ransomexx_win | 562b6736cb6b1abff6a98c29059ae0f6de997d9f3137de622c92f217510519a4

Analysis

max time kernel
65s
max time network
48s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
24-07-2022 15:47

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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:\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 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
628	fsutil.exe

RansomEXX Ransomware 6 IoCs

Targeted ransomware with variants which affect Windows and Linux systems.

ransomware ransomexx_win

description	ioc	pid	Process
		1068	wevtutil.exe
		680	wevtutil.exe
		968	wevtutil.exe
		1488	wevtutil.exe
		628	fsutil.exe
File opened for modification	C:\Users\Admin\Pictures\DebugUnlock.tiff		e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Clears Windows event logs 1 TTPs 4 IoCs

evasion ransomware

Indicator Removal on Host

T1070

pid	Process
680	wevtutil.exe
968	wevtutil.exe
1488	wevtutil.exe
1068	wevtutil.exe

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1360	bcdedit.exe
1276	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
1544	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\ExitUnregister.tif => C:\Users\Admin\Pictures\ExitUnregister.tif.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\MeasureSelect.png => C:\Users\Admin\Pictures\MeasureSelect.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\StopPush.png => C:\Users\Admin\Pictures\StopPush.png.txd0t	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File opened for modification	C:\Users\Admin\Pictures\DebugUnlock.tiff	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
File renamed	C:\Users\Admin\Pictures\DebugUnlock.tiff => C:\Users\Admin\Pictures\DebugUnlock.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

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1068	wevtutil.exe
Token: SeBackupPrivilege	1068	wevtutil.exe
Token: SeSecurityPrivilege	368	wevtutil.exe
Token: SeBackupPrivilege	368	wevtutil.exe
Token: SeSecurityPrivilege	1488	wevtutil.exe
Token: SeBackupPrivilege	1488	wevtutil.exe
Token: SeSecurityPrivilege	680	wevtutil.exe
Token: SeBackupPrivilege	680	wevtutil.exe
Token: SeSecurityPrivilege	968	wevtutil.exe
Token: SeBackupPrivilege	968	wevtutil.exe
Token: SeBackupPrivilege	1708	wbengine.exe
Token: SeRestorePrivilege	1708	wbengine.exe
Token: SeSecurityPrivilege	1708	wbengine.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 1328	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	51
PID 1180 wrote to memory of 1328	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	51
PID 1180 wrote to memory of 1328	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	51
PID 1180 wrote to memory of 1328	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	51
PID 1180 wrote to memory of 628	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	53
PID 1180 wrote to memory of 628	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	53
PID 1180 wrote to memory of 628	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	53
PID 1180 wrote to memory of 628	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	53
PID 1180 wrote to memory of 1276	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	31
PID 1180 wrote to memory of 1276	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	31
PID 1180 wrote to memory of 1276	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	31
PID 1180 wrote to memory of 1276	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	31
PID 1180 wrote to memory of 1544	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	52
PID 1180 wrote to memory of 1544	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	52
PID 1180 wrote to memory of 1544	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	52
PID 1180 wrote to memory of 1544	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	52
PID 1180 wrote to memory of 1360	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	30
PID 1180 wrote to memory of 1360	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	30
PID 1180 wrote to memory of 1360	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	30
PID 1180 wrote to memory of 1360	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	30
PID 1180 wrote to memory of 1488	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	37
PID 1180 wrote to memory of 1488	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	37
PID 1180 wrote to memory of 1488	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	37
PID 1180 wrote to memory of 1488	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	37
PID 1180 wrote to memory of 968	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	35
PID 1180 wrote to memory of 968	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	35
PID 1180 wrote to memory of 968	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	35
PID 1180 wrote to memory of 968	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	35
PID 1180 wrote to memory of 368	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	36
PID 1180 wrote to memory of 368	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	36
PID 1180 wrote to memory of 368	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	36
PID 1180 wrote to memory of 368	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	36
PID 1180 wrote to memory of 680	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	34
PID 1180 wrote to memory of 680	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	34
PID 1180 wrote to memory of 680	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	34
PID 1180 wrote to memory of 680	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	34
PID 1180 wrote to memory of 1068	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	33
PID 1180 wrote to memory of 1068	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	33
PID 1180 wrote to memory of 1068	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	33
PID 1180 wrote to memory of 1068	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	33
PID 1180 wrote to memory of 972	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	50
PID 1180 wrote to memory of 972	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	50
PID 1180 wrote to memory of 972	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	50
PID 1180 wrote to memory of 972	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	50
PID 1180 wrote to memory of 1484	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	32
PID 1180 wrote to memory of 1484	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	32
PID 1180 wrote to memory of 1484	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	32
PID 1180 wrote to memory of 1484	1180	e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe	32

C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe
"C:\Users\Admin\AppData\Local\Temp\e55fcf9315c52d2abd3431f7e4bb82cbd2b0d24d124e0e1a27b951030b2de162.exe"
1⤵
- RansomEXX Ransomware
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1360
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1276
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:1484
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  - RansomEXX Ransomware
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:1068
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - RansomEXX Ransomware
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:680
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - RansomEXX Ransomware
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:968
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:368
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - RansomEXX Ransomware
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:1488
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:972
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:1328
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:1544
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  - Deletes NTFS Change Journal
  - RansomEXX Ransomware
  PID:628

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1708

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1052

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1060

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/368-68-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

Filesize
8KB

Download
memory/1180-54-0x0000000075481000-0x0000000075483000-memory.dmp

Filesize
8KB

Download
memory/1180-55-0x00000000088E0000-0x000000000939A000-memory.dmp

Filesize
10.7MB

Download