xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

General

Target

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/848-1-0x0000000000AA0000-0x0000000000AC8000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120fe-36.dat	family_xworm
behavioral1/memory/1952-38-0x0000000001180000-0x00000000011A8000-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
2456	powershell.exe
2932	powershell.exe
1960	powershell.exe
2656	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Executes dropped EXE 2 IoCs

pid	Process
1952	Update.exe
2100	Update.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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
2796	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2456	powershell.exe
2932	powershell.exe
1960	powershell.exe
2656	powershell.exe
848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	2456	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	1960	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeDebugPrivilege	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	1952	Update.exe
Token: SeDebugPrivilege	2100	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2456	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	28
PID 848 wrote to memory of 2456	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	28
PID 848 wrote to memory of 2456	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	28
PID 848 wrote to memory of 2932	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	30
PID 848 wrote to memory of 2932	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	30
PID 848 wrote to memory of 2932	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	30
PID 848 wrote to memory of 1960	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	32
PID 848 wrote to memory of 1960	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	32
PID 848 wrote to memory of 1960	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	32
PID 848 wrote to memory of 2656	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	34
PID 848 wrote to memory of 2656	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	34
PID 848 wrote to memory of 2656	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	34
PID 848 wrote to memory of 2796	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	36
PID 848 wrote to memory of 2796	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	36
PID 848 wrote to memory of 2796	848	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	36
PID 1776 wrote to memory of 1952	1776	taskeng.exe	40
PID 1776 wrote to memory of 1952	1776	taskeng.exe	40
PID 1776 wrote to memory of 1952	1776	taskeng.exe	40
PID 1776 wrote to memory of 2100	1776	taskeng.exe	41
PID 1776 wrote to memory of 2100	1776	taskeng.exe	41
PID 1776 wrote to memory of 2100	1776	taskeng.exe	41

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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
"C:\Users\Admin\AppData\Local\Temp\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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:848
- 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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1960
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2656
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2796

C:\Windows\system32\taskeng.exe
taskeng.exe {77DB2FC0-7BE7-48BB-AA59-67C9BF37AFAF} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1952
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2100

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
01e6b6d78d0b08415f9684a2e3e451b0

SHA1
c8d463df2eb7f1b5d072e0bb6340ef47af7b4021

SHA256
feb987f57203f552bb9a50918bb2937aa7a52fd84eb57fd3e7e5cd85d4b2f43f

SHA512
517db4ee119d3efc3bcde73393f73fb907da979e467d8128314a60902a14ad1cd3a6003072a6c9d1e6d1d9e069a7732989fa2983b5f5736e3629efbbcfd0928c

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

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/848-32-0x0000000001FE0000-0x0000000002060000-memory.dmp

Filesize
512KB

Download
memory/848-1-0x0000000000AA0000-0x0000000000AC8000-memory.dmp

Filesize
160KB

Download
memory/848-0-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/848-34-0x0000000001FE0000-0x0000000002060000-memory.dmp

Filesize
512KB

Download
memory/848-33-0x000007FEF64A3000-0x000007FEF64A4000-memory.dmp

Filesize
4KB

Download
memory/1952-38-0x0000000001180000-0x00000000011A8000-memory.dmp

Filesize
160KB

Download
memory/2456-8-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2456-7-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2456-6-0x0000000002A00000-0x0000000002A80000-memory.dmp

Filesize
512KB

Download
memory/2932-15-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2932-14-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads