xworm | be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d

General

Target

be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Size

77KB
MD5

5e8a5156dbc7d49253c816d51b6db041
SHA1

0af49260496487b42325309b0748ed9657649d03
SHA256

be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d
SHA512

96d70896c34ca88e9cdf315c93bb2fb10195f663331e2f74ded08bf3aff5c7ba176bda8aa5193f62aa251fa262d59c8e70a7de4b1d97ac130c5a6461278901cc
SSDEEP

1536:x5sFO8g/9VM5dQ+aomobhr3KXg6wzOB1SmOnU7Ua+GD:x5sU9Vv4bbhr6SOB1S5nU7MGD

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

left-noon.gl.at.ply.gg:60705

Attributes

Install_directory
%AppData%
install_file
US11B.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2764-1-0x0000000000320000-0x000000000033A000-memory.dmp	family_xworm
behavioral1/files/0x00150000000054a9-30.dat	family_xworm
behavioral1/memory/1912-36-0x0000000001180000-0x000000000119A000-memory.dmp	family_xworm
behavioral1/memory/1112-39-0x00000000011E0000-0x00000000011FA000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1680	powershell.exe
3064	powershell.exe
1572	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.lnk	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.lnk	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Executes dropped EXE 2 IoCs

pid	Process
1912	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d = "C:\\Users\\Admin\\AppData\\Roaming\\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe"	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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
2500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1680	powershell.exe
3064	powershell.exe
1572	powershell.exe
2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	1680	powershell.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	1572	powershell.exe
Token: SeDebugPrivilege	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	1912	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 1680	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	31
PID 2764 wrote to memory of 1680	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	31
PID 2764 wrote to memory of 1680	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	31
PID 2764 wrote to memory of 3064	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	33
PID 2764 wrote to memory of 3064	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	33
PID 2764 wrote to memory of 3064	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	33
PID 2764 wrote to memory of 1572	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	35
PID 2764 wrote to memory of 1572	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	35
PID 2764 wrote to memory of 1572	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	35
PID 2764 wrote to memory of 2500	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	37
PID 2764 wrote to memory of 2500	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	37
PID 2764 wrote to memory of 2500	2764	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	37
PID 1564 wrote to memory of 1912	1564	taskeng.exe	41
PID 1564 wrote to memory of 1912	1564	taskeng.exe	41
PID 1564 wrote to memory of 1912	1564	taskeng.exe	41
PID 1564 wrote to memory of 1112	1564	taskeng.exe	42
PID 1564 wrote to memory of 1112	1564	taskeng.exe	42
PID 1564 wrote to memory of 1112	1564	taskeng.exe	42

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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
"C:\Users\Admin\AppData\Local\Temp\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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:2764
- 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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- 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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1572
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d" /tr "C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2500

C:\Windows\system32\taskeng.exe
taskeng.exe {F295CAF5-4F5E-43AE-8CD6-581F7EA99B45} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
  C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1912
- C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
  C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1112

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

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

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
44ec295a2f434595aa90defce2e2f15b

SHA1
9244fde0263fab555c881f1e527fcb77ba81a841

SHA256
279135b45c748034ee84753e5891bbed27d0d7206fe612cd094711d846cbbf65

SHA512
0ea61ee8920f8c3e7b888d0903b3f5e9397fbb6d589d718d54268767d22fa85ce24652749438a9b7c68e8a3f4239debd418e6eb9b0b9bc83a87a3524659e58f6

Download Submit
C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Filesize
77KB

MD5
5e8a5156dbc7d49253c816d51b6db041

SHA1
0af49260496487b42325309b0748ed9657649d03

SHA256
be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d

SHA512
96d70896c34ca88e9cdf315c93bb2fb10195f663331e2f74ded08bf3aff5c7ba176bda8aa5193f62aa251fa262d59c8e70a7de4b1d97ac130c5a6461278901cc

Download Submit
memory/1112-39-0x00000000011E0000-0x00000000011FA000-memory.dmp

Filesize
104KB

Download
memory/1680-7-0x00000000027D0000-0x0000000002850000-memory.dmp

Filesize
512KB

Download
memory/1680-8-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/1680-9-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/1912-36-0x0000000001180000-0x000000000119A000-memory.dmp

Filesize
104KB

Download
memory/2764-2-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/2764-0-0x000007FEF5FF3000-0x000007FEF5FF4000-memory.dmp

Filesize
4KB

Download
memory/2764-25-0x000007FEF5FF3000-0x000007FEF5FF4000-memory.dmp

Filesize
4KB

Download
memory/2764-1-0x0000000000320000-0x000000000033A000-memory.dmp

Filesize
104KB

Download
memory/2764-32-0x000007FEF5FF0000-0x000007FEF69DC000-memory.dmp

Filesize
9.9MB

Download
memory/3064-15-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/3064-16-0x0000000002070000-0x0000000002078000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads