djvu | 9608129701213f7565040f385e8c263d0daaa01ce31dcc7f95a7584c7bf4ad44

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2024 10:53

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General

Target

c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
Size

818KB
MD5

ae9a4663030ecd41b764cc839cb1e67f
SHA1

370d203085ef0465a81bfb4c82d4019beecefb13
SHA256

c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103
SHA512

488f9e5146a12768b1b0f3297b5f8b7487d1f1aef2ba6fd9427ba873c7ab39e2ea34495b09bb458d7d395ccdc38d7cb9163740730026d82c7c52290e5007938a
SSDEEP

12288:fl2fjVNefHfMxT3J6uUA0HdQrXZo3zJA0adehtX24kJwdoXhHNswzAHnFw7w/QnO:Yb8/fJAKkX6jJFa8tXTkJbSrFbEiR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://jfes.top/nddddhsspen6/get.php

Attributes

extension
.wrui
offline_id
ffMYeEIl8VXTNtDFDB8XTask2PZgkOrOTmhHKet1
payload_url
http://jfes.top/files/penelop/updatewin1.exe

http://jfes.top/files/penelop/updatewin2.exe

http://jfes.top/files/penelop/updatewin.exe

http://jfes.top/files/penelop/3.exe

http://jfes.top/files/penelop/4.exe

http://jfes.top/files/penelop/5.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-EHkOffnYLI 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: 0294Iekdfg

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral8/memory/4588-2-0x0000000002720000-0x000000000283A000-memory.dmp	family_djvu
behavioral8/memory/4588-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral8/memory/4588-14-0x0000000000400000-0x00000000008C5000-memory.dmp	family_djvu
behavioral8/memory/4588-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral8/memory/4588-15-0x0000000002720000-0x000000000283A000-memory.dmp	family_djvu
behavioral8/memory/3336-19-0x0000000000400000-0x00000000008C5000-memory.dmp	family_djvu
behavioral8/memory/3336-26-0x0000000000400000-0x00000000008C5000-memory.dmp	family_djvu
behavioral8/memory/3336-29-0x0000000000400000-0x00000000008C5000-memory.dmp	family_djvu
behavioral8/memory/3336-30-0x0000000000400000-0x00000000008C5000-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-1-5-21-2927035347-1736702767-189270196-1000\Control Panel\International\Geo\Nation	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4976	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-1-5-21-2927035347-1736702767-189270196-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\216bb046-ecf6-485b-a9de-0fe30365b45e\\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe\" --AutoStart"	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.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
7	api.2ip.ua
8	api.2ip.ua
13	api.2ip.ua

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
2520	4588	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 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	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
3336	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
3336	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 4976	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	85
PID 4588 wrote to memory of 4976	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	85
PID 4588 wrote to memory of 4976	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	85
PID 4588 wrote to memory of 3336	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	86
PID 4588 wrote to memory of 3336	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	86
PID 4588 wrote to memory of 3336	4588	c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe	86

C:\Users\Admin\AppData\Local\Temp\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
"C:\Users\Admin\AppData\Local\Temp\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\216bb046-ecf6-485b-a9de-0fe30365b45e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Users\Admin\AppData\Local\Temp\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe
  "C:\Users\Admin\AppData\Local\Temp\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 2092
  2⤵
  - Program crash
  PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4588 -ip 4588
1⤵
PID:1768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
3bf40d9baf0372fc4d000a9582c859e8

SHA1
ba9eed84017aa8d8a3e38295914fdfd1405108d5

SHA256
ffb77edcfcc40451d5fb68759383041589eecdec2b36f3644aa3f3957cc76930

SHA512
890c3d97005f8c9fd12d2a2564aae08cb03b51835ea6017b7c31195bacad83562c95906cf629331be565048be8298df2b1d925a2849a0aa960e1d6e9a34d0b3c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
480bb70dc5a200365eb5f3f756454595

SHA1
b2e3b04d9265939a712fd1b5d98eb078e3742412

SHA256
24b6b543766848de152d72065909cf97ca0872447ea57ad2e704974e210a25c6

SHA512
2caa38918d8365533eff614adca3268f2682f0fd0e4af34683f26808558af555fd4b8454e22b79d689cf2755b41095646c71f3d7be410c8785cbd7a0721fb6f1

Download Submit
C:\Users\Admin\AppData\Local\216bb046-ecf6-485b-a9de-0fe30365b45e\c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103.exe

Filesize
818KB

MD5
ae9a4663030ecd41b764cc839cb1e67f

SHA1
370d203085ef0465a81bfb4c82d4019beecefb13

SHA256
c14987c4c6fc2de2cac43355964465d7611652e29f699d64fa292399f526c103

SHA512
488f9e5146a12768b1b0f3297b5f8b7487d1f1aef2ba6fd9427ba873c7ab39e2ea34495b09bb458d7d395ccdc38d7cb9163740730026d82c7c52290e5007938a

Download Submit
memory/3336-19-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/3336-18-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/3336-26-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/3336-29-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/3336-30-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/4588-15-0x0000000002720000-0x000000000283A000-memory.dmp

Filesize
1.1MB

Download
memory/4588-1-0x0000000002610000-0x00000000026A3000-memory.dmp

Filesize
588KB

Download
memory/4588-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4588-14-0x0000000000400000-0x00000000008C5000-memory.dmp

Filesize
4.8MB

Download
memory/4588-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4588-2-0x0000000002720000-0x000000000283A000-memory.dmp

Filesize
1.1MB

Download