xworm | b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c

General

Target

b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Size

68KB
MD5

9821e1e4aacd033130ebdc73c37e958e
SHA1

2971d7117d155309f860740d8edfb25f7b4dc947
SHA256

b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c
SHA512

a1eed0001124e21ad5ed1d9b010ab7fea175c8d5ea38366befe35c834e564995c919ad091fe54462abd2db0c5612cefcc047b852ce6cccd0b3ccd5534824bc03
SSDEEP

1536:R4BEioJRb0gPtcsur5Wfb62+496LvfOgMR5V:R4BEDb0gasur5Eb6y8OgMDV

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

4.tcp.ngrok.io:11205

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1752-1-0x00000000009F0000-0x0000000000A08000-memory.dmp	family_xworm
behavioral2/files/0x000800000001da78-8.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\International\Geo\Nation	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.lnk	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.lnk	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Executes dropped EXE 2 IoCs

pid	Process
4816	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
4412	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.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-1-5-21-2278412438-3475196406-3686434223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c = "C:\\Users\\Admin\\AppData\\Roaming\\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe"	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 7 IoCs

Web Service

T1102

flow	ioc
160	4.tcp.ngrok.io
168	4.tcp.ngrok.io
31	4.tcp.ngrok.io
74	4.tcp.ngrok.io
102	4.tcp.ngrok.io
118	4.tcp.ngrok.io
152	4.tcp.ngrok.io

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
544	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	4816	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	4412	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 544	1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe	89
PID 1752 wrote to memory of 544	1752	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe	89

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\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
"C:\Users\Admin\AppData\Local\Temp\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c" /tr "C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:544

C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4816

C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Filesize
68KB

MD5
9821e1e4aacd033130ebdc73c37e958e

SHA1
2971d7117d155309f860740d8edfb25f7b4dc947

SHA256
b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c

SHA512
a1eed0001124e21ad5ed1d9b010ab7fea175c8d5ea38366befe35c834e564995c919ad091fe54462abd2db0c5612cefcc047b852ce6cccd0b3ccd5534824bc03

Download Submit
memory/1752-0-0x00007FFA9B6C3000-0x00007FFA9B6C5000-memory.dmp

Filesize
8KB

Download
memory/1752-1-0x00000000009F0000-0x0000000000A08000-memory.dmp

Filesize
96KB

Download
memory/1752-10-0x00007FFA9B6C0000-0x00007FFA9C181000-memory.dmp

Filesize
10.8MB

Download
memory/1752-11-0x00007FFA9B6C3000-0x00007FFA9B6C5000-memory.dmp

Filesize
8KB

Download
memory/1752-12-0x00007FFA9B6C0000-0x00007FFA9C181000-memory.dmp

Filesize
10.8MB

Download
memory/4816-15-0x00007FFA9B6C0000-0x00007FFA9C181000-memory.dmp

Filesize
10.8MB

Download
memory/4816-17-0x00007FFA9B6C0000-0x00007FFA9C181000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads