djvu | 76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6

General

Target

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
Size

774KB
MD5

6c79509cb1dc8f982b6b8f7deed98a00
SHA1

7d9037f74c750296ef00320cf86018759aa9a7ce
SHA256

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6
SHA512

7994281fd7a745fa5f96d5e2dab9021daf4bb29555b97004fd05e6cd82c461936326430fc3683ee86151177d1940fe20adab1d76226654fa465afd3e1307e3a9
SSDEEP

12288:32/iDq9TcMt+4irSm1zoP+uKLiTkxQODS9S9orhM+H6ZCcAz:32/2Ic14szmKLiTUQ8SIoLgC3

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2428-2-0x0000000002650000-0x000000000276B000-memory.dmp	family_djvu
behavioral1/memory/2996-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2996-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2996-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2996-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2996-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4408-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4408-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4408-23-0x0000000000400000-0x0000000000537000-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

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2656 icacls.exe

pid	process
2656	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\98421c09-2a85-4028-afc8-d3a05b4f6cd0\\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe\" --AutoStart"	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.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.

Processes:

flow ioc

17 api.2ip.ua
18 api.2ip.ua

flow	ioc
17	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

description	pid	process	target process
PID 2428 set thread context of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 set thread context of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3660 4408 WerFault.exe 76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

pid	pid_target	process	target process
3660	4408	WerFault.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

pid	process
2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
"C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
  "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\98421c09-2a85-4028-afc8-d3a05b4f6cd0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2656
- - C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
    "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4580
  - - C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
      "C:\Users\Admin\AppData\Local\Temp\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4408
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4408 -s 568
        5⤵
        Program crash
        
        PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4408 -ip 4408
1⤵
PID:2512

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\98421c09-2a85-4028-afc8-d3a05b4f6cd0\76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Filesize
774KB

MD5
6c79509cb1dc8f982b6b8f7deed98a00

SHA1
7d9037f74c750296ef00320cf86018759aa9a7ce

SHA256
76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6

SHA512
7994281fd7a745fa5f96d5e2dab9021daf4bb29555b97004fd05e6cd82c461936326430fc3683ee86151177d1940fe20adab1d76226654fa465afd3e1307e3a9

Download Submit
memory/2428-1-0x0000000002560000-0x00000000025F6000-memory.dmp

Filesize
600KB

Download
memory/2428-2-0x0000000002650000-0x000000000276B000-memory.dmp

Filesize
1.1MB

Download
memory/2996-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2996-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2996-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2996-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2996-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4408-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4408-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4408-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4580-18-0x00000000025C0000-0x000000000265E000-memory.dmp

Filesize
632KB

Download

description	pid	process	target process
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2428 wrote to memory of 2996	2428	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2996 wrote to memory of 2656	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 2996 wrote to memory of 2656	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 2996 wrote to memory of 2656	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	icacls.exe
PID 2996 wrote to memory of 4580	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2996 wrote to memory of 4580	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 2996 wrote to memory of 4580	2996	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe
PID 4580 wrote to memory of 4408	4580	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe	76ece639e9534dda8bb427cdd008101add745469d70c9b283110782d9671f5d6.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads