xworm | 3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7

General

Target

3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe
Size

237KB
MD5

ac4ef9a196e1fcbf046a1f357d1240a2
SHA1

ab74bd5ef75aea3153da22dda211e08eb0a30c8b
SHA256

3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7
SHA512

5c79ed5aad2ca76b1faab75f125d79b46db73ae78b76951d5edd199e3e1d874cdcc1e79e7f70aff362e6cea0b4561a9998daf8db7acb0ec921148a7790747369
SSDEEP

3072:Uy+Geu6jTFr99QO/s3zLLAsNeDF5nI0PGIj9lua/Obw0hFv2PCWpIdk:UvPr9uzL0sNOBTunbw0/5Wp

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

enter-sierra.gl.at.ply.gg:55389

Mutex

lzS6Ul7Mo5UcN6CR

Attributes

Install_directory
%AppData%
install_file
Wave.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/3048-1-0x0000000000D80000-0x0000000000DC2000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012117-37.dat	family_xworm
behavioral1/memory/1040-38-0x00000000011B0000-0x00000000011F2000-memory.dmp	family_xworm
behavioral1/memory/1616-41-0x0000000000190000-0x00000000001D2000-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
2740	powershell.exe
2760	powershell.exe
2608	powershell.exe
1308	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Wave.lnk	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Wave.lnk	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe

Executes dropped EXE 2 IoCs

pid	Process
1040	Wave.exe
1616	Wave.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wave = "C:\\Users\\Admin\\AppData\\Roaming\\Wave.exe"	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.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
2800	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2740	powershell.exe
2760	powershell.exe
2608	powershell.exe
1308	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	1308	powershell.exe
Token: SeDebugPrivilege	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe
Token: SeDebugPrivilege	1040	Wave.exe
Token: SeDebugPrivilege	1616	Wave.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2740	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	30
PID 3048 wrote to memory of 2740	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	30
PID 3048 wrote to memory of 2740	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	30
PID 3048 wrote to memory of 2760	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	32
PID 3048 wrote to memory of 2760	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	32
PID 3048 wrote to memory of 2760	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	32
PID 3048 wrote to memory of 2608	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	34
PID 3048 wrote to memory of 2608	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	34
PID 3048 wrote to memory of 2608	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	34
PID 3048 wrote to memory of 1308	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	36
PID 3048 wrote to memory of 1308	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	36
PID 3048 wrote to memory of 1308	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	36
PID 3048 wrote to memory of 2800	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	38
PID 3048 wrote to memory of 2800	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	38
PID 3048 wrote to memory of 2800	3048	3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe	38
PID 324 wrote to memory of 1040	324	taskeng.exe	41
PID 324 wrote to memory of 1040	324	taskeng.exe	41
PID 324 wrote to memory of 1040	324	taskeng.exe	41
PID 324 wrote to memory of 1616	324	taskeng.exe	43
PID 324 wrote to memory of 1616	324	taskeng.exe	43
PID 324 wrote to memory of 1616	324	taskeng.exe	43

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\3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe
"C:\Users\Admin\AppData\Local\Temp\3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- 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\3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- 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\Wave.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Wave.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1308
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Wave" /tr "C:\Users\Admin\AppData\Roaming\Wave.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2800

C:\Windows\system32\taskeng.exe
taskeng.exe {DFC32CC4-3C95-4D66-B283-6ACD80FCA967} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:324
- C:\Users\Admin\AppData\Roaming\Wave.exe
  C:\Users\Admin\AppData\Roaming\Wave.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1040
- C:\Users\Admin\AppData\Roaming\Wave.exe
  C:\Users\Admin\AppData\Roaming\Wave.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1616

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
6df449cff443c671a7d70de3d8ecaf49

SHA1
c091c225b2810af561058dd8a7e62d01d037be8e

SHA256
7bb3b96fe92cce95b47bd3ca04cd8613a06185ef61d4f57f47afd102e8d99d67

SHA512
747ae2b635f7ae78991d7b08dbc75e5b47d077f029f6986a0ecb9141fb4af03e4c035b9b825ae7d132c2127418d6003293a6b30963dce48e93c9f578da902c42

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

Filesize
237KB

MD5
ac4ef9a196e1fcbf046a1f357d1240a2

SHA1
ab74bd5ef75aea3153da22dda211e08eb0a30c8b

SHA256
3f3d33237e56d547df335c22816af3cde586a66e234e2ea6ea9ab5f90cb4b0a7

SHA512
5c79ed5aad2ca76b1faab75f125d79b46db73ae78b76951d5edd199e3e1d874cdcc1e79e7f70aff362e6cea0b4561a9998daf8db7acb0ec921148a7790747369

Download Submit
memory/1040-38-0x00000000011B0000-0x00000000011F2000-memory.dmp

Filesize
264KB

Download
memory/1616-41-0x0000000000190000-0x00000000001D2000-memory.dmp

Filesize
264KB

Download
memory/2740-6-0x0000000002990000-0x0000000002A10000-memory.dmp

Filesize
512KB

Download
memory/2740-7-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2740-8-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/2760-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2760-15-0x0000000001C80000-0x0000000001C88000-memory.dmp

Filesize
32KB

Download
memory/3048-33-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/3048-32-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/3048-34-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/3048-0-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/3048-1-0x0000000000D80000-0x0000000000DC2000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads