xworm | 24084c7007398a0bfc75ac07fc9a1b4415622e859be6a3bd0448e9e2f943c956

General

Target

robloxweb_exploit.exe
Size

67KB
MD5

ef8eb728a5ff6ebbda3c928cf567d6fd
SHA1

d9d6d8071087d32ded6a3c80091e0a1c03ee9dd4
SHA256

24084c7007398a0bfc75ac07fc9a1b4415622e859be6a3bd0448e9e2f943c956
SHA512

0feb7bb8d18f095f04c26563d6034286e8669f20de665d79107983c078443fe44a4502c8dabfa391780277f3b88cfd0c8767292796260f7b1dc8d23c321ea8b7
SSDEEP

1536:8siAyjGLJAhPKbSvU71wiDWYLE6IAOgLR:8VAyKzbSvRY5iAOgN

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

writing-cbs.gl.at.ply.gg:29694

Attributes

Install_directory
%ProgramData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1368-1-0x00000000011C0000-0x00000000011D8000-memory.dmp	family_xworm
behavioral1/files/0x000c000000012029-32.dat	family_xworm
behavioral1/memory/2176-34-0x0000000000870000-0x0000000000888000-memory.dmp	family_xworm
behavioral1/memory/620-36-0x0000000000100000-0x0000000000118000-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
2768	powershell.exe
2908	powershell.exe
2852	powershell.exe
2204	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2176	svchost.exe
620	svchost.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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe"	robloxweb_exploit.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
1496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2768	powershell.exe
2908	powershell.exe
2852	powershell.exe
2204	powershell.exe
1368	robloxweb_exploit.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	robloxweb_exploit.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	2204	powershell.exe
Token: SeDebugPrivilege	1368	robloxweb_exploit.exe
Token: SeDebugPrivilege	2176	svchost.exe
Token: SeDebugPrivilege	620	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1368	robloxweb_exploit.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 2768	1368	robloxweb_exploit.exe	31
PID 1368 wrote to memory of 2768	1368	robloxweb_exploit.exe	31
PID 1368 wrote to memory of 2768	1368	robloxweb_exploit.exe	31
PID 1368 wrote to memory of 2908	1368	robloxweb_exploit.exe	33
PID 1368 wrote to memory of 2908	1368	robloxweb_exploit.exe	33
PID 1368 wrote to memory of 2908	1368	robloxweb_exploit.exe	33
PID 1368 wrote to memory of 2852	1368	robloxweb_exploit.exe	35
PID 1368 wrote to memory of 2852	1368	robloxweb_exploit.exe	35
PID 1368 wrote to memory of 2852	1368	robloxweb_exploit.exe	35
PID 1368 wrote to memory of 2204	1368	robloxweb_exploit.exe	37
PID 1368 wrote to memory of 2204	1368	robloxweb_exploit.exe	37
PID 1368 wrote to memory of 2204	1368	robloxweb_exploit.exe	37
PID 1368 wrote to memory of 1496	1368	robloxweb_exploit.exe	39
PID 1368 wrote to memory of 1496	1368	robloxweb_exploit.exe	39
PID 1368 wrote to memory of 1496	1368	robloxweb_exploit.exe	39
PID 1816 wrote to memory of 2176	1816	taskeng.exe	43
PID 1816 wrote to memory of 2176	1816	taskeng.exe	43
PID 1816 wrote to memory of 2176	1816	taskeng.exe	43
PID 1816 wrote to memory of 620	1816	taskeng.exe	44
PID 1816 wrote to memory of 620	1816	taskeng.exe	44
PID 1816 wrote to memory of 620	1816	taskeng.exe	44

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\robloxweb_exploit.exe
"C:\Users\Admin\AppData\Local\Temp\robloxweb_exploit.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1368
- 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\robloxweb_exploit.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'robloxweb_exploit.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
  2⤵
  - 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 -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2204
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1496

C:\Windows\system32\taskeng.exe
taskeng.exe {B1DFD372-7C85-4612-B9B0-B6594175DC8D} S-1-5-21-1385883288-3042840365-2734249351-1000:RPXOCQRF\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1816
- C:\ProgramData\svchost.exe
  C:\ProgramData\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2176
- C:\ProgramData\svchost.exe
  C:\ProgramData\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:620

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:\ProgramData\svchost.exe

Filesize
67KB

MD5
ef8eb728a5ff6ebbda3c928cf567d6fd

SHA1
d9d6d8071087d32ded6a3c80091e0a1c03ee9dd4

SHA256
24084c7007398a0bfc75ac07fc9a1b4415622e859be6a3bd0448e9e2f943c956

SHA512
0feb7bb8d18f095f04c26563d6034286e8669f20de665d79107983c078443fe44a4502c8dabfa391780277f3b88cfd0c8767292796260f7b1dc8d23c321ea8b7

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

Filesize
7KB

MD5
4525aa439fc9bc9b12b88ca32a9eec9e

SHA1
6c17d7eb64be877a88f3a47e883c91a02bcdfb05

SHA256
a67d954247fed802201c448f3ea5ca73d8e3023508d4008efb501a6ea2d2a915

SHA512
a0b17872fae4fa7f97e7170317435bd6aced7c4e1c67f6143906d4fc428ab628399dd53f22e63769afd386369a9024d5d3ac3c73768dad245461fce8be33a288

Download Submit
memory/620-36-0x0000000000100000-0x0000000000118000-memory.dmp

Filesize
96KB

Download
memory/1368-2-0x000007FEF5A00000-0x000007FEF63EC000-memory.dmp

Filesize
9.9MB

Download
memory/1368-0-0x000007FEF5A03000-0x000007FEF5A04000-memory.dmp

Filesize
4KB

Download
memory/1368-29-0x000007FEF5A03000-0x000007FEF5A04000-memory.dmp

Filesize
4KB

Download
memory/1368-30-0x000007FEF5A00000-0x000007FEF63EC000-memory.dmp

Filesize
9.9MB

Download
memory/1368-1-0x00000000011C0000-0x00000000011D8000-memory.dmp

Filesize
96KB

Download
memory/2176-34-0x0000000000870000-0x0000000000888000-memory.dmp

Filesize
96KB

Download
memory/2768-7-0x0000000002790000-0x0000000002810000-memory.dmp

Filesize
512KB

Download
memory/2768-8-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2768-9-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2908-15-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2908-16-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads