xworm | a973208f7dff8f3ef5777da04f73415801f2f2ded3ea44077ca9a695a7965d66

General

Target

XClient.exe
Size

64KB
MD5

1ff6154dbcb71d60e924548345b984da
SHA1

075b5dbfbe99a2bc6e01db6c831a06878ff5cfbe
SHA256

a973208f7dff8f3ef5777da04f73415801f2f2ded3ea44077ca9a695a7965d66
SHA512

7bee117cdec90e0a1a7efa62679423d70b585e8d5de6f54a44241e4a44bca789d2c3eeebe85112bf88688e40abd3511308d0c2c6d3c42f69575e156d569ef2e3
SSDEEP

1536:LdUF8CEWGeTI9jApgc+bMuWGZnJ8p6uovO9bkMx:9WHI9Epgc+bMubJ8QvO9bHx

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

adrianmoritoru-34347.portmap.io:7000

192.168.150.131:7000

Attributes

Install_directory
%Userprofile%
install_file
injector.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2128-1-0x00000000007E0000-0x00000000007F6000-memory.dmp	family_xworm
behavioral2/files/0x000800000001e64d-59.dat	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
4396	powershell.exe
1780	powershell.exe
4104	powershell.exe
2596	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3012	injector.exe
1960	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-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\injector = "C:\\Users\\Admin\\injector.exe"	XClient.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
888	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4396	powershell.exe
4396	powershell.exe
1780	powershell.exe
1780	powershell.exe
4104	powershell.exe
4104	powershell.exe
2596	powershell.exe
2596	powershell.exe
2128	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	XClient.exe
Token: SeDebugPrivilege	4396	powershell.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	4104	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2128	XClient.exe
Token: SeDebugPrivilege	3012	injector.exe
Token: SeDebugPrivilege	1960	injector.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 4396	2128	XClient.exe	91
PID 2128 wrote to memory of 4396	2128	XClient.exe	91
PID 2128 wrote to memory of 1780	2128	XClient.exe	95
PID 2128 wrote to memory of 1780	2128	XClient.exe	95
PID 2128 wrote to memory of 4104	2128	XClient.exe	97
PID 2128 wrote to memory of 4104	2128	XClient.exe	97
PID 2128 wrote to memory of 2596	2128	XClient.exe	99
PID 2128 wrote to memory of 2596	2128	XClient.exe	99
PID 2128 wrote to memory of 888	2128	XClient.exe	101
PID 2128 wrote to memory of 888	2128	XClient.exe	101

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- 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:2128
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4396
- 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:1780
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4104
- 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:2596
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "injector" /tr "C:\Users\Admin\injector.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:888

C:\Users\Admin\injector.exe
C:\Users\Admin\injector.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3012

C:\Users\Admin\injector.exe
C:\Users\Admin\injector.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1960

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\injector.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
a8e8360d573a4ff072dcc6f09d992c88

SHA1
3446774433ceaf0b400073914facab11b98b6807

SHA256
bf5e284e8f95122bf75ead61c7e2b40f55c96742b05330b5b1cb7915991df13b

SHA512
4ee5167643d82082f57c42616007ef9be57f43f9731921bdf7bca611a914724ad94072d3c8f5b130fa54129e5328ccdebf37ba74339c37deb53e79df5cdf0dbe

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
359d1e37a264703c99ebd01eed362de5

SHA1
a1122c8bf9848b3371cd191ba540864204d1d845

SHA256
5781f3046b0d978469415a059cf5ceae0e532869e69ab1dffb8ed878bd299b07

SHA512
ce3caa1d2205be8167b7cd48ebf538a9ce8c148643c26a20377894aa15cf00f90b2b5e2ebf35d40a0273c088abc11fe6f010e34691d7fbc4bef8d7e482f5087d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2dfqix51.nn0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\injector.exe

Filesize
64KB

MD5
1ff6154dbcb71d60e924548345b984da

SHA1
075b5dbfbe99a2bc6e01db6c831a06878ff5cfbe

SHA256
a973208f7dff8f3ef5777da04f73415801f2f2ded3ea44077ca9a695a7965d66

SHA512
7bee117cdec90e0a1a7efa62679423d70b585e8d5de6f54a44241e4a44bca789d2c3eeebe85112bf88688e40abd3511308d0c2c6d3c42f69575e156d569ef2e3

Download Submit
memory/2128-56-0x00007FFB393A3000-0x00007FFB393A5000-memory.dmp

Filesize
8KB

Download
memory/2128-55-0x00007FFB393A0000-0x00007FFB39E61000-memory.dmp

Filesize
10.8MB

Download
memory/2128-0-0x00007FFB393A3000-0x00007FFB393A5000-memory.dmp

Filesize
8KB

Download
memory/2128-57-0x00007FFB393A0000-0x00007FFB39E61000-memory.dmp

Filesize
10.8MB

Download
memory/2128-1-0x00000000007E0000-0x00000000007F6000-memory.dmp

Filesize
88KB

Download
memory/4396-16-0x00007FFB393A0000-0x00007FFB39E61000-memory.dmp

Filesize
10.8MB

Download
memory/4396-13-0x00007FFB393A0000-0x00007FFB39E61000-memory.dmp

Filesize
10.8MB

Download
memory/4396-12-0x00007FFB393A0000-0x00007FFB39E61000-memory.dmp

Filesize
10.8MB

Download
memory/4396-7-0x000002141D670000-0x000002141D692000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads