djvu | 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

General

Target

519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
Size

711KB
MD5

07116bba4c9f651cf2c4327698483aa0
SHA1

02a9fc8459c6ad451ba571146d5211664b4276d3
SHA256

519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d
SHA512

d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2
SSDEEP

12288:o4Amb9t3hc0lMxKvp30GfaOztaHNdvPRROnLTfp1WPhbFXMNZMCHcBiFBcDW7X:o49bLLgQ50GfaOzCnvPRWLV8PRFXMPHj

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 16 IoCs

resource	yara_rule
behavioral2/memory/2316-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/2336-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2336-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2336-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1548-37-0x0000000000400000-0x0000000000537000-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
3764	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-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe\" --AutoStart"	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 4272 set thread context of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84

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
2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
1548	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
1548	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2316 wrote to memory of 2336	2316	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	79
PID 2336 wrote to memory of 3764	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	80
PID 2336 wrote to memory of 3764	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	80
PID 2336 wrote to memory of 3764	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	80
PID 2336 wrote to memory of 4272	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	81
PID 2336 wrote to memory of 4272	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	81
PID 2336 wrote to memory of 4272	2336	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	81
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84
PID 4272 wrote to memory of 1548	4272	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	84

C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
  "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3764
- - C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
    "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4272
  - - C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
      "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1548

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

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Downloads

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

Filesize
1KB

MD5
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
d61710168ddd3aeac4ccb81d7fdac11f

SHA1
007ade683162f8313ea23e5cd43acb4e5afeb81d

SHA256
606c25ba7e67e29251b24345c7fc31d5f4a6a9933e7a8f851ae2545866adb68c

SHA512
7ea015bb5106115217684488bf141fb572614a1af01917f61bdb858a091ff6b1596d186540f470b806cec68fa1f040378e2a17695a331faf4d0225efe1bc6b61

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

Filesize
392B

MD5
4671e9cc8e3d2a03236857ce07168852

SHA1
92b36638188fe2ef5bfdfefed98957f62c4ac5fa

SHA256
84bd46ee716c91b7de8a428051621f8911e7c2fdbf2820dc0bbf3edea222ddbb

SHA512
fb7c40c37f5995fbd178d4ec51719173775c666de3a1f96da9ce21fc5d8b84810fa2b4b96a0193165bb9734318627864e600f91ccea13be6fb07914a21ca6b02

Download Submit
C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

Filesize
711KB

MD5
07116bba4c9f651cf2c4327698483aa0

SHA1
02a9fc8459c6ad451ba571146d5211664b4276d3

SHA256
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

SHA512
d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2

Download Submit
memory/1548-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1548-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2316-1-0x0000000004A10000-0x0000000004AAE000-memory.dmp

Filesize
632KB

Download
memory/2316-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

Filesize
1.1MB

Download
memory/2336-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads