xworm | c6ee0fd2b511f01ced2be0cd78d5751886e2f1540d39981238ca3d48cd750bca

General

Target

OOKetNUn.exe
Size

69KB
MD5

5181770cbed31b900c8af62fd4239dd4
SHA1

a60ecfce32371fe5bf5ace4f6d85da2c2075738e
SHA256

6fcde9493755059859d02694b87be5a0c22e34402604c599a405cb81641a32c8
SHA512

62bf6dbf4e9bcc98978371b8d0d8fe0bf66c7ffa9fbb4a20d948bd85d30da98dbd7bfb496abe5882857232af83fa404bc8c6e0f1cacbe3fba11a7a734dbff292
SSDEEP

1536:SXEBFv+KnZS1fhCte+bQWRjg6ETKZOWbhQu4:ZnU15CQ+bQij+TKZOWbh74

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:2501

local-josh.gl.at.ply.gg:2501

Attributes

Install_directory
%AppData%
install_file
Expencive.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1064-1-0x0000000000D80000-0x0000000000D98000-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
3852	powershell.exe
2160	powershell.exe
1700	powershell.exe
2412	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	OOKetNUn.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Expencive.lnk	OOKetNUn.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Expencive.lnk	OOKetNUn.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Expencive = "C:\\Users\\Admin\\AppData\\Roaming\\Expencive.exe"	OOKetNUn.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
3852	powershell.exe
3852	powershell.exe
2160	powershell.exe
2160	powershell.exe
1700	powershell.exe
1700	powershell.exe
2412	powershell.exe
2412	powershell.exe
1064	OOKetNUn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	OOKetNUn.exe
Token: SeDebugPrivilege	3852	powershell.exe
Token: SeDebugPrivilege	2160	powershell.exe
Token: SeDebugPrivilege	1700	powershell.exe
Token: SeDebugPrivilege	2412	powershell.exe
Token: SeDebugPrivilege	1064	OOKetNUn.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1064	OOKetNUn.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 3852	1064	OOKetNUn.exe	82
PID 1064 wrote to memory of 3852	1064	OOKetNUn.exe	82
PID 1064 wrote to memory of 2160	1064	OOKetNUn.exe	84
PID 1064 wrote to memory of 2160	1064	OOKetNUn.exe	84
PID 1064 wrote to memory of 1700	1064	OOKetNUn.exe	86
PID 1064 wrote to memory of 1700	1064	OOKetNUn.exe	86
PID 1064 wrote to memory of 2412	1064	OOKetNUn.exe	88
PID 1064 wrote to memory of 2412	1064	OOKetNUn.exe	88

C:\Users\Admin\AppData\Local\Temp\OOKetNUn.exe
"C:\Users\Admin\AppData\Local\Temp\OOKetNUn.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:1064
- 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\OOKetNUn.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3852
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'OOKetNUn.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2160
- 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\Expencive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1700
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expencive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
3a6bad9528f8e23fb5c77fbd81fa28e8

SHA1
f127317c3bc6407f536c0f0600dcbcf1aabfba36

SHA256
986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

SHA512
846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_q0pcwa0r.0vw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1064-0-0x00007FFBFB083000-0x00007FFBFB085000-memory.dmp

Filesize
8KB

Download
memory/1064-1-0x0000000000D80000-0x0000000000D98000-memory.dmp

Filesize
96KB

Download
memory/1064-56-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/1064-57-0x00007FFBFB083000-0x00007FFBFB085000-memory.dmp

Filesize
8KB

Download
memory/1064-58-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/3852-13-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/3852-14-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/3852-17-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/3852-12-0x00007FFBFB080000-0x00007FFBFBB41000-memory.dmp

Filesize
10.8MB

Download
memory/3852-2-0x0000016160910000-0x0000016160932000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads