ransomexx_win | 1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b

Analysis

max time kernel
112s
max time network
128s
platform
windows10_x64
resource
win10-en-20211014
submitted
30-11-2021 13:30

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General

Target

1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
Size

5.4MB
MD5

bf8dafaedf5b031ba01200e2ec608f96
SHA1

3e6689dc6a8a717b4114a7fe65bba594c597c7b9
SHA256

1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b
SHA512

625535d71b2ca8a547924f08357eda1dc1d669b6c4ae1d0a436af1435fb9af58f24b63cde71588cee1785e36bb950c8c412db9c1e0541e65d11f2a13955fe7f6

Score

10^/10

ransomexx_win evasion ransomware vmprotect

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
2468	bcdedit.exe
4060	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
2188	wbadmin.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\RegisterUnblock.png => C:\Users\Admin\Pictures\RegisterUnblock.png.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\ResolveSync.png => C:\Users\Admin\Pictures\ResolveSync.png.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\UninstallPublish.crw => C:\Users\Admin\Pictures\UninstallPublish.crw.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\ConnectDeny.tif => C:\Users\Admin\Pictures\ConnectDeny.tif.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\InitializeTest.crw => C:\Users\Admin\Pictures\InitializeTest.crw.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.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

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/2756-116-0x0000000001050000-0x000000000192C000-memory.dmp	vmprotect

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 19 IoCs

pid	Process
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2936	wevtutil.exe
Token: SeBackupPrivilege	2936	wevtutil.exe
Token: SeSecurityPrivilege	1352	wevtutil.exe
Token: SeBackupPrivilege	1352	wevtutil.exe
Token: SeSecurityPrivilege	1320	wevtutil.exe
Token: SeBackupPrivilege	1320	wevtutil.exe
Token: SeSecurityPrivilege	2760	wevtutil.exe
Token: SeBackupPrivilege	2760	wevtutil.exe
Token: SeSecurityPrivilege	1132	wevtutil.exe
Token: SeBackupPrivilege	1132	wevtutil.exe
Token: SeBackupPrivilege	1036	wbengine.exe
Token: SeRestorePrivilege	1036	wbengine.exe
Token: SeSecurityPrivilege	1036	wbengine.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 1232	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	72
PID 2756 wrote to memory of 1232	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	72
PID 2756 wrote to memory of 1232	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	72
PID 2756 wrote to memory of 956	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	73
PID 2756 wrote to memory of 956	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	73
PID 2756 wrote to memory of 956	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	73
PID 2756 wrote to memory of 4060	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	76
PID 2756 wrote to memory of 4060	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	76
PID 2756 wrote to memory of 1048	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	75
PID 2756 wrote to memory of 1048	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	75
PID 2756 wrote to memory of 2468	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	74
PID 2756 wrote to memory of 2468	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	74
PID 2756 wrote to memory of 2188	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	77
PID 2756 wrote to memory of 2188	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	77
PID 2756 wrote to memory of 1132	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	82
PID 2756 wrote to memory of 1132	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	82
PID 2756 wrote to memory of 2760	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	81
PID 2756 wrote to memory of 2760	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	81
PID 2756 wrote to memory of 1292	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	80
PID 2756 wrote to memory of 1292	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	80
PID 2756 wrote to memory of 2936	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	79
PID 2756 wrote to memory of 2936	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	79
PID 2756 wrote to memory of 1320	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	78
PID 2756 wrote to memory of 1320	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	78
PID 2756 wrote to memory of 1352	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	83
PID 2756 wrote to memory of 1352	2756	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	83

C:\Users\Admin\AppData\Local\Temp\1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
"C:\Users\Admin\AppData\Local\Temp\1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe"
1⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:1232
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:956
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:2468
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:1048
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:4060
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:2188
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1320
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  PID:1292
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1132
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1352

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1036

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3796

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Indicator Removal on Host

T1070

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Data Destruction

T1485

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/2756-116-0x0000000001050000-0x000000000192C000-memory.dmp

Filesize
8.9MB

Download
memory/2756-119-0x0000000000C30000-0x0000000000C31000-memory.dmp

Filesize
4KB

Download