djvu | 0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 01:04

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
Size 763KB
Sample240425-be22jacf5s
SHA256 0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891
MD5 b0df4f1b7801ed3666e01ee888e4c2af
SHA1 d9cdc9cc4b68e351e2b14e42a8adb93210fe64b9
SHA512 a4686859c8a4988db89a35f783ca2888910b82e0d7feb7fe6860c0f8847f986495a7dc60d0a41ab4cb9ca1e1669aae5ce9c676fde97172bdf0cd1aca38edfb92
SSDEEP 12288:TYRyhbuqvTDFcqsn1Y5U8cko7OeKNojOErjUtcSGbv2DSWJu7Nfa+RHQSLsb2obE:ztHFcq0q59o7XkihOSWJs7LscVHyY1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

resource	yara_rule
behavioral2/memory/5100-2-0x0000000005F50000-0x000000000606B000-memory.dmp	family_djvu
behavioral2/memory/820-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/820-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/820-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/820-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/820-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3228-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1984	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-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\18d2023c-c5f6-4ebb-81b4-b381430165b6\\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe\" --AutoStart"	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.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
11	api.2ip.ua
14	api.2ip.ua
28	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5100 set thread context of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 4004 set thread context of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92

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
820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
3228	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
3228	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 5100 wrote to memory of 820	5100	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	85
PID 820 wrote to memory of 1984	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	89
PID 820 wrote to memory of 1984	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	89
PID 820 wrote to memory of 1984	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	89
PID 820 wrote to memory of 4004	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	90
PID 820 wrote to memory of 4004	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	90
PID 820 wrote to memory of 4004	820	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	90
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92
PID 4004 wrote to memory of 3228	4004	0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe	92

C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
"C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
  "C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\18d2023c-c5f6-4ebb-81b4-b381430165b6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1984
- - C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
    "C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4004
  - - C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
      "C:\Users\Admin\AppData\Local\Temp\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3228

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

Query Registry

T1012

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 a7760866eaf849b079815652f9dce9eb9ec7c599199bc65c7030ca9e2ed91c26
MD5 f8ed6292d6d2f9514668acec50849d17
SHA1 482745d97c48b32fd986e488d169ac4eb7edd737
SHA512 ebc265c4a27c4a1d14ef783b28f3cb0de9ca4f28795078c3d80bf2ec6574c4e8f3f3c7c68197b1ea6f037cb88268cfab99817660f442696167120bc6275cad4f
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 ed37bbd8ea2961f976628b330838a9df772ea770ee028a43275826e5bcd4a6cd
MD5 a6b2bdcc0c0f75c0d95dfe7cd2aa778d
SHA1 1ccbccdc1319e1edf14cab49fd0da8d49caade53
SHA512 5e85d8be063f986456e54c9a36a45e21284d91cd9b389e0795b9c67af116dc5ebc6c1a7614310c3e94c0a39164cc12a9f7a5c2078f2242ca21c322beb011ed1f
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 2c2cd6e86ac3cc7edb40f4cf9cd9bb73cad565e353a8e4345940e1c25ff7115d
MD5 5d925baff7149d435dce311f619fc901
SHA1 f29475caaee1acca783a0189cfe82c52f450805e
SHA512 f72b82df90567631165a26d7fe62ceabf1f53f53468cb5b680a1828f25087d38d8a628319ae4749ede58a143b5c8f9dcc05179b07efe8a5c5ea3a1fa39ec6725
MD5 SHA1 SHA512

Submit Download

0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe

Path C:\Users\Admin\AppData\Local\18d2023c-c5f6-4ebb-81b4-b381430165b6\0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891.exe
Size 763KB
SHA256 0b80ebd4dffd54e98c8dd781246d247546f9e47ca86eca4215b07d8631370891
MD5 b0df4f1b7801ed3666e01ee888e4c2af
SHA1 d9cdc9cc4b68e351e2b14e42a8adb93210fe64b9
SHA512 a4686859c8a4988db89a35f783ca2888910b82e0d7feb7fe6860c0f8847f986495a7dc60d0a41ab4cb9ca1e1669aae5ce9c676fde97172bdf0cd1aca38edfb92
SSDEEP 12288:TYRyhbuqvTDFcqsn1Y5U8cko7OeKNojOErjUtcSGbv2DSWJu7Nfa+RHQSLsb2obE:ztHFcq0q59o7XkihOSWJs7LscVHyY1
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/820-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/820-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/820-15-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/820-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/820-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-20-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-21-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3228-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4004-18-0x00000000041C0000-0x0000000004255000-memory.dmp

Download

memory/5100-2-0x0000000005F50000-0x000000000606B000-memory.dmp

Download

memory/5100-1-0x0000000004690000-0x0000000004727000-memory.dmp

Download