ragnarok | db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785

General

Target
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
Size 228KB
Sample231012-trd5cadb73
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
2160	bcdedit.exe
3900	bcdedit.exe

Renames multiple (262) 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
1952	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
4948	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1760	vssvc.exe
Token: SeRestorePrivilege	1760	vssvc.exe
Token: SeAuditPrivilege	1760	vssvc.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4284 wrote to memory of 1816	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	85
PID 4284 wrote to memory of 1816	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	85
PID 4284 wrote to memory of 4812	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	87
PID 4284 wrote to memory of 4812	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	87
PID 4284 wrote to memory of 5096	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	86
PID 4284 wrote to memory of 5096	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	86
PID 4284 wrote to memory of 2132	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	88
PID 4284 wrote to memory of 2132	4284	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	88
PID 5096 wrote to memory of 2160	5096	cmd.exe	89
PID 5096 wrote to memory of 2160	5096	cmd.exe	89
PID 1816 wrote to memory of 4948	1816	cmd.exe	90
PID 1816 wrote to memory of 4948	1816	cmd.exe	90
PID 4812 wrote to memory of 3900	4812	cmd.exe	91
PID 4812 wrote to memory of 3900	4812	cmd.exe	91
PID 2132 wrote to memory of 1952	2132	cmd.exe	92
PID 2132 wrote to memory of 1952	2132	cmd.exe	92

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:4284
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c vssadmin delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4948
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} recoveryenabled no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5096
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} recoveryenabled no
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:2160
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4812
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:3900
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies Windows Firewall
    PID:1952

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1760

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 1318997dc2e21093a44f831abfa25f6348039855ac86552a488e389f2f4d6dbc
MD5 2b525dc0d54faddcdac9fb1602831df7
SHA1 d5a3298d3de50de57d230c52140022b58f4c14d4
SHA512 562a231908a8ad500a740484aa18d41853f4c37e7db03c450a973e0d5b4fecbc7468d5b49272766461f2b38097011cf7da78f3e3448197b2122a240314c3c7d0
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