djvu | 3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4

General

Target

3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
Size

809KB
MD5

c1fd2a8170047208eb02574949dc018b
SHA1

7d5dc3a9fe8622714b026e5838918b08eaabfbe1
SHA256

3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4
SHA512

4af844da25f12c76a5c2296698505dea45687452f1de6d330642c95ffede807cf1e7c99f6aae6ca0ff48be9269187f5b290baa073a67dd8dc4d394dcaa9efb3a
SSDEEP

12288:lMuYDQYZ+zX9YAq532vMqo5and/IxBo8sRkqFhLgObEmy41mBS/Xkkrkk:lDa9S94GoDFTQhLDbEbXBl

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/3948-2-0x0000000002450000-0x000000000256B000-memory.dmp	family_djvu
behavioral2/memory/3772-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3772-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3772-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3772-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3772-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3448-39-0x0000000000400000-0x0000000000537000-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

pid	Process
3520	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-1-5-21-2567984660-2719943099-2683635618-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c20e81b5-8cdc-45ab-b306-afeb71f89fd5\\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe\" --AutoStart"	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.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
1	api.2ip.ua
2	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3948 set thread context of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 4428 set thread context of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
3448	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
3448	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3948 wrote to memory of 3772	3948	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	76
PID 3772 wrote to memory of 3520	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	77
PID 3772 wrote to memory of 3520	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	77
PID 3772 wrote to memory of 3520	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	77
PID 3772 wrote to memory of 4428	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	78
PID 3772 wrote to memory of 4428	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	78
PID 3772 wrote to memory of 4428	3772	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	78
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81
PID 4428 wrote to memory of 3448	4428	3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe	81

C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
"C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
  "C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3772
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c20e81b5-8cdc-45ab-b306-afeb71f89fd5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3520
- - C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
    "C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4428
  - - C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe
      "C:\Users\Admin\AppData\Local\Temp\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3448

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\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
12d1e9a0a2e6fc46458e0421540cc14f

SHA1
4eca4e716e30c8a7fa5f30d81d48d3cecfbb11e8

SHA256
aac19422549e32666f971cc8485835c866f332d4bc323f6b85929615842ff25e

SHA512
b659af02260400ea9fd20388b998b2028d662006de5c10b3b18513ff4480591c4f4517eb5eeea4b6d8d5f472e3be1bb096201d13583ead1719b52a9d79d30ee1

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
c22ef1f074698b8258cc3771dc9c8820

SHA1
6e7f586a82624b7437c4356d0e3b2579460a33b8

SHA256
f8914cb9dce8a6b2e2b15d01f94d22f7b191ddca9963cd91c81d336e34d842d7

SHA512
2a644694bba0b3b6e032f1fab5c6f8c63b0985e2d9d63f69b69fd6bf8411c04638257976ca619900c7e101203db4e5ec85da1900cd140ac0dcc08e0f185dace3

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

Filesize
392B

MD5
86ba0d203758798fdf11890f7c6d36d1

SHA1
f903df3a35657b0ebc5bc75b8da9c8486539fb5f

SHA256
fdebe191a17bf5630a16ddedbfa4c02208363778f78e8df52695fc26344a52eb

SHA512
c99de0b270142e7f7fb51f47cb4dfde11188d12f54671ae0b393b0b72d3dd1331329d7394b6196a918dd710c59d9739845ae37964f9645b55f6d2ecde2cf93e4

Download Submit
C:\Users\Admin\AppData\Local\c20e81b5-8cdc-45ab-b306-afeb71f89fd5\3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4.exe

Filesize
809KB

MD5
c1fd2a8170047208eb02574949dc018b

SHA1
7d5dc3a9fe8622714b026e5838918b08eaabfbe1

SHA256
3b3c9171ab450a4e1b55f1ec69b0c5de4ce2bbbeb52655ac73e6d2174ddcd5d4

SHA512
4af844da25f12c76a5c2296698505dea45687452f1de6d330642c95ffede807cf1e7c99f6aae6ca0ff48be9269187f5b290baa073a67dd8dc4d394dcaa9efb3a

Download Submit
memory/3448-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3448-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3772-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3772-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3772-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3772-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3772-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-2-0x0000000002450000-0x000000000256B000-memory.dmp

Filesize
1.1MB

Download
memory/3948-1-0x00000000023B0000-0x000000000244D000-memory.dmp

Filesize
628KB

Download
memory/4428-22-0x0000000002260000-0x00000000022FA000-memory.dmp

Filesize
616KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads