djvu | cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e

General

Target

2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe
Size

1.1MB
MD5

5230bc2f8f129c1cdcaa87821ef38b6d
SHA1

94c4e81a6d6ed0bc98ed7448cf60c3d2142ef32e
SHA256

cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e
SHA512

817b0ce33b9c4f1f944048f10226295664636ddce01190041c7660652ab054b6fb43a940c4d39ee06ac7ba0dc57b47ba9e0e757aa83dce1c07ab38afed8d1663
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8WWQHUq7:F0dwAYZt6C31WeTVRPOhW7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0874PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015b50-16.dat	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2552	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\20fb1a85-b167-45e9-9d3f-4208060e54a5\\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe\" --AutoStart"	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.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.

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe
2692	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2552	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	28
PID 2908 wrote to memory of 2552	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	28
PID 2908 wrote to memory of 2552	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	28
PID 2908 wrote to memory of 2552	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	28
PID 2908 wrote to memory of 2692	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	29
PID 2908 wrote to memory of 2692	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	29
PID 2908 wrote to memory of 2692	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	29
PID 2908 wrote to memory of 2692	2908	2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\20fb1a85-b167-45e9-9d3f-4208060e54a5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  PID:2552
- C:\Users\Admin\AppData\Local\Temp\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2692

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

System Information Discovery

1

T1082

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
2365869258df7a66a2121b802ca4afd9

SHA1
73acc30a2edeb9d6830de559bb8a74f35168135d

SHA256
d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed

SHA512
795004bab536e128dbd81c188976d37c7b650efbfa5a80374df4c65a1049c27658f4620b7605583928eb167fcb69b4c99e4c8730c507b824a7bde9c7fb0e21f4

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

Filesize
436B

MD5
1bfe0a81db078ea084ff82fe545176fe

SHA1
50b116f578bd272922fa8eae94f7b02fd3b88384

SHA256
5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

SHA512
37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

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

Filesize
174B

MD5
310c2b27b0256c7249c1ad28ac91bedd

SHA1
ab5e6d6e2c6fac0b8c780dab27d6601f48a0447d

SHA256
feb8b220f8fb70938a366c0e3a245584c6643aa70b9407d1424b19e731c6ab41

SHA512
2d4b8af7c178a7b4362a24eb4ec3be76183a4778b3a62d6fe6f49dbe8331e1495bb4c8665a7aea5c2608ec170a95b355deb3229675b800706bf49940e8cdeaf3

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
074566d2e08fbe19b4154fa9c633818c

SHA1
77453ceb9d6f71471a53c2ff8f9817f8d5d87b07

SHA256
50b7297233f2608fc0b2ef8442eb3139f988800d6d68baefc04e2e93e36cac47

SHA512
66c0d13c4ecba9ad97207e19d5b18c784f27cf04dc9c35eb558df11a7fab00a2c227ccc53c7bdf8af945b1102b467ec3793e86552fe4b2c7a7fab967f3cef6e0

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

Filesize
170B

MD5
4f937f2cf93cbe9f23fd694e6f06b4cd

SHA1
08bd8575583fbbdd0c04ea608446b35846e0b971

SHA256
0df8abcbac1402f86911a530bb77d134b8d5674e884fc556b18d1cecb641185d

SHA512
b04668353925a7102487555fc04b50a256dfa6c22550b5a480d56a67396341de6cacd41af144b0c953f6496ae86527aee8c8845d9ac90ed221a53e55af28eedd

Download Submit
C:\Users\Admin\AppData\Local\20fb1a85-b167-45e9-9d3f-4208060e54a5\2024-06-16_5230bc2f8f129c1cdcaa87821ef38b6d_stop.exe

Filesize
1.1MB

MD5
5230bc2f8f129c1cdcaa87821ef38b6d

SHA1
94c4e81a6d6ed0bc98ed7448cf60c3d2142ef32e

SHA256
cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e

SHA512
817b0ce33b9c4f1f944048f10226295664636ddce01190041c7660652ab054b6fb43a940c4d39ee06ac7ba0dc57b47ba9e0e757aa83dce1c07ab38afed8d1663

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab17D4.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads