djvu | 34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939

Analysis

max time kernel
296s
max time network
303s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
15/04/2024, 04:50

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General

Target
34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
Size 824KB
Sample240415-fgbdtahe2w
SHA256 34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939
MD5 2d1de5e1866c690b169ecb4010801f62
SHA1 535f658da46481e9393869b1a3c1fa42978138e0
SHA512 7ca0476a1d793aa399e9fc72a61a664912d804f171484df51112a1c734d162358219968bd135170a2043265f66eefdacf99140c54dbe6b9e030d38865a19cda8
SSDEEP 12288:TVhYKYDyW0MAPKflv90xc9f9mNH/OD5QZpZ1eYWA+JdqYNlGSrvB:ni+W7Ayh90WFIfWuZIi+jqY1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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/3284-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4640-3-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/3284-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3284-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3284-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3284-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4188-38-0x0000000000400000-0x0000000000537000-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
784	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-1-5-21-3998431567-3716957556-781226098-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d6cf60b6-d54d-4fd1-8a3d-bdd7b6ff3f2c\\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe\" --AutoStart"	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.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 4640 set thread context of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 3800 set thread context of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76

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
3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
4188	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
4188	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 4640 wrote to memory of 3284	4640	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	72
PID 3284 wrote to memory of 784	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	73
PID 3284 wrote to memory of 784	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	73
PID 3284 wrote to memory of 784	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	73
PID 3284 wrote to memory of 3800	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	74
PID 3284 wrote to memory of 3800	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	74
PID 3284 wrote to memory of 3800	3284	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	74
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76
PID 3800 wrote to memory of 4188	3800	34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe	76

C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
"C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
  "C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3284
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d6cf60b6-d54d-4fd1-8a3d-bdd7b6ff3f2c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:784
- - C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
    "C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3800
  - - C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
      "C:\Users\Admin\AppData\Local\Temp\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669
MD5 d1dd7a00ce73518932c811f701be1f45
SHA1 6ed624589a811394e17535336ff8fea311ce10cf
SHA512 885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 61c7f23f4565fa9e333a0600066b82903093d7e32274963a571cea5bbc17c314
MD5 9ca4f1604f465e8c0518fdc13cbc3c0d
SHA1 4c4d4a314f8ad61549d118a619f21a1eb6e26f18
SHA512 cbd1032af51d10588318749f2c65c803f5ad15ec8770d18430278b91b0b4df8d07945de1bc7a03b3940b47e1e1455a16139f1f681274ffddaa789883442336e9
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 e7a776bc7b65f2841975a2492df98548cefef716484123ed6658a2371ffbfb0e
MD5 166f4c91e16030af52b0270a2d844705
SHA1 311d6ef93039ad964830c97f71e6fe9c6b4f084b
SHA512 92e17e44cf05fcb784721d6e9703c462996a8b0826917094ba71fa564055f056f63e8b4be5439fad77293c02b81205c400505fef8e420198179c0bf17de2242a
MD5 SHA1 SHA512

Submit Download

34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe

Path C:\Users\Admin\AppData\Local\d6cf60b6-d54d-4fd1-8a3d-bdd7b6ff3f2c\34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939.exe
Size 824KB
SHA256 34e7290bae98aa9b4a066544783a1f80cb025f66215e650ae2692c581ffe0939
MD5 2d1de5e1866c690b169ecb4010801f62
SHA1 535f658da46481e9393869b1a3c1fa42978138e0
SHA512 7ca0476a1d793aa399e9fc72a61a664912d804f171484df51112a1c734d162358219968bd135170a2043265f66eefdacf99140c54dbe6b9e030d38865a19cda8
SSDEEP 12288:TVhYKYDyW0MAPKflv90xc9f9mNH/OD5QZpZ1eYWA+JdqYNlGSrvB:ni+W7Ayh90WFIfWuZIi+jqY1
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3284-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3284-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3284-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3284-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3284-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3800-20-0x0000000002F10000-0x0000000002FAD000-memory.dmp

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memory/4188-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4188-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4640-3-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

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memory/4640-1-0x0000000004960000-0x00000000049F6000-memory.dmp

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