djvu | 6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1

General

Target

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
Size

778KB
MD5

2dcb7ded7a0e7b8b644da24baed09cea
SHA1

02662c1b79c39c19598003fdc87484e399effe66
SHA256

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1
SHA512

aee68a79b711446a5e615c30e591a57fe7351803c6b9ac10cd686e5a9ae2774a4b906d7d8331d1ad77d1db206df9986bd3e0fdcfe8615ed8011fb248bc28351a
SSDEEP

12288:YolYAnEzaW7uSFx5KdJ98+yNr4jBLsg62LqnDj7AiVmQ3KyGatfj/G:YolqaW6SRKdf8+PZ62EAi4QKaNa

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 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2412-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp	family_djvu
behavioral1/memory/2076-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2076-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2076-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2076-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2076-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4764-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2664 icacls.exe

pid	process
2664	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1ca5eebe-f908-4981-9853-840a845c3131\\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe\" --AutoStart"	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.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

46 api.2ip.ua
26 api.2ip.ua
29 api.2ip.ua

flow	ioc
46	api.2ip.ua
26	api.2ip.ua
29	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

description	pid	process	target process
PID 2412 set thread context of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 set thread context of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.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:

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

pid	process
2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
4764	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
4764	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
"C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2412

C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
"C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2076

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\1ca5eebe-f908-4981-9853-840a845c3131" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2664

C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
"C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1240

C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
"C:\Users\Admin\AppData\Local\Temp\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4764

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

Query Registry

1

T1012

System Information Discovery

2

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
cb9e9c73d3688b51ee1899e25cd1cc7e

SHA1
b2d472d87ac099a708b7536b5c30e5e6f0d28b7e

SHA256
382e6d80f80afb665a9c3065602a8fb4a6c3ff73c06a0a6937ffc178466d97a2

SHA512
74f1d7c3c68c0ae4ebc7b1c270c2138f578b78b591d8c6af4b7bb56fd4f23e5cebdf9748e7045521c72c000e5a4f35adce8e62951470e65c531f95b26b52a54e

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
77a3da8b395ab4b8f531586254ce51b7

SHA1
941694a091f9a5c1eeac03444de584e2eba68fa8

SHA256
6e636604f30339f88615575ec77097a654eb62fff1cdebb512189e7ab9b27862

SHA512
eae4c589af2387e97412de34ac883c7aa6d999501591494bea308e5b403169bb21c05208ca9d6c038ea1fd07cdd76b6890e9f49cc4c067a3d8c65d1f00203af6

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

MD5
227870de966c7f833282c09bba90850c

SHA1
8c96cf7a3d30a92dc3247ce7c6c337908a1d2b35

SHA256
18acc91bed4e142985e01a376f0e5ad12dfaf5cf82eda531a92ba68c8ce7e3b1

SHA512
6a8ac1abecb5c73c9c363045d468cd5434c382a22a4a3fce8e08baf7cf998ea16b2cba1d5ad56660f162a960e14749776228aa0d7b2b8941d4760c0ad4dd758c

Download Submit
C:\Users\Admin\AppData\Local\1ca5eebe-f908-4981-9853-840a845c3131\6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
Filesize
778KB

MD5
2dcb7ded7a0e7b8b644da24baed09cea

SHA1
02662c1b79c39c19598003fdc87484e399effe66

SHA256
6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1

SHA512
aee68a79b711446a5e615c30e591a57fe7351803c6b9ac10cd686e5a9ae2774a4b906d7d8331d1ad77d1db206df9986bd3e0fdcfe8615ed8011fb248bc28351a

Download Submit
memory/1240-18-0x00000000031A0000-0x000000000323F000-memory.dmp

Filesize
636KB

Download
memory/2076-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2412-1-0x0000000003110000-0x00000000031A6000-memory.dmp

Filesize
600KB

Download
memory/2412-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp

Filesize
1.1MB

Download
memory/4764-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4764-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2412 wrote to memory of 2076	2412	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2076 wrote to memory of 2664	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	icacls.exe
PID 2076 wrote to memory of 2664	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	icacls.exe
PID 2076 wrote to memory of 2664	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	icacls.exe
PID 2076 wrote to memory of 1240	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2076 wrote to memory of 1240	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 2076 wrote to memory of 1240	2076	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe
PID 1240 wrote to memory of 4764	1240	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe	6ff994141c5099b53ae72f54db2787c9aa2c7dba52bcbb4cd9962e740fba7eb1.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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