xworm | e55752ce0e4bdc9426430bf580efd1559864d24c3c0f118d58ff513e6d618fd1

Analysis

max time kernel
31s
max time network
89s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
07/07/2024, 03:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

bin/release/release.exe
Size

64KB
MD5

36969de6b4bf8de24684de1bb71f624f
SHA1

0327d7d9d7f739e4b09bab680249ed997a281c9b
SHA256

57035572212814c4666994f1a0d2b6955b0951a8f1e9e1686dead895de5f64cf
SHA512

cd8eae1b19c8ae9a2d22b999e85e86625a1e74630e6f3155ff63965b8f116e62f79dcc23b88c92f51fa42ee26f7bd87cad22a21f32f16306890576e309dfe548
SSDEEP

1536:TTodvW06WoBsscJSbigiYUVkaNW6PmqCO26erLq:UenWissBbigHmkaRmHO26erLq

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

79.110.49.233:4444

Attributes

Install_directory
%AppData%
install_file
VSREDIST.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral7/memory/2152-1-0x00000000008F0000-0x0000000000906000-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
2860	powershell.exe
1240	powershell.exe
2120	powershell.exe
2748	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VSREDIST.lnk	release.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VSREDIST.lnk	release.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\VSREDIST = "C:\\Users\\Admin\\AppData\\Roaming\\VSREDIST.exe"	release.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
2	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 4 IoCs

pid	Process
1240	powershell.exe
2120	powershell.exe
2748	powershell.exe
2860	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2152	release.exe
Token: SeDebugPrivilege	1240	powershell.exe
Token: SeDebugPrivilege	2120	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2152	release.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 1240	2152	release.exe	30
PID 2152 wrote to memory of 1240	2152	release.exe	30
PID 2152 wrote to memory of 1240	2152	release.exe	30
PID 2152 wrote to memory of 2120	2152	release.exe	32
PID 2152 wrote to memory of 2120	2152	release.exe	32
PID 2152 wrote to memory of 2120	2152	release.exe	32
PID 2152 wrote to memory of 2748	2152	release.exe	34
PID 2152 wrote to memory of 2748	2152	release.exe	34
PID 2152 wrote to memory of 2748	2152	release.exe	34
PID 2152 wrote to memory of 2860	2152	release.exe	36
PID 2152 wrote to memory of 2860	2152	release.exe	36
PID 2152 wrote to memory of 2860	2152	release.exe	36

C:\Users\Admin\AppData\Local\Temp\bin\release\release.exe
"C:\Users\Admin\AppData\Local\Temp\bin\release\release.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2152
- 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\bin\release\release.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1240
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'release.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2120
- 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\VSREDIST.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VSREDIST.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

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
4bb8e6a9041a5a35707b32195c935003

SHA1
55fb4bee4193015810010a3e7e4693b86262c10b

SHA256
743a5ee714e67b479384e90a84e797f398e7c3c0047661e71f54fea3b17e801e

SHA512
aa47bdc47ff38afca940e633b3d15286a78753f5d18bb928c48622eb31482d880a1f9c53ef1b1091b0a53a751e9632ddcc63b842e1475b703884be6ceafd9fbe

Download Submit
memory/1240-7-0x000000001B1E0000-0x000000001B4C2000-memory.dmp

Filesize
2.9MB

Download
memory/1240-8-0x0000000002490000-0x0000000002498000-memory.dmp

Filesize
32KB

Download
memory/2120-14-0x000000001B270000-0x000000001B552000-memory.dmp

Filesize
2.9MB

Download
memory/2120-15-0x00000000024E0000-0x00000000024E8000-memory.dmp

Filesize
32KB

Download
memory/2152-0-0x000007FEF4F23000-0x000007FEF4F24000-memory.dmp

Filesize
4KB

Download
memory/2152-1-0x00000000008F0000-0x0000000000906000-memory.dmp

Filesize
88KB

Download
memory/2152-2-0x000007FEF4F20000-0x000007FEF590C000-memory.dmp

Filesize
9.9MB

Download
memory/2152-30-0x000007FEF4F23000-0x000007FEF4F24000-memory.dmp

Filesize
4KB

Download
memory/2152-31-0x000007FEF4F20000-0x000007FEF590C000-memory.dmp

Filesize
9.9MB

Download