ransomexx_win | ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc

Analysis

max time kernel
121s
max time network
51s
platform
windows7_x64
resource
win7v20210408
submitted
20-08-2021 16:15

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General

Target

ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
Size

156KB
MD5

b2bc74d95c8bd5b5db9c02df6a6ae2d3
SHA1

e7748b92347f95589fa739cbe5c089046614ce92
SHA256

ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc
SHA512

bda491ab197205d48956f9bc1b45009abba701e6ebb4ee551bfc2b58a0ed7a58a5793624cb2884f9efcbfbf647b1792d619dbb83917cfad9f412593c4cdb498b

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
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
1892	bcdedit.exe
616	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
1716	wbadmin.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\NewFind.raw => C:\Users\Admin\Pictures\NewFind.raw.txd0t	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
File renamed	C:\Users\Admin\Pictures\RedoImport.crw => C:\Users\Admin\Pictures\RedoImport.crw.txd0t	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
File renamed	C:\Users\Admin\Pictures\RenameLimit.tif => C:\Users\Admin\Pictures\RenameLimit.tif.txd0t	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.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 8 IoCs

pid	Process
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1152	wevtutil.exe
Token: SeBackupPrivilege	1152	wevtutil.exe
Token: SeSecurityPrivilege	436	wevtutil.exe
Token: SeBackupPrivilege	436	wevtutil.exe
Token: SeSecurityPrivilege	296	wevtutil.exe
Token: SeBackupPrivilege	296	wevtutil.exe
Token: SeSecurityPrivilege	388	wevtutil.exe
Token: SeBackupPrivilege	388	wevtutil.exe
Token: SeBackupPrivilege	1700	wbengine.exe
Token: SeRestorePrivilege	1700	wbengine.exe
Token: SeSecurityPrivilege	1700	wbengine.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1152	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	31
PID 1988 wrote to memory of 1152	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	31
PID 1988 wrote to memory of 1152	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	31
PID 1988 wrote to memory of 1152	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	31
PID 1988 wrote to memory of 296	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	32
PID 1988 wrote to memory of 296	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	32
PID 1988 wrote to memory of 296	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	32
PID 1988 wrote to memory of 296	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	32
PID 1988 wrote to memory of 388	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	36
PID 1988 wrote to memory of 388	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	36
PID 1988 wrote to memory of 388	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	36
PID 1988 wrote to memory of 388	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	36
PID 1988 wrote to memory of 436	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	34
PID 1988 wrote to memory of 436	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	34
PID 1988 wrote to memory of 436	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	34
PID 1988 wrote to memory of 436	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	34
PID 1988 wrote to memory of 928	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	35
PID 1988 wrote to memory of 928	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	35
PID 1988 wrote to memory of 928	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	35
PID 1988 wrote to memory of 928	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	35
PID 1988 wrote to memory of 616	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	40
PID 1988 wrote to memory of 616	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	40
PID 1988 wrote to memory of 616	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	40
PID 1988 wrote to memory of 616	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	40
PID 1988 wrote to memory of 1892	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	39
PID 1988 wrote to memory of 1892	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	39
PID 1988 wrote to memory of 1892	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	39
PID 1988 wrote to memory of 956	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	42
PID 1988 wrote to memory of 956	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	42
PID 1988 wrote to memory of 956	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	42
PID 1988 wrote to memory of 956	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	42
PID 1988 wrote to memory of 1892	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	39
PID 1988 wrote to memory of 1488	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	38
PID 1988 wrote to memory of 1488	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	38
PID 1988 wrote to memory of 1488	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	38
PID 1988 wrote to memory of 1488	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	38
PID 1988 wrote to memory of 2028	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	37
PID 1988 wrote to memory of 2028	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	37
PID 1988 wrote to memory of 2028	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	37
PID 1988 wrote to memory of 2028	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	37
PID 1988 wrote to memory of 1716	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	41
PID 1988 wrote to memory of 1716	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	41
PID 1988 wrote to memory of 1716	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	41
PID 1988 wrote to memory of 1716	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	41
PID 1988 wrote to memory of 2040	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	33
PID 1988 wrote to memory of 2040	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	33
PID 1988 wrote to memory of 2040	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	33
PID 1988 wrote to memory of 2040	1988	ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe	33

C:\Users\Admin\AppData\Local\Temp\ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe
"C:\Users\Admin\AppData\Local\Temp\ed2b1f855fc7a39a7cf2cfbfd5a10707801ba313bab9c5d748fcd3703aad66fc.exe"
1⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Application
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1152
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Security
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:296
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:D:
  2⤵
  - Enumerates connected drives
  PID:2040
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl Setup
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" cl System
  2⤵
  PID:928
- C:\Windows\System32\wevtutil.exe
  "C:\Windows\System32\wevtutil.exe" sl Security /e:false
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:388
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\System32\cipher.exe" /w:C:
  2⤵
  PID:2028
- C:\Windows\System32\fsutil.exe
  "C:\Windows\System32\fsutil.exe" usn deletejournal /D C:
  2⤵
  PID:1488
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1892
- C:\Windows\System32\bcdedit.exe
  "C:\Windows\System32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:616
- C:\Windows\System32\wbadmin.exe
  "C:\Windows\System32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:1716
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  2⤵
  PID:956

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1700

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1644

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1372

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/1716-72-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

Filesize
8KB

Download
memory/1988-59-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

Filesize
8KB

Download