xworm | 19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45

Analysis

max time kernel
134s
max time network
151s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
14-11-2024 13:33

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General

Target

Network.exe
Size

91KB
MD5

e14da59f36f995b0a212775074e25ce7
SHA1

574ba408726a83ec63a37782cc4e0cf2f009dabd
SHA256

19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45
SHA512

6db0b5a34ca9e9e234b841cfb44bc5b5e9c3fea2585634702b8bfcf44af947e48b5c2ac4ec8d532b84b0c7c6aec6ea1b1155f5a75b7fdbe363b1eb2370c63b21
SSDEEP

1536:T+xqTU3nmojQskipBeEQPs0BoBONEX2J4wBMPjdbqYDK/z5iEcd64qLpt6x3OQ3q:TtTU3nmojQsk9PoXs4wBMBbqYU53gGtL

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
NetworkEXP.exe
pastebin_url
https://pastebin.com/raw/RgYXYwVV
telegram
https://api.telegram.org/bot6554307825:AAFiCM4YZlx7R1yb0K0d5pqenjePI2Nljfc/sendMessage?chat_id=6077384108

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3800-1-0x0000000000570000-0x000000000058E000-memory.dmp	family_xworm
behavioral2/files/0x0028000000045155-63.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
1212	powershell.exe
1296	powershell.exe
3340	powershell.exe
2340	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-1-5-21-641261377-2215826147-608237349-1000\Control Panel\International\Geo\Nation	Network.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1696	NetworkEXP.exe
1704	NetworkEXP.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-1-5-21-641261377-2215826147-608237349-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NetworkEXP = "C:\\Users\\Admin\\AppData\\Roaming\\NetworkEXP.exe"	Network.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
23	pastebin.com
22	pastebin.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
17	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
372	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3800	Network.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3340	powershell.exe
3340	powershell.exe
2340	powershell.exe
2340	powershell.exe
1212	powershell.exe
1212	powershell.exe
1296	powershell.exe
1296	powershell.exe
3800	Network.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3800	Network.exe
Token: SeDebugPrivilege	3340	powershell.exe
Token: SeIncreaseQuotaPrivilege	3340	powershell.exe
Token: SeSecurityPrivilege	3340	powershell.exe
Token: SeTakeOwnershipPrivilege	3340	powershell.exe
Token: SeLoadDriverPrivilege	3340	powershell.exe
Token: SeSystemProfilePrivilege	3340	powershell.exe
Token: SeSystemtimePrivilege	3340	powershell.exe
Token: SeProfSingleProcessPrivilege	3340	powershell.exe
Token: SeIncBasePriorityPrivilege	3340	powershell.exe
Token: SeCreatePagefilePrivilege	3340	powershell.exe
Token: SeBackupPrivilege	3340	powershell.exe
Token: SeRestorePrivilege	3340	powershell.exe
Token: SeShutdownPrivilege	3340	powershell.exe
Token: SeDebugPrivilege	3340	powershell.exe
Token: SeSystemEnvironmentPrivilege	3340	powershell.exe
Token: SeRemoteShutdownPrivilege	3340	powershell.exe
Token: SeUndockPrivilege	3340	powershell.exe
Token: SeManageVolumePrivilege	3340	powershell.exe
Token: 33	3340	powershell.exe
Token: 34	3340	powershell.exe
Token: 35	3340	powershell.exe
Token: 36	3340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeIncreaseQuotaPrivilege	2340	powershell.exe
Token: SeSecurityPrivilege	2340	powershell.exe
Token: SeTakeOwnershipPrivilege	2340	powershell.exe
Token: SeLoadDriverPrivilege	2340	powershell.exe
Token: SeSystemProfilePrivilege	2340	powershell.exe
Token: SeSystemtimePrivilege	2340	powershell.exe
Token: SeProfSingleProcessPrivilege	2340	powershell.exe
Token: SeIncBasePriorityPrivilege	2340	powershell.exe
Token: SeCreatePagefilePrivilege	2340	powershell.exe
Token: SeBackupPrivilege	2340	powershell.exe
Token: SeRestorePrivilege	2340	powershell.exe
Token: SeShutdownPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeSystemEnvironmentPrivilege	2340	powershell.exe
Token: SeRemoteShutdownPrivilege	2340	powershell.exe
Token: SeUndockPrivilege	2340	powershell.exe
Token: SeManageVolumePrivilege	2340	powershell.exe
Token: 33	2340	powershell.exe
Token: 34	2340	powershell.exe
Token: 35	2340	powershell.exe
Token: 36	2340	powershell.exe
Token: SeDebugPrivilege	1212	powershell.exe
Token: SeIncreaseQuotaPrivilege	1212	powershell.exe
Token: SeSecurityPrivilege	1212	powershell.exe
Token: SeTakeOwnershipPrivilege	1212	powershell.exe
Token: SeLoadDriverPrivilege	1212	powershell.exe
Token: SeSystemProfilePrivilege	1212	powershell.exe
Token: SeSystemtimePrivilege	1212	powershell.exe
Token: SeProfSingleProcessPrivilege	1212	powershell.exe
Token: SeIncBasePriorityPrivilege	1212	powershell.exe
Token: SeCreatePagefilePrivilege	1212	powershell.exe
Token: SeBackupPrivilege	1212	powershell.exe
Token: SeRestorePrivilege	1212	powershell.exe
Token: SeShutdownPrivilege	1212	powershell.exe
Token: SeDebugPrivilege	1212	powershell.exe
Token: SeSystemEnvironmentPrivilege	1212	powershell.exe
Token: SeRemoteShutdownPrivilege	1212	powershell.exe
Token: SeUndockPrivilege	1212	powershell.exe
Token: SeManageVolumePrivilege	1212	powershell.exe
Token: 33	1212	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3800	Network.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 3340	3800	Network.exe	86
PID 3800 wrote to memory of 3340	3800	Network.exe	86
PID 3800 wrote to memory of 2340	3800	Network.exe	90
PID 3800 wrote to memory of 2340	3800	Network.exe	90
PID 3800 wrote to memory of 1212	3800	Network.exe	92
PID 3800 wrote to memory of 1212	3800	Network.exe	92
PID 3800 wrote to memory of 1296	3800	Network.exe	94
PID 3800 wrote to memory of 1296	3800	Network.exe	94
PID 3800 wrote to memory of 372	3800	Network.exe	98
PID 3800 wrote to memory of 372	3800	Network.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\Network.exe
"C:\Users\Admin\AppData\Local\Temp\Network.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3800
- 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\Network.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3340
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Network.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2340
- 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\NetworkEXP.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1212
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NetworkEXP.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1296
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "NetworkEXP" /tr "C:\Users\Admin\AppData\Roaming\NetworkEXP.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:372

C:\Users\Admin\AppData\Roaming\NetworkEXP.exe
"C:\Users\Admin\AppData\Roaming\NetworkEXP.exe"
1⤵
- Executes dropped EXE
PID:1696

C:\Users\Admin\AppData\Roaming\NetworkEXP.exe
"C:\Users\Admin\AppData\Roaming\NetworkEXP.exe"
1⤵
- Executes dropped EXE
PID:1704

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\NetworkEXP.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
90d696d6a8ab185c1546b111fa208281

SHA1
b0ce1efde1dad3d65f7a78d1f6467d8a1090d659

SHA256
78497ed2c4ccac6e870afc80224724f45a7356bde55580a5c6ea52ef5079a3f4

SHA512
0a19628ae31ec31f382b3fd430c205a39985730e12c608b66b83ee4826e3f3fc9f4a034e03f38ac5260defdf805b927528ffca1a2ccdd59d9bfe05822923c4ba

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

Filesize
1KB

MD5
f8165bf41e73dd46eea2816320c1188d

SHA1
49529e11761e2b14201b58a8e750e06280959ad2

SHA256
8719e238a844c97a68e4926ff72fe8a63c266b15bc99cc54453d7d2915ee9e34

SHA512
c172ad79a016518ba5c44413f980d24719590849df09e657fe62fda9d848f7d1ab0f0fe1f47dd4228e471ec846d1da219eedcfdc3bfe1e304f0f8762bac13c64

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

Filesize
1KB

MD5
1ee868b30159400b6c632f0094d6f98e

SHA1
dded24c50bdae5c1673c23788cc84a9696d87f50

SHA256
b83974ed009b0cab9f519b2cb8ef3b0bd1f9d6d3e8ddd889259ccd8495651416

SHA512
f086c5a43ddfd1ecdecb375c20cb97b0cd8f679a7186f1e40c81d7579914f3a7077314e8f9bab0138ea6ff695c996131d7ba6029ed4667f899c540d470afa409

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oz4yglbn.ydi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
91KB

MD5
e14da59f36f995b0a212775074e25ce7

SHA1
574ba408726a83ec63a37782cc4e0cf2f009dabd

SHA256
19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45

SHA512
6db0b5a34ca9e9e234b841cfb44bc5b5e9c3fea2585634702b8bfcf44af947e48b5c2ac4ec8d532b84b0c7c6aec6ea1b1155f5a75b7fdbe363b1eb2370c63b21

Download Submit
memory/1212-45-0x000001D5E17C0000-0x000001D5E19DD000-memory.dmp

Filesize
2.1MB

Download
memory/2340-33-0x0000025828730000-0x000002582894D000-memory.dmp

Filesize
2.1MB

Download
memory/3340-13-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-20-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-19-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-16-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-15-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-14-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3340-12-0x000001F5B2B80000-0x000001F5B2BA2000-memory.dmp

Filesize
136KB

Download
memory/3800-0-0x00007FFB94873000-0x00007FFB94875000-memory.dmp

Filesize
8KB

Download
memory/3800-46-0x00007FFB94873000-0x00007FFB94875000-memory.dmp

Filesize
8KB

Download
memory/3800-62-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3800-2-0x00007FFB94870000-0x00007FFB95332000-memory.dmp

Filesize
10.8MB

Download
memory/3800-1-0x0000000000570000-0x000000000058E000-memory.dmp

Filesize
120KB

Download