xworm | 96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 05:10

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General

Target

555.exe
Size

73KB
MD5

a419ffb32ad6422938129688d39a898f
SHA1

303695e2f43566685c568ca670133b0d717eabcf
SHA256

96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691
SHA512

6a145de4ee6d26b1ee8be5cc22f7888291b8544ea8323f425da8ecfafdf79d961164ddd3c3eaf5a5d7abaa6208e5539c2ea8d2685440e81c6eea2248f8552e9f
SSDEEP

1536:v2oktWbR7i2wiOXObYzDVSUbLUSsr36xOwGZtadQAa:v2ocs7iaOebHUbLGcOwGCdfa

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

house-jungle.gl.at.ply.gg:14868

Attributes

Install_directory
%Userprofile%
install_file
USB.exe

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/1612-49-0x000000001ADE0000-0x000000001ADEE000-memory.dmp	disable_win_def

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1612-1-0x00000000001B0000-0x00000000001C8000-memory.dmp	family_xworm
behavioral1/files/0x000f000000012263-32.dat	family_xworm
behavioral1/memory/3036-34-0x0000000000A70000-0x0000000000A88000-memory.dmp	family_xworm
behavioral1/memory/2280-52-0x0000000000E50000-0x0000000000E68000-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
2332	powershell.exe
2936	powershell.exe
2732	powershell.exe
2508	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bar2lecb.lnk	555.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bar2lecb.lnk	555.exe

Executes dropped EXE 5 IoCs

pid	Process
3036	Bar2lecb
612	owbjjo.exe
2280	Bar2lecb
2548	vsdbut.exe
1016	Bar2lecb

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Bar2lecb = "C:\\Users\\Admin\\Bar2lecb"	555.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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	owbjjo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vsdbut.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
2188	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2936	powershell.exe
2732	powershell.exe
2508	powershell.exe
2332	powershell.exe
1612	555.exe
1612	555.exe
1612	555.exe
1612	555.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	555.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	2508	powershell.exe
Token: SeDebugPrivilege	2332	powershell.exe
Token: SeDebugPrivilege	1612	555.exe
Token: SeDebugPrivilege	3036	Bar2lecb
Token: SeDebugPrivilege	2280	Bar2lecb
Token: SeDebugPrivilege	1016	Bar2lecb

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1612	555.exe
612	owbjjo.exe
2548	vsdbut.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2936	1612	555.exe	31
PID 1612 wrote to memory of 2936	1612	555.exe	31
PID 1612 wrote to memory of 2936	1612	555.exe	31
PID 1612 wrote to memory of 2732	1612	555.exe	33
PID 1612 wrote to memory of 2732	1612	555.exe	33
PID 1612 wrote to memory of 2732	1612	555.exe	33
PID 1612 wrote to memory of 2508	1612	555.exe	35
PID 1612 wrote to memory of 2508	1612	555.exe	35
PID 1612 wrote to memory of 2508	1612	555.exe	35
PID 1612 wrote to memory of 2332	1612	555.exe	37
PID 1612 wrote to memory of 2332	1612	555.exe	37
PID 1612 wrote to memory of 2332	1612	555.exe	37
PID 1612 wrote to memory of 2188	1612	555.exe	39
PID 1612 wrote to memory of 2188	1612	555.exe	39
PID 1612 wrote to memory of 2188	1612	555.exe	39
PID 2972 wrote to memory of 3036	2972	taskeng.exe	42
PID 2972 wrote to memory of 3036	2972	taskeng.exe	42
PID 2972 wrote to memory of 3036	2972	taskeng.exe	42
PID 1612 wrote to memory of 612	1612	555.exe	43
PID 1612 wrote to memory of 612	1612	555.exe	43
PID 1612 wrote to memory of 612	1612	555.exe	43
PID 1612 wrote to memory of 612	1612	555.exe	43
PID 2972 wrote to memory of 2280	2972	taskeng.exe	44
PID 2972 wrote to memory of 2280	2972	taskeng.exe	44
PID 2972 wrote to memory of 2280	2972	taskeng.exe	44
PID 1612 wrote to memory of 2548	1612	555.exe	45
PID 1612 wrote to memory of 2548	1612	555.exe	45
PID 1612 wrote to memory of 2548	1612	555.exe	45
PID 1612 wrote to memory of 2548	1612	555.exe	45
PID 2972 wrote to memory of 1016	2972	taskeng.exe	46
PID 2972 wrote to memory of 1016	2972	taskeng.exe	46
PID 2972 wrote to memory of 1016	2972	taskeng.exe	46

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\555.exe
"C:\Users\Admin\AppData\Local\Temp\555.exe"
1⤵
- 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:1612
- 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\555.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '555.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Bar2lecb'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2508
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Bar2lecb'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2332
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Bar2lecb" /tr "C:\Users\Admin\Bar2lecb"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2188
- C:\Users\Admin\AppData\Local\Temp\owbjjo.exe
  "C:\Users\Admin\AppData\Local\Temp\owbjjo.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:612
- C:\Users\Admin\AppData\Local\Temp\vsdbut.exe
  "C:\Users\Admin\AppData\Local\Temp\vsdbut.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2548

C:\Windows\system32\taskeng.exe
taskeng.exe {6BDFC6A9-DF7C-49CA-852F-FC7469CBA7C9} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\Bar2lecb
  C:\Users\Admin\Bar2lecb
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3036
- C:\Users\Admin\Bar2lecb
  C:\Users\Admin\Bar2lecb
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2280
- C:\Users\Admin\Bar2lecb
  C:\Users\Admin\Bar2lecb
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1016

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\owbjjo.exe

Filesize
20KB

MD5
19796e0d82a76be6dafa5cb7b80e2506

SHA1
ce7d0842683febfbc4e52278a25f75e29ccf6155

SHA256
65d4c633bf347ed4766dbb6e003776a017ccb632d73c6138c3e880a94c114c2d

SHA512
049111891524683fd63036355f02006ca1fd69478aa9597050f1bbeda256b25ce9f28684df80d169d50dcc01a8cbdb17e78b82ea4d49d71b9ee72588bd1e6fbb

Download Submit
C:\Users\Admin\AppData\Local\Temp\vsdbut.exe

Filesize
28KB

MD5
62cbb85434223022a0b0e369b227a3d9

SHA1
4978b691168f16c678a1ffe53e126ba1d946bce0

SHA256
ea3087204e3ed644308a0a96bbf319590a9b2701ac850bb63f2ba3dc4955f1fd

SHA512
f76d281ce4c4401315f811dba1512757fa59a9c1ca6486c006f7861aed793a1f196fd66b772405374a751f383b5a234234e64de16f2fe9d613694e354b882f69

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

Filesize
7KB

MD5
dbb6f8fb491ee761c3965845418e9732

SHA1
7d4c69f5e60a7c70fe14002037fb48cf36997200

SHA256
81aeece055dd1aceede2ac4a8c29a1bb36baa26b9eaa5105b6623911b774e3d9

SHA512
d88022aa30a74b97741c5381210e1dd0b035d02df4ccbca09a5e4f06a623267bf08bc98bb407ab0cdbaf37b86b74eab53852f4dc4d910e7079b538389e6ed5a1

Download Submit
C:\Users\Admin\Bar2lecb

Filesize
73KB

MD5
a419ffb32ad6422938129688d39a898f

SHA1
303695e2f43566685c568ca670133b0d717eabcf

SHA256
96d7f2474c300d7f24cd2635f03d52fe40964a030787d9e84dd1fedbb5618691

SHA512
6a145de4ee6d26b1ee8be5cc22f7888291b8544ea8323f425da8ecfafdf79d961164ddd3c3eaf5a5d7abaa6208e5539c2ea8d2685440e81c6eea2248f8552e9f

Download Submit
memory/1612-14-0x000007FEF6BB3000-0x000007FEF6BB4000-memory.dmp

Filesize
4KB

Download
memory/1612-44-0x000000001A890000-0x000000001A89C000-memory.dmp

Filesize
48KB

Download
memory/1612-50-0x000000001ADF0000-0x000000001ADFC000-memory.dmp

Filesize
48KB

Download
memory/1612-0-0x000007FEF6BB3000-0x000007FEF6BB4000-memory.dmp

Filesize
4KB

Download
memory/1612-27-0x000007FEF6BB0000-0x000007FEF759C000-memory.dmp

Filesize
9.9MB

Download
memory/1612-2-0x000007FEF6BB0000-0x000007FEF759C000-memory.dmp

Filesize
9.9MB

Download
memory/1612-49-0x000000001ADE0000-0x000000001ADEE000-memory.dmp

Filesize
56KB

Download
memory/1612-1-0x00000000001B0000-0x00000000001C8000-memory.dmp

Filesize
96KB

Download
memory/2280-52-0x0000000000E50000-0x0000000000E68000-memory.dmp

Filesize
96KB

Download
memory/2732-16-0x0000000002350000-0x0000000002358000-memory.dmp

Filesize
32KB

Download
memory/2732-15-0x000000001B490000-0x000000001B772000-memory.dmp

Filesize
2.9MB

Download
memory/2936-8-0x00000000025A0000-0x00000000025A8000-memory.dmp

Filesize
32KB

Download
memory/2936-7-0x000000001B3A0000-0x000000001B682000-memory.dmp

Filesize
2.9MB

Download
memory/3036-34-0x0000000000A70000-0x0000000000A88000-memory.dmp

Filesize
96KB

Download