xworm | b7a2def2630cbbca20d06f0d40ceaf00f8df471adb12f62efbeb513681cf4878

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2025, 23:20

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General

Target

quarantine/t98WFZ1.exe
Size

84KB
MD5

46fa2acd78224bd6a0b19d075efd78c2
SHA1

2ded48b4e7322c95a94c4a0a32cd55dcdb7f2fdf
SHA256

f87b5cf691fe69fcad610d5af5d75d119395024580bd7b5a064f8f0399f8903e
SHA512

c2690f4e94aca14ff2ce18aed4451ec212d9010780e2c70714b73b6bf3d8b2409fde38ac000a9d3c9db861b926f4ba48cfde1c0590c8ffa626f539ae321affa8
SSDEEP

1536:lqheMfnlkwr019FmLHOaCbnGrNi2RZEKH4H+6WfDvtOO5RsmXjFneY:AtKBzwLHNCbnGx1ZbDtOOvTN

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral31/memory/3064-1-0x00000000009C0000-0x00000000009DC000-memory.dmp	family_xworm
behavioral31/files/0x000c00000001e6d4-70.dat	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
5384	powershell.exe
4328	powershell.exe
3920	powershell.exe
2992	powershell.exe
4904	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	t98WFZ1.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77Steam.lnk	t98WFZ1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77Steam.lnk	t98WFZ1.exe

Executes dropped EXE 3 IoCs

pid	Process
1456	$77Steam.exe
3568	$77Steam.exe
5200	$77Steam.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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77Steam = "C:\\Users\\Admin\\AppData\\Local\\$77Steam.exe"	t98WFZ1.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ip-api.com
7	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
4008	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3064	t98WFZ1.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3920	powershell.exe
3920	powershell.exe
2992	powershell.exe
2992	powershell.exe
4904	powershell.exe
4904	powershell.exe
5384	powershell.exe
5384	powershell.exe
4328	powershell.exe
4328	powershell.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	t98WFZ1.exe
Token: SeDebugPrivilege	3920	powershell.exe
Token: SeDebugPrivilege	2992	powershell.exe
Token: SeDebugPrivilege	4904	powershell.exe
Token: SeDebugPrivilege	5384	powershell.exe
Token: SeDebugPrivilege	4328	powershell.exe
Token: SeIncBasePriorityPrivilege	3064	t98WFZ1.exe
Token: SeDebugPrivilege	3064	t98WFZ1.exe
Token: SeDebugPrivilege	1456	$77Steam.exe
Token: SeDebugPrivilege	3568	$77Steam.exe
Token: SeDebugPrivilege	5200	$77Steam.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 3920	3064	t98WFZ1.exe	87
PID 3064 wrote to memory of 3920	3064	t98WFZ1.exe	87
PID 3064 wrote to memory of 2992	3064	t98WFZ1.exe	89
PID 3064 wrote to memory of 2992	3064	t98WFZ1.exe	89
PID 3064 wrote to memory of 4904	3064	t98WFZ1.exe	93
PID 3064 wrote to memory of 4904	3064	t98WFZ1.exe	93
PID 3064 wrote to memory of 5384	3064	t98WFZ1.exe	95
PID 3064 wrote to memory of 5384	3064	t98WFZ1.exe	95
PID 3064 wrote to memory of 4328	3064	t98WFZ1.exe	98
PID 3064 wrote to memory of 4328	3064	t98WFZ1.exe	98
PID 3064 wrote to memory of 4008	3064	t98WFZ1.exe	100
PID 3064 wrote to memory of 4008	3064	t98WFZ1.exe	100
PID 4244 wrote to memory of 1456	4244	cmd.exe	104
PID 4244 wrote to memory of 1456	4244	cmd.exe	104

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\quarantine\t98WFZ1.exe
"C:\Users\Admin\AppData\Local\Temp\quarantine\t98WFZ1.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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\Local\Temp\quarantine\t98WFZ1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3920
- 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\'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2992
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 't98WFZ1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4904
- 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\$77Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5384
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4328
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77Steam" /tr "C:\Users\Admin\AppData\Local\$77Steam.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4008

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Users\Admin\AppData\Local\$77Steam.exe
  C:\Users\Admin\AppData\Local\$77Steam.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1456

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3568

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5200

Network

MITRE ATT&CK Enterprise v16

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\$77Steam.exe

Filesize
84KB

MD5
46fa2acd78224bd6a0b19d075efd78c2

SHA1
2ded48b4e7322c95a94c4a0a32cd55dcdb7f2fdf

SHA256
f87b5cf691fe69fcad610d5af5d75d119395024580bd7b5a064f8f0399f8903e

SHA512
c2690f4e94aca14ff2ce18aed4451ec212d9010780e2c70714b73b6bf3d8b2409fde38ac000a9d3c9db861b926f4ba48cfde1c0590c8ffa626f539ae321affa8

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77Steam.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
a1a5cd54a073fcc6f996c5bf8eae9ab4

SHA1
f51b3b1fe5ec1ace8641c99d2769a0f9f93f640f

SHA256
d0cc04ed0b546b1d7f405da38b5c1addd1fbc26591027e76b9745a9c1daf584e

SHA512
6804bc8a338f7727396b107ee58e418dae2c086aa85c8edb4d4a90f7398963dc63bab06574ed8b3c593e76d7740ecacec63d1643c6f26058a5d947caafb7673c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
ef647504cf229a16d02de14a16241b90

SHA1
81480caca469857eb93c75d494828b81e124fda0

SHA256
47002672443e80410e55a0b6d683573ac27d70d803b57ee3c2818d1008669710

SHA512
a6d8c08c708eee6f7e700880ce79d2ba7cd0acbe8529d96e18f3e90ea1f3cf33fd801dd6eba6017cdd02769e968c48278c090c1deeac710124f79423cd862ee1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
29af8a435901d77d6c0a08e494fdd160

SHA1
00ee17be16d2fccd668977caab81546ddceffc5d

SHA256
8774b8e4d75d6815a0d211272e983b0094a7542d1df584f9fc880aa68283a98f

SHA512
7d3e78f5d6d73bbb37ec7ff5b97729a1e542ae6b86eb271516a02ec67eb012872337e57a418a3f7f1b1b8cfafc2bfb246f15b75eaf45ee36fc690d946d873c99

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yksnid10.rlp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3064-0-0x00007FFC466D3000-0x00007FFC466D5000-memory.dmp

Filesize
8KB

Download
memory/3064-2-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download
memory/3064-74-0x00007FFC466D3000-0x00007FFC466D5000-memory.dmp

Filesize
8KB

Download
memory/3064-75-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download
memory/3064-1-0x00000000009C0000-0x00000000009DC000-memory.dmp

Filesize
112KB

Download
memory/3920-18-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download
memory/3920-14-0x000002A83D510000-0x000002A83D532000-memory.dmp

Filesize
136KB

Download
memory/3920-15-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download
memory/3920-13-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download
memory/3920-3-0x00007FFC466D0000-0x00007FFC47191000-memory.dmp

Filesize
10.8MB

Download