xworm | 7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9

General

Target

7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe
Size

204KB
MD5

9a545de2e6d6eb28f621076f61cb736d
SHA1

4b30a9201165f5bd92df7aa14ffa412e0ea41db3
SHA256

7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9
SHA512

9d54968fe188d535d48eff934d362065e2e237609376230b7b7edb4cd047a76f1a7e8cb06f52ae11e347469bc60c167957db8ce49cd2daf1b39909955fd67a76
SSDEEP

1536:zt/CeA4flKCD6a1tc533JtH82fkbLDg777Kkhj+6GM9DxAbOcvnKSEQHMnvPNl:B/CeA49b6af1bLDc7ld9DxAbOcvuki

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

Valdemar-27265.portmap.host:27265

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/5116-1-0x0000000000FD0000-0x0000000001008000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023410-59.dat	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
4648	powershell.exe
3648	powershell.exe
3876	powershell.exe
4788	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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Executes dropped EXE 2 IoCs

pid	Process
2188	XClient.exe
3352	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-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ip-api.com

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
3200	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3876	powershell.exe
3876	powershell.exe
4788	powershell.exe
4788	powershell.exe
4648	powershell.exe
4648	powershell.exe
3648	powershell.exe
3648	powershell.exe
5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe
Token: SeDebugPrivilege	3876	powershell.exe
Token: SeDebugPrivilege	4788	powershell.exe
Token: SeDebugPrivilege	4648	powershell.exe
Token: SeDebugPrivilege	3648	powershell.exe
Token: SeDebugPrivilege	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe
Token: SeDebugPrivilege	2188	XClient.exe
Token: SeDebugPrivilege	3352	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 3876	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	87
PID 5116 wrote to memory of 3876	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	87
PID 5116 wrote to memory of 4788	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	89
PID 5116 wrote to memory of 4788	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	89
PID 5116 wrote to memory of 4648	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	91
PID 5116 wrote to memory of 4648	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	91
PID 5116 wrote to memory of 3648	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	93
PID 5116 wrote to memory of 3648	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	93
PID 5116 wrote to memory of 3200	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	95
PID 5116 wrote to memory of 3200	5116	7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe	95

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\7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe
"C:\Users\Admin\AppData\Local\Temp\7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe"
1⤵
- Checks computer location settings
- Drops startup file
- 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:5116
- 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\7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3876
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4788
- 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:4648
- 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:3648
- 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:3200

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2188

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3352

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\XClient.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
e243a38635ff9a06c87c2a61a2200656

SHA1
ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

SHA256
af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

SHA512
4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i1ugqxlk.yuo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
204KB

MD5
9a545de2e6d6eb28f621076f61cb736d

SHA1
4b30a9201165f5bd92df7aa14ffa412e0ea41db3

SHA256
7d2236f48352a9eac140f0de55cb53b0c57b3b14135dab889b5fcd1b5a575fd9

SHA512
9d54968fe188d535d48eff934d362065e2e237609376230b7b7edb4cd047a76f1a7e8cb06f52ae11e347469bc60c167957db8ce49cd2daf1b39909955fd67a76

Download Submit
memory/3876-18-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-15-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-14-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-13-0x000002463FB30000-0x000002463FB52000-memory.dmp

Filesize
136KB

Download
memory/3876-3-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-0-0x00007FFF2ADF3000-0x00007FFF2ADF5000-memory.dmp

Filesize
8KB

Download
memory/5116-57-0x00007FFF2ADF3000-0x00007FFF2ADF5000-memory.dmp

Filesize
8KB

Download
memory/5116-58-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-2-0x00007FFF2ADF0000-0x00007FFF2B8B1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-1-0x0000000000FD0000-0x0000000001008000-memory.dmp

Filesize
224KB

Download
memory/5116-65-0x000000001BB80000-0x000000001BB8C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads