ransomexx_win | 562b6736cb6b1abff6a98c29059ae0f6de997d9f3137de622c92f217510519a4

General

Target

e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
Size

156KB
MD5

ca2326886fa699068c44f32b3e51adaf
SHA1

3555aaebe6c113fb8f923a38cb3bd75da6e86277
SHA256

e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162
SHA512

d7da00f22fede4909c29d5c6125f2b5749453cefa65c262133d50cf7235fc9d3b134e5b2d5740f08e8db3fc70c21de8bed42deb84a5ca31108a7968026b7ed9e

Score

10^/10

ransomexx_win evasion ransomware

Malware Config

Extracted

Path

C:\odt\!TXDOT_READ_ME!.txt

Ransom Note

Greetings, Texas Department of Transportation! Read this message CAREFULLY and contact someone from IT department. Your files are securely ENCRYPTED. No third party decryption software EXISTS. MODIFICATION or RENAMING encrypted files may cause decryption failure. You can send us an encrypted file (not greater than 400KB) and we will decrypt it FOR FREE, so you have no doubts in possibility to restore all files from all affected systems ANY TIME. Encrypted file SHOULD NOT contain sensitive information (technical, backups, databases, large documents). The rest of data will be available after the PAYMENT. Infrastructure rebuild will cost you MUCH more. Contact us ONLY if you officially represent the whole affected network. The ONLY attachments we accept are non archived encrypted files for test decryption. Speak ENGLISH when contacting us. Mail us: [email protected] We kindly ask you not to use GMAIL, YAHOO or LIVE to contact us. The PRICE depends on how quickly you do it. �

Emails

[email protected]

Signatures

Deletes NTFS Change Journal 2 TTPs 1 IoCs

The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.

ransomware

Inhibit System Recovery

T1490

Data Destruction

T1485

pid	Process
516	fsutil.exe

RansomEXX Ransomware
Targeted ransomware with variants which affect Windows and Linux systems.
ransomware ransomexx_win

Clears Windows event logs 1 TTPs 4 IoCs

evasion ransomware

Indicator Removal on Host

T1070

pid	Process
4072	wevtutil.exe
2636	wevtutil.exe
2012	wevtutil.exe
1300	wevtutil.exe

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2384	bcdedit.exe
4756	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command-Line Interface

T1059

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
616	wbadmin.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies extensions of user files 8 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\DismountRequest.crw => C:\Users\Admin\Pictures\DismountRequest.crw.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ExportUse.raw => C:\Users\Admin\Pictures\ExportUse.raw.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\MoveInvoke.png => C:\Users\Admin\Pictures\MoveInvoke.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File opened for modification	C:\Users\Admin\Pictures\PingSave.tiff	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File opened for modification	C:\Users\Admin\Pictures\PopResolve.tiff	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\PingSave.tiff => C:\Users\Admin\Pictures\PingSave.tiff.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\PopResolve.tiff => C:\Users\Admin\Pictures\PopResolve.tiff.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\UnlockInstall.png => C:\Users\Admin\Pictures\UnlockInstall.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Overwrites deleted data with Cipher tool 1 TTPs
Cipher is a Windows tool which be used to securely wipe deallocated HDD space, preventing recovery of deleted data.
ransomware

Inhibit System Recovery
T1490

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-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	cipher.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2012	wevtutil.exe
Token: SeBackupPrivilege	2012	wevtutil.exe
Token: SeSecurityPrivilege	5024	wevtutil.exe
Token: SeBackupPrivilege	5024	wevtutil.exe
Token: SeSecurityPrivilege	4072	wevtutil.exe
Token: SeBackupPrivilege	4072	wevtutil.exe
Token: SeSecurityPrivilege	2636	wevtutil.exe
Token: SeBackupPrivilege	2636	wevtutil.exe
Token: SeSecurityPrivilege	1300	wevtutil.exe
Token: SeBackupPrivilege	1300	wevtutil.exe
Token: SeBackupPrivilege	448	wbengine.exe
Token: SeRestorePrivilege	448	wbengine.exe
Token: SeSecurityPrivilege	448	wbengine.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 516	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	92
PID 1752 wrote to memory of 516	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	92
PID 1752 wrote to memory of 616	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	93
PID 1752 wrote to memory of 616	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	93
PID 1752 wrote to memory of 5024	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	91
PID 1752 wrote to memory of 5024	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	91
PID 1752 wrote to memory of 2012	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	90
PID 1752 wrote to memory of 2012	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	90
PID 1752 wrote to memory of 4756	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	89
PID 1752 wrote to memory of 4756	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	89
PID 1752 wrote to memory of 2636	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	88
PID 1752 wrote to memory of 2636	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	88
PID 1752 wrote to memory of 2740	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	87
PID 1752 wrote to memory of 2740	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	87
PID 1752 wrote to memory of 2740	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	87
PID 1752 wrote to memory of 4072	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	86
PID 1752 wrote to memory of 4072	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	86
PID 1752 wrote to memory of 2384	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	85
PID 1752 wrote to memory of 2384	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	85
PID 1752 wrote to memory of 1464	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	83
PID 1752 wrote to memory of 1464	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	83
PID 1752 wrote to memory of 1464	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	83
PID 1752 wrote to memory of 4968	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	84
PID 1752 wrote to memory of 4968	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	84
PID 1752 wrote to memory of 1300	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	94
PID 1752 wrote to memory of 1300	1752	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	94

C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
"C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:1464
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:4968
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:2384
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:4072
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:2740
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:2636
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:4756
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:2012
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5024
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  - Deletes NTFS Change Journal
  PID:516
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:616
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:1300