djvu | f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

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

C2

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 14 IoCs

resource	yara_rule
behavioral2/memory/3800-2-0x00000000037A0000-0x00000000038BB000-memory.dmp	family_djvu
behavioral2/memory/5112-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5112-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5112-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5112-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5112-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1568-36-0x0000000000400000-0x0000000000537000-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
2808	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-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e1b7f6ec-bff9-40ca-a4a1-73c660e38ed2\\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
1	api.2ip.ua
2	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3800 set thread context of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 4544 set thread context of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76

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
5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
1568	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
1568	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 3800 wrote to memory of 5112	3800	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	72
PID 5112 wrote to memory of 2808	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	73
PID 5112 wrote to memory of 2808	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	73
PID 5112 wrote to memory of 2808	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	73
PID 5112 wrote to memory of 4544	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	74
PID 5112 wrote to memory of 4544	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	74
PID 5112 wrote to memory of 4544	5112	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	74
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76
PID 4544 wrote to memory of 1568	4544	f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe	76

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:3800
- 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:5112
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e1b7f6ec-bff9-40ca-a4a1-73c660e38ed2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2808
- - 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:4544
  - - C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe
      "C:\Users\Admin\AppData\Local\Temp\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1568

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

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
422f9f2140d1afde50b4b033b9cdb0c0

SHA1
f2e7511151c5ad5290559f282f59bf630c6f8bb4

SHA256
5f55dc0bc2ddf50b010ee7d8197a94cbd2e70e89083fe52fbf070850b6a943d2

SHA512
ccecc2e8808d246034f482ded7e9319fad18f2e06444171330080d43e8f7973ba5e5ebfaefb2d5dcffdbb1ef64253c60b75c60555badd6d4f3945c462905528b

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

Filesize
392B

MD5
2abcb3f27d3d1dbb66c993b5596f89a3

SHA1
84387c6e5b9febcc943fd89e33f24815dd551875

SHA256
f488f7708c9c8e3aee0fc42e29601520d5a5b70ca14899211071035f33493100

SHA512
ecdf390cacdfe955d055d1865516c6638503c8cb3ffe34817d98b16cd6fb6bab6deb3ed2148b7852e61701c017343c14927e87777db9762ef2a38cba93578d81

Download Submit
C:\Users\Admin\AppData\Local\e1b7f6ec-bff9-40ca-a4a1-73c660e38ed2\f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de.exe

Filesize
810KB

MD5
00f5b90eb3c54429360443bce6322b6e

SHA1
d3234636627b6f6c746902897789ff8dc90845cb

SHA256
f0d3903bf6809f0f4e7a71a96a6ce9ab5b722a7587fa70adf9562b631192c7de

SHA512
e2ee443bdd902ad4e605489cee603b3f39a6dd832f9f80b3df04bcff6467965d06cfb777c95c4adea513c05b3d4e7e7fdd5141e3e8037aa3b5a189d46d8489c2

Download Submit
memory/1568-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3800-1-0x0000000001D60000-0x0000000001DF6000-memory.dmp

Filesize
600KB

Download
memory/3800-2-0x00000000037A0000-0x00000000038BB000-memory.dmp

Filesize
1.1MB

Download
memory/5112-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads