ransomexx_win | 43fba9b9b5d580914e6a0ecb62ed0a8ab1f5d5bb5a5a8ffd8efac748837f9bb5

General

Target

480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
Size

156KB
MD5

9832040cb9c0aa58cd12d656f82420ba
SHA1

74a62abd145e9571e029db76c06c3100bfb3f4a9
SHA256

480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7
SHA512

f41ea39996bd4dd11d6df8250754612068e52e42da6c737340b0d73e71d487a2f9074ea0394957f34bb3cbc72a0cb3aa479b91a7c4177089ccdc1578a232cf49

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
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
1696	bcdedit.exe
1156	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
2724	wbadmin.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies extensions of user files 7 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\FindSuspend.tiff => C:\Users\Admin\Pictures\FindSuspend.tiff.txd0t	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File opened for modification	C:\Users\Admin\Pictures\ReadConnect.tiff	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File renamed	C:\Users\Admin\Pictures\ReadConnect.tiff => C:\Users\Admin\Pictures\ReadConnect.tiff.txd0t	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File renamed	C:\Users\Admin\Pictures\RepairOpen.png => C:\Users\Admin\Pictures\RepairOpen.png.txd0t	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File renamed	C:\Users\Admin\Pictures\AssertDisconnect.crw => C:\Users\Admin\Pictures\AssertDisconnect.crw.txd0t	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File opened for modification	C:\Users\Admin\Pictures\FindSuspend.tiff	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
File renamed	C:\Users\Admin\Pictures\ClosePublish.png => C:\Users\Admin\Pictures\ClosePublish.png.txd0t	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.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 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
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\FriendlyName	vds.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2316	wevtutil.exe
Token: SeBackupPrivilege	2316	wevtutil.exe
Token: SeSecurityPrivilege	2408	wevtutil.exe
Token: SeBackupPrivilege	2408	wevtutil.exe
Token: SeSecurityPrivilege	1368	wevtutil.exe
Token: SeBackupPrivilege	1368	wevtutil.exe
Token: SeSecurityPrivilege	1992	wevtutil.exe
Token: SeBackupPrivilege	1992	wevtutil.exe
Token: SeSecurityPrivilege	1336	wevtutil.exe
Token: SeBackupPrivilege	1336	wevtutil.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 1376	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	80
PID 2132 wrote to memory of 1580	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	82
PID 2132 wrote to memory of 1376	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	80
PID 2132 wrote to memory of 1580	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	82
PID 2132 wrote to memory of 1992	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	79
PID 2132 wrote to memory of 1992	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	79
PID 2132 wrote to memory of 1336	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	78
PID 2132 wrote to memory of 1336	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	78
PID 2132 wrote to memory of 1368	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	73
PID 2132 wrote to memory of 1368	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	73
PID 2132 wrote to memory of 2348	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	77
PID 2132 wrote to memory of 2348	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	77
PID 2132 wrote to memory of 2348	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	77
PID 2132 wrote to memory of 1696	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	76
PID 2132 wrote to memory of 1696	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	76
PID 2132 wrote to memory of 2408	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	75
PID 2132 wrote to memory of 2408	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	75
PID 2132 wrote to memory of 2724	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	83
PID 2132 wrote to memory of 2724	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	83
PID 2132 wrote to memory of 2316	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	74
PID 2132 wrote to memory of 2316	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	74
PID 2132 wrote to memory of 1156	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	81
PID 2132 wrote to memory of 1156	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	81
PID 2132 wrote to memory of 1796	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	84
PID 2132 wrote to memory of 1796	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	84
PID 2132 wrote to memory of 1796	2132	480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe	84

C:\Users\Admin\AppData\Local\Temp\480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe
"C:\Users\Admin\AppData\Local\Temp\480af18104198ad3db1518501ee58f9c4aecd19dbbf2c5dd7694d1d87e9aeac7.exe"
1⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1368
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2316
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1696
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:2348
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1336
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1992
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  PID:1376
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1156
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:1580
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:2724
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:1796