djvu | d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8

General

Target

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
Size

730KB
MD5

bcd18bf62d2ff2f57c6d7d5066460629
SHA1

18abd83784f6f4eeee4f3567a73e4c20e57bf566
SHA256

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8
SHA512

844e4a8fb79babb3ca734135db0d76f11a2cfa662c587f0458a000ab0531ecc3fe2daaafb8fac5fab309daf40c9be809d3b48661b8afbc5cb1e1f8fa6fecf63e
SSDEEP

12288:wkXhj8GLAOSo9xYkrTjSoDWDTI44NBXAkB8pff4wRym44lA+OColnxsUL5ruQM:FX+2BSoLD/miOI4IBXAjfHfZlodiUL5Q

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3904-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2764-3-0x0000000004B40000-0x0000000004C5B000-memory.dmp	family_djvu
behavioral2/memory/3904-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3904-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3904-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3904-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-37-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

2604 icacls.exe

pid	process
2604	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0faf35e5-bd6c-4f19-9a73-f9661e9c912d\\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe\" --AutoStart"	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.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.

Processes:

flow ioc

7 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

flow	ioc
7	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exed0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

description	pid	process	target process
PID 2764 set thread context of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 set thread context of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exed0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

pid	process
3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
964	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
964	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exed0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exed0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
"C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2764

C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
"C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3904

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\0faf35e5-bd6c-4f19-9a73-f9661e9c912d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2604

C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
"C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1772

C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
"C:\Users\Admin\AppData\Local\Temp\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:964

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
3df6ebd5485c341249b0146a5c83243a

SHA1
74ca265a501faa8f8c2c39006def542b2d3ccc90

SHA256
6b021d12e3ec998cecde8b52012a88e71577c774d7f79e2384d8bca3e45f8565

SHA512
8706d61a625e7904f326b42711af8bc89a45e13063149dcd75cd4a02a0e755b19253bebba8a7c27dd95a1636008c24fb491e512f67e7f5d2da8f9c1f561b25f9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
be56c9c1be58963dd109d47f77bc2ef7

SHA1
13e0a874fb2f6f74ff864e2842905f6e25428889

SHA256
43113e1315bc4f16cbc623f528c363c53303f70d2f1fa7fe451ec09169ffcecd

SHA512
a4001c7126b7b62081d6f01aeae097b808d6d2e96ce8b2efbeafe4539c133fdeb7c07fbee21d05830aca44f17c43362333c2be7f4bae2f3a85e78d60fbd85f93

Download Submit
C:\Users\Admin\AppData\Local\0faf35e5-bd6c-4f19-9a73-f9661e9c912d\d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
Filesize
730KB

MD5
bcd18bf62d2ff2f57c6d7d5066460629

SHA1
18abd83784f6f4eeee4f3567a73e4c20e57bf566

SHA256
d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8

SHA512
844e4a8fb79babb3ca734135db0d76f11a2cfa662c587f0458a000ab0531ecc3fe2daaafb8fac5fab309daf40c9be809d3b48661b8afbc5cb1e1f8fa6fecf63e

Download Submit
memory/964-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/964-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-3-0x0000000004B40000-0x0000000004C5B000-memory.dmp

Filesize
1.1MB

Download
memory/2764-1-0x0000000004AA0000-0x0000000004B35000-memory.dmp

Filesize
596KB

Download
memory/3904-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3904-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3904-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3904-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3904-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 2764 wrote to memory of 3904	2764	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 3904 wrote to memory of 2604	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	icacls.exe
PID 3904 wrote to memory of 2604	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	icacls.exe
PID 3904 wrote to memory of 2604	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	icacls.exe
PID 3904 wrote to memory of 1772	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 3904 wrote to memory of 1772	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 3904 wrote to memory of 1772	3904	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe
PID 1772 wrote to memory of 964	1772	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe	d0b89f08dcfb3b9005c5e446ff69e3f1b83196d77c1b8d865cdc4297b1a795f8.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads