djvu | ef69e77d706439dcbcb7f2d26857e171c9f1c56346a117b54cde2d0b0cd49728

General

Target

4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
Size

685KB
MD5

1fb673645d2101b59debb53ffa81653d
SHA1

d2932942074cdad85a7eb9a9571a22183bf6697b
SHA256

4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404
SHA512

8f8889c68801a8de8f04371112d86348d6d59577effd722c6d193b8f30f7c204e4e79dcf208e7c0d666cdc02407ffa7c9de29f78d0545ec1e52de8908c3d3074
SSDEEP

12288:yqxClOKad7cnfq1GWcb/7o2p1qI52K9+VkiqfouJCw4jiz3:bAOKad7cnUGW2/7o2p1q+Jfonj

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ppvs
offline_id
phJtdHo970vyx7vwlYG00OakDR75RuJz7NXDArt1
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-eyUsqpKbFl 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: 0815JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4140-2-0x00000000026C0000-0x00000000027DB000-memory.dmp	family_djvu
behavioral2/memory/4028-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4028-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4028-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4028-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4028-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-21-0x0000000000400000-0x0000000000537000-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-1-5-21-1873812795-1433807462-1429862679-1000\Control Panel\International\Geo\Nation	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2564	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-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bb074c0d-5f18-4091-a146-7258dc9536bb\\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe\" --AutoStart"	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.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
39	api.2ip.ua
40	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4140 set thread context of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 2960 set thread context of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102

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
3952	4280	WerFault.exe	102

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4140 wrote to memory of 4028	4140	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	93
PID 4028 wrote to memory of 2564	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	96
PID 4028 wrote to memory of 2564	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	96
PID 4028 wrote to memory of 2564	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	96
PID 4028 wrote to memory of 2960	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	98
PID 4028 wrote to memory of 2960	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	98
PID 4028 wrote to memory of 2960	4028	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	98
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102
PID 2960 wrote to memory of 4280	2960	4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe	102

C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
"C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4140
- C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
  "C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4028
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\bb074c0d-5f18-4091-a146-7258dc9536bb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2564
- - C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
    "C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2960
  - - C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe
      "C:\Users\Admin\AppData\Local\Temp\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4280
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4280 -s 568
        5⤵
        Program crash
        
        PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4280 -ip 4280
1⤵
PID:4544

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\bb074c0d-5f18-4091-a146-7258dc9536bb\4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404.exe

Filesize
685KB

MD5
1fb673645d2101b59debb53ffa81653d

SHA1
d2932942074cdad85a7eb9a9571a22183bf6697b

SHA256
4754179f8d7da64352226d77af9d1bdf434b572a2a773f16d96d664cc7d2b404

SHA512
8f8889c68801a8de8f04371112d86348d6d59577effd722c6d193b8f30f7c204e4e79dcf208e7c0d666cdc02407ffa7c9de29f78d0545ec1e52de8908c3d3074

Download Submit
memory/2960-18-0x0000000002410000-0x00000000024A5000-memory.dmp

Filesize
596KB

Download
memory/4028-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4140-1-0x0000000002600000-0x0000000002699000-memory.dmp

Filesize
612KB

Download
memory/4140-2-0x00000000026C0000-0x00000000027DB000-memory.dmp

Filesize
1.1MB

Download
memory/4280-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-21-0x0000000000400000-0x0000000000537000-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