d2100ffe58eb50c05d97a3da738ccd1f0be9672c057c26a10140af80595b78c3

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14/12/2024, 15:27

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General

Target

Gosjeufon.cpl.exe
Size

881KB
MD5

9049faba5517305c44bd5f28398fb6b9
SHA1

036c6b32f3e7d7d689c9b4d482091eebcc669bfa
SHA256

d2100ffe58eb50c05d97a3da738ccd1f0be9672c057c26a10140af80595b78c3
SHA512

65a33506f970675775468f80b94a3f8bb2d3672e6fb08fc9f2e5107020095ca6d4bca927c59b72488e2ef4208a64a56ced7511ea14c0445cd50ea3ff9b827f6a
SSDEEP

12288:I2wMm7l55+OeO+OeNhBBhhBBaELPA081o9baXpL3K+HDFgZUid4X9dCU5+Kazw4t:I2wMm7lfCIL3K+gY9dfcw4h3DX9X1

Score

10^/10

credential_access defense_evasion discovery execution impact persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\Decryptfiles.txt

Ransom Note

ATTENTION! Don't worry, you can return your files! All your files like photos, videos and other important documents are encrypted with a strong encryption algorithm and unique key. The only method of recovering files is to purchase a decrypt tool and your key. Do not try to recover your files without a decrypt tool, you may damage them making them impossible to recover we advise you contact us in less than 72 hours, otherwise there is a possibility that your files will never be returned. We will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision. Check your email 'Spam' or 'Junk' foeder if you don't get answer within 6 hours. Contact us email :[email protected] -> [email protected] Attach this file in the email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

Emails

[email protected]

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Decryptfiles.txt	Gosjeufon.cpl.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\Decryptfiles.txt	Gosjeufon.cpl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XPSUDTARW = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Gosjeufon.cpl.exe"	Gosjeufon.cpl.exe

Drops desktop.ini file(s) 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Gosjeufon.cpl.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	Gosjeufon.cpl.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Gosjeufon.cpl.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	Gosjeufon.cpl.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gosjeufon.cpl.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3492	PING.EXE
2932	cmd.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3596	NOTEPAD.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3492	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3580	Gosjeufon.cpl.exe
3580	Gosjeufon.cpl.exe
3580	Gosjeufon.cpl.exe
3580	Gosjeufon.cpl.exe
3580	Gosjeufon.cpl.exe
3580	Gosjeufon.cpl.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3580	Gosjeufon.cpl.exe
Token: SeDebugPrivilege	3580	Gosjeufon.cpl.exe
Token: SeDebugPrivilege	3580	Gosjeufon.cpl.exe
Token: SeIncreaseQuotaPrivilege	660	wmic.exe
Token: SeSecurityPrivilege	660	wmic.exe
Token: SeTakeOwnershipPrivilege	660	wmic.exe
Token: SeLoadDriverPrivilege	660	wmic.exe
Token: SeSystemProfilePrivilege	660	wmic.exe
Token: SeSystemtimePrivilege	660	wmic.exe
Token: SeProfSingleProcessPrivilege	660	wmic.exe
Token: SeIncBasePriorityPrivilege	660	wmic.exe
Token: SeCreatePagefilePrivilege	660	wmic.exe
Token: SeBackupPrivilege	660	wmic.exe
Token: SeRestorePrivilege	660	wmic.exe
Token: SeShutdownPrivilege	660	wmic.exe
Token: SeDebugPrivilege	660	wmic.exe
Token: SeSystemEnvironmentPrivilege	660	wmic.exe
Token: SeRemoteShutdownPrivilege	660	wmic.exe
Token: SeUndockPrivilege	660	wmic.exe
Token: SeManageVolumePrivilege	660	wmic.exe
Token: 33	660	wmic.exe
Token: 34	660	wmic.exe
Token: 35	660	wmic.exe
Token: 36	660	wmic.exe
Token: SeIncreaseQuotaPrivilege	660	wmic.exe
Token: SeSecurityPrivilege	660	wmic.exe
Token: SeTakeOwnershipPrivilege	660	wmic.exe
Token: SeLoadDriverPrivilege	660	wmic.exe
Token: SeSystemProfilePrivilege	660	wmic.exe
Token: SeSystemtimePrivilege	660	wmic.exe
Token: SeProfSingleProcessPrivilege	660	wmic.exe
Token: SeIncBasePriorityPrivilege	660	wmic.exe
Token: SeCreatePagefilePrivilege	660	wmic.exe
Token: SeBackupPrivilege	660	wmic.exe
Token: SeRestorePrivilege	660	wmic.exe
Token: SeShutdownPrivilege	660	wmic.exe
Token: SeDebugPrivilege	660	wmic.exe
Token: SeSystemEnvironmentPrivilege	660	wmic.exe
Token: SeRemoteShutdownPrivilege	660	wmic.exe
Token: SeUndockPrivilege	660	wmic.exe
Token: SeManageVolumePrivilege	660	wmic.exe
Token: 33	660	wmic.exe
Token: 34	660	wmic.exe
Token: 35	660	wmic.exe
Token: 36	660	wmic.exe
Token: SeBackupPrivilege	4552	vssvc.exe
Token: SeRestorePrivilege	4552	vssvc.exe
Token: SeAuditPrivilege	4552	vssvc.exe
Token: SeDebugPrivilege	3580	Gosjeufon.cpl.exe
Token: SeDebugPrivilege	3580	Gosjeufon.cpl.exe
Token: SeIncreaseQuotaPrivilege	364	wmic.exe
Token: SeSecurityPrivilege	364	wmic.exe
Token: SeTakeOwnershipPrivilege	364	wmic.exe
Token: SeLoadDriverPrivilege	364	wmic.exe
Token: SeSystemProfilePrivilege	364	wmic.exe
Token: SeSystemtimePrivilege	364	wmic.exe
Token: SeProfSingleProcessPrivilege	364	wmic.exe
Token: SeIncBasePriorityPrivilege	364	wmic.exe
Token: SeCreatePagefilePrivilege	364	wmic.exe
Token: SeBackupPrivilege	364	wmic.exe
Token: SeRestorePrivilege	364	wmic.exe
Token: SeShutdownPrivilege	364	wmic.exe
Token: SeDebugPrivilege	364	wmic.exe
Token: SeSystemEnvironmentPrivilege	364	wmic.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
952	OpenWith.exe
1508	OpenWith.exe
4320	OpenWith.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 660	3580	Gosjeufon.cpl.exe	83
PID 3580 wrote to memory of 660	3580	Gosjeufon.cpl.exe	83
PID 3580 wrote to memory of 364	3580	Gosjeufon.cpl.exe	101
PID 3580 wrote to memory of 364	3580	Gosjeufon.cpl.exe	101
PID 3580 wrote to memory of 2932	3580	Gosjeufon.cpl.exe	102
PID 3580 wrote to memory of 2932	3580	Gosjeufon.cpl.exe	102
PID 3580 wrote to memory of 2932	3580	Gosjeufon.cpl.exe	102
PID 2932 wrote to memory of 3492	2932	cmd.exe	105
PID 2932 wrote to memory of 3492	2932	cmd.exe	105
PID 2932 wrote to memory of 3492	2932	cmd.exe	105

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\Gosjeufon.cpl.exe
"C:\Users\Admin\AppData\Local\Temp\Gosjeufon.cpl.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3580
- \??\c:\Windows\system32\wbem\wmic.exe
  c:\rtcUYC\rtcU\..\..\Windows\rtcU\rtcU\..\..\system32\rtcU\rtcU\..\..\wbem\rtcU\rtcUY\..\..\wmic.exe shadowcopy delete
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:660
- \??\c:\Windows\system32\wbem\wmic.exe
  c:\iBeIwH\iBeI\..\..\Windows\iBeI\iBeI\..\..\system32\iBeI\iBeI\..\..\wbem\iBeI\iBeIw\..\..\wmic.exe shadowcopy delete
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:364
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\Gosjeufon.cpl.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Windows\SysWOW64\PING.EXE
    ping 1.1.1.1 -n 1 -w 3000
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3492

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4552

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Decryptfiles.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:3596

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:952

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1508

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

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

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Decryptfiles.txt

Filesize
4KB

MD5
954e67e4ea50724f251531189b241777

SHA1
e5152c4858d2864bcb2f648955abc7667a8eb700

SHA256
1e525e366a516bac4261ca642569d1a8c19300f7ba39b8339f5769c66a8bb053

SHA512
21cfb403afa77661c829a22603b1c7e09229884ad957cb40a00c45440f4aa29181f0bfe4102b6410768a1a86af0a1d7674854e20f36af1ee36608245f7b306a4

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