djvu | f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca

General

Target

f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
Size

792KB
MD5

4e5854fc7e8d37a95f3a520c817bdab0
SHA1

29028c91f5846f0fd8f9a6d6273cc23b02026319
SHA256

f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca
SHA512

5dd07d623b89a025e139bc40a6701ea0f97e6ea71fc7f1df9e824b5f3231fc5eb1f07087597dc4c85a3539e0ade9043aefc138973007f6ad3b74833ff287414e
SSDEEP

24576:Qj9oyGEw0Kje+1tqX+F6u2QE4z5qESTxC4:Q98jD6X+v2qqEOC

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uazq
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: 0860PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/2332-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/5092-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-38-0x0000000000400000-0x0000000000537000-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
4800	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-1-5-21-1904658062-880901768-3903781817-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c2318a73-c9bc-4525-a26c-e6362aae2799\\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe\" --AutoStart"	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2332 set thread context of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 4180 set thread context of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78

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
5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
388	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
388	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 2332 wrote to memory of 5092	2332	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	74
PID 5092 wrote to memory of 4800	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	75
PID 5092 wrote to memory of 4800	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	75
PID 5092 wrote to memory of 4800	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	75
PID 5092 wrote to memory of 4180	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	76
PID 5092 wrote to memory of 4180	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	76
PID 5092 wrote to memory of 4180	5092	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	76
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78
PID 4180 wrote to memory of 388	4180	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	78

C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
"C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
  "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5092
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c2318a73-c9bc-4525-a26c-e6362aae2799" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4800
- - C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
    "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4180
  - - C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
      "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:388

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
d1dd7a00ce73518932c811f701be1f45

SHA1
6ed624589a811394e17535336ff8fea311ce10cf

SHA256
8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669

SHA512
885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7

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
438c7d68d4581728d14a20f0c5d4ad47

SHA1
d2dc6cd213a8685c588f2d692d763b42161ec733

SHA256
9666268b7e1305a4807a71b51fdcdcb26ece4f108a8b865947ef90d827cb15b5

SHA512
4fa4a6f292daec524edb0c01469fb1e8b00c19643123dea283942ec037eebcb73c4ecb3bde5fd820643b393ce01e9dcd89618553125e2f656b5f7c7860c1ecc2

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

Filesize
392B

MD5
4b00b6f99cebf289cbf4571ea2087331

SHA1
e3073617cfc8fa13cea309cb3a746e8d39108d75

SHA256
85f58a6082bca6ff328190455e0480fc947eaa3435a5a3bb7d245fa213b828a7

SHA512
b2c80915caf8a5d5d35070916f2401bcea10eaab9a7507e3a2db3aab3de0ff7e09448094dda551c756e24130a2f652cb8e37efed379ce3574ec1b15cb3bbbc50

Download Submit
C:\Users\Admin\AppData\Local\c2318a73-c9bc-4525-a26c-e6362aae2799\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe

Filesize
792KB

MD5
4e5854fc7e8d37a95f3a520c817bdab0

SHA1
29028c91f5846f0fd8f9a6d6273cc23b02026319

SHA256
f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca

SHA512
5dd07d623b89a025e139bc40a6701ea0f97e6ea71fc7f1df9e824b5f3231fc5eb1f07087597dc4c85a3539e0ade9043aefc138973007f6ad3b74833ff287414e

Download Submit
memory/388-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2332-1-0x0000000003270000-0x000000000330A000-memory.dmp

Filesize
616KB

Download
memory/2332-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

Filesize
1.1MB

Download
memory/4180-20-0x0000000003250000-0x00000000032E4000-memory.dmp

Filesize
592KB

Download
memory/5092-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-17-0x0000000000400000-0x0000000000537000-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