xworm | 35e26bdbdea45ece8f73ddac192c584868bc55018cd95fcf669695c0f68260d7

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:18

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General

Target

fc0103e816984d1e97626e76a8d18d3d.exe
Size

35KB
MD5

fc0103e816984d1e97626e76a8d18d3d
SHA1

2dc01271ff1b12d7371b9b00814b352ec7fec649
SHA256

26dcef17d03bf49ee2800449e47fe58e65a1850463f5bee3ce8d8db47db97ab1
SHA512

88b9d200a949bf8b12ecc41d3020ed8c3f7bfafcf1175203ed5691eabba6c546b204f1f6f2148da168e3849be2312a295a8d118fd269c6b6855b67e7bc87e68d
SSDEEP

768:zDS4bdiN/IGd6fm5Fyw9P+6RO/hIS/g9:S4bdwBAIFP9P+6RO/yIW

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

147.185.221.27:9999

Mutex

Xb1ZZPuPdjP7zT1W

Attributes

Install_directory
%Temp%
install_file
smhost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral24/memory/440-1-0x0000000000AF0000-0x0000000000B00000-memory.dmp	family_xworm
behavioral24/files/0x000c00000001da61-57.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 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
264	powershell.exe
4972	powershell.exe
2748	powershell.exe
2808	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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	fc0103e816984d1e97626e76a8d18d3d.exe

Executes dropped EXE 3 IoCs

pid	Process
3752	smhost.exe
4844	smhost.exe
2364	smhost.exe

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
3744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
264	powershell.exe
264	powershell.exe
4972	powershell.exe
4972	powershell.exe
2748	powershell.exe
2748	powershell.exe
2808	powershell.exe
2808	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	440	fc0103e816984d1e97626e76a8d18d3d.exe
Token: SeDebugPrivilege	264	powershell.exe
Token: SeDebugPrivilege	4972	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	440	fc0103e816984d1e97626e76a8d18d3d.exe
Token: SeDebugPrivilege	3752	smhost.exe
Token: SeDebugPrivilege	4844	smhost.exe
Token: SeDebugPrivilege	2364	smhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 264	440	fc0103e816984d1e97626e76a8d18d3d.exe	91
PID 440 wrote to memory of 264	440	fc0103e816984d1e97626e76a8d18d3d.exe	91
PID 440 wrote to memory of 4972	440	fc0103e816984d1e97626e76a8d18d3d.exe	94
PID 440 wrote to memory of 4972	440	fc0103e816984d1e97626e76a8d18d3d.exe	94
PID 440 wrote to memory of 2748	440	fc0103e816984d1e97626e76a8d18d3d.exe	97
PID 440 wrote to memory of 2748	440	fc0103e816984d1e97626e76a8d18d3d.exe	97
PID 440 wrote to memory of 2808	440	fc0103e816984d1e97626e76a8d18d3d.exe	99
PID 440 wrote to memory of 2808	440	fc0103e816984d1e97626e76a8d18d3d.exe	99
PID 440 wrote to memory of 3744	440	fc0103e816984d1e97626e76a8d18d3d.exe	101
PID 440 wrote to memory of 3744	440	fc0103e816984d1e97626e76a8d18d3d.exe	101

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\fc0103e816984d1e97626e76a8d18d3d.exe
"C:\Users\Admin\AppData\Local\Temp\fc0103e816984d1e97626e76a8d18d3d.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:440
- 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\fc0103e816984d1e97626e76a8d18d3d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:264
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'fc0103e816984d1e97626e76a8d18d3d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4972
- 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\smhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'smhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2808
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "smhost" /tr "C:\Users\Admin\AppData\Local\Temp\smhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3744

C:\Users\Admin\AppData\Local\Temp\smhost.exe
C:\Users\Admin\AppData\Local\Temp\smhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3752

C:\Users\Admin\AppData\Local\Temp\smhost.exe
C:\Users\Admin\AppData\Local\Temp\smhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4844

C:\Users\Admin\AppData\Local\Temp\smhost.exe
C:\Users\Admin\AppData\Local\Temp\smhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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\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\CLR_v4.0\UsageLogs\smhost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
029fbf628b046653ab7ff10b31deeeb2

SHA1
93c2cb1905c8f5e71f5ea97a1e8a8c891eae077c

SHA256
85f6b0971e94daf9fd4e39413824f162851a9f5ce7f989bd92c903a4dbcbef26

SHA512
d4e3626dba2572bd1e53446b384962f955cc0c7e56a72cacf50a845d74714ec1020bcb0fdcc50636a1dfd4f08dc34143dbb5638dd90180df6aa31dab9228c98c

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

Filesize
944B

MD5
98baf5117c4fcec1692067d200c58ab3

SHA1
5b33a57b72141e7508b615e17fb621612cb8e390

SHA256
30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

SHA512
344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

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

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_anznciet.ww2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\smhost.exe

Filesize
35KB

MD5
fc0103e816984d1e97626e76a8d18d3d

SHA1
2dc01271ff1b12d7371b9b00814b352ec7fec649

SHA256
26dcef17d03bf49ee2800449e47fe58e65a1850463f5bee3ce8d8db47db97ab1

SHA512
88b9d200a949bf8b12ecc41d3020ed8c3f7bfafcf1175203ed5691eabba6c546b204f1f6f2148da168e3849be2312a295a8d118fd269c6b6855b67e7bc87e68d

Download Submit
memory/264-12-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/264-18-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/264-15-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/264-14-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/264-13-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/264-2-0x000001DFDDF10000-0x000001DFDDF32000-memory.dmp

Filesize
136KB

Download
memory/440-0-0x00007FFF87663000-0x00007FFF87665000-memory.dmp

Filesize
8KB

Download
memory/440-54-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/440-55-0x00007FFF87663000-0x00007FFF87665000-memory.dmp

Filesize
8KB

Download
memory/440-56-0x00007FFF87660000-0x00007FFF88121000-memory.dmp

Filesize
10.8MB

Download
memory/440-1-0x0000000000AF0000-0x0000000000B00000-memory.dmp

Filesize
64KB

Download