djvu | 481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6

General

Target

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
Size

810KB
MD5

2a82c8bb3b8107fdac0434f9b5ac9a88
SHA1

85c45b04a28b20b2eb2a048c185f708b665b564e
SHA256

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6
SHA512

e484889351e4f2bc5b03d8b71a61d560eed8ca5a53efa5cc94b7aa7501d1ec449cf436c7b2522421cc3f72be8bb1907ce3861072fc676d3c0f3f9d587ec9efa4
SSDEEP

12288:DeVKUeJSdJ7Nj/iXFE1yAnUPODnYdziCx+qiczyCc+HQ99wYCurUHLh+eMd:DdgdJhriVtYaOD+23K+T+JYCurU1XMd

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: support@freshingmail.top Reserve e-mail address to contact us: datarestorehelpyou@airmail.cc Your personal ID: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2752-2-0x0000000003850000-0x000000000396B000-memory.dmp	family_djvu
behavioral2/memory/4496-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-13-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4768-31-0x0000000000400000-0x0000000000537000-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

2096 icacls.exe

pid	process
2096	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\90eaf02e-09d5-4d30-bea0-1403927b174c\\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe\" --AutoStart"	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.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

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

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

description	pid	process	target process
PID 2752 set thread context of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 set thread context of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.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:

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

pid	process
4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
4768	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
4768	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
"C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2752

C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
"C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4496

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\90eaf02e-09d5-4d30-bea0-1403927b174c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2096

C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
"C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4240

C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
"C:\Users\Admin\AppData\Local\Temp\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4768

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\90eaf02e-09d5-4d30-bea0-1403927b174c\481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
Filesize
810KB

MD5
2a82c8bb3b8107fdac0434f9b5ac9a88

SHA1
85c45b04a28b20b2eb2a048c185f708b665b564e

SHA256
481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6

SHA512
e484889351e4f2bc5b03d8b71a61d560eed8ca5a53efa5cc94b7aa7501d1ec449cf436c7b2522421cc3f72be8bb1907ce3861072fc676d3c0f3f9d587ec9efa4

Download Submit
memory/2752-2-0x0000000003850000-0x000000000396B000-memory.dmp

Filesize
1.1MB

Download
memory/2752-1-0x0000000001C70000-0x0000000001D0B000-memory.dmp

Filesize
620KB

Download
memory/4240-14-0x0000000001C70000-0x0000000001D04000-memory.dmp

Filesize
592KB

Download
memory/4496-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-13-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4768-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 2752 wrote to memory of 4496	2752	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4496 wrote to memory of 2096	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	icacls.exe
PID 4496 wrote to memory of 2096	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	icacls.exe
PID 4496 wrote to memory of 2096	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	icacls.exe
PID 4496 wrote to memory of 4240	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4496 wrote to memory of 4240	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4496 wrote to memory of 4240	4496	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe
PID 4240 wrote to memory of 4768	4240	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe	481e68e427981da864ebbf7d2babb30b8e2948e4f39f3835d88c5904f32a50e6.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads