xworm | a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49

General

Target

XClient.exe
Size

71KB
MD5

e45a311b01b3e3174b188ed4d73e6e82
SHA1

7ca5b64e103bbe078d7ba94481f0b042c37ac48e
SHA256

a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49
SHA512

a64ec9ef713083a88e77a7c6c7dceb0e6f9393a5ce07ca2772b27dccbe4aeb0941e3b61b47f1216527fb795aeed79d8a392b7bce49ca4cee90f937731996ba08
SSDEEP

1536:ZgpiJEUAxRRA8bNxWlOjgjm0XtKLZ9bxeIBeJDPaz6ecOx2A0xsAn+K:Z9WUYRRVNjYQd9bxbMJrqcOx2A0d+K

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

around-four.gl.at.ply.gg:21052

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot7704029346:AAHPre1lXQa0UfPCpOUXJZ9UXA9mFxvH4Gk/sendMessage?chat_id=7590668020

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2120-1-0x00000000001E0000-0x00000000001F8000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023c1c-57.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
4152	powershell.exe
4812	powershell.exe
2712	powershell.exe
1236	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-1-5-21-1170604239-850860757-3112005715-1000\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\security.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\security.lnk	XClient.exe

Executes dropped EXE 3 IoCs

pid	Process
4924	security
2384	security
4944	security

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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\security = "C:\\Users\\Admin\\AppData\\Roaming\\security"	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
3652	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2120	XClient.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4812	powershell.exe
4812	powershell.exe
2712	powershell.exe
2712	powershell.exe
1236	powershell.exe
1236	powershell.exe
4152	powershell.exe
4152	powershell.exe
2120	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2120	XClient.exe
Token: SeDebugPrivilege	4812	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeDebugPrivilege	4152	powershell.exe
Token: SeDebugPrivilege	2120	XClient.exe
Token: SeDebugPrivilege	4924	security
Token: SeDebugPrivilege	2384	security
Token: SeDebugPrivilege	4944	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2120	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 4812	2120	XClient.exe	91
PID 2120 wrote to memory of 4812	2120	XClient.exe	91
PID 2120 wrote to memory of 2712	2120	XClient.exe	93
PID 2120 wrote to memory of 2712	2120	XClient.exe	93
PID 2120 wrote to memory of 1236	2120	XClient.exe	97
PID 2120 wrote to memory of 1236	2120	XClient.exe	97
PID 2120 wrote to memory of 4152	2120	XClient.exe	99
PID 2120 wrote to memory of 4152	2120	XClient.exe	99
PID 2120 wrote to memory of 3652	2120	XClient.exe	102
PID 2120 wrote to memory of 3652	2120	XClient.exe	102

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: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2120
- 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:4812
- 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:2712
- 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\security'
  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 'security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4152
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "security" /tr "C:\Users\Admin\AppData\Roaming\security"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3652

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4924

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2384

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4944

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\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
4ff4fd481c9b346992fcbb86e534c039

SHA1
784344362009eb6029a7e58792e757f82e6e1564

SHA256
b9102c8b1e1b4ef3e0b2c7d81fdc330476d5805dd6fdc00924ef0ceebaa7d0de

SHA512
708e2f7a3b505269f4da6e45b7704779439f4a7b21abfce374c41b513907566940c9ca174b175465e678b841509ae00dedc6e8ce8dc7c9613becc6f214bec668

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

Filesize
944B

MD5
f8520bc03ff31abc84853557673f1ff7

SHA1
691078a4b0dc86912b75f7d5588b3f0410e037a5

SHA256
0b677bf370f6e05bef5396ccfba95ae0b2e731e796db11f83687956615830d1c

SHA512
9fd973155b7a08c77ffa77f20cd34574936a5b272e7d31e4bf4f42a4402bda016e4b45bf32f987186e9490427a11d72681aad391bbf84a360803e6ddfd895d0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p3qsit5x.zax.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\security

Filesize
71KB

MD5
e45a311b01b3e3174b188ed4d73e6e82

SHA1
7ca5b64e103bbe078d7ba94481f0b042c37ac48e

SHA256
a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49

SHA512
a64ec9ef713083a88e77a7c6c7dceb0e6f9393a5ce07ca2772b27dccbe4aeb0941e3b61b47f1216527fb795aeed79d8a392b7bce49ca4cee90f937731996ba08

Download Submit
memory/2120-55-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/2120-0-0x00007FFC431D3000-0x00007FFC431D5000-memory.dmp

Filesize
8KB

Download
memory/2120-56-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/2120-1-0x00000000001E0000-0x00000000001F8000-memory.dmp

Filesize
96KB

Download
memory/4812-17-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/4812-14-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/4812-13-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/4812-12-0x00007FFC431D0000-0x00007FFC43C91000-memory.dmp

Filesize
10.8MB

Download
memory/4812-2-0x0000027D45B50000-0x0000027D45B72000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads