djvu | 8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2

Analysis

max time kernel
147s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
17/04/2024, 00:01

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General

Target
8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
Size 769KB
Sample240417-abamfahf2x
SHA256 8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2
MD5 d72d35ec8ab0941c558711e1eb70c52e
SHA1 ed84adc5ea0ed766577f4a24d7ab30073ac962be
SHA512 c8e19a8b81de77bafd82ab1ae01dd1c71896b8c6883219e03a4d391a1156367408a17cfd633553f041ff2d3c0e97241fa9b911fbebbc89776239c23e17ea6635
SSDEEP 12288:0AzB/cZVxYjWk9p7wjRtkMXqgAq/ezxcZwTwdQK9S671FHgwW6Y0MK:LcZk1/wLhXqTqWzxcC31wlgwy0M
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 17 IoCs

resource	yara_rule
behavioral2/memory/1300-2-0x0000000004BE0000-0x0000000004CFB000-memory.dmp	family_djvu
behavioral2/memory/5108-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2056-39-0x0000000000400000-0x0000000000537000-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
1632	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-1-5-21-8492748-3358837828-1435473090-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\da8799f6-f573-49b5-84b1-ab12aea675fc\\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe\" --AutoStart"	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.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
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1300 set thread context of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 572 set thread context of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.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
5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
2056	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
2056	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 1300 wrote to memory of 5108	1300	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	81
PID 5108 wrote to memory of 1632	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	82
PID 5108 wrote to memory of 1632	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	82
PID 5108 wrote to memory of 1632	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	82
PID 5108 wrote to memory of 572	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	83
PID 5108 wrote to memory of 572	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	83
PID 5108 wrote to memory of 572	5108	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	83
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86
PID 572 wrote to memory of 2056	572	8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe	86

C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
"C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
  "C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5108
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\da8799f6-f573-49b5-84b1-ab12aea675fc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1632
- - C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
    "C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:572
  - - C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
      "C:\Users\Admin\AppData\Local\Temp\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2056

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 9349878d22734eb8d3a6111fcddd3d6b8f89e304d40766dbf728437281dcd992
MD5 cdce5838e29c9e6eb3ba9f14b98a4273
SHA1 899d15721f75a164b0e6f06ba01545552843b6b6
SHA512 c9237ce071042ece8e2b2201f508b4b78cf48da788b328eaec3a32671daaf721bec8bc641567467f74142007ba0647c5ec6a6c24e3f1543e624b0264803aa16d
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 778887f7511531f2a1616c1761745a5ef2df60782d5b0d1d828b91f9be3c88f1
MD5 0a9fa40a54c75a0dc3389c48fa8e124c
SHA1 21091cf7bb6d94e442b5c406cb4c7a665e13e935
SHA512 800679c09440cfa721028167a525bcbc63338d447263f105f55aa2b1707f0b61692a6552702e624f885f49e44e2adf88f490a421aed18c88f6cb96a58a606b6c
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 d89584918ab26aaee8e2c331d96790c54881b2a7de42f340dec76d04a46a89c2
MD5 bcaa09c29ccacb3b5aade78b8ed5b990
SHA1 43ae8bb1f676979d12bcff0f2d12a16eb066ab51
SHA512 8903696da8cfb1db895f9c8176413cf8d1c19890e1d819513f8c9bc875fd9941df73f25c4d521fe88a04c1b539ead64950bc4a0735dd0393fd71d97aa2d998af
MD5 SHA1 SHA512

Submit Download

8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe

Path C:\Users\Admin\AppData\Local\da8799f6-f573-49b5-84b1-ab12aea675fc\8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2.exe
Size 769KB
SHA256 8878c3312221c49790739731f7c2ee4303c6107fb2d9aa79a23cd003906eb0f2
MD5 d72d35ec8ab0941c558711e1eb70c52e
SHA1 ed84adc5ea0ed766577f4a24d7ab30073ac962be
SHA512 c8e19a8b81de77bafd82ab1ae01dd1c71896b8c6883219e03a4d391a1156367408a17cfd633553f041ff2d3c0e97241fa9b911fbebbc89776239c23e17ea6635
SSDEEP 12288:0AzB/cZVxYjWk9p7wjRtkMXqgAq/ezxcZwTwdQK9S671FHgwW6Y0MK:LcZk1/wLhXqTqWzxcC31wlgwy0M
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/572-20-0x0000000002EC0000-0x0000000002F60000-memory.dmp

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memory/1300-1-0x0000000003000000-0x000000000309F000-memory.dmp

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memory/1300-2-0x0000000004BE0000-0x0000000004CFB000-memory.dmp

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memory/2056-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2056-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5108-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5108-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5108-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5108-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5108-4-0x0000000000400000-0x0000000000537000-memory.dmp

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