djvu | 37a6006013b8ae6b136b4dbb44ba232de94e1bed2197a7243e9143cd3a18fffb

General

Target

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
Size

837KB
MD5

b3757b09ed2150ce857f446c0c61363c
SHA1

04536100a4a8fc27dde91e006f4e2ea6b398b65e
SHA256

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981
SHA512

c7fb0efb95a96177bcbc50a60f2d900f4f7328a0a98a64ead6fc6e00f52502c904815e1e0a8b309a764c77db1fa65a8e5da5104593e0d987fb6bf3f794a82119
SSDEEP

24576:c3eL/rX2Ev8KDHwSPxDwauHfz/eicEeb+8TYLL:NLz7x7PP+H7e0YfT4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
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. 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/abe121434ad837dd5bdd03878a14485820240531135509/34284d 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: 0874PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1540-2-0x0000000003FA0000-0x00000000040BB000-memory.dmp	family_djvu
behavioral2/memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1936-36-0x0000000000400000-0x000000000211B000-memory.dmp	family_djvu
behavioral2/memory/3088-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3088-46-0x0000000000400000-0x0000000000537000-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:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
2448	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d74fb27e-8a95-464d-8761-c818cd89b6e0\\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe\" --AutoStart"	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.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.

Processes:

flow	ioc
13	api.2ip.ua
21	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

description	pid	Process	procid_target
PID 1540 set thread context of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1936 set thread context of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92

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

Processes:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exeicacls.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

pid	Process
4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
3088	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
3088	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

description	pid	Process	procid_target
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 1540 wrote to memory of 4880	1540	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	86
PID 4880 wrote to memory of 2448	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	87
PID 4880 wrote to memory of 2448	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	87
PID 4880 wrote to memory of 2448	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	87
PID 4880 wrote to memory of 1936	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	88
PID 4880 wrote to memory of 1936	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	88
PID 4880 wrote to memory of 1936	4880	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	88
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92
PID 1936 wrote to memory of 3088	1936	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	92

C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
"C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
  "C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.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:4880
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d74fb27e-8a95-464d-8761-c818cd89b6e0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2448
- - C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
    "C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1936
  - - C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
      "C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3088

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
e92fd9e62414a8c4e08dc7d703520f6d

SHA1
13e55d587f5fc01bfb65bc3d2da26f135777c552

SHA256
429343b860bcb1d4837802f3a05294d5a7951e14432918461ede2dce812c897c

SHA512
a6773e5f6fb526c98cb1b91ddab38b3de72bc10b2e1c538d0360f5248ce2325847a4d463b8378f045f293d3a1516fee50c80f01f61a19c2dc32978c3b6bcb378

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

Filesize
170B

MD5
c0f0e4e75d547b77b291109e83757ffc

SHA1
0a725aac28b78459a924f4ca1d73514d18d9ff6c

SHA256
a98b89635cb736936bcac15797a414ded5d4cd4fdfcdcbe82d87354a90c9db2f

SHA512
60713e6f2cdff2c721c760a0460b2812648e143ebdae5b0f568370d0a70aa093bf333a7b1072cdaa22b458969c74e26426d941f3b0f8cfe360689409155cb48d

Download Submit
C:\Users\Admin\AppData\Local\d74fb27e-8a95-464d-8761-c818cd89b6e0\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

Filesize
837KB

MD5
b3757b09ed2150ce857f446c0c61363c

SHA1
04536100a4a8fc27dde91e006f4e2ea6b398b65e

SHA256
4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981

SHA512
c7fb0efb95a96177bcbc50a60f2d900f4f7328a0a98a64ead6fc6e00f52502c904815e1e0a8b309a764c77db1fa65a8e5da5104593e0d987fb6bf3f794a82119

Download Submit
memory/1540-1-0x0000000003EF0000-0x0000000003F92000-memory.dmp

Filesize
648KB

Download
memory/1540-2-0x0000000003FA0000-0x00000000040BB000-memory.dmp

Filesize
1.1MB

Download
memory/1936-25-0x0000000000400000-0x000000000211B000-memory.dmp

Filesize
29.1MB

Download
memory/1936-36-0x0000000000400000-0x000000000211B000-memory.dmp

Filesize
29.1MB

Download
memory/3088-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads