xworm | 72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3

General

Target

72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe
Size

70KB
MD5

cb23e666cb32131891973871950f8080
SHA1

ee3223b5ace61c7e111d21f986b8e3cef73cdd11
SHA256

72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3
SHA512

aeb329ba7285a822b39be4794720fd57caaa4535d26ee98ba660862ef17e46aa93b70a1d6a415ad1e685d5cd9187cfe97c9a018d0ee63472b2caade3b75ab7ae
SSDEEP

1536:DsYRmYACQFrxIHmT7OMbEG7nKENiCD6+45xOGvLUuxqO:DZJj4dIHudbEdIz6xOGvLEO

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:33795

includes-confident.gl.at.ply.gg:33795

Attributes

Install_directory
%AppData%
install_file
online-fix.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2372-1-0x0000000000D80000-0x0000000000D98000-memory.dmp	family_xworm
behavioral1/files/0x0010000000012280-34.dat	family_xworm
behavioral1/memory/316-36-0x0000000000300000-0x0000000000318000-memory.dmp	family_xworm
behavioral1/memory/952-39-0x0000000000930000-0x0000000000948000-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
556	powershell.exe
2908	powershell.exe
2756	powershell.exe
2560	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\online-fix.lnk	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\online-fix.lnk	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe

Executes dropped EXE 2 IoCs

pid	Process
316	online-fix.exe
952	online-fix.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\online-fix = "C:\\Users\\Admin\\AppData\\Roaming\\online-fix.exe"	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.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
756	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2756	powershell.exe
2560	powershell.exe
556	powershell.exe
2908	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2560	powershell.exe
Token: SeDebugPrivilege	556	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeDebugPrivilege	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe
Token: SeDebugPrivilege	316	online-fix.exe
Token: SeDebugPrivilege	952	online-fix.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	32
PID 2372 wrote to memory of 2756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	32
PID 2372 wrote to memory of 2756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	32
PID 2372 wrote to memory of 2560	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	34
PID 2372 wrote to memory of 2560	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	34
PID 2372 wrote to memory of 2560	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	34
PID 2372 wrote to memory of 556	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	36
PID 2372 wrote to memory of 556	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	36
PID 2372 wrote to memory of 556	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	36
PID 2372 wrote to memory of 2908	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	38
PID 2372 wrote to memory of 2908	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	38
PID 2372 wrote to memory of 2908	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	38
PID 2372 wrote to memory of 756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	40
PID 2372 wrote to memory of 756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	40
PID 2372 wrote to memory of 756	2372	72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe	40
PID 2884 wrote to memory of 316	2884	taskeng.exe	43
PID 2884 wrote to memory of 316	2884	taskeng.exe	43
PID 2884 wrote to memory of 316	2884	taskeng.exe	43
PID 2884 wrote to memory of 952	2884	taskeng.exe	45
PID 2884 wrote to memory of 952	2884	taskeng.exe	45
PID 2884 wrote to memory of 952	2884	taskeng.exe	45

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\72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe
"C:\Users\Admin\AppData\Local\Temp\72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- 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\72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2560
- 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\online-fix.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:556
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'online-fix.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "online-fix" /tr "C:\Users\Admin\AppData\Roaming\online-fix.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:756

C:\Windows\system32\taskeng.exe
taskeng.exe {445D77F1-BE27-46E3-99E8-3EE7AE9E09E1} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Roaming\online-fix.exe
  C:\Users\Admin\AppData\Roaming\online-fix.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:316
- C:\Users\Admin\AppData\Roaming\online-fix.exe
  C:\Users\Admin\AppData\Roaming\online-fix.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:952

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

Filesize
7KB

MD5
7c5d9d92ddbb4676b07c0a3fea2a5264

SHA1
4dec39f684b2318bc53897c1d38fc07b4ac07f1e

SHA256
24f9d1f0c60e80578e3ce2ad2e363dba3095ca47f8aceb47915723def43f9b96

SHA512
e73261fcb2dc042764df9dceddba271d2b439778a0add99a1c766ae40f3dc5fad0dd3d8a5a62b9f6ef9d92ef32f84e2848fceddba44208316754747faec56a26

Download Submit
C:\Users\Admin\AppData\Roaming\online-fix.exe

Filesize
70KB

MD5
cb23e666cb32131891973871950f8080

SHA1
ee3223b5ace61c7e111d21f986b8e3cef73cdd11

SHA256
72d1c1095c58dac49282ff54d3ca3b7a927681e2a56d5e09e90cabcf48118fa3

SHA512
aeb329ba7285a822b39be4794720fd57caaa4535d26ee98ba660862ef17e46aa93b70a1d6a415ad1e685d5cd9187cfe97c9a018d0ee63472b2caade3b75ab7ae

Download Submit
memory/316-36-0x0000000000300000-0x0000000000318000-memory.dmp

Filesize
96KB

Download
memory/952-39-0x0000000000930000-0x0000000000948000-memory.dmp

Filesize
96KB

Download
memory/2372-27-0x000007FEF61E3000-0x000007FEF61E4000-memory.dmp

Filesize
4KB

Download
memory/2372-0-0x000007FEF61E3000-0x000007FEF61E4000-memory.dmp

Filesize
4KB

Download
memory/2372-32-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2372-2-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2372-1-0x0000000000D80000-0x0000000000D98000-memory.dmp

Filesize
96KB

Download
memory/2560-15-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2560-16-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2756-9-0x0000000002870000-0x0000000002878000-memory.dmp

Filesize
32KB

Download
memory/2756-8-0x000000001B520000-0x000000001B802000-memory.dmp

Filesize
2.9MB

Download
memory/2756-7-0x00000000027F0000-0x0000000002870000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads