djvu | 4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384

General

Target

4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
Size

741KB
MD5

87b130973279b12e8c3314b8d53a282e
SHA1

2b8a1f62785c1c2c2bc2182e223ac6f6b291a63f
SHA256

4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384
SHA512

93172075b0642077bdbf28e38b1c05c9d564e3c44cbbc957e077a412f25fafa8481f2c50b05ba5a7036a82a2e186fbb57aff4a7f96e9db62e1f37f235516ba4c
SSDEEP

12288:xbwjN9PqWHFRipE06Sb2hgZiRfXLvH+o4CTI3XrtqmHs1yr/ZNb8PA:xbwXSyKpp2OCfXL2o4Ck3XhBHs1EO

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qehu
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3540-2-0x0000000004A00000-0x0000000004B1B000-memory.dmp	family_djvu
behavioral2/memory/1524-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1524-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1524-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1524-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1524-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-37-0x0000000000400000-0x0000000000537000-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
1892	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-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9348211f-448e-42aa-9d83-d233ecf6023a\\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe\" --AutoStart"	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.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
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3540 set thread context of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 4436 set thread context of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83

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
1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
4896	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
4896	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 3540 wrote to memory of 1524	3540	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	78
PID 1524 wrote to memory of 1892	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	79
PID 1524 wrote to memory of 1892	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	79
PID 1524 wrote to memory of 1892	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	79
PID 1524 wrote to memory of 4436	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	80
PID 1524 wrote to memory of 4436	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	80
PID 1524 wrote to memory of 4436	1524	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	80
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83
PID 4436 wrote to memory of 4896	4436	4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe	83

C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
"C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
  "C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9348211f-448e-42aa-9d83-d233ecf6023a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1892
- - C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
    "C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4436
  - - C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe
      "C:\Users\Admin\AppData\Local\Temp\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4896

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
5857aff0ea0365561d0f06769a04101c

SHA1
0ac570f0ec93618c5849baf94c0a167e4a706a95

SHA256
b50c616b5c29bd9611ed360a238b6b6c421d0fe3b85df331e4951aefab526b2e

SHA512
1863b40407893a4a26beaa7ae4add199676c15b633d59afb4dfd2906328b29497fdddcb0ff01b9ba77ac59c5c55511fa669b0ffd6e02bcfa2d2cc53df62390be

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
dd511a8d2545f419a0e1df01eba20c48

SHA1
24e343ba08776c52b3c8f6e49112cdec67114c00

SHA256
47961d756a383f892dc8eaa514c7d3983c664fae407ebce82032ce8a899e2987

SHA512
1d5b87454cc1c4ca477234820bd9844d120004ac9cbfea3372418d551c6a7971d8b5123ba949ff3940e7271ca5d58c97fcabff8ca6f1c8a14cd767dff2c36814

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

Filesize
392B

MD5
5f776785a0b3b1ac6f8b26c4bdb48b0c

SHA1
abf6940de1e363ead58e91d0b9489fa9b2bab292

SHA256
bf9006eef7356d73e58e61543e4e0de3ba534d4ce50fc1eaa0b7464af954f1c1

SHA512
138727a8d7603f6a468d03ae3356e68651a6a91b44d6d1de8a92d551ea5608fca82ad0a498c6229d93cfe0111f35ff19c2d81e42a38b42e9bc54b0280fcf988f

Download Submit
C:\Users\Admin\AppData\Local\9348211f-448e-42aa-9d83-d233ecf6023a\4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384.exe

Filesize
741KB

MD5
87b130973279b12e8c3314b8d53a282e

SHA1
2b8a1f62785c1c2c2bc2182e223ac6f6b291a63f

SHA256
4ba467487bca4bf5effb891afee667b7c75f4b7aa1f489fe1970bc98ddd85384

SHA512
93172075b0642077bdbf28e38b1c05c9d564e3c44cbbc957e077a412f25fafa8481f2c50b05ba5a7036a82a2e186fbb57aff4a7f96e9db62e1f37f235516ba4c

Download Submit
memory/1524-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1524-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1524-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1524-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1524-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-2-0x0000000004A00000-0x0000000004B1B000-memory.dmp

Filesize
1.1MB

Download
memory/3540-1-0x0000000002D80000-0x0000000002E16000-memory.dmp

Filesize
600KB

Download
memory/4896-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4896-37-0x0000000000400000-0x0000000000537000-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