xworm | a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9

Analysis

max time kernel
149s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/08/2026, 19:01

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General

Target
a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
Size 785KB
Sample260809-xpff6sxtcz
SHA256 a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9
MD5 f3274d6f39347910d553b6dffa6364bf
SHA1 d93b79355ddf624e112a2fd3644ea5d66a36dbe9
SHA512 64f876012364e1f469b9c7cdc5c70853d0dd5d698f22feba9beeb46c487d0ee2e3edfe9c3550b5a32bbb6203a5e6e0b25f7f79ad6c2c5ab2b833fc0251d76992
SSDEEP 12288:f4MGApapyjt6Wh/VojGI5NV2bFsBtWHA9H1EK3w4ASZzbZRT9ehbyAZlXBWnC:S86Wh/GjJNVOF7HaH1elSZ/+b5ZfW
TLSH
T1C70502043365DB07E99563B81872F67413BA7E9EB411E21A8FE4AEEF7526F804D04363
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution xworm persistence privilege_escalation rat trojan

Malware Config

Extracted

Family

xworm

Version

XWorm V7.1

81.90.31.12:9438

Attributes

Install_directory
%AppData%
install_file
XWormClient.exe

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2336-13-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
756	powershell.exe

Creates a file in the Startup directory 1 TTPs 2 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XWormClient.lnk	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XWormClient.lnk	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe

Executes dropped EXE 3 IoCs

pid	Process
4112	JZEocNxnVffvo.exe
4504	JZEocNxnVffvo.exe
4728	JZEocNxnVffvo.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-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JZEocNxnVffvo = "\"C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\powershell.exe\" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File \"C:\\Users\\Admin\\AppData\\Local\\Temp\\xaw2obc3byl.ps1\""	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 820 set thread context of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 4112 set thread context of 4728	4112	JZEocNxnVffvo.exe	98

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 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	JZEocNxnVffvo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JZEocNxnVffvo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
756	powershell.exe
756	powershell.exe
4112	JZEocNxnVffvo.exe
4112	JZEocNxnVffvo.exe
4112	JZEocNxnVffvo.exe
4112	JZEocNxnVffvo.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
Token: SeDebugPrivilege	2336	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
Token: SeDebugPrivilege	756	powershell.exe
Token: SeDebugPrivilege	4112	JZEocNxnVffvo.exe
Token: SeDebugPrivilege	4728	JZEocNxnVffvo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 820 wrote to memory of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 820 wrote to memory of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 820 wrote to memory of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 820 wrote to memory of 2336	820	a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe	89
PID 756 wrote to memory of 4112	756	powershell.exe	92
PID 4112 wrote to memory of 4504	4112	JZEocNxnVffvo.exe	97
PID 4112 wrote to memory of 4728	4112	JZEocNxnVffvo.exe	98
PID 4112 wrote to memory of 4728	4112	JZEocNxnVffvo.exe	98
PID 4112 wrote to memory of 4728	4112	JZEocNxnVffvo.exe	98
PID 4112 wrote to memory of 4728	4112	JZEocNxnVffvo.exe	98
PID 4112 wrote to memory of 4728	4112	JZEocNxnVffvo.exe	98

C:\Users\Admin\AppData\Local\Temp\a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
"C:\Users\Admin\AppData\Local\Temp\a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:820
- C:\Users\Admin\AppData\Local\Temp\a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe
  "C:\Users\Admin\AppData\Local\Temp\a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe"
  2⤵
  - Creates a file in the Startup directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2336

C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\xaw2obc3byl.ps1"
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:756
- C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe
  "C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe"
  2⤵
  - 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:4112
- - C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe
    "C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe"
    3⤵
    - Executes dropped EXE
    PID:4504
- - C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe
    "C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4728

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
TLSH
T104219B303222B5D84D022F530C0869C513EF4759BB64EE2CB959231EDD2A457AB211E3
MD5 SHA1 SHA512 TLSH

Submit Download

__PSScriptPolicyTest_jbudsmm0.opl.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jbudsmm0.opl.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

xaw2obc3byl.ps1

Path C:\Users\Admin\AppData\Local\Temp\xaw2obc3byl.ps1
Size 1KB
SHA256 b47a3191e441f6f23193ef944c45b17c4e1a7b084a82d77fdfe57b8f869c1807
MD5 4e78cd4e4e64a36825d5aeecf1da6c46
SHA1 898feb389502c7142d464a8232b3211ccb7b37b4
SHA512 70bc5f90b671a83201b291081b37c063ab5711093904ccc4aea2b966d3f98ec963ae314ea487b07937902cfc6a4171da3193c7ae3f6d10c97c445af3a07ac04b
TLSH
T1ED210E0B8E4903CA506847F00A1334CD756DA0CF6BAF019099ECA4AEB36BE23346DCE4
MD5 SHA1 SHA512 TLSH

Submit Download

JZEocNxnVffvo.exe

Path C:\Users\Admin\AppData\Roaming\JZEocNxnVffvo.exe
Size 785KB
SHA256 a75c6043cb8acb5d73ee6608373e56e376f158585643bad939f04e02bb096ab9
MD5 f3274d6f39347910d553b6dffa6364bf
SHA1 d93b79355ddf624e112a2fd3644ea5d66a36dbe9
SHA512 64f876012364e1f469b9c7cdc5c70853d0dd5d698f22feba9beeb46c487d0ee2e3edfe9c3550b5a32bbb6203a5e6e0b25f7f79ad6c2c5ab2b833fc0251d76992
SSDEEP 12288:f4MGApapyjt6Wh/VojGI5NV2bFsBtWHA9H1EK3w4ASZzbZRT9ehbyAZlXBWnC:S86Wh/GjJNVOF7HaH1elSZ/+b5ZfW
TLSH
T1C70502043365DB07E99563B81872F67413BA7E9EB411E21A8FE4AEEF7526F804D04363
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/756-17-0x000001DC7FE90000-0x000001DC7FEA0000-memory.dmp

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memory/756-32-0x000001DC023C0000-0x000001DC0250E000-memory.dmp

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memory/756-27-0x000001DC7FE90000-0x000001DC7FEA0000-memory.dmp

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memory/756-23-0x000001DC67970000-0x000001DC67992000-memory.dmp

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memory/756-16-0x000001DC7FE90000-0x000001DC7FEA0000-memory.dmp

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memory/820-7-0x00000000057D0000-0x00000000057E0000-memory.dmp

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memory/820-2-0x0000000005820000-0x00000000058B2000-memory.dmp

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memory/820-8-0x0000000006ED0000-0x0000000006F78000-memory.dmp

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memory/820-3-0x00000000057D0000-0x00000000057E0000-memory.dmp

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memory/820-1-0x0000000005EB0000-0x0000000006454000-memory.dmp

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memory/820-0-0x0000000000D80000-0x0000000000E4A000-memory.dmp

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memory/820-6-0x0000000005C80000-0x0000000005C96000-memory.dmp

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memory/820-5-0x0000000005AE0000-0x0000000005B7C000-memory.dmp

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memory/820-4-0x00000000058E0000-0x00000000058EA000-memory.dmp

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memory/2336-13-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/2336-38-0x00000000030C0000-0x00000000030D0000-memory.dmp

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memory/2336-39-0x00000000030C0000-0x00000000030D0000-memory.dmp

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memory/4112-33-0x0000000005310000-0x0000000005326000-memory.dmp

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