2480	powershell.exe
2800	powershell.exe
1236	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3008	Update.exe
1712	Update.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	mygame.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
1968	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1236	powershell.exe
2168	powershell.exe
2480	powershell.exe
2800	powershell.exe
1688	mygame.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	mygame.exe
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeDebugPrivilege	2168	powershell.exe
Token: SeDebugPrivilege	2480	powershell.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	1688	mygame.exe
Token: SeDebugPrivilege	3008	Update.exe
Token: SeDebugPrivilege	1712	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1688	mygame.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1236	1688	mygame.exe	30
PID 1688 wrote to memory of 1236	1688	mygame.exe	30
PID 1688 wrote to memory of 1236	1688	mygame.exe	30
PID 1688 wrote to memory of 2168	1688	mygame.exe	32
PID 1688 wrote to memory of 2168	1688	mygame.exe	32
PID 1688 wrote to memory of 2168	1688	mygame.exe	32
PID 1688 wrote to memory of 2480	1688	mygame.exe	34
PID 1688 wrote to memory of 2480	1688	mygame.exe	34
PID 1688 wrote to memory of 2480	1688	mygame.exe	34
PID 1688 wrote to memory of 2800	1688	mygame.exe	36
PID 1688 wrote to memory of 2800	1688	mygame.exe	36
PID 1688 wrote to memory of 2800	1688	mygame.exe	36
PID 1688 wrote to memory of 1968	1688	mygame.exe	38
PID 1688 wrote to memory of 1968	1688	mygame.exe	38
PID 1688 wrote to memory of 1968	1688	mygame.exe	38
PID 2196 wrote to memory of 3008	2196	taskeng.exe	42
PID 2196 wrote to memory of 3008	2196	taskeng.exe	42
PID 2196 wrote to memory of 3008	2196	taskeng.exe	42
PID 2196 wrote to memory of 1712	2196	taskeng.exe	43
PID 2196 wrote to memory of 1712	2196	taskeng.exe	43
PID 2196 wrote to memory of 1712	2196	taskeng.exe	43

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\mygame.exe
"C:\Users\Admin\AppData\Local\Temp\mygame.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:1688
- 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\mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2168
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1968

C:\Windows\system32\taskeng.exe
taskeng.exe {DC844066-A989-4C82-B6EB-DC7C349B43AD} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3008
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1712

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
379cac036808987c8437425324f52252

SHA1
f6ad1852c9a251df442ddd1c4ef823f3fb2b0b28

SHA256
bf9ce378282ff11a0220cf893158f9bcc1722437e1f64ce91ec3d61fd7037d56

SHA512
b2132296a172aa91cc6cac5f95aa4d18dcace18bbe352705bcaf114dbcd786b38e3b7023334a5c6a51c5c1d67584d8cb9cf07a8ba7bbeb0d155f2aa07c9767b7

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

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/1236-6-0x0000000002970000-0x00000000029F0000-memory.dmp

Filesize
512KB

Download
memory/1236-7-0x000000001B280000-0x000000001B562000-memory.dmp

Filesize
2.9MB

Download
memory/1236-8-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/1688-28-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

Filesize
4KB

Download
memory/1688-0-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

Filesize
4KB

Download
memory/1688-32-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/1688-33-0x000000001B1C0000-0x000000001B240000-memory.dmp

Filesize
512KB

Download
memory/1688-1-0x0000000000860000-0x0000000000888000-memory.dmp

Filesize
160KB

Download
memory/2168-15-0x0000000002560000-0x0000000002568000-memory.dmp

Filesize
32KB

Download
memory/2168-14-0x000000001B2A0000-0x000000001B582000-memory.dmp

Filesize
2.9MB

Download
memory/3008-38-0x0000000000F50000-0x0000000000F78000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads