djvu | cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
16-06-2024 00:50

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General

Target

567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.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

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

Processes:

resource yara_rule

C:\Users\Admin\AppData\Local\08592f9f-22f0-44f5-8a6b-42a245d2cff1\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe family_djvu
Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

resource	yara_rule
C:\Users\Admin\AppData\Local\08592f9f-22f0-44f5-8a6b-42a245d2cff1\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	family_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:

567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1072 icacls.exe

pid	process
1072	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\08592f9f-22f0-44f5-8a6b-42a245d2cff1\\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe\" --AutoStart"	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.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
2 api.2ip.ua
23 api.2ip.ua
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
23	api.2ip.ua

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

pid	process
2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
2660	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
2660	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

description	pid	process	target process
PID 2568 wrote to memory of 1072	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	icacls.exe
PID 2568 wrote to memory of 1072	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	icacls.exe
PID 2568 wrote to memory of 1072	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	icacls.exe
PID 2568 wrote to memory of 2660	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
PID 2568 wrote to memory of 2660	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
PID 2568 wrote to memory of 2660	2568	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe	567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe

C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
"C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2568

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\08592f9f-22f0-44f5-8a6b-42a245d2cff1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
2⤵
- Modifies file permissions
PID:1072

C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
"C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe" --Admin IsNotAutoStart IsNotTask
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:2660

Network

MITRE ATT&CK Matrix ATT&CK v13

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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
0150c22702745d9b48d775839b972063

SHA1
a29188cf8e687a4f0dc572b54a6ed41af8c255c8

SHA256
06d4c1282690ee3014915c862c15db6ad3c403011f2a29f2cd0314616773bbb8

SHA512
25c1b97e518efbc0211a09dc5872a224fa0b22bc519f2c6734add2f139bc0021152f6be97a4fd3b8389c4f47d668f2a8727c4333d4820baa153d209754f4faf9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize
170B

MD5
426473922667739b836d9608bf6072ba

SHA1
c4e653e850a1eb7e00c1b0c087f469516a499cdd

SHA256
d30e9458759ecf3d1a6e17c2cffcbce423b2ccfda88249c6fdbcad9d94421e6f

SHA512
8c84d7608ed29103b265ad5201c8270650d3e8d5626f431c71fd95cb04c886a2291213ac8e29c4835dc9b244b1a7efb09c7fa774f65d55c468c37d0d2e20f10f

Download Submit
C:\Users\Admin\AppData\Local\08592f9f-22f0-44f5-8a6b-42a245d2cff1\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
Filesize
1.1MB

MD5
5230bc2f8f129c1cdcaa87821ef38b6d

SHA1
94c4e81a6d6ed0bc98ed7448cf60c3d2142ef32e

SHA256
cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e

SHA512
817b0ce33b9c4f1f944048f10226295664636ddce01190041c7660652ab054b6fb43a940c4d39ee06ac7ba0dc57b47ba9e0e757aa83dce1c07ab38afed8d1663

Download Submit