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
behavioral2/memory/4064-2-0x00000000025C0000-0x00000000026DB000-memory.dmp	family_djvu
behavioral2/memory/3120-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/780-41-0x0000000000400000-0x0000000000537000-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
3852	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-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cd6cbf24-7128-4f31-927f-89512832905d\\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
1	api.2ip.ua
2	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4064 set thread context of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4480 set thread context of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.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
3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
780	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
780	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 4064 wrote to memory of 3120	4064	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	81
PID 3120 wrote to memory of 3852	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	82
PID 3120 wrote to memory of 3852	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	82
PID 3120 wrote to memory of 3852	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	82
PID 3120 wrote to memory of 4480	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	83
PID 3120 wrote to memory of 4480	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	83
PID 3120 wrote to memory of 4480	3120	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	83
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86
PID 4480 wrote to memory of 780	4480	317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe	86

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:4064
- C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
  "C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3120
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\cd6cbf24-7128-4f31-927f-89512832905d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3852
- - 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:4480
  - - C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe
      "C:\Users\Admin\AppData\Local\Temp\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:780

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
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
c300bbc1addc7b3cfb7679c43e43b97b

SHA1
10d3b7193544be9c63cb2408018a5808b56951f3

SHA256
5bd309bea9f4994ae84bac237e6337650b357e19f0a8c05de97622ee38436c9a

SHA512
f1fd0c9b7d1e8d0fa3add82295a4d838e83dec42944b12689fa7e3493185cec292443e68aec9fcd3bce1293e65859c340bc39fa412f6544449eb142f0e506d9d

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

Filesize
392B

MD5
b402a6a3aa6ff3355d81f7ef9f48d6d7

SHA1
d94de233f63e48c7b2bec161b9588beed3d74230

SHA256
390528b07bf9b289ae26ef90693936e257ed49dd6778fab3f0250f8a5c8f0dd8

SHA512
a65a35e78a92b8bcecdcf8cfd174d8b9d2b1ff8bf545d8c0c018476a05f4e3c67116231d7c57388c9278f02b123425b1a1b3a8cac91781cff90d34a6afc96e0c

Download Submit
C:\Users\Admin\AppData\Local\cd6cbf24-7128-4f31-927f-89512832905d\317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70.exe

Filesize
731KB

MD5
d51cf917da05a65c391ed414098d55cf

SHA1
af96810d796ce448101d215814843dbd3e2ad26a

SHA256
317b4996cbec7ddf883ccf2096d16fe54555585cd3e2a08f30f5ad9681c20a70

SHA512
816cc4dc9c4c9aa45fd0b1d085b46e23eca4dd1c89eba4460f8661b46fa995ce16a3d339156b0bece6336bb3b33f40a35099e978cd609bdd49188c065ac2308a

Download Submit
memory/780-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/780-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3120-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3120-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3120-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3120-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3120-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4064-1-0x0000000002520000-0x00000000025BE000-memory.dmp

Filesize
632KB

Download
memory/4064-2-0x00000000025C0000-0x00000000026DB000-memory.dmp

Filesize
1.1MB

Download
memory/4480-34-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/4480-24-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads