djvu | 4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31

General

Target

4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
Size

752KB
MD5

a3a830eb6c9c589e1d24e987589d347b
SHA1

3abc3bcd5b07783a2ff2e10b285f0e95a071cd09
SHA256

4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31
SHA512

14df4ffc1d75ac90bda3de9c6187032bd7f2337c1464ecd321527a353648425078c3ea3306c40ed0a60c5a5d19b962fb67b3d1d51503ce7ad467b0a835ea7f0e
SSDEEP

12288:koVJend0Whaltjb7txVgnI7uM9znIjKxNi/TaOSD6LYI2TzuPs3jUIM9Fw:koVJS0pZxVmIiM2joUe/6L32fqHw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.nzqw
offline_id
fe7vbai057v1PzegcJrFdG7DjT3mL5gUtMQkLrt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-E4b0Td2MBH Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0769JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4536-2-0x0000000003D60000-0x0000000003E7B000-memory.dmp	family_djvu
behavioral1/memory/3428-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3428-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3428-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3428-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3428-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4480-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4480-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4480-23-0x0000000000400000-0x0000000000537000-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-1-5-21-642304425-1816607141-2958861556-1000\Control Panel\International\Geo\Nation	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4968	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-1-5-21-642304425-1816607141-2958861556-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ccf3b939-d636-4330-b314-f7a66a23285a\\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe\" --AutoStart"	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.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.

flow	ioc
25	api.2ip.ua
26	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4536 set thread context of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 3640 set thread context of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1828	4480	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 4536 wrote to memory of 3428	4536	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	87
PID 3428 wrote to memory of 4968	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	88
PID 3428 wrote to memory of 4968	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	88
PID 3428 wrote to memory of 4968	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	88
PID 3428 wrote to memory of 3640	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	89
PID 3428 wrote to memory of 3640	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	89
PID 3428 wrote to memory of 3640	3428	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	89
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91
PID 3640 wrote to memory of 4480	3640	4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe	91

C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
"C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
  "C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3428
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ccf3b939-d636-4330-b314-f7a66a23285a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4968
- - C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
    "C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3640
  - - C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe
      "C:\Users\Admin\AppData\Local\Temp\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4480
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 568
        5⤵
        Program crash
        
        PID:1828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4480 -ip 4480
1⤵
PID:4836

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\ccf3b939-d636-4330-b314-f7a66a23285a\4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31.exe

Filesize
752KB

MD5
a3a830eb6c9c589e1d24e987589d347b

SHA1
3abc3bcd5b07783a2ff2e10b285f0e95a071cd09

SHA256
4d6c05b6498c3451bc975c26547d84dc7c25c6e4f1f5914a638802167b31fd31

SHA512
14df4ffc1d75ac90bda3de9c6187032bd7f2337c1464ecd321527a353648425078c3ea3306c40ed0a60c5a5d19b962fb67b3d1d51503ce7ad467b0a835ea7f0e

Download Submit
memory/3428-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3428-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3428-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3428-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3428-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3640-18-0x0000000003BE0000-0x0000000003C7E000-memory.dmp

Filesize
632KB

Download
memory/4480-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4480-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4480-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4536-1-0x0000000003BB0000-0x0000000003C49000-memory.dmp

Filesize
612KB

Download
memory/4536-2-0x0000000003D60000-0x0000000003E7B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads