ransomexx_win | 1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-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:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\!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
992	bcdedit.exe
1340	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
1560	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\UpdateDismount.tif => C:\Users\Admin\Pictures\UpdateDismount.tif.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\ApproveRequest.tif => C:\Users\Admin\Pictures\ApproveRequest.tif.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File opened for modification	C:\Users\Admin\Pictures\JoinDismount.tiff	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\JoinDismount.tiff => C:\Users\Admin\Pictures\JoinDismount.tiff.txd0t	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
File renamed	C:\Users\Admin\Pictures\ProtectShow.png => C:\Users\Admin\Pictures\ProtectShow.png.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
behavioral1/memory/1336-59-0x0000000001140000-0x0000000001A1C000-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

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe
1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1732	wevtutil.exe
Token: SeBackupPrivilege	1732	wevtutil.exe
Token: SeSecurityPrivilege	588	wevtutil.exe
Token: SeBackupPrivilege	588	wevtutil.exe
Token: SeSecurityPrivilege	1904	wevtutil.exe
Token: SeBackupPrivilege	1904	wevtutil.exe
Token: SeSecurityPrivilege	1748	wevtutil.exe
Token: SeBackupPrivilege	1748	wevtutil.exe
Token: SeBackupPrivilege	964	wbengine.exe
Token: SeRestorePrivilege	964	wbengine.exe
Token: SeSecurityPrivilege	964	wbengine.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2036	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	30
PID 1336 wrote to memory of 2036	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	30
PID 1336 wrote to memory of 2036	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	30
PID 1336 wrote to memory of 2036	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	30
PID 1336 wrote to memory of 1340	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	33
PID 1336 wrote to memory of 1340	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	33
PID 1336 wrote to memory of 1340	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	33
PID 1336 wrote to memory of 1340	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	33
PID 1336 wrote to memory of 992	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	32
PID 1336 wrote to memory of 992	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	32
PID 1336 wrote to memory of 992	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	32
PID 1336 wrote to memory of 992	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	32
PID 1336 wrote to memory of 308	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	34
PID 1336 wrote to memory of 308	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	34
PID 1336 wrote to memory of 308	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	34
PID 1336 wrote to memory of 308	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	34
PID 1336 wrote to memory of 1940	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	36
PID 1336 wrote to memory of 588	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	35
PID 1336 wrote to memory of 1940	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	36
PID 1336 wrote to memory of 588	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	35
PID 1336 wrote to memory of 1940	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	36
PID 1336 wrote to memory of 1940	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	36
PID 1336 wrote to memory of 588	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	35
PID 1336 wrote to memory of 588	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	35
PID 1336 wrote to memory of 1560	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	31
PID 1336 wrote to memory of 1560	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	31
PID 1336 wrote to memory of 1560	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	31
PID 1336 wrote to memory of 1560	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	31
PID 1336 wrote to memory of 1748	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	39
PID 1336 wrote to memory of 1748	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	39
PID 1336 wrote to memory of 1748	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	39
PID 1336 wrote to memory of 1748	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	39
PID 1336 wrote to memory of 1904	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	37
PID 1336 wrote to memory of 1904	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	37
PID 1336 wrote to memory of 1904	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	37
PID 1336 wrote to memory of 1904	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	37
PID 1336 wrote to memory of 1732	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	38
PID 1336 wrote to memory of 1732	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	38
PID 1336 wrote to memory of 1732	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	38
PID 1336 wrote to memory of 1732	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	38
PID 1336 wrote to memory of 1444	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	40
PID 1336 wrote to memory of 1444	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	40
PID 1336 wrote to memory of 1444	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	40
PID 1336 wrote to memory of 1444	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	40
PID 1336 wrote to memory of 1756	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	41
PID 1336 wrote to memory of 1756	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	41
PID 1336 wrote to memory of 1756	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	41
PID 1336 wrote to memory of 1756	1336	1699dd3b24dd5a405449a60f94b0043731deaa749d4899f2f927d913c624895b.bin.sample.exe	41

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:1336
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  PID:2036
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:1560
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:992
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1340
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:308
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:588
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  PID:1940
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1732
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1748
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:1444
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:1756

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:964

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:892

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1944

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/1336-57-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1336-56-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1336-59-0x0000000001140000-0x0000000001A1C000-memory.dmp

Filesize
8.9MB

Download
memory/1336-61-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1336-55-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1904-75-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp

Filesize
8KB

Download