xworm | 22f802dad03ce14bec556b441955def133bf22dd04e42e247390c418f1c7be4a

Analysis

max time kernel
299s
max time network
277s
platform
windows11-21h2_x64
resource
win11-20240704-en
resource tags

arch:x64arch:x86image:win11-20240704-enlocale:en-usos:windows11-21h2-x64system
submitted
09/07/2024, 08:42

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General

Target

noratnik.exe
Size

208KB
MD5

7923c75699529f65b63ba064c9f512f6
SHA1

f61cece0e51c1119a30e0f05a99dd6e141853388
SHA256

22f802dad03ce14bec556b441955def133bf22dd04e42e247390c418f1c7be4a
SHA512

21a28a417f3d6c43f86cc4d2251eb8712685b6654b27475541f84ea9e8851fa3b3eb48449fa4df6a757753bbfe3d97970b831b1975b01c7104d33bbd70b8e21c
SSDEEP

3072:BmAwnYqFn98ZOua8SKfbzxcwg7es6/Vsb8VKTup49oJMfF/H9N3Ky9NzLn3:BmxnYsn9nUhcX7elbKTuq9bfF/H9d9n

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

GOBm8p0NnvNTIR9x

Attributes

Install_directory
%Userprofile%
install_file
system.exe
pastebin_url
https://pastebin.com/raw/H3wFXmEi

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3212-1-0x0000000000A90000-0x0000000000ACA000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
4792	powershell.exe
3136	powershell.exe
792	powershell.exe
4560	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.lnk	noratnik.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.lnk	noratnik.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-1-5-21-3119450053-3073099215-1938054741-1000\Software\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\system.exe"	noratnik.exe

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

Web Service

T1102

flow	ioc
1	pastebin.com
2	pastebin.com

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Panther\UnattendGC\setupact.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	UserOOBEBroker.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3119450053-3073099215-1938054741-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe

Suspicious behavior: EnumeratesProcesses 63 IoCs

pid	Process
3136	powershell.exe
3136	powershell.exe
792	powershell.exe
792	powershell.exe
4560	powershell.exe
4560	powershell.exe
4792	powershell.exe
4792	powershell.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe
3212	noratnik.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3212	noratnik.exe
Token: SeDebugPrivilege	3136	powershell.exe
Token: SeDebugPrivilege	792	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	4792	powershell.exe
Token: SeDebugPrivilege	3212	noratnik.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3212	noratnik.exe
4076	MiniSearchHost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3212 wrote to memory of 3136	3212	noratnik.exe	78
PID 3212 wrote to memory of 3136	3212	noratnik.exe	78
PID 3212 wrote to memory of 792	3212	noratnik.exe	80
PID 3212 wrote to memory of 792	3212	noratnik.exe	80
PID 3212 wrote to memory of 4560	3212	noratnik.exe	82
PID 3212 wrote to memory of 4560	3212	noratnik.exe	82
PID 3212 wrote to memory of 4792	3212	noratnik.exe	84
PID 3212 wrote to memory of 4792	3212	noratnik.exe	84

C:\Users\Admin\AppData\Local\Temp\noratnik.exe
"C:\Users\Admin\AppData\Local\Temp\noratnik.exe"
1⤵
- 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:3212
- 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\noratnik.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3136
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'noratnik.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\system.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4560
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'system.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4792

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:4532

C:\Windows\System32\oobe\UserOOBEBroker.exe
C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
1⤵
- Drops file in Windows directory
PID:1372

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
PID:1168

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4076

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

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\powershell.exe.log

Filesize
2KB

MD5
5ba388a6597d5e09191c2c88d2fdf598

SHA1
13516f8ec5a99298f6952438055c39330feae5d8

SHA256
e6b6223094e8fc598ad12b3849e49f03a141ccd21e0eaa336f81791ad8443eca

SHA512
ead2a2b5a1c2fad70c1cf570b2c9bfcb7364dd9f257a834eb819e55b8fee78e3f191f93044f07d51c259ca77a90ee8530f9204cbae080fba1d5705e1209f5b19

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

Filesize
944B

MD5
ca6377e0364987a60026b50b7d16c5db

SHA1
fe51dafbb7f6e6fb5b22152326e34b0ef8f339ec

SHA256
d51c75942569d68f771f14ad589a6b3a33eda85a99025e812b47abcd96bcc033

SHA512
017def6386f99dbd0fa8ed7c0192c4f781c4b8dbb6ae2c53f66119d1378a1caf3970ec8cc4215eb3aa142644d44a027f6b3803c3c041122be4cbaf737e2ecacc

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

Filesize
944B

MD5
d9fe75ae4e4c756199c5a679047e071d

SHA1
c9d380f0c5e5f43ddccf4182a476d0bd9ffbf340

SHA256
612ad7573cdb7beee36bea28c8d64fe89b3e78ca32c17215d166db2ec604a46c

SHA512
eb13e9008eb73382b01920fc39ac8891d29638084561b1ff12018de3b46d429a9ec8f54762ca9c242bc6d1a9119019099b3653a7120f99a956a7d8ee5ecc708a

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

Filesize
944B

MD5
05c6846bbca7b01c6f834b5f37da43b7

SHA1
e88c19451c20bb658df2ad4e14a21d2290e28f9b

SHA256
75fab4b59d3340da36c26678b271939175aed633c3f988f5f44c5634a4f0fff3

SHA512
48091404c6136e24aaf9488592d935ec0a4a40997a549aacec96c58ff49ee4c1262eabd354dbd194f3bbaa565d23165499ca22293fda4d0b3c7a6f5e87cc7783

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
10KB

MD5
00d55e92419b7a500fac6fbff94aeab6

SHA1
85c20b3b1230158f73d1da99f8cb539bd0f1b1bd

SHA256
4fb34ca1daed6bd2f358a2529dfe2d60c546c4c1bda5e9a7c61a65418f76d321

SHA512
cefb98597ece4f6f8802dca0c16fcc8812e523dcb7853ff15888ea125b87e3ae1436de10cd9c23e9bd3a5ce236273b6d9b07824bcb51432ae94708587810c521

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2vkekfyr.5rd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3136-11-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3136-14-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3136-17-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3136-13-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3136-12-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3136-10-0x000001A020360000-0x000001A020382000-memory.dmp

Filesize
136KB

Download
memory/3212-0-0x00007FF9E7F73000-0x00007FF9E7F75000-memory.dmp

Filesize
8KB

Download
memory/3212-53-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3212-54-0x00007FF9E7F70000-0x00007FF9E8A32000-memory.dmp

Filesize
10.8MB

Download
memory/3212-1-0x0000000000A90000-0x0000000000ACA000-memory.dmp

Filesize
232KB

Download