xworm | e03b63507efaff9f6b7a50cc018fbd2792879c99723dd14577a5d371324333ce

Analysis

max time kernel
147s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-01-2025 01:32

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General

Target

PrivateCheat.exe
Size

1.7MB
MD5

21b0523a2f28a5b9e67485f15ae66768
SHA1

fa236541f49bc464bbc90c738842783b46c375d5
SHA256

e03b63507efaff9f6b7a50cc018fbd2792879c99723dd14577a5d371324333ce
SHA512

72ba597085dd4ca63de7c6df2018c95693ac4f3c101335d667c4e9f140085f1990ad73c522783771ae34202cd9d04510b6cd2108372afe64ce01d78bb17a428b
SSDEEP

49152:wxtKC/D2aa/g/Kc7+FR2auMPURVLA+1iVKwn0jI2:AtKAqoScMRTkRiVKwn0jI2

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:21252

land-long.gl.at.ply.gg:21252

Attributes

Install_directory
%Userprofile%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x000d000000015ceb-6.dat	family_xworm
behavioral1/memory/2480-10-0x00000000009A0000-0x00000000009B6000-memory.dmp	family_xworm
behavioral1/memory/2568-51-0x0000000001270000-0x0000000001286000-memory.dmp	family_xworm
behavioral1/memory/2368-54-0x00000000013A0000-0x00000000013B6000-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
2800	powershell.exe
2640	powershell.exe
1468	powershell.exe
2852	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
2480	rat test xworm.exe
2716	Kryptoware Private Auth.exe
2568	svchost.exe
2368	svchost.exe
1800	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
1800	PrivateCheat.exe
2728	Process not Found

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\svchost = "C:\\Users\\Admin\\svchost.exe"	rat test xworm.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
2824	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2800	powershell.exe
2640	powershell.exe
1468	powershell.exe
2852	powershell.exe
2480	rat test xworm.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	rat test xworm.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	1468	powershell.exe
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	2480	rat test xworm.exe
Token: SeDebugPrivilege	2568	svchost.exe
Token: SeDebugPrivilege	2368	svchost.exe
Token: SeDebugPrivilege	1800	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2480	rat test xworm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2480	1800	PrivateCheat.exe	31
PID 1800 wrote to memory of 2480	1800	PrivateCheat.exe	31
PID 1800 wrote to memory of 2480	1800	PrivateCheat.exe	31
PID 1800 wrote to memory of 2716	1800	PrivateCheat.exe	32
PID 1800 wrote to memory of 2716	1800	PrivateCheat.exe	32
PID 1800 wrote to memory of 2716	1800	PrivateCheat.exe	32
PID 2480 wrote to memory of 2800	2480	rat test xworm.exe	35
PID 2480 wrote to memory of 2800	2480	rat test xworm.exe	35
PID 2480 wrote to memory of 2800	2480	rat test xworm.exe	35
PID 2480 wrote to memory of 2640	2480	rat test xworm.exe	37
PID 2480 wrote to memory of 2640	2480	rat test xworm.exe	37
PID 2480 wrote to memory of 2640	2480	rat test xworm.exe	37
PID 2480 wrote to memory of 1468	2480	rat test xworm.exe	39
PID 2480 wrote to memory of 1468	2480	rat test xworm.exe	39
PID 2480 wrote to memory of 1468	2480	rat test xworm.exe	39
PID 2480 wrote to memory of 2852	2480	rat test xworm.exe	41
PID 2480 wrote to memory of 2852	2480	rat test xworm.exe	41
PID 2480 wrote to memory of 2852	2480	rat test xworm.exe	41
PID 2480 wrote to memory of 2824	2480	rat test xworm.exe	43
PID 2480 wrote to memory of 2824	2480	rat test xworm.exe	43
PID 2480 wrote to memory of 2824	2480	rat test xworm.exe	43
PID 2216 wrote to memory of 2568	2216	taskeng.exe	46
PID 2216 wrote to memory of 2568	2216	taskeng.exe	46
PID 2216 wrote to memory of 2568	2216	taskeng.exe	46
PID 2216 wrote to memory of 2368	2216	taskeng.exe	47
PID 2216 wrote to memory of 2368	2216	taskeng.exe	47
PID 2216 wrote to memory of 2368	2216	taskeng.exe	47
PID 2216 wrote to memory of 1800	2216	taskeng.exe	48
PID 2216 wrote to memory of 1800	2216	taskeng.exe	48
PID 2216 wrote to memory of 1800	2216	taskeng.exe	48

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\PrivateCheat.exe
"C:\Users\Admin\AppData\Local\Temp\PrivateCheat.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\rat test xworm.exe
  "C:\Users\Admin\AppData\Local\Temp\rat test xworm.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2480
- - 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\rat test xworm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2800
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rat test xworm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2640
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1468
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2852
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2824
- C:\Users\Admin\AppData\Local\Temp\Kryptoware Private Auth.exe
  "C:\Users\Admin\AppData\Local\Temp\Kryptoware Private Auth.exe"
  2⤵
  - Executes dropped EXE
  PID:2716

C:\Windows\system32\taskeng.exe
taskeng.exe {674FFAA6-810D-43D0-B22A-9099F77C274F} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rat test xworm.exe

Filesize
65KB

MD5
fbe7f61c52a1754815d5da441a4fb469

SHA1
5540bfc30a9b05f1972d896283bd1f107db18987

SHA256
5d8c53e451c55ce6969cfe254e0c22a3c48915c1400c66fc9dc806d7ad824f24

SHA512
e524006b40df8d3a677f20928d6fb5f31d08197d351bcfcdb30bd08cf041500794998728397119775d584f4f3f4359e7d881deea4aec9f9cc9add524454d4635

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

Filesize
7KB

MD5
ff0662bdf702597d506439ed68c84bdb

SHA1
84b93e16fe31784a77e440d1164e3673f49ebfc5

SHA256
1e090c45f4da225385736dbcd9930960bdadd01eaa81b3af76b48bc700d1e853

SHA512
913d75e7eead6af5558e75963e85ae00193ccc3d3e7aa6f851a329eef3074ff2e94dd96e69591121a16d431adc8ea51cb607f9e9b6fe2e6508889e6d3f368004

Download Submit
\Users\Admin\AppData\Local\Temp\Kryptoware Private Auth.exe

Filesize
3.1MB

MD5
e5668fa97f0e996ed5cce712558a95d0

SHA1
66b39e2a7ba8bc8c80abb4651b77890e4f492c44

SHA256
e3f69c162066dcb9815a4733d62140485083d388f7e8d85e0c3fdfc2d342cee5

SHA512
38ba1c1881011e482306060e91caeeafd7b3e992e74e01e0fbd7a29336da5a55a3f7ac3ace9792d7dd6e77d293709d4b3f576a3b67e3dd4cbac1a0cce9218a4f

Download Submit
memory/1800-1-0x00000000011D0000-0x0000000001394000-memory.dmp

Filesize
1.8MB

Download
memory/1800-4-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/1800-15-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/1800-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2368-54-0x00000000013A0000-0x00000000013B6000-memory.dmp

Filesize
88KB

Download
memory/2480-17-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-10-0x00000000009A0000-0x00000000009B6000-memory.dmp

Filesize
88KB

Download
memory/2480-46-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-47-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-9-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2568-51-0x0000000001270000-0x0000000001286000-memory.dmp

Filesize
88KB

Download
memory/2640-29-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2640-30-0x0000000002610000-0x0000000002618000-memory.dmp

Filesize
32KB

Download
memory/2800-23-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2800-22-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download