djvu | 25fee0d9c2bf841ad0c0271a34e450d2a82dcc91d6fd7c669b9882fc436e06ea

General

Target

20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
Size

1.1MB
MD5

591b5afb1f701910bb6b2a95e83b9f15
SHA1

f3c0a74e0c38e75ec86195c83244831ae21cde58
SHA256

25fee0d9c2bf841ad0c0271a34e450d2a82dcc91d6fd7c669b9882fc436e06ea
SHA512

a66af28164683d16522e4c2a446ccaf1c9f64cbd743747c25359a2dc31e011683c1e852a829361ec61b9cdd7479114823fb684e28c7fa8754fd173f3c9b1f4ea
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8SWQHUq7:F0dwAYZt6C31WeTVRPOhS7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://vrta.top/nddddhsspen6/get.php

Attributes

extension
.qscx
offline_id
1CWYcKrbjXlx3TNdvKiBjYphw1eJfZy1dzTnE8t1
payload_url
http://vrta.top/files/penelop/updatewin1.exe

http://vrta.top/files/penelop/updatewin2.exe

http://vrta.top/files/penelop/updatewin.exe

http://vrta.top/files/penelop/3.exe

http://vrta.top/files/penelop/4.exe

http://vrta.top/files/penelop/5.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-V2fE396VPW Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0303ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000233d4-9.dat	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Executes dropped EXE 1 IoCs

pid	Process
4076	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4224	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7a75336b-dddc-43dc-9859-55780a4438b0\\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe\" --AutoStart"	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
53	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua
18	api.2ip.ua

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
2032	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
2032	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
4076	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
4076	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 4224	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	88
PID 4556 wrote to memory of 4224	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	88
PID 4556 wrote to memory of 4224	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	88
PID 4556 wrote to memory of 2032	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	90
PID 4556 wrote to memory of 2032	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	90
PID 4556 wrote to memory of 2032	4556	20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe	90

C:\Users\Admin\AppData\Local\Temp\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
"C:\Users\Admin\AppData\Local\Temp\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4556
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\7a75336b-dddc-43dc-9859-55780a4438b0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:4224
- C:\Users\Admin\AppData\Local\Temp\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
  "C:\Users\Admin\AppData\Local\Temp\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2032

C:\Users\Admin\AppData\Local\7a75336b-dddc-43dc-9859-55780a4438b0\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe
C:\Users\Admin\AppData\Local\7a75336b-dddc-43dc-9859-55780a4438b0\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe --Task
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
001ce6a069f47780f3d91c6871e78a30

SHA1
d480ba721e1f34a7cda94244d1fdaedc9c191e66

SHA256
e17d5478d5d3c7e74acdc1c8171a5a9744b94a7201196550cdb0cb59da789c73

SHA512
39ad728fb60d64922b5642b4493991554bb1948001a429fb5de90ca1fa58320a5ac79f05b0267e1db1ab69bfde2d1d005f2c58215205c7e6720c93f6e3a65767

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
52f5c6ea10b226052c65e97285144c77

SHA1
3339fbfa8f645290b23cf9e0f6b8bd5b180deec7

SHA256
8d3390b1fda91eec75f121a3bfbe334290655ab0862ad4a79a26e3313317e0c5

SHA512
270d60265783f91a6462f87141b30e53046fce3f99928589c06371e3d02a14ae53e5bf3b8c8ccfa6306566f57419c761f14a0248aacb10f46a9b6017ace5712d

Download Submit
C:\Users\Admin\AppData\Local\7a75336b-dddc-43dc-9859-55780a4438b0\20240904591b5afb1f701910bb6b2a95e83b9f15stop.exe

Filesize
1.1MB

MD5
591b5afb1f701910bb6b2a95e83b9f15

SHA1
f3c0a74e0c38e75ec86195c83244831ae21cde58

SHA256
25fee0d9c2bf841ad0c0271a34e450d2a82dcc91d6fd7c669b9882fc436e06ea

SHA512
a66af28164683d16522e4c2a446ccaf1c9f64cbd743747c25359a2dc31e011683c1e852a829361ec61b9cdd7479114823fb684e28c7fa8754fd173f3c9b1f4ea

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads