djvu | 672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7

General

Target
672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Size 781KB
Sample260809-s2em7atvft
SHA256 672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7
MD5 0333f0129897bffa8baa70d30eefadfd
SHA1 a99d6b1274f740b58158df0fbc71852503622ac0
SHA512 06fd7b024c04c42d93c70e44ac39018115f90373eae5d9a8cccdf526034f2f3e57d0b22a3c6e0c617d737e03f9daab9c10cea8e40eb3c69eaeabdb2022e60d77
SSDEEP 12288:T6ESEvOgZx/Nd0wNCo7xztsyh98Q20DuV8gYjvozZfLiI:2EhvOgXw0lay20DuV8gAULiI
TLSH
T15505D04382E13D54E5268B729F2FE6EC770EF6918E0DBB7921189E1F04B01B2E263755
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery djvu persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes

extension
.jawr
offline_id
UlJXrkKDIkENh0vb5W9For2Yyh6riGytjO5p2St1
payload_url
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-iu965qqEb1 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: 0831Usdk

rsa_pubkey.plain

Signatures

Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Detected Djvu ransomware 6 IoCs

resource	yara_rule
behavioral1/memory/1872-2-0x0000000004850000-0x000000000496B000-memory.dmp	family_djvu
behavioral1/memory/3096-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3096-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3096-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3096-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3096-22-0x0000000000400000-0x0000000000537000-memory.dmp	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-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2776	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-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\95dfc03f-54a2-42cd-9c39-8638748d911b\\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe\" --AutoStart"	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Looks up external IP address via web service 1 TTPs 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
72	api.2ip.ua
80	api.2ip.ua

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104

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

System Information Discovery
T1082

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	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3096	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
3096	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 1872 wrote to memory of 3096	1872	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	104
PID 3096 wrote to memory of 2776	3096	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	106
PID 3096 wrote to memory of 788	3096	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	107

C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
"C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
  "C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.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:3096
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\95dfc03f-54a2-42cd-9c39-8638748d911b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2776
- - C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
    "C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - System Location Discovery: System Language Discovery
    PID:788

C:\Users\Admin\AppData\Local\95dfc03f-54a2-42cd-9c39-8638748d911b\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
C:\Users\Admin\AppData\Local\95dfc03f-54a2-42cd-9c39-8638748d911b\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2752

Network

MITRE ATT&CK Enterprise v16

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Path C:\Users\Admin\AppData\Local\95dfc03f-54a2-42cd-9c39-8638748d911b\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Size 781KB
SHA256 672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7
MD5 0333f0129897bffa8baa70d30eefadfd
SHA1 a99d6b1274f740b58158df0fbc71852503622ac0
SHA512 06fd7b024c04c42d93c70e44ac39018115f90373eae5d9a8cccdf526034f2f3e57d0b22a3c6e0c617d737e03f9daab9c10cea8e40eb3c69eaeabdb2022e60d77
SSDEEP 12288:T6ESEvOgZx/Nd0wNCo7xztsyh98Q20DuV8gYjvozZfLiI:2EhvOgXw0lay20DuV8gAULiI
TLSH
T15505D04382E13D54E5268B729F2FE6EC770EF6918E0DBB7921189E1F04B01B2E263755
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1872-1-0x0000000002EB0000-0x0000000002F4F000-memory.dmp

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memory/1872-2-0x0000000004850000-0x000000000496B000-memory.dmp

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memory/3096-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3096-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3096-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3096-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3096-22-0x0000000000400000-0x0000000000537000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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