djvu | 0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f

General

Target

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
Size

1.1MB
MD5

86dbb6ed19cb1e8f2da1c3dfa22f32b0
SHA1

528ac12a59b58fab81b25500384a65e5d6d23a84
SHA256

0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f
SHA512

e2e9bb68dd565b530cf451d5a7e37f66c110859126407eb1c12ffb8ec5f05cd36cc7fc931cf69e290b0901834c4530d372fec3c4f0c76c16fdf7f0459ff57b61
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8OWQHUq7:F0dwAYZt6C31WeTVRPOhO7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://rlrz.org/lancer/get.php

Attributes

extension
.rivd
offline_id
WbO7bkwHxaepEmevfYYUBNgcxNJGpd7hoNKokRt1
payload_url
http://znpst.top/dl/build2.exe

http://rlrz.org/files/1/build3.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-CcXGxzXf71 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: 0342gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x000300000002327a-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

Processes:

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
2608	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d7b2b7ba-9b7b-410b-bcc0-0543babc130b\\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe\" --AutoStart"	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Looks up external IP address via web service 3 IoCs

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

Processes:

flow	ioc
1	api.2ip.ua
3	api.2ip.ua
10	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 3 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

Processes:

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exeicacls.exe2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

pid	Process
2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
4248	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
4248	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

description	pid	Process	procid_target
PID 2356 wrote to memory of 2608	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	86
PID 2356 wrote to memory of 2608	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	86
PID 2356 wrote to memory of 2608	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	86
PID 2356 wrote to memory of 4248	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	87
PID 2356 wrote to memory of 4248	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	87
PID 2356 wrote to memory of 4248	2356	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	87

C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.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:2356
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\d7b2b7ba-9b7b-410b-bcc0-0543babc130b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4248

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
828a1427db0a08f0bc9f071ff4e8ef3c

SHA1
044b181642e1ccd9b5d5f356b626a12721eabcda

SHA256
029648df588177deb9f1b2c99cc0bdb37f6c1d45ab26c4e8af613da8f92f5d19

SHA512
77ab11513137bb9116cd2daf25335ef9b13b8f57a9ffa481e8f1fa08bb24c54c26c177bc59cc7517f3b89ebe394d4ed9108b7423729b34f17f9b20167b6fdf7c

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

Filesize
170B

MD5
55cd8d3c1fa84cfade66247978a0cf1c

SHA1
0ed95ac216f03d1fd7e9519ac2e036fb76f6a77a

SHA256
b78bdde47bb85a02211547252d1e86fa3cb59d9e54df657f82e53fc48f0997a3

SHA512
953c54c1689e6d4f94e7d8d00ec15c06a975471f9851410bab677b1afff3c456d377ff2e65568b6ec961458274bbba5b25740b4649143292558f448eeb699613

Download Submit
C:\Users\Admin\AppData\Local\d7b2b7ba-9b7b-410b-bcc0-0543babc130b\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Filesize
1.1MB

MD5
86dbb6ed19cb1e8f2da1c3dfa22f32b0

SHA1
528ac12a59b58fab81b25500384a65e5d6d23a84

SHA256
0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f

SHA512
e2e9bb68dd565b530cf451d5a7e37f66c110859126407eb1c12ffb8ec5f05cd36cc7fc931cf69e290b0901834c4530d372fec3c4f0c76c16fdf7f0459ff57b61

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads