ragnarok | db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785

Analysis

max time kernel
127s
max time network
140s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
12/10/2023, 12:52

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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:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\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
2724	bcdedit.exe
2712	bcdedit.exe

Renames multiple (87) 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
2692	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
2708	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2784	vssvc.exe
Token: SeRestorePrivilege	2784	vssvc.exe
Token: SeAuditPrivilege	2784	vssvc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2384	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	29
PID 2688 wrote to memory of 2384	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	29
PID 2688 wrote to memory of 2384	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	29
PID 2688 wrote to memory of 2384	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	29
PID 2688 wrote to memory of 2604	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	31
PID 2688 wrote to memory of 2604	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	31
PID 2688 wrote to memory of 2604	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	31
PID 2688 wrote to memory of 2604	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	31
PID 2688 wrote to memory of 2640	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	30
PID 2688 wrote to memory of 2640	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	30
PID 2688 wrote to memory of 2640	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	30
PID 2688 wrote to memory of 2640	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	30
PID 2688 wrote to memory of 2644	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	32
PID 2688 wrote to memory of 2644	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	32
PID 2688 wrote to memory of 2644	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	32
PID 2688 wrote to memory of 2644	2688	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	32
PID 2644 wrote to memory of 2692	2644	cmd.exe	33
PID 2644 wrote to memory of 2692	2644	cmd.exe	33
PID 2644 wrote to memory of 2692	2644	cmd.exe	33
PID 2384 wrote to memory of 2708	2384	cmd.exe	34
PID 2384 wrote to memory of 2708	2384	cmd.exe	34
PID 2384 wrote to memory of 2708	2384	cmd.exe	34
PID 2640 wrote to memory of 2724	2640	cmd.exe	35
PID 2640 wrote to memory of 2724	2640	cmd.exe	35
PID 2640 wrote to memory of 2724	2640	cmd.exe	35
PID 2604 wrote to memory of 2712	2604	cmd.exe	36
PID 2604 wrote to memory of 2712	2604	cmd.exe	36
PID 2604 wrote to memory of 2712	2604	cmd.exe	36

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:2688
- C:\Windows\system32\cmd.exe
  cmd.exe /c vssadmin delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2708
- C:\Windows\system32\cmd.exe
  cmd.exe /c bcdedit /set {current} recoveryenabled no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} recoveryenabled no
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:2724
- C:\Windows\system32\cmd.exe
  cmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:2712
- C:\Windows\system32\cmd.exe
  cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies Windows Firewall
    PID:2692

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

How_To_Decrypt_My_Files.txt

Path C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\How_To_Decrypt_My_Files.txt
Size 1KB
SHA256 e696982aee458d3278a50180e7ff4a7868c82ce2d042c2f93ca1ad7a400affa4
MD5 5217ca6b48bb3836a51fe5acf54f1c98
SHA1 855c7a85e7bd87fdcbc72a799a0bb36de1e4648f
SHA512 25d39b673c3319564016898f3b1943dab3889d81911ce89ac25c68308c6ec8586242292a85416a69f76d4dc2bc3efc94f7baff75a0d79d35e6898f3237a1ebb0
MD5 SHA1 SHA512

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