djvu | f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

Analysis

max time kernel
293s
max time network
151s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09-05-2024 00:08

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General

Target

f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
Size

810KB
MD5

00f5b90eb3c54429360443bce6322b6e
SHA1

d3234636627b6f6c746902897789ff8dc90845cb
SHA256

f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de
SHA512

e2ee443bdd902ad4e605489cee603b3f39a6dd832f9f80b3df04bcff6467965d06cfb777c95c4adea513c05b3d4e7e7fdd5141e3e8037aa3b5a189d46d8489c2
SSDEEP

12288:kdOcryILg/rbLbn8K5cdCVDVCsa94y2fGZZjz8QijcrUmNhz:OryIOrbcK5cdCVDIVGfYjz81QIm

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgjs
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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 13 IoCs

resource	yara_rule
behavioral1/memory/2108-2-0x0000000001AA0000-0x0000000001BBB000-memory.dmp	family_djvu
behavioral1/memory/1576-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1576-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1576-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1576-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2540-55-0x0000000000400000-0x0000000000537000-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
2664	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-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\71799775-674b-4f01-b116-ae6eac409161\\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe\" --AutoStart"	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2108 set thread context of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2148 set thread context of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
2540	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
2540	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2108 wrote to memory of 1576	2108	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1576 wrote to memory of 2664	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 1576 wrote to memory of 2664	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 1576 wrote to memory of 2664	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 1576 wrote to memory of 2664	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 1576 wrote to memory of 2148	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 1576 wrote to memory of 2148	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 1576 wrote to memory of 2148	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 1576 wrote to memory of 2148	1576	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2148 wrote to memory of 2540	2148	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31

C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
"C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
  "C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\71799775-674b-4f01-b116-ae6eac409161" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2664
- - C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
    "C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2148
  - - C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
      "C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2540

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

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Downloads

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

Filesize
1KB

MD5
980db886f2cbf3110b71813f1c55cca9

SHA1
a574aa7b6f0ae88191d135161b0329202957aba3

SHA256
ca3b546e0b8ceb8c92416dc5081dbe1f5ea28c80fc867078c966c981138b7cf6

SHA512
52a238e4ae4351b9a8074032a909fdf7b86da856f6fb430eec3fa58b6745a83a57d9a3e1c91f718ea102c131fb34230ebcb9ae8e32d86f84e75168975329abca

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
cdc1079c149c6d475b0e7a7ae2f0782f

SHA1
9cc16d6ce5cb50b0faaec7adceb1c74c0dd0e1fe

SHA256
eea9ebce791cb9dad357d8729f3734ce8c664b6e9ce346f0a0598e7172d2ec86

SHA512
02d2d013d8df7c107c97d8a31735fc0597ea05ed93deacc0d612153d199452a73cad0f7a2f3379a526cca2e8eb3adc4d5edb77741e015df09e713f0d681e6f0d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
a7af0b0d7610d177c99d0d230ef3760d

SHA1
51493b05254b5c13c4a9e3705de6b89c10664dc7

SHA256
d32387d62aba4bd28f95bc0cd8d0acacd7d2ceebb42ffb6a576d925face1344a

SHA512
71c55e9c0d051d14979ca69ddd9bffa8c3eb038575a49ff5863a5078757d1d9705f4fb7e98c4f87245cbeee981b0fa918d45514b2d4ce2dee018060ba98f5b30

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

Filesize
392B

MD5
a51e65d1d4a149187e08a39920fe589d

SHA1
e04e132b1117733c1dd3439adc7cf3098a69bb31

SHA256
071f99f5552c6d75fd1e9c60e198bb4b47dd87844d623de182eec2cc9c7e8d65

SHA512
3cb76361c3f74dc392c7090fb2a873ced782a1a814f6831bc5dbb04fa15fbf29923a93b6a3b50ee58c550b5d54897a7cdc8423126433cd7bfcce71e02f3a84f5

Download Submit
C:\Users\Admin\AppData\Local\71799775-674b-4f01-b116-ae6eac409161\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Filesize
810KB

MD5
00f5b90eb3c54429360443bce6322b6e

SHA1
d3234636627b6f6c746902897789ff8dc90845cb

SHA256
f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

SHA512
e2ee443bdd902ad4e605489cee603b3f39a6dd832f9f80b3df04bcff6467965d06cfb777c95c4adea513c05b3d4e7e7fdd5141e3e8037aa3b5a189d46d8489c2

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab251D.tmp

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
memory/1576-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1576-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2108-2-0x0000000001AA0000-0x0000000001BBB000-memory.dmp

Filesize
1.1MB

Download
memory/2108-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2108-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2108-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2148-30-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2540-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download