djvu | 68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
27/05/2024, 06:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
Size 771KB
Sample240527-hmk7babe6w
SHA256 68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0
MD5 ac4d987db3891d67cf7797e60a9cbd5c
SHA1 a499f5f67832094faa8b79ab1d53bb50049a106b
SHA512 bb61645430ce249d3203a63d479c84d065ef1c6c8e11345b5b865feafeb3977d64e9656f0bc35f6a5a4769c7143604fdec9ebf31b780e5d2a0685150e7a41fcc
SSDEEP 12288:rFsjxJqqUvBuaAemxcgd1qVaEdMlq2u8ImxXAgRerM0IceWZ:rF2/oBukmxfEVqmlmxxeY0IgZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vehu
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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/1912-2-0x0000000003DC0000-0x0000000003EDB000-memory.dmp	family_djvu
behavioral2/memory/2440-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-37-0x0000000000400000-0x0000000000537000-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
5016	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-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\00982234-3b13-4e54-84a6-9a3565930e1f\\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe\" --AutoStart"	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.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
2	api.2ip.ua
6	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1912 set thread context of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 4940 set thread context of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85

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
2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
4564	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
4564	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 1912 wrote to memory of 2440	1912	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	79
PID 2440 wrote to memory of 5016	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	81
PID 2440 wrote to memory of 5016	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	81
PID 2440 wrote to memory of 5016	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	81
PID 2440 wrote to memory of 4940	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	82
PID 2440 wrote to memory of 4940	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	82
PID 2440 wrote to memory of 4940	2440	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	82
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85
PID 4940 wrote to memory of 4564	4940	68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe	85

C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
"C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
  "C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\00982234-3b13-4e54-84a6-9a3565930e1f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:5016
- - C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
    "C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
      "C:\Users\Admin\AppData\Local\Temp\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4564

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 990697f2eed9d44971a4eaeec7c0ddd2822c683683bec33dff51ac1fcc07b059
MD5 2b79576931f7278028f9fcc700d932d2
SHA1 84f199382ad7efa564324e559dd9d0586d518fd7
SHA512 1aaef7b8a3e8e5e9dbcca8daadef4951b1467d76c4a3cfb39328c5dc21431bf68bfb1660ba403a755504e2611f864a27847a08a5d3dd6b63c7489d230f99ec24
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 e590d5bebd6e29f3a4f5a73747b5b05f6ce64e0dce2dc27078d530143d5d6e44
MD5 a332a07b13e5d1b69c3493ff9d25e650
SHA1 1ae28ce6014d7fb3630db6271bea7cbff052a91e
SHA512 db327622acb4811fd91f1e9b7fd6d374de517c41a58fd041b7a8aac83524affa61b951bc44da0449cc82b1a1904f1abf7df8e7f2fa8a9077257ee6f2a4e19f7c
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 51d8a544023eef55e3ce43f294023ff85f5b4e1fa72e032f39e85d0fa0f9ad40
MD5 e3f0259723f235907cf05fb89435886f
SHA1 94cbf76a8342439cc20829d0e69f4d52127c6764
SHA512 14703efffc7982e1ccb165dc65d9a6d5b46316a5692b682bd8bf19a32547935668870bf1e2888f367b5ceb22329d4d41f9e30fbf5b9adf5bb2d98d44da29b696
MD5 SHA1 SHA512

Submit Download

68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe

Path C:\Users\Admin\AppData\Local\00982234-3b13-4e54-84a6-9a3565930e1f\68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0.exe
Size 771KB
SHA256 68af6ed93c6e74b0096a3811aaacb4ea0ab2ebc03d9c66099ff1421adb8faaa0
MD5 ac4d987db3891d67cf7797e60a9cbd5c
SHA1 a499f5f67832094faa8b79ab1d53bb50049a106b
SHA512 bb61645430ce249d3203a63d479c84d065ef1c6c8e11345b5b865feafeb3977d64e9656f0bc35f6a5a4769c7143604fdec9ebf31b780e5d2a0685150e7a41fcc
SSDEEP 12288:rFsjxJqqUvBuaAemxcgd1qVaEdMlq2u8ImxXAgRerM0IceWZ:rF2/oBukmxfEVqmlmxxeY0IgZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1912-1-0x00000000022F0000-0x000000000238D000-memory.dmp

Download

memory/1912-2-0x0000000003DC0000-0x0000000003EDB000-memory.dmp

Download

memory/2440-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2440-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2440-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2440-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2440-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4564-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download