djvu | 6450c7904185c1ca0cbab2b68e01480a88d66f12932dfec1cd38f78732c84b94

General

Target

40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Size

814KB
MD5

ec49d0d6584ba79f72dbffdad790070c
SHA1

d8d381cd759aa1cf97a4c7c04d2a21896c8d9a98
SHA256

40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8
SHA512

091f8989be60fe709f44316c22a5407da953a86c0baa2d34249fa137bc2d9eb1907b7ec5278d76ee79c4581344a6c74842c8b8363bf81161f0a60d3d26d22dd5
SSDEEP

12288:Dbxu/HPMXlGrLpNfrRfmYugJomnyqNiv+4kNuJktHlELWVUYEvUw4tVcp4b:gHok911mYTo9+VvVlP1vtVP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/fhsgtsspen6/get.php

Attributes

extension
.vveo
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.org/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-QsoSRIeAK6 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: 0533Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/1320-2-0x0000000002410000-0x000000000252B000-memory.dmp	family_djvu
behavioral2/memory/4852-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1780	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\035ec65e-168d-434f-bf02-e8f978290107\\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe\" --AutoStart"	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.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
11	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1320 set thread context of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 3340 set thread context of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88

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
1520	4684	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 1320 wrote to memory of 4852	1320	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	83
PID 4852 wrote to memory of 1780	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	84
PID 4852 wrote to memory of 1780	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	84
PID 4852 wrote to memory of 1780	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	84
PID 4852 wrote to memory of 3340	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	85
PID 4852 wrote to memory of 3340	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	85
PID 4852 wrote to memory of 3340	4852	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	85
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88
PID 3340 wrote to memory of 4684	3340	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	88

C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
"C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
  "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4852
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\035ec65e-168d-434f-bf02-e8f978290107" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1780
- - C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
    "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3340
  - - C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
      "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4684
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4684 -s 572
        5⤵
        Program crash
        
        PID:1520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4684 -ip 4684
1⤵
PID:2572

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\035ec65e-168d-434f-bf02-e8f978290107\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Filesize
814KB

MD5
ec49d0d6584ba79f72dbffdad790070c

SHA1
d8d381cd759aa1cf97a4c7c04d2a21896c8d9a98

SHA256
40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8

SHA512
091f8989be60fe709f44316c22a5407da953a86c0baa2d34249fa137bc2d9eb1907b7ec5278d76ee79c4581344a6c74842c8b8363bf81161f0a60d3d26d22dd5

Download Submit
memory/1320-2-0x0000000002410000-0x000000000252B000-memory.dmp

Filesize
1.1MB

Download
memory/1320-1-0x0000000002230000-0x00000000022C4000-memory.dmp

Filesize
592KB

Download
memory/3340-27-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/3340-21-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/4684-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-3-0x0000000000400000-0x0000000000537000-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