djvu | 376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583

General

Target

376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
Size

762KB
MD5

cf014ab0a3e616d4191e3e3cc58dd447
SHA1

59ec38834c2315d92749a64c07339ae9db7c6827
SHA256

376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583
SHA512

53974f0cdff6f74ead8e5b485cd8786a7b4c1c296a532cf6e965da61d52d35e17ffbceada0c7a040aeb65476c475a9fa5d241b34ca264f2ef9d8a717a6f87b9c
SSDEEP

12288:1mjc3u2YSCmZZWtG7lNGqiTYK9YlYyBfRq6+eemjxKQq8zTylP+2o:1AU3ZRtiS9H7fdlpfy+2

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.wwza
offline_id
LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
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-xoUXGr6cqT 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: 0789JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral2/memory/5052-2-0x00000000025D0000-0x00000000026EB000-memory.dmp	family_djvu
behavioral2/memory/548-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/548-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/548-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/548-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/548-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/548-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4104-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4104-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4104-27-0x0000000000400000-0x0000000000537000-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-1-5-21-1045988481-1457812719-2617974652-1000\Control Panel\International\Geo\Nation	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
816	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-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\40a5f9e3-2d80-4bc5-9564-103c932d354b\\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe\" --AutoStart"	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.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
18	api.2ip.ua
19	api.2ip.ua
24	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5052 set thread context of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 444 set thread context of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.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
4916	4104	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 5052 wrote to memory of 548	5052	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	83
PID 548 wrote to memory of 816	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	84
PID 548 wrote to memory of 816	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	84
PID 548 wrote to memory of 816	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	84
PID 548 wrote to memory of 444	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	86
PID 548 wrote to memory of 444	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	86
PID 548 wrote to memory of 444	548	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	86
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88
PID 444 wrote to memory of 4104	444	376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe	88

C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
"C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
  "C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:548
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\40a5f9e3-2d80-4bc5-9564-103c932d354b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:816
- - C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
    "C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:444
  - - C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe
      "C:\Users\Admin\AppData\Local\Temp\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4104
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 568
        5⤵
        Program crash
        
        PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4104 -ip 4104
1⤵
PID:3016

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\40a5f9e3-2d80-4bc5-9564-103c932d354b\376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583.exe

Filesize
762KB

MD5
cf014ab0a3e616d4191e3e3cc58dd447

SHA1
59ec38834c2315d92749a64c07339ae9db7c6827

SHA256
376f9f885873267e22ae8f7fcc98fc359d8383e34e869fd2ccea68ac32486583

SHA512
53974f0cdff6f74ead8e5b485cd8786a7b4c1c296a532cf6e965da61d52d35e17ffbceada0c7a040aeb65476c475a9fa5d241b34ca264f2ef9d8a717a6f87b9c

Download Submit
memory/444-22-0x0000000000A00000-0x0000000000A9E000-memory.dmp

Filesize
632KB

Download
memory/548-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/548-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/548-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/548-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/548-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/548-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4104-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4104-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4104-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5052-2-0x00000000025D0000-0x00000000026EB000-memory.dmp

Filesize
1.1MB

Download
memory/5052-1-0x0000000002530000-0x00000000025C3000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads