ragnarok | db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785

General

Target
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
Size 228KB
Sample231012-p4cptscg83
SHA256 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785
MD5 e134d5a91ed31516566a091c0caa76fe
SHA1 260c54f8ef9450d2366794f35d0b291bdc133ec5
SHA512 4bccd544d3f53e4240b62651465eee6347cf54501437cf7d6f79060707ba702f4ff16435aeb342099f4b238e7b7372a60a2271b3a9b537e4893d743874c8d1db
SSDEEP 3072:PaOtRGsL8/MmCtAyBsli4bnQC2mCr/yXt5NKMxyNuX987URxf+zgTP7VZKf:PhGsL8kfAyBslvAyd3KMxomvf+iC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

ragnarok evasion ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Downloads\How_To_Decrypt_My_Files.txt

ragnarok

Ransom Note

#what happend? Unfortunately your files are encrypted, To decrypt your files follow the instructions 1. you need a decrypt tool so that you can decrypt all of your files 2. contact with us for our btc address if you want decrypt your files or you can do nothing just wait your files gona be deleted 3. you can provide a file which size less than 3M for us to prove that we can decrypt your files after you paid 4. it is wise to pay in the first time it wont cause you more losses DEVICE ID: ---------------------------- ==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 ---------------------------- you can send your DEVICE ID to mail address below [email protected]

Emails

[email protected]

Signatures

Ragnarok
Ransomware family deployed from Citrix servers infected via CVE-2019-19781.
ransomware ragnarok
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
4240	bcdedit.exe
2312	bcdedit.exe

Renames multiple (437) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
5056	netsh.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2216	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	456	vssvc.exe
Token: SeRestorePrivilege	456	vssvc.exe
Token: SeAuditPrivilege	456	vssvc.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 4944	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	87
PID 4776 wrote to memory of 4944	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	87
PID 4776 wrote to memory of 4996	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	86
PID 4776 wrote to memory of 4996	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	86
PID 4776 wrote to memory of 1980	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	85
PID 4776 wrote to memory of 1980	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	85
PID 4776 wrote to memory of 4008	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	84
PID 4776 wrote to memory of 4008	4776	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	84
PID 4008 wrote to memory of 5056	4008	cmd.exe	89
PID 4008 wrote to memory of 5056	4008	cmd.exe	89
PID 4996 wrote to memory of 4240	4996	cmd.exe	88
PID 4996 wrote to memory of 4240	4996	cmd.exe	88
PID 4944 wrote to memory of 2216	4944	cmd.exe	90
PID 4944 wrote to memory of 2216	4944	cmd.exe	90
PID 1980 wrote to memory of 2312	1980	cmd.exe	91
PID 1980 wrote to memory of 2312	1980	cmd.exe	91

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
"C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies Windows Firewall
    PID:5056
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} recoveryenabled no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} recoveryenabled no
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:2312
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:4240
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c vssadmin delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4944
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2216

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

3

T1490

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Downloads

How_To_Decrypt_My_Files.txt

Path C:\Users\Admin\Downloads\How_To_Decrypt_My_Files.txt
Size 1KB
SHA256 37a3aaff8445126dca03608ee7a197987015c26cf40ec0a65408c880f81dedde
MD5 9a5415d2c9a94ad647f0ce0f49d68c67
SHA1 063d2135e25599f02bbcbd663172672a4db64736
SHA512 b55e7c186870ac79682f76d196df2aebce4b96d90a1a0f84d26acf573faecb97f0ecea5250a71f0fa3794e1d79ad7b19c3bc6eaee20ebb459e411204589155ff
MD5 SHA1 SHA512

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads