xworm | 30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c

General

Target

Semo.exe
Size

168KB
MD5

651429675c1d86cf068746159aa66b6d
SHA1

aad51d3448cb1e9f337a985ed840a0064d5699ee
SHA256

30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c
SHA512

397e2a05e8f3d45c04953998a09d76212b38e3dc9073be814cb3010ea94b00733d2557a6e5002b0a2401fb33d62908e794553a6afd31e45b0afe6987806272fb
SSDEEP

3072:gwe+6Rkd+MisaP1JmK6Hw9hEgXEp1NDLfgAiKgD7fYtB2SOEQW40/mmo0ioi:glbRFLsaPfmK6HwXDXsFglf7gya4tm

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

activities-mustang.gl.at.ply.gg:54756

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016cf6-5.dat	family_xworm
behavioral1/memory/2380-9-0x0000000001270000-0x0000000001286000-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
2656	powershell.exe
2776	powershell.exe
2852	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2380	X.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\X = "C:\\Users\\Admin\\AppData\\Roaming\\X.exe"	X.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2776	powershell.exe
2852	powershell.exe
2656	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	X.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeDebugPrivilege	2380	X.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2380	2168	Semo.exe	30
PID 2168 wrote to memory of 2380	2168	Semo.exe	30
PID 2168 wrote to memory of 2380	2168	Semo.exe	30
PID 2380 wrote to memory of 2776	2380	X.exe	31
PID 2380 wrote to memory of 2776	2380	X.exe	31
PID 2380 wrote to memory of 2776	2380	X.exe	31
PID 2380 wrote to memory of 2852	2380	X.exe	33
PID 2380 wrote to memory of 2852	2380	X.exe	33
PID 2380 wrote to memory of 2852	2380	X.exe	33
PID 2380 wrote to memory of 2656	2380	X.exe	36
PID 2380 wrote to memory of 2656	2380	X.exe	36
PID 2380 wrote to memory of 2656	2380	X.exe	36

C:\Users\Admin\AppData\Local\Temp\Semo.exe
"C:\Users\Admin\AppData\Local\Temp\Semo.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Users\Admin\AppData\Local\Temp\X.exe
  "C:\Users\Admin\AppData\Local\Temp\X.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2380
- - 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\X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2776
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2852
- - 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\X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2656

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\Local\Temp\X.exe

Filesize
61KB

MD5
2c76b88a912c741f1404b400c1add578

SHA1
13d1b6d341d59aef6833a4123e22484ddb665183

SHA256
5178365164f71d22459d807a5ba61e8d50dd15a4adb4a00b08248c6f141f8074

SHA512
b8f8ae619f7cdf323c4f98e63bea5c3059886792b0c5a41df96a243811bf78df2fec45bf4b459e07c8c564ee2875852ac47eb3c3ad34cf70c8ba27c547163ebe

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

Filesize
7KB

MD5
e95a6e46a66f5718e8ec7241ce125c02

SHA1
c1eb5df43a94c55123261e8cafd8b8243a64d8a1

SHA256
8175a0065956fe17a23efe4ec599a36b13fc65493e8f3f3b0aae2eb87e3949bf

SHA512
02d4ccaad496ce8d76d3839c7a3fc28774a47c2ac9d4b49081ee25f29c0389218a1bcbe93cfaea8090b7a4e869afd1f59818e4aa63b01d198d2bc14aac079cc3

Download Submit
memory/2168-1-0x00000000009F0000-0x0000000000A20000-memory.dmp

Filesize
192KB

Download
memory/2168-10-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2168-0-0x000007FEF6523000-0x000007FEF6524000-memory.dmp

Filesize
4KB

Download
memory/2380-9-0x0000000001270000-0x0000000001286000-memory.dmp

Filesize
88KB

Download
memory/2380-11-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2380-39-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2380-38-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2380-37-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2776-16-0x000000001B7C0000-0x000000001BAA2000-memory.dmp

Filesize
2.9MB

Download
memory/2776-17-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2852-24-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2852-23-0x000000001B710000-0x000000001B9F2000-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