ragnarok | db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785

General

Target

db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
Size

228KB
MD5

e134d5a91ed31516566a091c0caa76fe
SHA1

260c54f8ef9450d2366794f35d0b291bdc133ec5
SHA256

db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785
SHA512

4bccd544d3f53e4240b62651465eee6347cf54501437cf7d6f79060707ba702f4ff16435aeb342099f4b238e7b7372a60a2271b3a9b537e4893d743874c8d1db

Score

10^/10

ransomware evasion persistence spyware ragnarok

Malware Config

Extracted

Path

C:\Users\Default\How_To_Decrypt_My_Files.txt

Family

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5}	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer	vssvc.exe

Ragnarok
Ransomware family deployed from Citrix servers infected via CVE-2019-19781.
ransomware ragnarok
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 496 wrote to memory of 808	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	67
PID 496 wrote to memory of 808	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	67
PID 496 wrote to memory of 844	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	68
PID 496 wrote to memory of 844	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	68
PID 496 wrote to memory of 1000	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	69
PID 496 wrote to memory of 1000	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	69
PID 496 wrote to memory of 416	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	70
PID 496 wrote to memory of 416	496	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe	70
PID 416 wrote to memory of 1036	416	cmd.exe	71
PID 416 wrote to memory of 1036	416	cmd.exe	71
PID 1000 wrote to memory of 1080	1000	cmd.exe	72
PID 1000 wrote to memory of 1080	1000	cmd.exe	72
PID 808 wrote to memory of 1156	808	cmd.exe	73
PID 808 wrote to memory of 1156	808	cmd.exe	73
PID 844 wrote to memory of 1388	844	cmd.exe	74
PID 844 wrote to memory of 1388	844	cmd.exe	74

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1080	bcdedit.exe
1388	bcdedit.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1552	vssvc.exe
Token: SeRestorePrivilege	1552	vssvc.exe
Token: SeAuditPrivilege	1552	vssvc.exe

Interacts with shadow copies 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1156	vssadmin.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\SuspendClear.png => C:\Users\Admin\Pictures\SuspendClear.png.ragnarok_cry	db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe

C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
"C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Modifies extensions of user files
PID:496
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c vssadmin delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1156
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1388
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c bcdedit /set {current} recoveryenabled no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1000
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} recoveryenabled no
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1080
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:416
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    PID:1036