djvu | 7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea

General

Target

7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
Size

771KB
MD5

2063058e09411fedc3562091b21b367c
SHA1

2eeab35325fc3b764cbb50e6a6c646115fb25232
SHA256

7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea
SHA512

0da8353fbbf48300dce232aad42bdea01fc4bd7c1275f0c2c04a2ce47d1b2a19d08594c2142ba818c975af2a068d13c625b297fce48336d411390bf26d7c87ad
SSDEEP

12288:8d9HVDF7Rm62krtgIYhxuGRgG8kdyJIPOOnpxLPhVQ3o9w7WHoV:8dHDrmfgiIYhxuGbfdyJIHHw3R

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/4132-2-0x0000000003E00000-0x0000000003F1B000-memory.dmp	family_djvu
behavioral2/memory/3460-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3460-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3460-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3460-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3460-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2296	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-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6f186608-01fe-4324-ae3d-af8441d79d32\\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe\" --AutoStart"	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.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
1	api.2ip.ua
2	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4132 set thread context of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 3100 set thread context of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
1972	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
1972	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 4132 wrote to memory of 3460	4132	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	80
PID 3460 wrote to memory of 2296	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	82
PID 3460 wrote to memory of 2296	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	82
PID 3460 wrote to memory of 2296	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	82
PID 3460 wrote to memory of 3100	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	83
PID 3460 wrote to memory of 3100	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	83
PID 3460 wrote to memory of 3100	3460	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	83
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87
PID 3100 wrote to memory of 1972	3100	7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe	87

C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
"C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
  "C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3460
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6f186608-01fe-4324-ae3d-af8441d79d32" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2296
- - C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
    "C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3100
  - - C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe
      "C:\Users\Admin\AppData\Local\Temp\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1972

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
6e66bd2d283b36991f7460262e5ff4ae

SHA1
eb6906c6d9350ef0b8ff2edd81c3e51649b4a916

SHA256
564b4fa6970bf22294bceca2fb8f53087f3f5dec9565872d731cedd80aa9e7c3

SHA512
974fef50144e97b5bbae326f07ec863082693396e85dd42a0f85c86b6a3d0928b2da485cb7b3e541942d3c9bf49ce2f8063acf0ced79d6ed755928fdba453727

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
31f73bbd7aea0b33f504c70070dbfd40

SHA1
79a5811877afc2cc10bdbe2fb15b4901840e507f

SHA256
6677b6f2aa8cc58d1ed82e123501a1975949af7a9fd08cccd475661db21683d1

SHA512
2592dd59c3f38e3e4c204b20d53e8e0b7ed4b724c6bbffe800a22debbabbfbb98a9b88a3297d7a6b5e7e6f77ee0a305a529024691eed18e38e228bcc103b6dfa

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
713e9e0ffdcdf9b06f591e83dd4fb809

SHA1
6d398d17e1fe56fa2df1fad9518d445481d7daa8

SHA256
b8516922511d7695f9da9e276cf7d7f70d69362dc0869f232bff8d264709414b

SHA512
25113e2977bdc9589b3ccf5e8b5e083e6997e60fc508dd60720c748a450e23a72e6ab9f96e373c9aa16bdb502b6e3f14bfe5d3e12e394ca10478cff5f421ba83

Download Submit
C:\Users\Admin\AppData\Local\6f186608-01fe-4324-ae3d-af8441d79d32\7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea.exe

Filesize
771KB

MD5
2063058e09411fedc3562091b21b367c

SHA1
2eeab35325fc3b764cbb50e6a6c646115fb25232

SHA256
7b1b59e77ac6626c982718da9f481c9f4c04adf4fed0aa5b551abb84b2f08dea

SHA512
0da8353fbbf48300dce232aad42bdea01fc4bd7c1275f0c2c04a2ce47d1b2a19d08594c2142ba818c975af2a068d13c625b297fce48336d411390bf26d7c87ad

Download Submit
memory/1972-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1972-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3460-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3460-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3460-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3460-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3460-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4132-1-0x0000000002340000-0x00000000023D4000-memory.dmp

Filesize
592KB

Download
memory/4132-2-0x0000000003E00000-0x0000000003F1B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads