djvu | 459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5

General

Target

459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
Size

771KB
MD5

e61d1f33dad3abed6251bb2e0c27a1cb
SHA1

e800525dbd1f209b206f38264bd6b7ffb6684414
SHA256

459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5
SHA512

d12ea5f1a63569f8da7398494f2cd5a61630f13e6d4aaa04126d15d35057764a4af85037d092ed4f4ca601edbd88fc5a2d2abf9a0740d6a225cbefdb296a3345
SSDEEP

24576:nJKWg+ACDu7VtOlzwc57NOL3VdC4oNl+:n8W1ACDmt0U3VM4o

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ptqw
offline_id
43WPLl8Cnh3dZoiWhf8tP8Q9CrMBVUL2dwHB2Rt1
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-dHFDYXqlkk 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: 0806ASUDr

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4384-2-0x00000000026F0000-0x000000000280B000-memory.dmp	family_djvu
behavioral1/memory/3256-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3256-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3256-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3256-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3256-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2408-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2408-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2408-23-0x0000000000400000-0x0000000000537000-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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4608	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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f6d6203f-a260-446f-a31d-0ead68c5b18f\\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe\" --AutoStart"	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.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
8	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4384 set thread context of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 928 set thread context of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90

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
1188	2408	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 4384 wrote to memory of 3256	4384	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	83
PID 3256 wrote to memory of 4608	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	84
PID 3256 wrote to memory of 4608	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	84
PID 3256 wrote to memory of 4608	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	84
PID 3256 wrote to memory of 928	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	85
PID 3256 wrote to memory of 928	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	85
PID 3256 wrote to memory of 928	3256	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	85
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90
PID 928 wrote to memory of 2408	928	459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe	90

C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
"C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
  "C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f6d6203f-a260-446f-a31d-0ead68c5b18f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4608
- - C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
    "C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:928
  - - C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe
      "C:\Users\Admin\AppData\Local\Temp\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:2408
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 568
        5⤵
        Program crash
        
        PID:1188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2408 -ip 2408
1⤵
PID:1408

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

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Downloads

C:\Users\Admin\AppData\Local\f6d6203f-a260-446f-a31d-0ead68c5b18f\459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5.exe

Filesize
771KB

MD5
e61d1f33dad3abed6251bb2e0c27a1cb

SHA1
e800525dbd1f209b206f38264bd6b7ffb6684414

SHA256
459468f944d162d10d8adf85b97350aef32119f0533e051aff67edd99bfb35b5

SHA512
d12ea5f1a63569f8da7398494f2cd5a61630f13e6d4aaa04126d15d35057764a4af85037d092ed4f4ca601edbd88fc5a2d2abf9a0740d6a225cbefdb296a3345

Download Submit
memory/928-18-0x0000000002450000-0x00000000024E5000-memory.dmp

Filesize
596KB

Download
memory/2408-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3256-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3256-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3256-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3256-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3256-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4384-1-0x00000000025C0000-0x000000000265F000-memory.dmp

Filesize
636KB

Download
memory/4384-2-0x00000000026F0000-0x000000000280B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads