djvu | 611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe

Analysis

max time kernel
294s
max time network
298s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
18/04/2024, 22:41

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General

Target
611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
Size 825KB
Sample240418-2ma6wsgh84
SHA256 611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe
MD5 58abe55a31e14c31899d613b8352aa8b
SHA1 746f90892894e17dc83c2331e1dd4c9da0483b2f
SHA512 e5c47096e6797ba15a7094cdd138ddf7987a9ba7a3f908deb2e584a3934a422ea966de49fcaab853ac49030113f3cb03990801f9025eb1492822550d338672a1
SSDEEP 12288:V6aTUI6c4iaqhshaglJCiv6vrGDpvYub+wo32D3U2znHhy9MRq9CKT7wh50KBmr/:ZB6ccOg/7CzXuCz3KlH4MRkz7s51mca
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/3368-2-0x0000000004A20000-0x0000000004B3B000-memory.dmp	family_djvu
behavioral2/memory/1064-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1064-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1064-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1064-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1064-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2932-38-0x0000000000400000-0x0000000000537000-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
3316	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-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\346c2211-74c3-43cf-ab10-3103d4af56a9\\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe\" --AutoStart"	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.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 3368 set thread context of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 660 set thread context of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77

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
1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
2932	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
2932	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 3368 wrote to memory of 1064	3368	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	73
PID 1064 wrote to memory of 3316	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	74
PID 1064 wrote to memory of 3316	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	74
PID 1064 wrote to memory of 3316	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	74
PID 1064 wrote to memory of 660	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	75
PID 1064 wrote to memory of 660	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	75
PID 1064 wrote to memory of 660	1064	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	75
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77
PID 660 wrote to memory of 2932	660	611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe	77

C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
"C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3368
- C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
  "C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1064
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\346c2211-74c3-43cf-ab10-3103d4af56a9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3316
- - C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
    "C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:660
  - - C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
      "C:\Users\Admin\AppData\Local\Temp\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2932

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 9e7216e6a933186a53c67090fe23f1849f1b3036897eddfed00313bef9370fb7
MD5 e4631530ca2d3fdd6a35f596669e54e7
SHA1 68d9ab4969b7609ee8a93fa2ae766c9781748d37
SHA512 dd58af9d8cb5e508e4d04872cb477f1cf9c04c68db87ccae04820fe351362296c5572b45ab416c08d41cb97374ceec3b0b0d28dfed750267622c5bf4dd79dad2
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 03467adb74d966ddbbcc5723239be33e7ae3cf5b2e070a18d28a7191eafa9f22
MD5 512f9619b4b27b122eaa5d701deb019f
SHA1 8b6ec7cbe957250c16c4c323410ae2e5e455eaac
SHA512 315cee1b5f68a9b58d3416dd3acc821226d1df7997386ca3fef6428e6b9438e55353001c08e56b3ff581b6d90dd07b16023b2036fb9a0ffdb149562ab2fe609e
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 05fee0d0793ff8e3651f99329e928cafb261afdc47371f8ba0725072ef6ba397
MD5 4fed9e729afdf8edd5559e141554e0b7
SHA1 35db366fb0a648032a6dc8180e06a3c1708713b4
SHA512 ebc6bb52cfc7eedb048d86e8a577e6a4c3c238797535b483511410c13b54d3db3503f41f740c59681d6c2e1b38aa79a65ef15014465853b7342e35e6ce978725
MD5 SHA1 SHA512

Submit Download

611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe

Path C:\Users\Admin\AppData\Local\346c2211-74c3-43cf-ab10-3103d4af56a9\611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe.exe
Size 825KB
SHA256 611e8706ab4dd4da993e08a91e6da4a91783b97285c51a69214ee7d58e37f2fe
MD5 58abe55a31e14c31899d613b8352aa8b
SHA1 746f90892894e17dc83c2331e1dd4c9da0483b2f
SHA512 e5c47096e6797ba15a7094cdd138ddf7987a9ba7a3f908deb2e584a3934a422ea966de49fcaab853ac49030113f3cb03990801f9025eb1492822550d338672a1
SSDEEP 12288:V6aTUI6c4iaqhshaglJCiv6vrGDpvYub+wo32D3U2znHhy9MRq9CKT7wh50KBmr/:ZB6ccOg/7CzXuCz3KlH4MRkz7s51mca
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/660-21-0x0000000004840000-0x00000000048D5000-memory.dmp

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memory/1064-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1064-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1064-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1064-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1064-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2932-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3368-2-0x0000000004A20000-0x0000000004B3B000-memory.dmp

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memory/3368-1-0x0000000004930000-0x00000000049CA000-memory.dmp

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