djvu | 2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

General

Target

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
Size

762KB
MD5

03cea6f6022a3a08d1ea003091a3e502
SHA1

643e34573258d1511921c8d97a5b3c26d6c70b62
SHA256

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2
SHA512

560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42
SSDEEP

12288:e2ZPFVL/YNfMNwpo4id34UcFg522Af3mhQIDBYHJD9wICzXXRXGoKU:e2tcMNqo3/c+52TvsQ0CjCdKU

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4168-2-0x0000000005EB0000-0x0000000005FCB000-memory.dmp	family_djvu
behavioral2/memory/4732-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4732-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4732-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4732-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4732-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2832-39-0x0000000000400000-0x0000000000537000-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:

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3424 icacls.exe

pid	process
3424	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cd79e172-f4c0-4dad-b123-e528077db5f7\\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe\" --AutoStart"	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.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

8 api.2ip.ua
9 api.2ip.ua
35 api.2ip.ua

flow	ioc
8	api.2ip.ua
9	api.2ip.ua
35	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

description	pid	process	target process
PID 4168 set thread context of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 set thread context of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.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:

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

pid	process
4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
2832	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
2832	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
"C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4168

C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
"C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4732

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\cd79e172-f4c0-4dad-b123-e528077db5f7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3424

C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
"C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1756

C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
"C:\Users\Admin\AppData\Local\Temp\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2832

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
f8ed6292d6d2f9514668acec50849d17

SHA1
482745d97c48b32fd986e488d169ac4eb7edd737

SHA256
a7760866eaf849b079815652f9dce9eb9ec7c599199bc65c7030ca9e2ed91c26

SHA512
ebc265c4a27c4a1d14ef783b28f3cb0de9ca4f28795078c3d80bf2ec6574c4e8f3f3c7c68197b1ea6f037cb88268cfab99817660f442696167120bc6275cad4f

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
3b1a4141ebf93b2a9239243e8ff6e132

SHA1
57bcbe363bbe59697ee6f28d05a618faae47f10f

SHA256
8b38dde75c60835296722980c9195b48c40c647575b82495baa4c9b13c363a18

SHA512
92b398c70535e712a267db2add817e5d03d29b93c2b97375e6a1377cb68f09a638a93dccfad6a0b3da006192697f78b14fcf387123580853cbad71445d242476

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

MD5
e3770a4866237b8512a2bedc288cfba9

SHA1
e5381facb43549febdd42f0ba6e02b0e047e5f6f

SHA256
a69528bb67182e7f849a6c4c5bccb5f1916cac9b071024565d9bc5581cca425e

SHA512
81e9772a7a7febbf0753e53be5d993d4ccb3b5cd0d5b3bf3d815a5722c3f94d77a908ae85ed16f61ca566f659ab32bade721adfe235822199c17f5ce434e0cfa

Download Submit
C:\Users\Admin\AppData\Local\cd79e172-f4c0-4dad-b123-e528077db5f7\2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
Filesize
762KB

MD5
03cea6f6022a3a08d1ea003091a3e502

SHA1
643e34573258d1511921c8d97a5b3c26d6c70b62

SHA256
2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

SHA512
560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42

Download Submit
memory/1756-20-0x0000000004210000-0x00000000042AD000-memory.dmp

Filesize
628KB

Download
memory/2832-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4168-1-0x0000000004240000-0x00000000042D4000-memory.dmp

Filesize
592KB

Download
memory/4168-2-0x0000000005EB0000-0x0000000005FCB000-memory.dmp

Filesize
1.1MB

Download
memory/4732-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4732-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4732-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4732-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4732-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4168 wrote to memory of 4732	4168	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4732 wrote to memory of 3424	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	icacls.exe
PID 4732 wrote to memory of 3424	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	icacls.exe
PID 4732 wrote to memory of 3424	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	icacls.exe
PID 4732 wrote to memory of 1756	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4732 wrote to memory of 1756	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 4732 wrote to memory of 1756	4732	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe
PID 1756 wrote to memory of 2832	1756	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe	2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads