xworm | 77047b904717fdd6f280cb57d5707c35a9d4ff6e85087b2e19e5965cd1dd2967

Analysis

max time kernel
147s
max time network
138s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
31-12-2024 18:07

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General

Target

Steam.exe
Size

333KB
MD5

b15941b7edb0a49db4c1a58c9ee1019d
SHA1

179f337350d990e4329f3700d65fbecadcc9e326
SHA256

77047b904717fdd6f280cb57d5707c35a9d4ff6e85087b2e19e5965cd1dd2967
SHA512

bee9e86cf7f9a97fbb489b695f259b23f1242621a39d3461a7967b2e37cf00c2eae2d4f94b3c108dd12e530bca24d90b377a4a4f62f4dae855fc9f285b4b6464
SSDEEP

6144:PwMbfBGh7p+Y+GIIIIIIIhIIIIIIIIIIIIIIIU:PwbQ7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:4546

photos-perth.gl.at.ply.gg 127.0.0.1:4546:4546

Attributes

Install_directory
%AppData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3236-1-0x0000000000E50000-0x0000000000EAA000-memory.dmp	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
872	powershell.exe
1152	powershell.exe
4268	powershell.exe
4504	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-1-5-21-3829776853-2076861744-2973657197-1000\Control Panel\International\Geo\Nation	Steam.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	Steam.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	Steam.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-1-5-21-3829776853-2076861744-2973657197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	Steam.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
872	powershell.exe
872	powershell.exe
1152	powershell.exe
1152	powershell.exe
4268	powershell.exe
4268	powershell.exe
4504	powershell.exe
4504	powershell.exe
3236	Steam.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3236	Steam.exe
Token: SeDebugPrivilege	872	powershell.exe
Token: SeIncreaseQuotaPrivilege	872	powershell.exe
Token: SeSecurityPrivilege	872	powershell.exe
Token: SeTakeOwnershipPrivilege	872	powershell.exe
Token: SeLoadDriverPrivilege	872	powershell.exe
Token: SeSystemProfilePrivilege	872	powershell.exe
Token: SeSystemtimePrivilege	872	powershell.exe
Token: SeProfSingleProcessPrivilege	872	powershell.exe
Token: SeIncBasePriorityPrivilege	872	powershell.exe
Token: SeCreatePagefilePrivilege	872	powershell.exe
Token: SeBackupPrivilege	872	powershell.exe
Token: SeRestorePrivilege	872	powershell.exe
Token: SeShutdownPrivilege	872	powershell.exe
Token: SeDebugPrivilege	872	powershell.exe
Token: SeSystemEnvironmentPrivilege	872	powershell.exe
Token: SeRemoteShutdownPrivilege	872	powershell.exe
Token: SeUndockPrivilege	872	powershell.exe
Token: SeManageVolumePrivilege	872	powershell.exe
Token: 33	872	powershell.exe
Token: 34	872	powershell.exe
Token: 35	872	powershell.exe
Token: 36	872	powershell.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeIncreaseQuotaPrivilege	1152	powershell.exe
Token: SeSecurityPrivilege	1152	powershell.exe
Token: SeTakeOwnershipPrivilege	1152	powershell.exe
Token: SeLoadDriverPrivilege	1152	powershell.exe
Token: SeSystemProfilePrivilege	1152	powershell.exe
Token: SeSystemtimePrivilege	1152	powershell.exe
Token: SeProfSingleProcessPrivilege	1152	powershell.exe
Token: SeIncBasePriorityPrivilege	1152	powershell.exe
Token: SeCreatePagefilePrivilege	1152	powershell.exe
Token: SeBackupPrivilege	1152	powershell.exe
Token: SeRestorePrivilege	1152	powershell.exe
Token: SeShutdownPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeSystemEnvironmentPrivilege	1152	powershell.exe
Token: SeRemoteShutdownPrivilege	1152	powershell.exe
Token: SeUndockPrivilege	1152	powershell.exe
Token: SeManageVolumePrivilege	1152	powershell.exe
Token: 33	1152	powershell.exe
Token: 34	1152	powershell.exe
Token: 35	1152	powershell.exe
Token: 36	1152	powershell.exe
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeIncreaseQuotaPrivilege	4268	powershell.exe
Token: SeSecurityPrivilege	4268	powershell.exe
Token: SeTakeOwnershipPrivilege	4268	powershell.exe
Token: SeLoadDriverPrivilege	4268	powershell.exe
Token: SeSystemProfilePrivilege	4268	powershell.exe
Token: SeSystemtimePrivilege	4268	powershell.exe
Token: SeProfSingleProcessPrivilege	4268	powershell.exe
Token: SeIncBasePriorityPrivilege	4268	powershell.exe
Token: SeCreatePagefilePrivilege	4268	powershell.exe
Token: SeBackupPrivilege	4268	powershell.exe
Token: SeRestorePrivilege	4268	powershell.exe
Token: SeShutdownPrivilege	4268	powershell.exe
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeSystemEnvironmentPrivilege	4268	powershell.exe
Token: SeRemoteShutdownPrivilege	4268	powershell.exe
Token: SeUndockPrivilege	4268	powershell.exe
Token: SeManageVolumePrivilege	4268	powershell.exe
Token: 33	4268	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3236	Steam.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3236 wrote to memory of 872	3236	Steam.exe	84
PID 3236 wrote to memory of 872	3236	Steam.exe	84
PID 3236 wrote to memory of 1152	3236	Steam.exe	89
PID 3236 wrote to memory of 1152	3236	Steam.exe	89
PID 3236 wrote to memory of 4268	3236	Steam.exe	91
PID 3236 wrote to memory of 4268	3236	Steam.exe	91
PID 3236 wrote to memory of 4504	3236	Steam.exe	93
PID 3236 wrote to memory of 4504	3236	Steam.exe	93

C:\Users\Admin\AppData\Local\Temp\Steam.exe
"C:\Users\Admin\AppData\Local\Temp\Steam.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:3236
- 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\Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:872
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1152
- 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\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4268
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\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
29d056d9bc9b4ec73b3c65ff2ab3de06

SHA1
dc003908eba5553852886f062ad1c37072e2ffe1

SHA256
65290526acdf94c202c88fe590659e4358495e3ad18040f6a380aae80bec3044

SHA512
f24d3803b7acbbc627655ce4ea0bf3f3f8a33ce094555688e0ff09192625c068af34cb5694dc00b7f0b9ec1d00dcc060c2df03f967bc5cdb7e3b53c69c7ef326

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

Filesize
1KB

MD5
273760112f1f2e60426631713dc50319

SHA1
3c1e9b5b5a7934720ae53ef6e844387860dd1e51

SHA256
057dc9b8f7c35b6fb55f8a2618fb75057ada88a95629c4414ed67e9fc2542247

SHA512
17d5f6244bf7e892b9b22c3ed72d44cc794e630e075038ea51c3e680298fb7110937416c741bd114431386eafa4fa41d8cec6b66515ca43b9ddf4d57cf0c5317

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3xiozgcx.jrz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/872-12-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-14-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-15-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-16-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-19-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-13-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/872-7-0x0000028FB4670000-0x0000028FB4692000-memory.dmp

Filesize
136KB

Download
memory/3236-0-0x00007FFE2A7E3000-0x00007FFE2A7E5000-memory.dmp

Filesize
8KB

Download
memory/3236-1-0x0000000000E50000-0x0000000000EAA000-memory.dmp

Filesize
360KB

Download
memory/3236-58-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download
memory/3236-59-0x00007FFE2A7E3000-0x00007FFE2A7E5000-memory.dmp

Filesize
8KB

Download
memory/3236-60-0x00007FFE2A7E0000-0x00007FFE2B2A2000-memory.dmp

Filesize
10.8MB

Download