xworm | c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35

General

Target

c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe
Size

42KB
MD5

17d3a3e60c84b126ca2c72b1a2a88100
SHA1

5210737c8f6a1cf818ea1868a63c8009780632db
SHA256

c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35
SHA512

8e1ed27c5f72951e76875b8312fbdf65929d2e0f3158f9c1156d9a05b339456aa6654deb74718abb7a6f8c92b647168c0465dcca163cb944c7c81ca79ec32ec7
SSDEEP

768:EqpDpHTSWG3J9E/B0oZ4XVGCqF3t9bd6UOChvIPk:E+DV+BI/2oZ4XV4F99bd6UOClGk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

gay-nursery.gl.at.ply.gg:51408

Mutex

v9Zf3WMcQnnzzZmX

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/848-1-0x0000000000BD0000-0x0000000000BE0000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120fe-31.dat	family_xworm
behavioral1/memory/2812-33-0x0000000001040000-0x0000000001050000-memory.dmp	family_xworm
behavioral1/memory/1492-35-0x0000000001270000-0x0000000001280000-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
2456	powershell.exe
2932	powershell.exe
2084	powershell.exe
2752	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2812	XClient.exe
1492	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.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
2744	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2456	powershell.exe
2932	powershell.exe
2084	powershell.exe
2752	powershell.exe
848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe
Token: SeDebugPrivilege	2456	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2084	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe
Token: SeDebugPrivilege	2812	XClient.exe
Token: SeDebugPrivilege	1492	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2456	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	28
PID 848 wrote to memory of 2456	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	28
PID 848 wrote to memory of 2456	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	28
PID 848 wrote to memory of 2932	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	30
PID 848 wrote to memory of 2932	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	30
PID 848 wrote to memory of 2932	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	30
PID 848 wrote to memory of 2084	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	32
PID 848 wrote to memory of 2084	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	32
PID 848 wrote to memory of 2084	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	32
PID 848 wrote to memory of 2752	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	34
PID 848 wrote to memory of 2752	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	34
PID 848 wrote to memory of 2752	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	34
PID 848 wrote to memory of 2744	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	36
PID 848 wrote to memory of 2744	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	36
PID 848 wrote to memory of 2744	848	c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe	36
PID 832 wrote to memory of 2812	832	taskeng.exe	39
PID 832 wrote to memory of 2812	832	taskeng.exe	39
PID 832 wrote to memory of 2812	832	taskeng.exe	39
PID 832 wrote to memory of 1492	832	taskeng.exe	40
PID 832 wrote to memory of 1492	832	taskeng.exe	40
PID 832 wrote to memory of 1492	832	taskeng.exe	40

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\c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe
"C:\Users\Admin\AppData\Local\Temp\c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:848
- 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\c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- 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:2084
- 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:2752
- 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:2744

C:\Windows\system32\taskeng.exe
taskeng.exe {DC8C2B34-4A03-457A-BFAD-B341BDF094F5} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:832
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2812
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1492

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
cd4a830a6b7dfc1cad2626cc88d6ed6c

SHA1
4f21fe6d2f450ddb8c946ddd824018a71b03baf2

SHA256
93a48670faac186e1f9aa547d29938a7b1bddd66c7f81bc32c0bb60e8dfe15e7

SHA512
ebba1a39411a4ae60259e4b00919bc858ed9f64cf98fc4ec5651db3c042f8ffbcd2f63a60e41409b3d9cccc3f0649b8c4c7a2580c3a7c0e71611756461678b78

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

Filesize
42KB

MD5
17d3a3e60c84b126ca2c72b1a2a88100

SHA1
5210737c8f6a1cf818ea1868a63c8009780632db

SHA256
c9d4b9b3751784bbe0098478aebd2a0f072ac994671b75702503efc69906fd35

SHA512
8e1ed27c5f72951e76875b8312fbdf65929d2e0f3158f9c1156d9a05b339456aa6654deb74718abb7a6f8c92b647168c0465dcca163cb944c7c81ca79ec32ec7

Download Submit
memory/848-27-0x000000001B3C0000-0x000000001B440000-memory.dmp

Filesize
512KB

Download
memory/848-1-0x0000000000BD0000-0x0000000000BE0000-memory.dmp

Filesize
64KB

Download
memory/848-0-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/848-29-0x000000001B3C0000-0x000000001B440000-memory.dmp

Filesize
512KB

Download
memory/848-28-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/1492-35-0x0000000001270000-0x0000000001280000-memory.dmp

Filesize
64KB

Download
memory/2456-7-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2456-8-0x0000000002670000-0x0000000002678000-memory.dmp

Filesize
32KB

Download
memory/2456-6-0x0000000002E10000-0x0000000002E90000-memory.dmp

Filesize
512KB

Download
memory/2812-33-0x0000000001040000-0x0000000001050000-memory.dmp

Filesize
64KB

Download
memory/2932-15-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2932-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads