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
behavioral1/memory/3216-2-0x00000000042D0000-0x00000000043EB000-memory.dmp	family_djvu
behavioral1/memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/736-35-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1200	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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8864e949-7515-45ca-849a-1215db61f902\\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
17	api.2ip.ua
18	api.2ip.ua
23	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3216 set thread context of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 4712 set thread context of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92

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
4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
736	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
736	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 3216 wrote to memory of 4036	3216	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	88
PID 4036 wrote to memory of 1200	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	89
PID 4036 wrote to memory of 1200	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	89
PID 4036 wrote to memory of 1200	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	89
PID 4036 wrote to memory of 4712	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	90
PID 4036 wrote to memory of 4712	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	90
PID 4036 wrote to memory of 4712	4036	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	90
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92
PID 4712 wrote to memory of 736	4712	6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe	92

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:3216
- C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
  "C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4036
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\8864e949-7515-45ca-849a-1215db61f902" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1200
- - 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:4712
  - - C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe
      "C:\Users\Admin\AppData\Local\Temp\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:736

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

Query Registry

1

T1012

System Information Discovery

2

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
4697551d402c7405a07cfdd22051cf15

SHA1
3c3a8c2b95ea114f6f96ac3a1ec020caa8f7f8f4

SHA256
6d07266b71952ab0a497ddb11b599699bf7ebc2a03bcc4f8f6a15d27686965af

SHA512
9b04c4232d186c8fc2198abd7d08aa53883659b131959b27e5ce1652aa0fa987596944b9bcfb1b58b1f3ede85528dd50e1460a788397c85e690e5735935add64

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

Filesize
392B

MD5
f08c221bfec63f677b4ea9df4ce1ef0b

SHA1
9ef66eaabe602f9f7da1f8c66784683cacbf96aa

SHA256
e00e2cf827847c33111d0b23f11dcc0716fb4e7827e7ae3fd87998167edda981

SHA512
539161f0a13d21918dd710cc14d27a0675cd60dbc510dc20777127d7135c9afd8e4e8166e5a4d2ed179205c9191706f9181f2b619050c908499b67627bdc24b2

Download Submit
C:\Users\Admin\AppData\Local\8864e949-7515-45ca-849a-1215db61f902\6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347.exe

Filesize
743KB

MD5
ab7f5c6b0c187e475ea5ae7e42de2d3c

SHA1
7b4c3f5e22bfab8cdb856f90496fb70554ae0cfe

SHA256
6f4f75bf4b5f1be02e3eef196b29683473fe5f0d3dc48b436e936a6bcaf2a347

SHA512
20f7818183b53f7f339bef38bfe0c94794c087d9f0750ae558c09c11c5527272de67a95f3e548ed819045852b0403932ff36d9f8ec0cc881faa31ad45345cbc6

Download Submit
memory/736-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/736-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-1-0x0000000004230000-0x00000000042C5000-memory.dmp

Filesize
596KB

Download
memory/3216-2-0x00000000042D0000-0x00000000043EB000-memory.dmp

Filesize
1.1MB

Download
memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads