xworm | 6769f3dcde3cc9f6fb8fd1fb6a37b52221ef79b97d5d4002c44308da7a24b144

Analysis

max time kernel
875s
max time network
893s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
21-12-2024 12:51

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General

Target

Nursultan Alpha/workspace/nur.exe
Size

78KB
MD5

1ac8c816761e434a1f2f57fd6b1ff2ce
SHA1

ea93e41e41697445fb0e9d87e22c39f92574a256
SHA256

a3ad9f1252629d998935892cbf29d6678f5bf12244cc1687d7bbde4bb6f9855d
SHA512

08008e9b57b3e0bff46b82098bbb85bfe78ecf9b0d0062956b31724e29376910d5ead41179864975ab233998c8cf9c6402f21bbd0928496bf1c3270ee99d7a8c
SSDEEP

1536:gBMjqMnGJcI9Nkl92+TJ34TO6X+bEwZfvG/Ke6VJXRQmLOVrCgVxcpum:g+qMEZPo4TO6X+bEnCFJXqcOVrCgun

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

22.ip.gl.ply.gg:61996

Attributes

Install_directory
%ProgramData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot6997638498:AAHa9TMLloZsFrAsEGC8rfuzrK0fiaQAI5Q/sendMessage?chat_id=1031836490

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral18/memory/252-1-0x0000000000700000-0x000000000071A000-memory.dmp	family_xworm
behavioral18/files/0x002c000000046260-59.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
1248	powershell.exe
1756	powershell.exe
4448	powershell.exe
1172	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-1-5-21-2062871678-1047416116-518495306-1000\Control Panel\International\Geo\Nation	nur.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 15 IoCs

pid	Process
3644	svchost.exe
1072	svchost.exe
1672	svchost.exe
1848	svchost.exe
3764	svchost.exe
4396	svchost.exe
2272	svchost.exe
4576	svchost.exe
2572	svchost.exe
2904	svchost.exe
1688	svchost.exe
1592	svchost.exe
3664	svchost.exe
548	svchost.exe
1972	svchost.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-1-5-21-2062871678-1047416116-518495306-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe"	nur.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
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1248	powershell.exe
1248	powershell.exe
1756	powershell.exe
1756	powershell.exe
4448	powershell.exe
4448	powershell.exe
1172	powershell.exe
1172	powershell.exe
252	nur.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	252	nur.exe
Token: SeDebugPrivilege	1248	powershell.exe
Token: SeIncreaseQuotaPrivilege	1248	powershell.exe
Token: SeSecurityPrivilege	1248	powershell.exe
Token: SeTakeOwnershipPrivilege	1248	powershell.exe
Token: SeLoadDriverPrivilege	1248	powershell.exe
Token: SeSystemProfilePrivilege	1248	powershell.exe
Token: SeSystemtimePrivilege	1248	powershell.exe
Token: SeProfSingleProcessPrivilege	1248	powershell.exe
Token: SeIncBasePriorityPrivilege	1248	powershell.exe
Token: SeCreatePagefilePrivilege	1248	powershell.exe
Token: SeBackupPrivilege	1248	powershell.exe
Token: SeRestorePrivilege	1248	powershell.exe
Token: SeShutdownPrivilege	1248	powershell.exe
Token: SeDebugPrivilege	1248	powershell.exe
Token: SeSystemEnvironmentPrivilege	1248	powershell.exe
Token: SeRemoteShutdownPrivilege	1248	powershell.exe
Token: SeUndockPrivilege	1248	powershell.exe
Token: SeManageVolumePrivilege	1248	powershell.exe
Token: 33	1248	powershell.exe
Token: 34	1248	powershell.exe
Token: 35	1248	powershell.exe
Token: 36	1248	powershell.exe
Token: SeDebugPrivilege	1756	powershell.exe
Token: SeIncreaseQuotaPrivilege	1756	powershell.exe
Token: SeSecurityPrivilege	1756	powershell.exe
Token: SeTakeOwnershipPrivilege	1756	powershell.exe
Token: SeLoadDriverPrivilege	1756	powershell.exe
Token: SeSystemProfilePrivilege	1756	powershell.exe
Token: SeSystemtimePrivilege	1756	powershell.exe
Token: SeProfSingleProcessPrivilege	1756	powershell.exe
Token: SeIncBasePriorityPrivilege	1756	powershell.exe
Token: SeCreatePagefilePrivilege	1756	powershell.exe
Token: SeBackupPrivilege	1756	powershell.exe
Token: SeRestorePrivilege	1756	powershell.exe
Token: SeShutdownPrivilege	1756	powershell.exe
Token: SeDebugPrivilege	1756	powershell.exe
Token: SeSystemEnvironmentPrivilege	1756	powershell.exe
Token: SeRemoteShutdownPrivilege	1756	powershell.exe
Token: SeUndockPrivilege	1756	powershell.exe
Token: SeManageVolumePrivilege	1756	powershell.exe
Token: 33	1756	powershell.exe
Token: 34	1756	powershell.exe
Token: 35	1756	powershell.exe
Token: 36	1756	powershell.exe
Token: SeDebugPrivilege	4448	powershell.exe
Token: SeIncreaseQuotaPrivilege	4448	powershell.exe
Token: SeSecurityPrivilege	4448	powershell.exe
Token: SeTakeOwnershipPrivilege	4448	powershell.exe
Token: SeLoadDriverPrivilege	4448	powershell.exe
Token: SeSystemProfilePrivilege	4448	powershell.exe
Token: SeSystemtimePrivilege	4448	powershell.exe
Token: SeProfSingleProcessPrivilege	4448	powershell.exe
Token: SeIncBasePriorityPrivilege	4448	powershell.exe
Token: SeCreatePagefilePrivilege	4448	powershell.exe
Token: SeBackupPrivilege	4448	powershell.exe
Token: SeRestorePrivilege	4448	powershell.exe
Token: SeShutdownPrivilege	4448	powershell.exe
Token: SeDebugPrivilege	4448	powershell.exe
Token: SeSystemEnvironmentPrivilege	4448	powershell.exe
Token: SeRemoteShutdownPrivilege	4448	powershell.exe
Token: SeUndockPrivilege	4448	powershell.exe
Token: SeManageVolumePrivilege	4448	powershell.exe
Token: 33	4448	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
252	nur.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 252 wrote to memory of 1248	252	nur.exe	85
PID 252 wrote to memory of 1248	252	nur.exe	85
PID 252 wrote to memory of 1756	252	nur.exe	90
PID 252 wrote to memory of 1756	252	nur.exe	90
PID 252 wrote to memory of 4448	252	nur.exe	92
PID 252 wrote to memory of 4448	252	nur.exe	92
PID 252 wrote to memory of 1172	252	nur.exe	94
PID 252 wrote to memory of 1172	252	nur.exe	94
PID 252 wrote to memory of 1036	252	nur.exe	97
PID 252 wrote to memory of 1036	252	nur.exe	97

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\Nursultan Alpha\workspace\nur.exe
"C:\Users\Admin\AppData\Local\Temp\Nursultan Alpha\workspace\nur.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:252
- 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\Nursultan Alpha\workspace\nur.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1248
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'nur.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4448
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1172
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1036

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:3644

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1072

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1672

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1848

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:3764

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:4396

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:2272

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:4576

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:2572

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:2904

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1688

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1592

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:3664

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:548

C:\ProgramData\svchost.exe
"C:\ProgramData\svchost.exe"
1⤵
- Executes dropped EXE
PID:1972

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

Replay Monitor

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Downloads

C:\ProgramData\svchost.exe

Filesize
78KB

MD5
1ac8c816761e434a1f2f57fd6b1ff2ce

SHA1
ea93e41e41697445fb0e9d87e22c39f92574a256

SHA256
a3ad9f1252629d998935892cbf29d6678f5bf12244cc1687d7bbde4bb6f9855d

SHA512
08008e9b57b3e0bff46b82098bbb85bfe78ecf9b0d0062956b31724e29376910d5ead41179864975ab233998c8cf9c6402f21bbd0928496bf1c3270ee99d7a8c

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\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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

Filesize
1KB

MD5
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

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

Filesize
1KB

MD5
243dda9c740d56e641ae50dc3309c9da

SHA1
7138b92fb7fc096920f51469a2dc3337d83f0e86

SHA256
65c40d2fea6b8f9e4732d73a709d3624be97e4a5da8b337bee5fad1738d6d691

SHA512
3afc9211a795fc59c1e4e6dea86ffd4ae065508726c3eec02df1e20751946e41397ad29d303c51076d920c8a73398ff84e62f23ecf97441640ffd00fc4cdf3ef

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

Filesize
1KB

MD5
21cc145872acd77f950c7a81b744679d

SHA1
5b9c9a2a76fdc76e613dd8336b06b4c60cdd4ebc

SHA256
702856565b0509fc6be507d1f055d35ae4903eb08e159720c4dc0e8edac37438

SHA512
61564d625e194809e156c8084a9f11180a6ebf50e5d0166713477a06161add7c1c01a2764a1411282ad0d7f36097a1ec9a594a2ca9502b461b1dd60500ae735b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_351lw3bm.wgu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/252-1-0x0000000000700000-0x000000000071A000-memory.dmp

Filesize
104KB

Download
memory/252-0-0x00007FFE2D803000-0x00007FFE2D805000-memory.dmp

Filesize
8KB

Download
memory/252-62-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/252-58-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-12-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-19-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-16-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-15-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-14-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-13-0x00007FFE2D800000-0x00007FFE2E2C2000-memory.dmp

Filesize
10.8MB

Download
memory/1248-7-0x0000028A2D6C0000-0x0000028A2D6E2000-memory.dmp

Filesize
136KB

Download