djvu | c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17

General

Target

c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
Size

809KB
MD5

ba174a7c712cf99394b6b0f5ce052bfc
SHA1

ba4bc1d1efa3249ebe74f81b41bb3eaa5022bc7f
SHA256

c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17
SHA512

77e9b7709b13d55016a22d110ad020ccf742f4d54deee7becd5801cf343ef9c0ae1446b8ccc5f9b48bb3526253cdc193a5849357d6cfe934a91691a906acc9bc
SSDEEP

12288:bKi/g4BY7s/SQsVSkMa5bKGNG1KWNSnC1a1VmGihQWcdmKJrMKY2bVi:GmebbaKwSnCEZihxMmYrMKYsV

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4844-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp	family_djvu
behavioral2/memory/4904-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4904-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4904-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4904-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4904-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4032-43-0x0000000000400000-0x0000000000537000-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
3360	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-1-5-21-825860316-2493133627-3905166409-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3f78207a-e9cd-4dd9-ba5a-553fb13ba3e1\\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe\" --AutoStart"	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.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
6	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4844 set thread context of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4632 set thread context of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86

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
4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
4032	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
4032	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4844 wrote to memory of 4904	4844	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	80
PID 4904 wrote to memory of 3360	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	82
PID 4904 wrote to memory of 3360	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	82
PID 4904 wrote to memory of 3360	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	82
PID 4904 wrote to memory of 4632	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	83
PID 4904 wrote to memory of 4632	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	83
PID 4904 wrote to memory of 4632	4904	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	83
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86
PID 4632 wrote to memory of 4032	4632	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	86

C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
"C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
  "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\3f78207a-e9cd-4dd9-ba5a-553fb13ba3e1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3360
- - C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
    "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4632
  - - C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
      "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4032

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

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
77ee8e04347054f167cc7ec40d57354d

SHA1
4a446de1091ae5e12e09c63b35e70b0a2b8948ec

SHA256
b1c8a7c134fa736577b3841065a56a56827381b44f95b1664da5a6e7ef6ddb3f

SHA512
905e6f0e8cbb9b04b1c00f1c61a283ef5f01f5afa1cf6b23e94b74f51df641b1e464ed30560a172dfe2d99ba09318b440304f99160f5d328359243266f0a37de

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
77c08d0d5e0c39c0cb8ddd239a43f9cb

SHA1
9196f1467ba3ffb7b22b6c4ef1d18f8714851f12

SHA256
eb5e59457e784c1667643fb88246de04d0137415572541c016cb9723ba1a735d

SHA512
6501844c1740a3dd2922832c66e20b1d7e33ee701aff7e274944d5f3579670d0fa3b1e85ea2c7d1b45dffe0a301b185aeb9325e476ac0906ac08dc5f193d8cf4

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

Filesize
392B

MD5
1fd25c85edbdbfe67bddaad5b8b9aae5

SHA1
405fd24a4ff22c870c5867405080a4d1f5d1d5e6

SHA256
b5b93fc9946dec742453ff68f638367984aed1571a8b26034f72d221256ba6d4

SHA512
01bb7408117da47541d3e6c0b224141cee3d1f66774275bdcab815de3557c18bc5b54b1d6bc4c191b636e29c694f8af38b4d9925396414a13bd008c4d02c7821

Download Submit
C:\Users\Admin\AppData\Local\3f78207a-e9cd-4dd9-ba5a-553fb13ba3e1\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe

Filesize
809KB

MD5
ba174a7c712cf99394b6b0f5ce052bfc

SHA1
ba4bc1d1efa3249ebe74f81b41bb3eaa5022bc7f

SHA256
c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17

SHA512
77e9b7709b13d55016a22d110ad020ccf742f4d54deee7becd5801cf343ef9c0ae1446b8ccc5f9b48bb3526253cdc193a5849357d6cfe934a91691a906acc9bc

Download Submit
memory/4032-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4632-23-0x0000000004B30000-0x0000000004BC6000-memory.dmp

Filesize
600KB

Download
memory/4844-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp

Filesize
1.1MB

Download
memory/4844-1-0x0000000004BF0000-0x0000000004C88000-memory.dmp

Filesize
608KB

Download
memory/4904-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-3-0x0000000000400000-0x0000000000537000-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