xworm | fb1129f10e3378b7a24603728a3242db30b43ce7fb818803de66e26a8048518a

General

Target

uihelper.exe
Size

71KB
MD5

dffb74f4ddf0aa77581c3115bccffe96
SHA1

f80ccede44a4f6298ed9cbbbe5173ec177653984
SHA256

fb1129f10e3378b7a24603728a3242db30b43ce7fb818803de66e26a8048518a
SHA512

16fcec0f7c2fdcb8f81f6863ba327dffe4818e5e3a09f84008617ba5ab70d4112b80d82282bf0644b223cd2dbc0a7335a53c4794447c20c2664bb2681d7e9668
SSDEEP

1536:aL7csa/kywL0cbUr5U68wZPiJqbqvHZARS3eOQ6h5mdOyXx8Nc:Q7HaMywAN5U6BPiAbqvakeMmdOGxmc

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

final-consequently.gl.at.ply.gg:10334

Attributes

Install_directory
%AppData%
install_file
COM Surrogate.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2116-1-0x0000000000320000-0x0000000000338000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
2828	powershell.exe
2824	powershell.exe
2536	powershell.exe
1200	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surrogate.lnk	uihelper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surrogate.lnk	uihelper.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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\COM Surrogate = "C:\\Users\\Admin\\AppData\\Roaming\\COM Surrogate.exe"	uihelper.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

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2824	powershell.exe
2536	powershell.exe
1200	powershell.exe
2828	powershell.exe
2116	uihelper.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	uihelper.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2536	powershell.exe
Token: SeDebugPrivilege	1200	powershell.exe
Token: SeDebugPrivilege	2828	powershell.exe
Token: SeDebugPrivilege	2116	uihelper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2116	uihelper.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2824	2116	uihelper.exe	29
PID 2116 wrote to memory of 2824	2116	uihelper.exe	29
PID 2116 wrote to memory of 2824	2116	uihelper.exe	29
PID 2116 wrote to memory of 2536	2116	uihelper.exe	31
PID 2116 wrote to memory of 2536	2116	uihelper.exe	31
PID 2116 wrote to memory of 2536	2116	uihelper.exe	31
PID 2116 wrote to memory of 1200	2116	uihelper.exe	33
PID 2116 wrote to memory of 1200	2116	uihelper.exe	33
PID 2116 wrote to memory of 1200	2116	uihelper.exe	33
PID 2116 wrote to memory of 2828	2116	uihelper.exe	35
PID 2116 wrote to memory of 2828	2116	uihelper.exe	35
PID 2116 wrote to memory of 2828	2116	uihelper.exe	35

C:\Users\Admin\AppData\Local\Temp\uihelper.exe
"C:\Users\Admin\AppData\Local\Temp\uihelper.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:2116
- 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\uihelper.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'uihelper.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2536
- 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\COM Surrogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1200
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'COM Surrogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2828

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
f70cb662e1e0db651193131b0c02d444

SHA1
bdfaa7c8377314f970deb499e0790e918b8ec0ba

SHA256
ffe804935eb17dd570e01ac94ab251ed77da434a921fae44fe85cfbad0a362e9

SHA512
ecfd0a2c47ccc829562fd83e363ed14e7c0fcf41c4bb7c2992ec08d74bc9aee68cfb3e7cd296be4138a6803af6d4653594ae60b510a18e1b64f780ef1fb85f4a

Download Submit
memory/2116-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2116-1-0x0000000000320000-0x0000000000338000-memory.dmp

Filesize
96KB

Download
memory/2116-2-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2116-7-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2116-33-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2536-17-0x00000000027D0000-0x00000000027D8000-memory.dmp

Filesize
32KB

Download
memory/2536-16-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2824-8-0x00000000029D0000-0x0000000002A50000-memory.dmp

Filesize
512KB

Download
memory/2824-9-0x000000001B470000-0x000000001B752000-memory.dmp

Filesize
2.9MB

Download
memory/2824-10-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads