ragnarok | 4110e5497ebc7f2f587412c08967e815d142494a1027ef235c375d2841bc0b6a

Analysis

max time kernel
62s
max time network
21s
platform
windows7_x64
resource
win7v200722
submitted
23/09/2020, 11:33

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General

Target

l.exe
Size

5.4MB
MD5

d735552452a4c85c6f7cbacb67bafa38
SHA1

94a55c38e34930ac4a11bef628b3678721759179
SHA256

4110e5497ebc7f2f587412c08967e815d142494a1027ef235c375d2841bc0b6a
SHA512

7627870b3f097cd12257f55e1165f4fd4662adb1a9ce88cb2f4198109e11a9ca7c5c5e76c8a5b9072034fae094e71561d49d3e53f7765b8776c861f3d3a70ed4

Score

10^/10

ransomware evasion ragnarok persistence spyware

Malware Config

Extracted

Path

C:\!!ReadMe_To_Decrypt_My_Files.txt

Family

ragnarok

Ransom Note

It's not late to say happy new year right? but how didn't i bring a gift as the first time we met :) #what happend to your files? Unfortunately your files are encrypted with rsa4096 and aes encryption,you won't decrypt your files without our tool but don't worry,you can follow the instructions to decrypt your files 1.obviously you need a decrypt tool so that you can decrypt all of your files 2.contact with us for our btcoin address and send us your DEVICE ID after you decide to pay 3.i will reply a specific price e.g 1.0011 or 0.9099 after i received your mail including your DEVICE ID 4.i will send your personal decrypt tool only work on your own machine after i had check the ransom paystatus 5.you can provide a file less than 1M for us to prove that we can decrypt your files after you paid 6.it's wise to pay as soon as possible it wont make you more losses the ransome: 1 btcoin for per machine,5 bitcoins for all machines how to buy bitcoin and transfer? i think you are very good at googlesearch [email protected] [email protected] [email protected] Attention:if you wont pay the ransom in five days, all of your files will be made public on internet and will be deleted YOUR DEVICE ID: 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

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
T1107

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1592	bcdedit.exe
1604	bcdedit.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\DisableDismount.raw => C:\Users\Admin\Pictures\DisableDismount.raw.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\InvokeClose.raw => C:\Users\Admin\Pictures\InvokeClose.raw.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\RedoSearch.crw => C:\Users\Admin\Pictures\RedoSearch.crw.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\UnlockUndo.tif => C:\Users\Admin\Pictures\UnlockUndo.tif.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\DebugConvertFrom.png => C:\Users\Admin\Pictures\DebugConvertFrom.png.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\StepOut.png => C:\Users\Admin\Pictures\StepOut.png.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\StepShow.raw => C:\Users\Admin\Pictures\StepShow.raw.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\TestExpand.crw => C:\Users\Admin\Pictures\TestExpand.crw.ragnarok	l.exe
File renamed	C:\Users\Admin\Pictures\WriteApprove.crw => C:\Users\Admin\Pictures\WriteApprove.crw.ragnarok	l.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

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File created	C:\Users\Public\Libraries\desktop.ini	l.exe
File created	C:\Users\Public\Pictures\desktop.ini	l.exe
File created	C:\Users\Admin\Favorites\Links for United States\desktop.ini	l.exe
File created	C:\Users\Public\Music\desktop.ini	l.exe
File created	C:\Users\Public\Recorded TV\Sample Media\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	l.exe
File created	C:\Users\Admin\Contacts\desktop.ini	l.exe
File created	C:\Users\Admin\Links\desktop.ini	l.exe
File created	C:\Users\Public\Downloads\desktop.ini	l.exe
File created	C:\Users\Public\Desktop\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\0V5SICB9\desktop.ini	l.exe
File created	C:\Users\Admin\Downloads\desktop.ini	l.exe
File created	C:\Users\Admin\Music\desktop.ini	l.exe
File created	C:\Users\Public\Music\Sample Music\desktop.ini	l.exe
File created	C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	l.exe
File created	C:\Users\Admin\Desktop\desktop.ini	l.exe
File created	C:\Users\Admin\Saved Games\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\UBDEWKGM\desktop.ini	l.exe
File created	C:\Users\Public\Videos\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\4AO3J8KQ\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\G9Q5MRQ4\desktop.ini	l.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	l.exe
File created	C:\Users\Admin\Favorites\desktop.ini	l.exe
File created	C:\Users\Admin\Pictures\desktop.ini	l.exe
File created	C:\Users\Public\Documents\desktop.ini	l.exe
File created	C:\Users\Admin\Favorites\Links\desktop.ini	l.exe
File created	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	l.exe
File created	C:\Users\Public\desktop.ini	l.exe
File created	C:\Users\Admin\Searches\desktop.ini	l.exe
File created	C:\Users\Public\Recorded TV\desktop.ini	l.exe
File created	C:\Users\Admin\Documents\desktop.ini	l.exe
File created	C:\Users\Admin\Videos\desktop.ini	l.exe
File created	C:\Users\Public\Videos\Sample Videos\desktop.ini	l.exe

Modifies service 2 TTPs 10 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\LocalConfig	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\napagent\LocalConfig\Enroll\HcsGroups	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Shas	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\napagent\LocalConfig\UI	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	vssvc.exe
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\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Qecs	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	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
1644	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1764	l.exe
1764	l.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1612	vssvc.exe
Token: SeRestorePrivilege	1612	vssvc.exe
Token: SeAuditPrivilege	1612	vssvc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2040	1764	l.exe	26
PID 1764 wrote to memory of 2040	1764	l.exe	26
PID 1764 wrote to memory of 2040	1764	l.exe	26
PID 1764 wrote to memory of 2040	1764	l.exe	26
PID 1764 wrote to memory of 1032	1764	l.exe	27
PID 1764 wrote to memory of 1032	1764	l.exe	27
PID 1764 wrote to memory of 1032	1764	l.exe	27
PID 1764 wrote to memory of 1032	1764	l.exe	27
PID 1764 wrote to memory of 1200	1764	l.exe	29
PID 1764 wrote to memory of 1200	1764	l.exe	29
PID 1764 wrote to memory of 1200	1764	l.exe	29
PID 1764 wrote to memory of 1200	1764	l.exe	29
PID 1764 wrote to memory of 1828	1764	l.exe	31
PID 1764 wrote to memory of 1828	1764	l.exe	31
PID 1764 wrote to memory of 1828	1764	l.exe	31
PID 1764 wrote to memory of 1828	1764	l.exe	31
PID 1032 wrote to memory of 1592	1032	cmd.exe	34
PID 1032 wrote to memory of 1592	1032	cmd.exe	34
PID 1032 wrote to memory of 1592	1032	cmd.exe	34
PID 1200 wrote to memory of 1604	1200	cmd.exe	35
PID 1200 wrote to memory of 1604	1200	cmd.exe	35
PID 1200 wrote to memory of 1604	1200	cmd.exe	35
PID 2040 wrote to memory of 1644	2040	cmd.exe	36
PID 2040 wrote to memory of 1644	2040	cmd.exe	36
PID 2040 wrote to memory of 1644	2040	cmd.exe	36
PID 1828 wrote to memory of 1700	1828	cmd.exe	37
PID 1828 wrote to memory of 1700	1828	cmd.exe	37
PID 1828 wrote to memory of 1700	1828	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\l.exe
"C:\Users\Admin\AppData\Local\Temp\l.exe"
1⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\system32\cmd.exe
  cmd.exe /c vssadmin delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1644
- C:\Windows\system32\cmd.exe
  cmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1592
- C:\Windows\system32\cmd.exe
  cmd.exe /c bcdedit /set {current} recoveryenabled no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {current} recoveryenabled no
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1604
- C:\Windows\system32\cmd.exe
  cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies service
    PID:1700

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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