djvu | f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

Analysis

max time kernel
292s
max time network
152s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 22:47

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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/2156-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2156-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2156-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2156-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-54-0x0000000000400000-0x0000000000537000-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
2708	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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b449b867-c793-4384-9a87-4de0559d03dc\\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 1764 set thread context of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2616 set thread context of 2672	2616	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 2 IoCs

pid	Process
2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
2672	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 1764 wrote to memory of 2156	1764	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	28
PID 2156 wrote to memory of 2708	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 2156 wrote to memory of 2708	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 2156 wrote to memory of 2708	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 2156 wrote to memory of 2708	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	29
PID 2156 wrote to memory of 2616	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 2156 wrote to memory of 2616	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 2156 wrote to memory of 2616	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 2156 wrote to memory of 2616	2156	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	30
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	31
PID 2616 wrote to memory of 2672	2616	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:1764
- 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:2156
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b449b867-c793-4384-9a87-4de0559d03dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2708
- - 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:2616
  - - C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
      "C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2672

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
9ed6fed9b6e5aaa9afcba833c1b8c259

SHA1
2ed30daf7f0277a0718b3d9ce46b0658640cc2ba

SHA256
c90743b555faf3ed141c4c83e5002c4da6445c3be1ad82b01c98da2201cf6818

SHA512
a9abd9ca06479e56d08e1649b344cfd06beec24567d1053616670afd7f47757d7ab186c2cd20d21f53a901ede92b14382fc42ab21df6605d69702c0368106367

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
e8acf7443b1acf3cc79cbcb566772be5

SHA1
f5cd31801c972947d977564ba10928d179143c0f

SHA256
f909e2df152dfc8e6853f7caa492e8cfd30eb92095032c8b3214bc00e34796e5

SHA512
d1b57d19172eb95887236e875ad0b89185d16d924c9ea48af628aefed0dfb79ba6492b36c1f3c74609f953cb97550a32bb20fbf768bb987eb0ece9c9f62ec45a

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

Filesize
344B

MD5
ce4c7c2c99be48825ad97ed5d71cff4f

SHA1
72eb18c4b7c3437826693cd125654c6a1936a482

SHA256
7cc3a55cfa9f6ec400e387daffb694f4e7c2cf58f6a5b47bc95434b1b79a10ea

SHA512
6864df36869de4151510a2e88d86713f54dc510792abd2da2ad08c8309ed0b6ec85d688bd5f68475c3e74ac63d0e166fefaab2ee04f1bbdd695cd6a11062d412

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

Filesize
392B

MD5
8c11a922f5ef593d42b98990ab588514

SHA1
19d7d8901014b3a425613c19042178d268066b82

SHA256
d2ab6ba9f5373e04f0885c49b701ed1cada64648f2b257a57b9884d34be66824

SHA512
4e1febef5f019772e0b8f46b0038b343ee32fcb0ff607c734173e2076d1d282f848621f7df57b73f08a6428e95256e368fb60aceba85c1fed1ebebb0baa7db43

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2368.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\b449b867-c793-4384-9a87-4de0559d03dc\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Filesize
810KB

MD5
00f5b90eb3c54429360443bce6322b6e

SHA1
d3234636627b6f6c746902897789ff8dc90845cb

SHA256
f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

SHA512
e2ee443bdd902ad4e605489cee603b3f39a6dd832f9f80b3df04bcff6467965d06cfb777c95c4adea513c05b3d4e7e7fdd5141e3e8037aa3b5a189d46d8489c2

Download Submit
memory/1764-4-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/1764-6-0x0000000001AA0000-0x0000000001BBB000-memory.dmp

Filesize
1.1MB

Download
memory/1764-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2156-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2156-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2156-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2156-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2156-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-29-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2672-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download