djvu | 76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6

General

Target

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
Size

774KB
MD5

6c79509cb1dc8f982b6b8f7deed98a00
SHA1

7d9037f74c750296ef00320cf86018759aa9a7ce
SHA256

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6
SHA512

7994281fd7a745fa5f96d5e2dab9021daf4bb29555b97004fd05e6cd82c461936326430fc3683ee86151177d1940fe20adab1d76226654fa465afd3e1307e3a9
SSDEEP

12288:32/iDq9TcMt+4irSm1zoP+uKLiTkxQODS9S9orhM+H6ZCcAz:32/2Ic14szmKLiTUQ8SIoLgC3

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/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. 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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4584-3-0x0000000002810000-0x000000000292B000-memory.dmp	family_djvu
behavioral2/memory/3544-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3544-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3544-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3544-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3544-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2456-39-0x0000000000400000-0x0000000000537000-memory.dmp	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

Processes:

icacls.exe

pid process

1092 icacls.exe

pid	process
1092	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\736c70f5-172d-4d3d-b976-9c2fe62d32ff\\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe\" --AutoStart"	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.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
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

description	pid	process	target process
PID 4584 set thread context of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 set thread context of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

pid	process
3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
2456	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
2456	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
"C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
  "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\736c70f5-172d-4d3d-b976-9c2fe62d32ff" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1092
- - C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
    "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1328
  - - C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
      "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2456

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
cb9e9c73d3688b51ee1899e25cd1cc7e

SHA1
b2d472d87ac099a708b7536b5c30e5e6f0d28b7e

SHA256
382e6d80f80afb665a9c3065602a8fb4a6c3ff73c06a0a6937ffc178466d97a2

SHA512
74f1d7c3c68c0ae4ebc7b1c270c2138f578b78b591d8c6af4b7bb56fd4f23e5cebdf9748e7045521c72c000e5a4f35adce8e62951470e65c531f95b26b52a54e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
5659d3db0dbec402d2abfb1ccd6ea757

SHA1
1fe30516528e496e3dd8ff0a77af5fbc6c740687

SHA256
2ee48aa6b4e80047001027d2abd32a03d22a1064db6320c96d905fd466137872

SHA512
15ee78a8351dc278f78c1810ba8bb76eb8fbb401b0d06ced052e1ddff9ffd190dca6ea6735793ca60230a4c0eaeb18ce5182fdf70944975fc6b3fee468ca0667

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
ae81a76c36000257995058249ca61fee

SHA1
21db96fe1929c8ca646430a702798013bb802993

SHA256
7c769b6ba739ed72aea903754c8b8ba7b284dba6f8660ef93fc6cd4372e728a1

SHA512
6646a2e0d5c2725959b4be7b4c6c88c23a4c429ba042df67cf8288101a267b42cfc08f07b6b2fb3b32d772fa559cd8671ac29d1c46f1f5bbe4ddcdadcf897c37

Download Submit
C:\Users\Admin\AppData\Local\736c70f5-172d-4d3d-b976-9c2fe62d32ff\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Filesize
774KB

MD5
6c79509cb1dc8f982b6b8f7deed98a00

SHA1
7d9037f74c750296ef00320cf86018759aa9a7ce

SHA256
76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6

SHA512
7994281fd7a745fa5f96d5e2dab9021daf4bb29555b97004fd05e6cd82c461936326430fc3683ee86151177d1940fe20adab1d76226654fa465afd3e1307e3a9

Download Submit
memory/1328-21-0x0000000002560000-0x00000000025F9000-memory.dmp

Filesize
612KB

Download
memory/2456-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3544-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3544-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3544-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3544-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3544-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4584-1-0x0000000002750000-0x00000000027F1000-memory.dmp

Filesize
644KB

Download
memory/4584-3-0x0000000002810000-0x000000000292B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4584 wrote to memory of 3544	4584	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 3544 wrote to memory of 1092	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 3544 wrote to memory of 1092	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 3544 wrote to memory of 1092	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 3544 wrote to memory of 1328	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 3544 wrote to memory of 1328	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 3544 wrote to memory of 1328	3544	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 1328 wrote to memory of 2456	1328	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads