xworm | b7a2def2630cbbca20d06f0d40ceaf00f8df471adb12f62efbeb513681cf4878

Analysis

max time kernel
150s
max time network
151s
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, 23:26

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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
behavioral32/memory/4828-1-0x0000000000440000-0x000000000045C000-memory.dmp	family_xworm
behavioral32/files/0x001f00000002b137-69.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
2140	powershell.exe
468	powershell.exe
4564	powershell.exe
1612	powershell.exe
4584	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2124	$77Steam.exe
5712	$77Steam.exe
6044	$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-1-5-21-2211465213-323295031-1970282057-1000\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
1800	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4828	t98WFZ1.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2140	powershell.exe
2140	powershell.exe
468	powershell.exe
468	powershell.exe
4564	powershell.exe
4564	powershell.exe
1612	powershell.exe
1612	powershell.exe
4584	powershell.exe
4584	powershell.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	4828	t98WFZ1.exe
Token: SeDebugPrivilege	2140	powershell.exe
Token: SeDebugPrivilege	468	powershell.exe
Token: SeDebugPrivilege	4564	powershell.exe
Token: SeDebugPrivilege	1612	powershell.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeIncBasePriorityPrivilege	4828	t98WFZ1.exe
Token: SeDebugPrivilege	4828	t98WFZ1.exe
Token: SeDebugPrivilege	2124	$77Steam.exe
Token: SeDebugPrivilege	5712	$77Steam.exe
Token: SeDebugPrivilege	6044	$77Steam.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 2140	4828	t98WFZ1.exe	85
PID 4828 wrote to memory of 2140	4828	t98WFZ1.exe	85
PID 4828 wrote to memory of 468	4828	t98WFZ1.exe	87
PID 4828 wrote to memory of 468	4828	t98WFZ1.exe	87
PID 4828 wrote to memory of 4564	4828	t98WFZ1.exe	89
PID 4828 wrote to memory of 4564	4828	t98WFZ1.exe	89
PID 4828 wrote to memory of 1612	4828	t98WFZ1.exe	91
PID 4828 wrote to memory of 1612	4828	t98WFZ1.exe	91
PID 4828 wrote to memory of 4584	4828	t98WFZ1.exe	93
PID 4828 wrote to memory of 4584	4828	t98WFZ1.exe	93
PID 4828 wrote to memory of 1800	4828	t98WFZ1.exe	95
PID 4828 wrote to memory of 1800	4828	t98WFZ1.exe	95
PID 5308 wrote to memory of 2124	5308	cmd.exe	99
PID 5308 wrote to memory of 2124	5308	cmd.exe	99

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:4828
- 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:2140
- 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:468
- 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:4564
- 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:1612
- 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:4584
- 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:1800

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:5308
- C:\Users\Admin\AppData\Local\$77Steam.exe
  C:\Users\Admin\AppData\Local\$77Steam.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2124

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5712

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:6044

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
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
050567a067ffea4eb40fe2eefebdc1ee

SHA1
6e1fb2c7a7976e0724c532449e97722787a00fec

SHA256
3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e

SHA512
341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259

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

Filesize
944B

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

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

Filesize
944B

MD5
49c39329e38937c8e27f09fadb70c0f7

SHA1
958c29d3bbb82b4c85162e70d0a96d8c6f389283

SHA256
1a6a068d88a05119fc303cb10a417b655b243a1a3d9f89461aa51d97b9f99206

SHA512
1405b839ad6be92d81004c736592df210e97f44dbb4f0c63779370eabb1a04d8c663eb55c3de3f189e34d35446c08809af7555c881a86fd3b85fcdf544a8cbd1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sxpmooy2.gxn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2140-13-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/2140-16-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/2140-19-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/2140-15-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/2140-14-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/2140-12-0x0000024870AB0000-0x0000024870AD2000-memory.dmp

Filesize
136KB

Download
memory/2140-3-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/4828-0-0x00007FF8E0013000-0x00007FF8E0015000-memory.dmp

Filesize
8KB

Download
memory/4828-2-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/4828-71-0x00007FF8E0013000-0x00007FF8E0015000-memory.dmp

Filesize
8KB

Download
memory/4828-72-0x00007FF8E0010000-0x00007FF8E0AD2000-memory.dmp

Filesize
10.8MB

Download
memory/4828-1-0x0000000000440000-0x000000000045C000-memory.dmp

Filesize
112KB

Download