xworm | 4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca

Analysis

max time kernel
120s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/11/2024, 03:35

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General

Target

4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
Size

562KB
MD5

ff9e45d7326698f34526793bf1244811
SHA1

b3ff69abfe1c5e6633a866ffbebe2139a69e3f0a
SHA256

4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca
SHA512

ed2e02262beb00f77c5d17854c7b6544cdb4edce37e870505e21c0cd08999cb99904a667e5ed31cde3a3437c4e9713e6bfc63f091b30a9cec25a046ad0120657
SSDEEP

12288:FDxrXQ9TZweejcQ1FXQEcupRk6CvPlZ0wJOszYkR:ZQejd1BpcupC6Cb0qL

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

kanrplest.duckdns.org:4068

Mutex

TdUxMCK2FUdy51AH

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2540-30-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2540-29-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2540-28-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2540-25-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000410000-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 5 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1884	powershell.exe
584	powershell.exe
2752	powershell.exe
2720	powershell.exe
1936	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.lnk	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.lnk	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

Loads dropped DLL 1 IoCs

pid	Process
2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.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\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca = "C:\\Users\\Admin\\AppData\\Roaming\\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37

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 8 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2752	powershell.exe
2720	powershell.exe
1936	powershell.exe
1884	powershell.exe
584	powershell.exe
2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	1884	powershell.exe
Token: SeDebugPrivilege	584	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 2752	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	31
PID 2596 wrote to memory of 2752	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	31
PID 2596 wrote to memory of 2752	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	31
PID 2596 wrote to memory of 2752	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	31
PID 2596 wrote to memory of 2720	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	33
PID 2596 wrote to memory of 2720	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	33
PID 2596 wrote to memory of 2720	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	33
PID 2596 wrote to memory of 2720	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	33
PID 2596 wrote to memory of 2948	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	35
PID 2596 wrote to memory of 2948	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	35
PID 2596 wrote to memory of 2948	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	35
PID 2596 wrote to memory of 2948	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	35
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2596 wrote to memory of 2540	2596	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	37
PID 2540 wrote to memory of 1936	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	38
PID 2540 wrote to memory of 1936	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	38
PID 2540 wrote to memory of 1936	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	38
PID 2540 wrote to memory of 1936	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	38
PID 2540 wrote to memory of 1884	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	40
PID 2540 wrote to memory of 1884	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	40
PID 2540 wrote to memory of 1884	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	40
PID 2540 wrote to memory of 1884	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	40
PID 2540 wrote to memory of 584	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	42
PID 2540 wrote to memory of 584	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	42
PID 2540 wrote to memory of 584	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	42
PID 2540 wrote to memory of 584	2540	4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe	42

C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
"C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RTUZKYTc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RTUZKYTc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF9BA.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2948
- C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
  "C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1936
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1884
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:584

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF9BA.tmp

Filesize
1KB

MD5
67a03c56b33f3e35dadb05097f834df3

SHA1
717f6aec972d49e5d24ee0f2897a0c5105fe804f

SHA256
6a089004fb50c4cdba024723ca59c8a8377cad289066148fe89efbf162908de8

SHA512
c568930e375297c8c017229e84fd48db43d7f082f616bee157d75e32e8ae32447bc112c129c479d5e36b4d4af338b2a7c8b71a18760c20b4354513c8b7b521af

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
8c24eb745cfe85526964be03e7aaa7c4

SHA1
ef4943523ad1ccc23456fbe8a593c8fa0a9a2763

SHA256
b5421638bc64d1e7f16aad81178925d2497550adf313793e8fd3f26ee78edbf9

SHA512
2c0163496f589314a22b1fc514b9234f3f3ac2091352e974ec46f5a60cae9d23b6a7f81d57cbe74b6ddbf3b6194593f4b71aeb8c16d3ad4dbccd63bf1a1592e7

Download Submit
\Users\Admin\AppData\Roaming\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

Filesize
562KB

MD5
ff9e45d7326698f34526793bf1244811

SHA1
b3ff69abfe1c5e6633a866ffbebe2139a69e3f0a

SHA256
4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca

SHA512
ed2e02262beb00f77c5d17854c7b6544cdb4edce37e870505e21c0cd08999cb99904a667e5ed31cde3a3437c4e9713e6bfc63f091b30a9cec25a046ad0120657

Download Submit
memory/2540-23-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-25-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-21-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-28-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-20-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-30-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2540-29-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2596-3-0x0000000000A40000-0x0000000000A5C000-memory.dmp

Filesize
112KB

Download
memory/2596-4-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

Filesize
4KB

Download
memory/2596-5-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/2596-0-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

Filesize
4KB

Download
memory/2596-6-0x0000000000910000-0x0000000000962000-memory.dmp

Filesize
328KB

Download
memory/2596-31-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/2596-2-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/2596-1-0x00000000010D0000-0x0000000001160000-memory.dmp

Filesize
576KB

Download