djvu | 6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347

General

Target

6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
Size

743KB
MD5

ab7f5c6b0c187e475ea5ae7e42de2d3c
SHA1

7b4c3f5e22bfab8cdb856f90496fb70554ae0cfe
SHA256

6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347
SHA512

20f7818183b53f7f339bef38bfe0c94794c087d9f0750ae558c09c11c5527272de67a95f3e548ed819045852b0403932ff36d9f8ec0cc881faa31ad45345cbc6
SSDEEP

12288:sX6KW8Cr/nrSwPcmV4eIwNn5x5vQWHXvZB9w5dPQ8i:sX1YrPuwPtRpn5x5vQWRE5dPa

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/4440-2-0x0000000004430000-0x000000000454B000-memory.dmp	family_djvu
behavioral2/memory/712-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/712-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/712-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/712-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/712-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2132-37-0x0000000000400000-0x0000000000537000-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

pid	Process
2632	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\61cee82b-c4a1-4ff0-bb12-2843a6d148f9\\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe\" --AutoStart"	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.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.

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4440 set thread context of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 1792 set thread context of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
2132	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
2132	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 4440 wrote to memory of 712	4440	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	81
PID 712 wrote to memory of 2632	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	82
PID 712 wrote to memory of 2632	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	82
PID 712 wrote to memory of 2632	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	82
PID 712 wrote to memory of 1792	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	83
PID 712 wrote to memory of 1792	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	83
PID 712 wrote to memory of 1792	712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	83
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86
PID 1792 wrote to memory of 2132	1792	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	86

C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
"C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
  "C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:712
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\61cee82b-c4a1-4ff0-bb12-2843a6d148f9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2632
- - C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
    "C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
      "C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
f7948be4dd99f99a9201e9dd802810f3

SHA1
1d87527a12a74ad985f780b9bf5c4cfe63758574

SHA256
b922312400a73d8a80b802c5abd18ecfceae218632991d24e9af6a5ff2e167f1

SHA512
8633b7ce51bb4f1656c1884595fccadf52fe527c80adac7a73c05f9abfd8387ec52618db4153155a8545ba9bf22594256d079a31668e62c493eceefd911b1944

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
0756ad2f50fe5b61a08c2c50e37f60a7

SHA1
bcf54612eeb60edf35fa9ce41ca93ad2eeada943

SHA256
67f7a8401ba3d199fc79c3f8ab89bc69f649c63be0cd01a626f7c08cf7745dc4

SHA512
afc507350614a2f88575a226e8eaadcbb3f3569f6ebba8b4dc2dd8f74f297a274b4ad4320202940c00871cf7652a1d04ddd921dee0f33ec2227b815736ac6e7e

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

Filesize
392B

MD5
5de14ed9aa91e88bab129e6cbd4b586d

SHA1
4f2631d5c2b986ed5040a3ba82a9a95ea9d3ffdf

SHA256
2dae62791204e69724858c256d2e48d7e27ed5e766b9780a607a26b0463c3ab9

SHA512
66b39e716bdca28e8db1ff8f0343d29ae75bf5dc8ef76b8c2966fa5c91885af1aeff23f05a4befdbf203fcc75729ff1f278ca290d83f0bcf472912b84aa1e4b8

Download Submit
C:\Users\Admin\AppData\Local\61cee82b-c4a1-4ff0-bb12-2843a6d148f9\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe

Filesize
743KB

MD5
ab7f5c6b0c187e475ea5ae7e42de2d3c

SHA1
7b4c3f5e22bfab8cdb856f90496fb70554ae0cfe

SHA256
6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347

SHA512
20f7818183b53f7f339bef38bfe0c94794c087d9f0750ae558c09c11c5527272de67a95f3e548ed819045852b0403932ff36d9f8ec0cc881faa31ad45345cbc6

Download Submit
memory/712-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/712-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/712-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/712-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/712-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2132-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4440-2-0x0000000004430000-0x000000000454B000-memory.dmp

Filesize
1.1MB

Download
memory/4440-1-0x0000000004390000-0x0000000004423000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads