xworm | f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8

General

Target

f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
Size

226KB
MD5

31c81fac210cd56abb84ff55ede0365b
SHA1

ca8a86da38e111f01ad04c9c537162be2af5f842
SHA256

f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8
SHA512

11d21b79a689a3689470e975d25247639c9a0eba266f70c8d5168b94a06975dc98537206cf753f9a436ee679969a9820f6ffa63fb15852ca05cf0fdf8fdf6eba
SSDEEP

1536:vTtytp4hGT9/gEb8ATRf6VOSQmYqm3uzh+sh8tMI5loD+bhN/N5:vYQcKEb8bOSY3uz0sh8J5loDo/z

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

172.86.108.55:7771

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2600-1-0x00000000008C0000-0x00000000008FE000-memory.dmp	family_xworm
behavioral1/files/0x000b000000003683-29.dat	family_xworm
behavioral1/memory/1996-34-0x00000000013E0000-0x000000000141E000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3032	powershell.exe
2704	powershell.exe
2712	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\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.lnk	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.lnk	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Executes dropped EXE 2 IoCs

pid	Process
1996	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
2408	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.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\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8 = "C:\\Users\\Admin\\AppData\\Roaming\\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe"	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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
2064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3032	powershell.exe
2704	powershell.exe
2712	powershell.exe
2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
Token: SeDebugPrivilege	3032	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
Token: SeDebugPrivilege	1996	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
Token: SeDebugPrivilege	2408	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 3032	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	30
PID 2600 wrote to memory of 3032	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	30
PID 2600 wrote to memory of 3032	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	30
PID 2600 wrote to memory of 2704	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	32
PID 2600 wrote to memory of 2704	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	32
PID 2600 wrote to memory of 2704	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	32
PID 2600 wrote to memory of 2712	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	34
PID 2600 wrote to memory of 2712	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	34
PID 2600 wrote to memory of 2712	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	34
PID 2600 wrote to memory of 2064	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	36
PID 2600 wrote to memory of 2064	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	36
PID 2600 wrote to memory of 2064	2600	f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe	36
PID 1228 wrote to memory of 1996	1228	taskeng.exe	39
PID 1228 wrote to memory of 1996	1228	taskeng.exe	39
PID 1228 wrote to memory of 1996	1228	taskeng.exe	39
PID 1228 wrote to memory of 2408	1228	taskeng.exe	40
PID 1228 wrote to memory of 2408	1228	taskeng.exe	40
PID 1228 wrote to memory of 2408	1228	taskeng.exe	40

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\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
"C:\Users\Admin\AppData\Local\Temp\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2600
- 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\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3032
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- 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\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8" /tr "C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2064

C:\Windows\system32\taskeng.exe
taskeng.exe {2B824FA1-8A87-4C20-AFF1-B4D2C342F3C8} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
  C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1996
- C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
  C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2408

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
768216b990b2febf7fc9c6cc43345508

SHA1
9622bd4e954f58c554a0683ef6c5c7152a305afb

SHA256
70e29dc02801e47134938ed046da30354f1160610bff973a99ccd4b4a822c683

SHA512
972ca845bd366fe01330173988177faba7bf4c24d00de00dd11ae02b1cf508b4b11249496a097bb17c2d7b190eb517395f59161c5aabbee7d54232b2c183b549

Download Submit
C:\Users\Admin\AppData\Roaming\f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8.exe

Filesize
226KB

MD5
31c81fac210cd56abb84ff55ede0365b

SHA1
ca8a86da38e111f01ad04c9c537162be2af5f842

SHA256
f26dcdf460a3da96cedebca9baccca6947bea8f89e3a801118b9cd40da14bfa8

SHA512
11d21b79a689a3689470e975d25247639c9a0eba266f70c8d5168b94a06975dc98537206cf753f9a436ee679969a9820f6ffa63fb15852ca05cf0fdf8fdf6eba

Download Submit
memory/1996-34-0x00000000013E0000-0x000000000141E000-memory.dmp

Filesize
248KB

Download
memory/2600-0-0x000007FEF6253000-0x000007FEF6254000-memory.dmp

Filesize
4KB

Download
memory/2600-1-0x00000000008C0000-0x00000000008FE000-memory.dmp

Filesize
248KB

Download
memory/2600-2-0x000007FEF6250000-0x000007FEF6C3C000-memory.dmp

Filesize
9.9MB

Download
memory/2600-9-0x000007FEF6253000-0x000007FEF6254000-memory.dmp

Filesize
4KB

Download
memory/2600-23-0x000007FEF6250000-0x000007FEF6C3C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-15-0x000000001B1B0000-0x000000001B492000-memory.dmp

Filesize
2.9MB

Download
memory/2704-16-0x00000000021C0000-0x00000000021C8000-memory.dmp

Filesize
32KB

Download
memory/3032-7-0x000000001B380000-0x000000001B662000-memory.dmp

Filesize
2.9MB

Download
memory/3032-8-0x0000000002040000-0x0000000002048000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads