xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

Analysis

max time kernel
102s
max time network
147s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04-11-2024 16:42

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General

Target

mygame.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/memory/1516-1-0x0000000000BB0000-0x0000000000BD8000-memory.dmp	family_xworm
behavioral4/files/0x002a000000045028-61.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
824	powershell.exe
3088	powershell.exe
3408	powershell.exe
4300	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-1-5-21-1361837696-2276465416-1936241636-1000\Control Panel\International\Geo\Nation	mygame.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2628	Update.exe
3876	Update.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-1-5-21-1361837696-2276465416-1936241636-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	mygame.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
4696	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
824	powershell.exe
824	powershell.exe
3088	powershell.exe
3088	powershell.exe
3408	powershell.exe
3408	powershell.exe
4300	powershell.exe
4300	powershell.exe
1516	mygame.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	mygame.exe
Token: SeDebugPrivilege	824	powershell.exe
Token: SeIncreaseQuotaPrivilege	824	powershell.exe
Token: SeSecurityPrivilege	824	powershell.exe
Token: SeTakeOwnershipPrivilege	824	powershell.exe
Token: SeLoadDriverPrivilege	824	powershell.exe
Token: SeSystemProfilePrivilege	824	powershell.exe
Token: SeSystemtimePrivilege	824	powershell.exe
Token: SeProfSingleProcessPrivilege	824	powershell.exe
Token: SeIncBasePriorityPrivilege	824	powershell.exe
Token: SeCreatePagefilePrivilege	824	powershell.exe
Token: SeBackupPrivilege	824	powershell.exe
Token: SeRestorePrivilege	824	powershell.exe
Token: SeShutdownPrivilege	824	powershell.exe
Token: SeDebugPrivilege	824	powershell.exe
Token: SeSystemEnvironmentPrivilege	824	powershell.exe
Token: SeRemoteShutdownPrivilege	824	powershell.exe
Token: SeUndockPrivilege	824	powershell.exe
Token: SeManageVolumePrivilege	824	powershell.exe
Token: 33	824	powershell.exe
Token: 34	824	powershell.exe
Token: 35	824	powershell.exe
Token: 36	824	powershell.exe
Token: SeDebugPrivilege	3088	powershell.exe
Token: SeIncreaseQuotaPrivilege	3088	powershell.exe
Token: SeSecurityPrivilege	3088	powershell.exe
Token: SeTakeOwnershipPrivilege	3088	powershell.exe
Token: SeLoadDriverPrivilege	3088	powershell.exe
Token: SeSystemProfilePrivilege	3088	powershell.exe
Token: SeSystemtimePrivilege	3088	powershell.exe
Token: SeProfSingleProcessPrivilege	3088	powershell.exe
Token: SeIncBasePriorityPrivilege	3088	powershell.exe
Token: SeCreatePagefilePrivilege	3088	powershell.exe
Token: SeBackupPrivilege	3088	powershell.exe
Token: SeRestorePrivilege	3088	powershell.exe
Token: SeShutdownPrivilege	3088	powershell.exe
Token: SeDebugPrivilege	3088	powershell.exe
Token: SeSystemEnvironmentPrivilege	3088	powershell.exe
Token: SeRemoteShutdownPrivilege	3088	powershell.exe
Token: SeUndockPrivilege	3088	powershell.exe
Token: SeManageVolumePrivilege	3088	powershell.exe
Token: 33	3088	powershell.exe
Token: 34	3088	powershell.exe
Token: 35	3088	powershell.exe
Token: 36	3088	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeIncreaseQuotaPrivilege	3408	powershell.exe
Token: SeSecurityPrivilege	3408	powershell.exe
Token: SeTakeOwnershipPrivilege	3408	powershell.exe
Token: SeLoadDriverPrivilege	3408	powershell.exe
Token: SeSystemProfilePrivilege	3408	powershell.exe
Token: SeSystemtimePrivilege	3408	powershell.exe
Token: SeProfSingleProcessPrivilege	3408	powershell.exe
Token: SeIncBasePriorityPrivilege	3408	powershell.exe
Token: SeCreatePagefilePrivilege	3408	powershell.exe
Token: SeBackupPrivilege	3408	powershell.exe
Token: SeRestorePrivilege	3408	powershell.exe
Token: SeShutdownPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeSystemEnvironmentPrivilege	3408	powershell.exe
Token: SeRemoteShutdownPrivilege	3408	powershell.exe
Token: SeUndockPrivilege	3408	powershell.exe
Token: SeManageVolumePrivilege	3408	powershell.exe
Token: 33	3408	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1516	mygame.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 824	1516	mygame.exe	84
PID 1516 wrote to memory of 824	1516	mygame.exe	84
PID 1516 wrote to memory of 3088	1516	mygame.exe	90
PID 1516 wrote to memory of 3088	1516	mygame.exe	90
PID 1516 wrote to memory of 3408	1516	mygame.exe	93
PID 1516 wrote to memory of 3408	1516	mygame.exe	93
PID 1516 wrote to memory of 4300	1516	mygame.exe	95
PID 1516 wrote to memory of 4300	1516	mygame.exe	95
PID 1516 wrote to memory of 4696	1516	mygame.exe	98
PID 1516 wrote to memory of 4696	1516	mygame.exe	98

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\mygame.exe
"C:\Users\Admin\AppData\Local\Temp\mygame.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1516
- 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\mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:824
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3088
- 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\Roaming\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4300
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4696

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:2628

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:3876

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

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\Microsoft\CLR_v4.0\UsageLogs\Update.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
1fd58940e434973a84db008bab16a590

SHA1
fe10d162f0e8aa4f77ee4a213e38ecc5433a1601

SHA256
0587ac03553df9ad278d506c75e4e8a75ab9a2eadc37a7968662eda56f2a6fdd

SHA512
70b961a4c77e3bede7c6dec0f92699a370057169fdae2aef8aa15e5f22fd59a39eb220cff894e63e626d10cdfeef08e55874ae9cd6a055e2f358323aaa8bacf5

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

Filesize
1KB

MD5
91de49675cfe0500db92863faa8cba6d

SHA1
c06c173d2f32ba7f01196a39cae617afcd06c6ca

SHA256
0573073428a6c6007389df896497dd7d07c777e986609b39d108539d8ce72f7e

SHA512
8cf46b0706ec07f2b1b6958d22f3d3082b701fa7653bbb2848ac79a660dfb97d8e5da235f635ac2e57e89a763c43bbdaddae079d65fc9a78fbcb33aa9750ee00

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p44xiryo.nse.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Update.exe

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/824-12-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-18-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-19-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-15-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-14-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-13-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/824-2-0x0000027A3E370000-0x0000027A3E392000-memory.dmp

Filesize
136KB

Download
memory/1516-42-0x00007FF8F4623000-0x00007FF8F4625000-memory.dmp

Filesize
8KB

Download
memory/1516-0-0x00007FF8F4623000-0x00007FF8F4625000-memory.dmp

Filesize
8KB

Download
memory/1516-59-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/1516-60-0x00007FF8F4620000-0x00007FF8F50E2000-memory.dmp

Filesize
10.8MB

Download
memory/1516-1-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

Filesize
160KB

Download