djvu | 317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70

General

Target

317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
Size

731KB
MD5

d51cf917da05a65c391ed414098d55cf
SHA1

af96810d796ce448101d215814843dbd3e2ad26a
SHA256

317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70
SHA512

816cc4dc9c4c9aa45fd0b1d085b46e23eca4dd1c89eba4460f8661b46fa995ce16a3d339156b0bece6336bb3b33f40a35099e978cd609bdd49188c065ac2308a
SSDEEP

12288:Iztql3fUxOTPvWbIAOOyQ2yiAOrFUzljlzvYQKYbN8TWTVVN9pQ+x:IzB8LwVOe+Q9bTxz

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 17 IoCs

resource	yara_rule
behavioral1/memory/4444-2-0x00000000024C0000-0x00000000025DB000-memory.dmp	family_djvu
behavioral1/memory/512-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/512-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/512-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/512-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/512-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4844-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4220	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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\188c1674-c215-45ae-8415-48081ccfebdc\\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe\" --AutoStart"	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.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
19	api.2ip.ua
25	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 3228 set thread context of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94

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
512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
4844	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
4844	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 4444 wrote to memory of 512	4444	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	90
PID 512 wrote to memory of 4220	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	91
PID 512 wrote to memory of 4220	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	91
PID 512 wrote to memory of 4220	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	91
PID 512 wrote to memory of 3228	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	92
PID 512 wrote to memory of 3228	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	92
PID 512 wrote to memory of 3228	512	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	92
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94
PID 3228 wrote to memory of 4844	3228	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	94

C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
"C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
  "C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:512
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\188c1674-c215-45ae-8415-48081ccfebdc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4220
- - C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
    "C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3228
  - - C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
      "C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4844

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

Query Registry

1

T1012

System Information Discovery

2

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
84721cd35068ddfc92aa0a4c829fbd2a

SHA1
71d7e227e0f3fcbb585598d0f3757a8935b748ce

SHA256
bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199

SHA512
f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc

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
06913c05b37a09f3da64cca2bc415015

SHA1
5a1df18b1a80d618d3fc680552777882967cd23b

SHA256
ae0d43e5d439aa28885d39007d782db32da67edee0e0109054042b5b29099a33

SHA512
52265fbefe200069bb5fc2b0a8a94edfe261ac334ce5b7f6abd53191d3d21ac406a6491f2f32fbe18e66e0a7a6e88e75f842b63264add96962faef03e28d8ff0

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

Filesize
392B

MD5
3e27f18ca1c341cb187df6e58e88347a

SHA1
f31191d2b1fd101e237ab25271a6f6b2edbd35ec

SHA256
5b1abae8b9331c68d437697e20a7e85b672fee60b5aa3ff8214f55996f22c078

SHA512
d43e5d0ea906c8323d471f4ee4c40e6bb530aaa1e1602d01d9a373d0d0a115d0afdfc198d25164ee0b2f109292a87516c4ee69645a53b16de435311d4b6fc943

Download Submit
C:\Users\Admin\AppData\Local\188c1674-c215-45ae-8415-48081ccfebdc\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe

Filesize
731KB

MD5
d51cf917da05a65c391ed414098d55cf

SHA1
af96810d796ce448101d215814843dbd3e2ad26a

SHA256
317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70

SHA512
816cc4dc9c4c9aa45fd0b1d085b46e23eca4dd1c89eba4460f8661b46fa995ce16a3d339156b0bece6336bb3b33f40a35099e978cd609bdd49188c065ac2308a

Download Submit
memory/512-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3228-23-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/3228-22-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/4444-2-0x00000000024C0000-0x00000000025DB000-memory.dmp

Filesize
1.1MB

Download
memory/4444-1-0x0000000002420000-0x00000000024BA000-memory.dmp

Filesize
616KB

Download
memory/4844-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4844-39-0x0000000000400000-0x0000000000537000-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