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 3 IoCs

resource	yara_rule
behavioral1/memory/2532-1-0x0000000000940000-0x0000000000958000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120f9-8.dat	family_xworm
behavioral1/memory/2608-16-0x00000000012C0000-0x00000000012D8000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2608	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
1940	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-1-5-21-3063565911-2056067323-3330884624-1000\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 5 IoCs

Web Service

T1102

flow	ioc
6	4.tcp.ngrok.io
70	4.tcp.ngrok.io
106	4.tcp.ngrok.io
114	4.tcp.ngrok.io
129	4.tcp.ngrok.io

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

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
2372	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	2608	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
Token: SeDebugPrivilege	1940	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2372	2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe	30
PID 2532 wrote to memory of 2372	2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe	30
PID 2532 wrote to memory of 2372	2532	b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe	30
PID 2640 wrote to memory of 2608	2640	taskeng.exe	34
PID 2640 wrote to memory of 2608	2640	taskeng.exe	34
PID 2640 wrote to memory of 2608	2640	taskeng.exe	34
PID 2640 wrote to memory of 1940	2640	taskeng.exe	35
PID 2640 wrote to memory of 1940	2640	taskeng.exe	35
PID 2640 wrote to memory of 1940	2640	taskeng.exe	35

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⤵
- Drops startup file
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2532
- 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:2372

C:\Windows\system32\taskeng.exe
taskeng.exe {F982A603-AE4A-4B44-BD01-D3747560998F} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
  C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
  C:\Users\Admin\AppData\Roaming\b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1940

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

2

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
68KB

MD5
9821e1e4aacd033130ebdc73c37e958e

SHA1
2971d7117d155309f860740d8edfb25f7b4dc947

SHA256
b1756113e2a0e25ae11fe444f0029f75a30b9c47794933cb066a63c84a78193c

SHA512
a1eed0001124e21ad5ed1d9b010ab7fea175c8d5ea38366befe35c834e564995c919ad091fe54462abd2db0c5612cefcc047b852ce6cccd0b3ccd5534824bc03

Download Submit
memory/2532-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x0000000000940000-0x0000000000958000-memory.dmp

Filesize
96KB

Download
memory/2532-10-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2532-11-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/2532-12-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-16-0x00000000012C0000-0x00000000012D8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads