xworm | a8dd80f236a5b28dd7f4856ca32bb254832d4a66a0405cc32e61bd4762915714

Analysis

max time kernel
123s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2025, 14:37

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General

Target

CulMasterBot.exe
Size

758KB
MD5

2417767a8d9740d0c304bb72ed185b67
SHA1

21bbd4db761968bc1fb0708767ef10814dd41868
SHA256

7f8878badd48f61c9af71d304ee2cc5d2e580a92816b721a206d2889063f4b81
SHA512

c0b947608909829271cefb797017933a02d55a378eb6f70ecba20c3d86658c46fb58a515e90d32419cfdeab63d7e166fc699cbf0bfba8b5135301b5d8b9f63ae
SSDEEP

12288:7fQqQuCmgRYeJIDdrd+pQkKVn6nY4u5fsR1b:7fQqQuiJIprdOQJn6nbuiF

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

176.65.134.31:7000

Mutex

6H3f8cuSC1IGC8kj

Attributes

install_file
USB.exe

aes.plain

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
behavioral2/memory/4496-22-0x00000000060B0000-0x00000000060BE000-memory.dmp	disable_win_def

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4496-13-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

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

Executes dropped EXE 1 IoCs

pid	Process
3112	dgowya.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1320 set thread context of 4496	1320	CulMasterBot.exe	87
PID 3112 set thread context of 3992	3112	dgowya.exe	104

System Location Discovery: System Language Discovery 1 TTPs 4 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	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dgowya.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CulMasterBot.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3992	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1320	CulMasterBot.exe
1320	CulMasterBot.exe
1320	CulMasterBot.exe
4496	InstallUtil.exe
3112	dgowya.exe
3112	dgowya.exe
3112	dgowya.exe
3112	dgowya.exe
3112	dgowya.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1320	CulMasterBot.exe
Token: SeDebugPrivilege	4496	InstallUtil.exe
Token: SeDebugPrivilege	3112	dgowya.exe
Token: SeDebugPrivilege	3992	InstallUtil.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 1320 wrote to memory of 4496	1320	CulMasterBot.exe	87
PID 4496 wrote to memory of 3112	4496	InstallUtil.exe	103
PID 4496 wrote to memory of 3112	4496	InstallUtil.exe	103
PID 4496 wrote to memory of 3112	4496	InstallUtil.exe	103
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104
PID 3112 wrote to memory of 3992	3112	dgowya.exe	104

C:\Users\Admin\AppData\Local\Temp\CulMasterBot.exe
"C:\Users\Admin\AppData\Local\Temp\CulMasterBot.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Users\Admin\AppData\Local\Temp\dgowya.exe
    "C:\Users\Admin\AppData\Local\Temp\dgowya.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3112
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: AddClipboardFormatListener
      Suspicious use of AdjustPrivilegeToken
      PID:3992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\__PSScriptPolicyTest_ra32vzeq.iqc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
882KB

MD5
0bf190d5229cd876dc398141addb4755

SHA1
83ad458b0c3ca248e7a05e83ceb39027138af3ac

SHA256
8991a0fb032262c8392fdd13e8d0c0a9782dd73d11dfab93eb94505bd4145844

SHA512
966a0e8dfbc5859e23bba8be932518614282579b1bb3cbca8aec7138f4b6de096ed230e44811fd6dc95304899898d451d202457457e38dfddaaf2834fbb69f53

Download Submit
memory/1320-12-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1320-10-0x0000000006A80000-0x0000000006A86000-memory.dmp

Filesize
24KB

Download
memory/1320-4-0x0000000005290000-0x0000000005322000-memory.dmp

Filesize
584KB

Download
memory/1320-5-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1320-6-0x0000000004F90000-0x0000000004FB6000-memory.dmp

Filesize
152KB

Download
memory/1320-7-0x00000000054D0000-0x00000000054DA000-memory.dmp

Filesize
40KB

Download
memory/1320-8-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1320-0-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/1320-1-0x0000000000460000-0x0000000000522000-memory.dmp

Filesize
776KB

Download
memory/1320-11-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/1320-3-0x00000000057A0000-0x0000000005D44000-memory.dmp

Filesize
5.6MB

Download
memory/1320-2-0x0000000004EB0000-0x0000000004F4C000-memory.dmp

Filesize
624KB

Download
memory/1320-9-0x0000000006A10000-0x0000000006A2A000-memory.dmp

Filesize
104KB

Download
memory/1320-15-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3112-82-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3112-76-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3112-75-0x00000000051B0000-0x00000000051D6000-memory.dmp

Filesize
152KB

Download
memory/3112-54-0x0000000000880000-0x0000000000964000-memory.dmp

Filesize
912KB

Download
memory/3112-52-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3992-83-0x0000000005260000-0x0000000005322000-memory.dmp

Filesize
776KB

Download
memory/3992-80-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3992-85-0x0000000006590000-0x0000000006670000-memory.dmp

Filesize
896KB

Download
memory/3992-84-0x00000000060B0000-0x000000000618E000-memory.dmp

Filesize
888KB

Download
memory/4496-47-0x0000000005BF0000-0x0000000005C12000-memory.dmp

Filesize
136KB

Download
memory/4496-68-0x0000000009860000-0x0000000009903000-memory.dmp

Filesize
652KB

Download
memory/4496-43-0x0000000007910000-0x00000000079A6000-memory.dmp

Filesize
600KB

Download
memory/4496-34-0x00000000077F0000-0x0000000007826000-memory.dmp

Filesize
216KB

Download
memory/4496-49-0x0000000005C90000-0x0000000005CDA000-memory.dmp

Filesize
296KB

Download
memory/4496-48-0x0000000005C20000-0x0000000005C3E000-memory.dmp

Filesize
120KB

Download
memory/4496-50-0x0000000007AB0000-0x0000000007E04000-memory.dmp

Filesize
3.3MB

Download
memory/4496-51-0x0000000007E10000-0x0000000007E76000-memory.dmp

Filesize
408KB

Download
memory/4496-33-0x0000000006F20000-0x0000000006F3A000-memory.dmp

Filesize
104KB

Download
memory/4496-53-0x0000000008530000-0x0000000008552000-memory.dmp

Filesize
136KB

Download
memory/4496-23-0x0000000006FC0000-0x00000000075E8000-memory.dmp

Filesize
6.2MB

Download
memory/4496-55-0x0000000008650000-0x000000000869C000-memory.dmp

Filesize
304KB

Download
memory/4496-56-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-66-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-67-0x0000000009840000-0x000000000985E000-memory.dmp

Filesize
120KB

Download
memory/4496-42-0x0000000007EB0000-0x000000000852A000-memory.dmp

Filesize
6.5MB

Download
memory/4496-69-0x0000000009AD0000-0x0000000009ADA000-memory.dmp

Filesize
40KB

Download
memory/4496-70-0x0000000009D80000-0x0000000009D91000-memory.dmp

Filesize
68KB

Download
memory/4496-71-0x0000000009C20000-0x0000000009C2E000-memory.dmp

Filesize
56KB

Download
memory/4496-72-0x0000000009DA0000-0x0000000009DB4000-memory.dmp

Filesize
80KB

Download
memory/4496-73-0x0000000009DE0000-0x0000000009DFA000-memory.dmp

Filesize
104KB

Download
memory/4496-74-0x0000000009E00000-0x0000000009E08000-memory.dmp

Filesize
32KB

Download
memory/4496-22-0x00000000060B0000-0x00000000060BE000-memory.dmp

Filesize
56KB

Download
memory/4496-20-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-77-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-78-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-19-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-18-0x00000000053B0000-0x0000000005416000-memory.dmp

Filesize
408KB

Download
memory/4496-17-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-16-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4496-13-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download