xworm | b3e217c467cfe1e8079e82b88f2f99950a9459330a8843070ebb34bf3e2bcf38

General

Target

file.exe
Size

72KB
MD5

8d52069bd117da94e0b0b70e73e33fb0
SHA1

e8090adddff167e1bda4194af968ba4bc22a2d60
SHA256

b3e217c467cfe1e8079e82b88f2f99950a9459330a8843070ebb34bf3e2bcf38
SHA512

7a91eeb0cf3edb53d0ac3d51abe85c97bb09da5b334b387fda90144a2f3729693367c451fee9e04cb953dcf8d9d1b91ee12961bfe9f1e53c0ab06aababd696ed
SSDEEP

1536:8C7dCCRXek2ycziKLGIp78eax9xbMxioyAgDd+E6V186Oc8E2el:p7MKOHXBGVpxbIEAgRA1dOcYel

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

87.120.112.33:8398

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot6673004050:AAEcDfPnnGAswDvyrn9-bkOySVSnbPqLnBU/sendMessage?chat_id=1470436579

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2860-1-0x0000000000C00000-0x0000000000C18000-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
2744	powershell.exe
2808	powershell.exe
2712	powershell.exe
1928	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\svchost.lnk	file.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	file.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.exe"	file.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2860	file.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2744	powershell.exe
2808	powershell.exe
2712	powershell.exe
1928	powershell.exe
2860	file.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	file.exe
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	1928	powershell.exe
Token: SeDebugPrivilege	2860	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	file.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2744	2860	file.exe	30
PID 2860 wrote to memory of 2744	2860	file.exe	30
PID 2860 wrote to memory of 2744	2860	file.exe	30
PID 2860 wrote to memory of 2808	2860	file.exe	32
PID 2860 wrote to memory of 2808	2860	file.exe	32
PID 2860 wrote to memory of 2808	2860	file.exe	32
PID 2860 wrote to memory of 2712	2860	file.exe	34
PID 2860 wrote to memory of 2712	2860	file.exe	34
PID 2860 wrote to memory of 2712	2860	file.exe	34
PID 2860 wrote to memory of 1928	2860	file.exe	36
PID 2860 wrote to memory of 1928	2860	file.exe	36
PID 2860 wrote to memory of 1928	2860	file.exe	36

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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:2860
- 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\file.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2744
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'file.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2808
- 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\svchost.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 -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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
c0e66eb7de0d457fd295fe5301b3be69

SHA1
61692eb294b39c58700fb6bc6a66d6308594ccab

SHA256
cb1950d42bb5888add5190d4813e40fdb8f1636571a8d0b4d0b02f6884486202

SHA512
648f0884461fde91e0e5527894f831277740036535dacf6e0682fc2e59390c50630f10eaa1640fe2562e779cbc46b426990911dcd41e251ab69af645bada9621

Download Submit
memory/2744-6-0x0000000002490000-0x0000000002510000-memory.dmp

Filesize
512KB

Download
memory/2744-7-0x000000001B170000-0x000000001B452000-memory.dmp

Filesize
2.9MB

Download
memory/2744-8-0x0000000002560000-0x0000000002568000-memory.dmp

Filesize
32KB

Download
memory/2808-14-0x000000001B3E0000-0x000000001B6C2000-memory.dmp

Filesize
2.9MB

Download
memory/2808-15-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

Filesize
32KB

Download
memory/2860-0-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/2860-1-0x0000000000C00000-0x0000000000C18000-memory.dmp

Filesize
96KB

Download
memory/2860-27-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/2860-33-0x0000000002170000-0x00000000021F0000-memory.dmp

Filesize
512KB

Download
memory/2860-34-0x0000000002170000-0x00000000021F0000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads