xworm | bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b

General

Target

XClient.exe
Size

82KB
MD5

e3a406131824aa10710a92340dfb15d6
SHA1

1628ebcfc506987fb6a0345982203a996a2313bd
SHA256

bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b
SHA512

d982a32441f0596201c127f3d14839ba8e2cf5cd5a7dbed9d2f598dacc132a6a78ec78cd37f2b0772af61b08f89ffd38946babb4095413e4166776dd6fb6c689
SSDEEP

1536:8Kw5IeMK0SJEpZcIpZ+Zdd49bdm3UykGmF6LzHVgUeuOoJWRPvx5wzn+5:wFQSJwtO29bdmrJheuOooRPvUL+5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

blood-pattern.gl.at.ply.gg:5353

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/1100-1-0x0000000000490000-0x00000000004AA000-memory.dmp	family_xworm
behavioral2/files/0x0007000000023caf-58.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
3760	powershell.exe
3252	powershell.exe
3464	powershell.exe
2032	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-1-5-21-3756129449-3121373848-4276368241-1000\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 2 IoCs

pid	Process
3324	security
4344	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-1-5-21-3756129449-3121373848-4276368241-1000\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
5084	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1100	XClient.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3760	powershell.exe
3760	powershell.exe
3252	powershell.exe
3252	powershell.exe
3464	powershell.exe
3464	powershell.exe
2032	powershell.exe
2032	powershell.exe
1100	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	XClient.exe
Token: SeDebugPrivilege	3760	powershell.exe
Token: SeDebugPrivilege	3252	powershell.exe
Token: SeDebugPrivilege	3464	powershell.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	1100	XClient.exe
Token: SeDebugPrivilege	3324	security
Token: SeDebugPrivilege	4344	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1100	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 3760	1100	XClient.exe	82
PID 1100 wrote to memory of 3760	1100	XClient.exe	82
PID 1100 wrote to memory of 3252	1100	XClient.exe	84
PID 1100 wrote to memory of 3252	1100	XClient.exe	84
PID 1100 wrote to memory of 3464	1100	XClient.exe	86
PID 1100 wrote to memory of 3464	1100	XClient.exe	86
PID 1100 wrote to memory of 2032	1100	XClient.exe	88
PID 1100 wrote to memory of 2032	1100	XClient.exe	88
PID 1100 wrote to memory of 5084	1100	XClient.exe	90
PID 1100 wrote to memory of 5084	1100	XClient.exe	90

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:1100
- 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:3760
- 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:3252
- 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:3464
- 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:2032
- 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:5084

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3324

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4344

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
59d97011e091004eaffb9816aa0b9abd

SHA1
1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

SHA256
18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

SHA512
d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

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

Filesize
944B

MD5
75d224e238a397659d8e5cf458a41143

SHA1
d182d16283d3d864a2e328b677551428c29ad6df

SHA256
6a98fa5e6c5b77722f2bd8c855fd14d6bf545fc35b292252d1dc136b89ed2fee

SHA512
3477f3b4182ffdccc817de4242c8fcba706c193a0de5170cd023f8df3d330487d7e372556524b5a0fe1df56de40923700f3f8368eadf6601970e347cbcf078cc

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

Filesize
944B

MD5
076fd9da7b675f9895b81cc789398f80

SHA1
7fba0da4097db4901a92a60454019e9eb913c077

SHA256
cf5cc94bca23ba9289523fc7a9172cb8547358110e8e60b9b6e7d1719fb237f6

SHA512
d228907f71da1b856b525058b56ef53bbe8b055e77803c010f26124449c92b0a90c1e57e3ad45024295a6d522f8007877117d449e3b413e9ed153c9e5362b780

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ylfvf51q.rvr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
82KB

MD5
e3a406131824aa10710a92340dfb15d6

SHA1
1628ebcfc506987fb6a0345982203a996a2313bd

SHA256
bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b

SHA512
d982a32441f0596201c127f3d14839ba8e2cf5cd5a7dbed9d2f598dacc132a6a78ec78cd37f2b0772af61b08f89ffd38946babb4095413e4166776dd6fb6c689

Download Submit
memory/1100-55-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/1100-0-0x00007FFBF6CA3000-0x00007FFBF6CA5000-memory.dmp

Filesize
8KB

Download
memory/1100-56-0x00007FFBF6CA3000-0x00007FFBF6CA5000-memory.dmp

Filesize
8KB

Download
memory/1100-57-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/1100-1-0x0000000000490000-0x00000000004AA000-memory.dmp

Filesize
104KB

Download
memory/3760-17-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/3760-14-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/3760-13-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/3760-12-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

Filesize
10.8MB

Download
memory/3760-2-0x00000211098A0000-0x00000211098C2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads