xworm | b7a2def2630cbbca20d06f0d40ceaf00f8df471adb12f62efbeb513681cf4878

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-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
behavioral31/memory/3712-1-0x0000000000370000-0x000000000038C000-memory.dmp	family_xworm
behavioral31/files/0x000d00000001e697-70.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
4652	powershell.exe
2712	powershell.exe
3664	powershell.exe
6084	powershell.exe
5564	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-1-5-21-3027557611-1484967174-339164627-1000\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 4 IoCs

pid	Process
2300	$77Steam.exe
816	$77Steam.exe
1472	$77Steam.exe
1836	$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-1-5-21-3027557611-1484967174-339164627-1000\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
4	ip-api.com
5	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
5988	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3712	t98WFZ1.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4652	powershell.exe
4652	powershell.exe
2712	powershell.exe
2712	powershell.exe
3664	powershell.exe
3664	powershell.exe
6084	powershell.exe
6084	powershell.exe
5564	powershell.exe
5564	powershell.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3712	t98WFZ1.exe
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	3664	powershell.exe
Token: SeDebugPrivilege	6084	powershell.exe
Token: SeDebugPrivilege	5564	powershell.exe
Token: SeIncBasePriorityPrivilege	3712	t98WFZ1.exe
Token: SeDebugPrivilege	3712	t98WFZ1.exe
Token: SeDebugPrivilege	2300	$77Steam.exe
Token: SeDebugPrivilege	816	$77Steam.exe
Token: SeDebugPrivilege	1472	$77Steam.exe
Token: SeDebugPrivilege	1836	$77Steam.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 4652	3712	t98WFZ1.exe	86
PID 3712 wrote to memory of 4652	3712	t98WFZ1.exe	86
PID 3712 wrote to memory of 2712	3712	t98WFZ1.exe	88
PID 3712 wrote to memory of 2712	3712	t98WFZ1.exe	88
PID 3712 wrote to memory of 3664	3712	t98WFZ1.exe	91
PID 3712 wrote to memory of 3664	3712	t98WFZ1.exe	91
PID 3712 wrote to memory of 6084	3712	t98WFZ1.exe	93
PID 3712 wrote to memory of 6084	3712	t98WFZ1.exe	93
PID 3712 wrote to memory of 5564	3712	t98WFZ1.exe	95
PID 3712 wrote to memory of 5564	3712	t98WFZ1.exe	95
PID 3712 wrote to memory of 5988	3712	t98WFZ1.exe	98
PID 3712 wrote to memory of 5988	3712	t98WFZ1.exe	98
PID 3552 wrote to memory of 2300	3552	cmd.exe	102
PID 3552 wrote to memory of 2300	3552	cmd.exe	102

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:3712
- 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:4652
- 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:2712
- 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:3664
- 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:6084
- 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:5564
- 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:5988

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\$77Steam.exe
  C:\Users\Admin\AppData\Local\$77Steam.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2300

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:816

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1472

C:\Users\Admin\AppData\Local\$77Steam.exe
C:\Users\Admin\AppData\Local\$77Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1836

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
0b9ebff96ce87bb2948f7decf425a335

SHA1
3172582f4a97c15d0c5162c547fe81b811de8e74

SHA256
9e2d1f92a7985c38161bb08726c708271673b6644d66b327b72e5023a53daf2c

SHA512
4eeaf75114389ca025b6eb589c160f03ddceb2e2c67196f05cdf2da5c946c617816056265a0420dcae13c19781a291ef8c456cd08bca6760bbcdd89a83e96357

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z05bvms4.jyg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3712-1-0x0000000000370000-0x000000000038C000-memory.dmp

Filesize
112KB

Download
memory/3712-2-0x00007FFE7A180000-0x00007FFE7AC41000-memory.dmp

Filesize
10.8MB

Download
memory/3712-0-0x00007FFE7A183000-0x00007FFE7A185000-memory.dmp

Filesize
8KB

Download
memory/3712-73-0x00007FFE7A180000-0x00007FFE7AC41000-memory.dmp

Filesize
10.8MB

Download
memory/4652-3-0x00007FFE7A180000-0x00007FFE7AC41000-memory.dmp

Filesize
10.8MB

Download
memory/4652-17-0x00007FFE7A180000-0x00007FFE7AC41000-memory.dmp

Filesize
10.8MB

Download
memory/4652-5-0x000001C9C6420000-0x000001C9C6442000-memory.dmp

Filesize
136KB

Download
memory/4652-4-0x00007FFE7A180000-0x00007FFE7AC41000-memory.dmp

Filesize
10.8MB

Download