djvu | 1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3

General

Target

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
Size

749KB
MD5

e06d87e54a3bd5ba6460195d1806cc74
SHA1

27db620d9bfd3c21c9d2962fd34d07d401f88481
SHA256

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3
SHA512

b895df79a79d1fcbe6179a0c99d5689a29125ec1edc69d4512acd4184af40336dd5c3280d7960e55f932da6c8fc5dc2661315e7b3636e850b929ee1de9d14a64
SSDEEP

12288:6dfMqf6+Jrt961H5e+f1yU6cGwOqCYL5XNo6IWqUk5qpyNrf1Fk5bLzS7xSK:6dfMqNJraJLNCQG6zk5qpW9oW

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 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3716-2-0x0000000004A10000-0x0000000004B2B000-memory.dmp	family_djvu
behavioral2/memory/768-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/768-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/768-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/768-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/768-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4196-30-0x0000000000400000-0x0000000000537000-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

2188 icacls.exe

pid	process
2188	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293923083-2364846840-4256557006-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c05cb98b-ed5b-4242-b2ce-6f6012958659\\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe\" --AutoStart"	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 api.2ip.ua
5 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

description	pid	process	target process
PID 3716 set thread context of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 set thread context of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.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:

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

pid	process
768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
4196	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
4196	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
"C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3716

C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
"C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:768

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\c05cb98b-ed5b-4242-b2ce-6f6012958659" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2188

C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
"C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:896

C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
"C:\Users\Admin\AppData\Local\Temp\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4196

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

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Downloads

C:\Users\Admin\AppData\Local\c05cb98b-ed5b-4242-b2ce-6f6012958659\1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
Filesize
749KB

MD5
e06d87e54a3bd5ba6460195d1806cc74

SHA1
27db620d9bfd3c21c9d2962fd34d07d401f88481

SHA256
1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3

SHA512
b895df79a79d1fcbe6179a0c99d5689a29125ec1edc69d4512acd4184af40336dd5c3280d7960e55f932da6c8fc5dc2661315e7b3636e850b929ee1de9d14a64

Download Submit
memory/768-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/768-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/768-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/768-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/768-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3716-1-0x0000000003170000-0x0000000003208000-memory.dmp

Filesize
608KB

Download
memory/3716-2-0x0000000004A10000-0x0000000004B2B000-memory.dmp

Filesize
1.1MB

Download
memory/4196-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 3716 wrote to memory of 768	3716	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 768 wrote to memory of 2188	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	icacls.exe
PID 768 wrote to memory of 2188	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	icacls.exe
PID 768 wrote to memory of 2188	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	icacls.exe
PID 768 wrote to memory of 896	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 768 wrote to memory of 896	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 768 wrote to memory of 896	768	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe
PID 896 wrote to memory of 4196	896	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe	1d73c1778a0f9a661b1d32f4703b8aab30d3d764519ce44dacc2a73ece4723a3.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads