xworm | b7a2def2630cbbca20d06f0d40ceaf00f8df471adb12f62efbeb513681cf4878

Analysis

max time kernel
146s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
15/04/2025, 23:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral32/memory/1896-1-0x00000000008D0000-0x00000000008EC000-memory.dmp	family_xworm
behavioral32/files/0x001f00000002b1c2-67.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
3932	powershell.exe
1976	powershell.exe
3564	powershell.exe
1072	powershell.exe
4016	powershell.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
5320	$77Steam.exe
3832	$77Steam.exe
2156	$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-1-5-21-2627618461-2240074273-3604016983-1000\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
1	ip-api.com
2	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
5256	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1896	t98WFZ1.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3932	powershell.exe
3932	powershell.exe
1976	powershell.exe
1976	powershell.exe
3564	powershell.exe
3564	powershell.exe
1072	powershell.exe
1072	powershell.exe
4016	powershell.exe
4016	powershell.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	t98WFZ1.exe
Token: SeDebugPrivilege	3932	powershell.exe
Token: SeDebugPrivilege	1976	powershell.exe
Token: SeDebugPrivilege	3564	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	4016	powershell.exe
Token: SeIncBasePriorityPrivilege	1896	t98WFZ1.exe
Token: SeDebugPrivilege	1896	t98WFZ1.exe
Token: SeDebugPrivilege	5320	$77Steam.exe
Token: SeDebugPrivilege	3832	$77Steam.exe
Token: SeDebugPrivilege	2156	$77Steam.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 3932	1896	t98WFZ1.exe	79
PID 1896 wrote to memory of 3932	1896	t98WFZ1.exe	79
PID 1896 wrote to memory of 1976	1896	t98WFZ1.exe	81
PID 1896 wrote to memory of 1976	1896	t98WFZ1.exe	81
PID 1896 wrote to memory of 3564	1896	t98WFZ1.exe	83
PID 1896 wrote to memory of 3564	1896	t98WFZ1.exe	83
PID 1896 wrote to memory of 1072	1896	t98WFZ1.exe	85
PID 1896 wrote to memory of 1072	1896	t98WFZ1.exe	85
PID 1896 wrote to memory of 4016	1896	t98WFZ1.exe	87
PID 1896 wrote to memory of 4016	1896	t98WFZ1.exe	87
PID 1896 wrote to memory of 5256	1896	t98WFZ1.exe	89
PID 1896 wrote to memory of 5256	1896	t98WFZ1.exe	89
PID 3624 wrote to memory of 5320	3624	cmd.exe	93
PID 3624 wrote to memory of 5320	3624	cmd.exe	93

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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- 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:3932
- 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:1976
- 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:3564
- 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:1072
- 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:4016
- 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:5256

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Users\Admin\AppData\Local\$77Steam.exe
  C:\Users\Admin\AppData\Local\$77Steam.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:5320

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3832

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2156

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

Replay Monitor

Loading Replay Monitor...

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
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
4093e5ab3812960039eba1a814c2ffb0

SHA1
b5e4a98a80be72fccd3cc910e93113d2febef298

SHA256
c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c

SHA512
f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b

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

Filesize
944B

MD5
73bdaf692cafe124e4eb5239866968e8

SHA1
3b85f5a175c3acac54244734be0fcdc73dbab945

SHA256
ae418bd7d73ace366ef61d64b0a5677d42c44722903680476e7a6c615dd01a3f

SHA512
44aabce196dc44da0421a4b97b0b3d5be0c959e5ed7652685ecd606f8706b804d432bbc0e4da280d4c4bc7914a18c95985bfe1389d3bb1858aa1f3355fa4e189

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

Filesize
944B

MD5
80b42fe4c6cf64624e6c31e5d7f2d3b3

SHA1
1f93e7dd83b86cb900810b7e3e43797868bf7d93

SHA256
ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

SHA512
83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hckcio5r.mek.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1896-71-0x00007FFAD3ED3000-0x00007FFAD3ED5000-memory.dmp

Filesize
8KB

Download
memory/1896-72-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/1896-0-0x00007FFAD3ED3000-0x00007FFAD3ED5000-memory.dmp

Filesize
8KB

Download
memory/1896-2-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/1896-1-0x00000000008D0000-0x00000000008EC000-memory.dmp

Filesize
112KB

Download
memory/3932-9-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/3932-19-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/3932-16-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/3932-15-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/3932-14-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download
memory/3932-10-0x0000014F6DF70000-0x0000014F6DF92000-memory.dmp

Filesize
136KB

Download
memory/3932-3-0x00007FFAD3ED0000-0x00007FFAD4992000-memory.dmp

Filesize
10.8MB

Download