xworm | b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809

General

Target

injector.exe
Size

49KB
MD5

37fbd83271e9f0a2dbe4372ec015c23f
SHA1

7deaca82f648bc67b5cc86e20696fff3a6a957a9
SHA256

b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809
SHA512

a3eff87bf8f4d8265706aa366060b661628a8621441762078356e029ea23f6369bf3d807e33b4ca8ff0adb84f8ab17cd46fd7a5387237c2be81ba57d83c7d300
SSDEEP

768:ZWO7VMyjFxpyKlSFyx9DKx6YOjhNOKEkzbwonH8wSpO1bNX:ggVMy/sBFU9DU6YOjq1EwoH865F

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

https://pastebin.com/raw/r8P3Ngmc:324

Mutex

LrtSM6IVyhGy1fuw

Attributes

Install_directory
%AppData%
install_file
injector.exe
pastebin_url
https://pastebin.com/raw/r8P3Ngmc

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2232-1-0x0000000000AF0000-0x0000000000B02000-memory.dmp	family_xworm
behavioral2/memory/2668-6-0x0000000002D30000-0x0000000002DB0000-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
2668	powershell.exe
2984	powershell.exe
2864	powershell.exe
3068	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\injector = "C:\\Users\\Admin\\AppData\\Roaming\\injector.exe"	injector.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
2	pastebin.com
3	pastebin.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2668	powershell.exe
2984	powershell.exe
2864	powershell.exe
3068	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	injector.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	3068	powershell.exe
Token: SeDebugPrivilege	2232	injector.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2668	2232	injector.exe	31
PID 2232 wrote to memory of 2668	2232	injector.exe	31
PID 2232 wrote to memory of 2668	2232	injector.exe	31
PID 2232 wrote to memory of 2984	2232	injector.exe	33
PID 2232 wrote to memory of 2984	2232	injector.exe	33
PID 2232 wrote to memory of 2984	2232	injector.exe	33
PID 2232 wrote to memory of 2864	2232	injector.exe	35
PID 2232 wrote to memory of 2864	2232	injector.exe	35
PID 2232 wrote to memory of 2864	2232	injector.exe	35
PID 2232 wrote to memory of 3068	2232	injector.exe	37
PID 2232 wrote to memory of 3068	2232	injector.exe	37
PID 2232 wrote to memory of 3068	2232	injector.exe	37

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2984
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2864
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
271890e363556fdd492e08fb77023017

SHA1
46e7c94042ec8ce709ac3877789efc8b94271234

SHA256
b53bea49dec393c4a3759d0c3fe517e762093a375f487924875eb9808535ffe7

SHA512
e21081ea755017331e98ecfb13afeb9744bb7a234aa107fe29c1318b5b844f9c0e32b750d42b73b69b7319b542716842e8962d4e1837af14e4dfcbbc7ce392a7

Download Submit
memory/2232-0-0x000007FEF62D3000-0x000007FEF62D4000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x0000000000AF0000-0x0000000000B02000-memory.dmp

Filesize
72KB

Download
memory/2232-31-0x000000001B290000-0x000000001B310000-memory.dmp

Filesize
512KB

Download
memory/2232-32-0x000007FEF62D3000-0x000007FEF62D4000-memory.dmp

Filesize
4KB

Download
memory/2232-33-0x000000001B290000-0x000000001B310000-memory.dmp

Filesize
512KB

Download
memory/2668-6-0x0000000002D30000-0x0000000002DB0000-memory.dmp

Filesize
512KB

Download
memory/2668-7-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2668-8-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2984-14-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2984-15-0x0000000002A70000-0x0000000002A78000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads