djvu | ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86

Analysis

max time kernel
297s
max time network
299s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
08/05/2024, 00:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
Size 773KB
Sample240508-avt57agh7y
SHA256 ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86
MD5 b79f8467119b07908bf7a543263dd90f
SHA1 7b01cca11b53e285e6d7a437b2b3d2660ac3d92c
SHA512 7ce2cedc34594e2a31f131d293162a367fbdf422d946ad2664295a634c66493edb763e7685354c91b024304a227b1b3230300cb84da6bc7239ddac820926ce7f
SSDEEP 12288:lHctDLy1m0jxuUylxSywAawInWIXSfBUbuTplj668TTLj9pLUQdN:lHuDm1RQL10ZXSf8pvwQd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/4768-4-0x0000000004810000-0x000000000492B000-memory.dmp	family_djvu
behavioral2/memory/600-1-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/600-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/600-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/600-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/600-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4884-36-0x0000000000400000-0x0000000000537000-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
4112	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-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\affe23fb-c95b-4428-83b0-af6bf919c691\\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe\" --AutoStart"	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.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
11	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4768 set thread context of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 992 set thread context of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78

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
600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
4884	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
4884	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 4768 wrote to memory of 600	4768	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	74
PID 600 wrote to memory of 4112	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	75
PID 600 wrote to memory of 4112	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	75
PID 600 wrote to memory of 4112	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	75
PID 600 wrote to memory of 992	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	76
PID 600 wrote to memory of 992	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	76
PID 600 wrote to memory of 992	600	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	76
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78
PID 992 wrote to memory of 4884	992	ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe	78

C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
"C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
  "C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:600
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\affe23fb-c95b-4428-83b0-af6bf919c691" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4112
- - C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
    "C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:992
  - - C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
      "C:\Users\Admin\AppData\Local\Temp\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 26f7df2742be7eae0cecb3954ab69d2f1ad25c6b63a21e3a477ea34dee8301ae
MD5 af14424bd91fa356e225129fe451aacc
SHA1 4046dc95051bf8382196ff1fec36326c22dc1aae
SHA512 362068ce189ee00c318b574ebc8fc4f2e09add21f6c79aea8fe2f69ece44c0beaeb6c7fec7297a0b758ea5b8879ab0e9993c74ab262e200e289c05833e734179
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 0923497f62a3c89e90665f0e64e7e9fe34f439bc88d4227b7e62c2b41958d25d
MD5 5f3b65343754fbd933276c58e30e11ac
SHA1 d1eff2c5b0d7db7246b0e0b342b70c71d0d96f47
SHA512 406696abdeefed5824be91765eb50f6ed4b93416abe0603b8718b82f44e9a2323a451e23d26cd5b78b260b8f6f5ec0126a57578a9c6f936d786c8655961f3fe2
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 94100ff5a7672de352064e938f43a0f2ff90351f33dc8a24fc85303f05233fd1
MD5 2ee69875469d732351b5358bd2b20a62
SHA1 591628bdcb91d84592b31dc30eb9fae72befc9ab
SHA512 36e106d2f683ea9e889e5466a5e39dc6dd55b5b0df49ac27d8aaddf46fd8c5da093f608bc1139b8415304eee17cdf9a0163660ab0c54075811e7ab7e091ebcc4
MD5 SHA1 SHA512

Submit Download

ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe

Path C:\Users\Admin\AppData\Local\affe23fb-c95b-4428-83b0-af6bf919c691\ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86.exe
Size 773KB
SHA256 ff102b2757802f5ccf4785977fb94abcd5e91118c9d2428d29d9fe0b47ee2c86
MD5 b79f8467119b07908bf7a543263dd90f
SHA1 7b01cca11b53e285e6d7a437b2b3d2660ac3d92c
SHA512 7ce2cedc34594e2a31f131d293162a367fbdf422d946ad2664295a634c66493edb763e7685354c91b024304a227b1b3230300cb84da6bc7239ddac820926ce7f
SSDEEP 12288:lHctDLy1m0jxuUylxSywAawInWIXSfBUbuTplj668TTLj9pLUQdN:lHuDm1RQL10ZXSf8pvwQd
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/600-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/600-1-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/600-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/600-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/600-2-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4768-3-0x0000000002D80000-0x0000000002E15000-memory.dmp

Download

memory/4768-4-0x0000000004810000-0x000000000492B000-memory.dmp

Download

memory/4884-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-33-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-31-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4884-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download