djvu | f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
03/05/2024, 09:53

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General

Target
f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
Size 822KB
Sample240503-lwpsmsca31
SHA256 f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0
MD5 ff716b49ad47baa4e1e3a4f9ee4c4cae
SHA1 19a1a211409e1eccb04799edd770a0a89d8668f0
SHA512 745e33f3f1755f99a67654bb413014776a902a5e2e9be2a2db37fd293e828f4d94d6808ef8d1215cad92c02131b2e40f39956d7ef6a1700770fb3c8a121bd96d
SSDEEP 12288:240qoleHT2s8ailDJJnLYRE8EV+gBcCcTxydkMY1lWTRtl2GV9:23i2YQTLYRNEXcJTwdfYSfl2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/3192-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/484-4-0x0000000003860000-0x000000000397B000-memory.dmp	family_djvu
behavioral2/memory/3192-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3120-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1364-39-0x0000000000400000-0x0000000001A98000-memory.dmp	family_djvu
behavioral2/memory/3120-41-0x0000000000400000-0x0000000000537000-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
1264	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-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e45aef41-8049-4b62-94c8-cfa49b7d5e56\\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe\" --AutoStart"	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.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 484 set thread context of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 1364 set thread context of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.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
3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
3120	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
3120	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 484 wrote to memory of 3192	484	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	80
PID 3192 wrote to memory of 1264	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	82
PID 3192 wrote to memory of 1264	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	82
PID 3192 wrote to memory of 1264	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	82
PID 3192 wrote to memory of 1364	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	83
PID 3192 wrote to memory of 1364	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	83
PID 3192 wrote to memory of 1364	3192	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	83
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86
PID 1364 wrote to memory of 3120	1364	f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe	86

C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
"C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:484
- C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
  "C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3192
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e45aef41-8049-4b62-94c8-cfa49b7d5e56" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1264
- - C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
    "C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1364
  - - C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
      "C:\Users\Admin\AppData\Local\Temp\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3120

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 129164308e702fdc66b08a3e37443c3538cb38d3f8a9ec9f2fc242809eb2f745
MD5 fb03526b897d572b399f3cba89305c9d
SHA1 8af3cc1409538d35897494cebe129fbd25de3bdb
SHA512 a91a001a7d0ef541fb2ee9e95a441a651a5555a9b2575872aaa5fe376fb80c60fbc67183a34d24291d1b255d6a216455e93c05b1533a2c235bea40d947e96c09
MD5 SHA1 SHA512

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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 40ea0ebb32d45dac858bc2ee07b824e4ac98bd7f55515b176af158f616186fe2
MD5 4ef9420da32b046c4597087d742eaecf
SHA1 40897426ded15a6646cf42ad8e9669bdf77202fa
SHA512 b88fafa2932c5c9e463689ccac8167a27c240a9b56fa6a7ff6d0ad763f3bdf558f081cbf4f3d12524866efe3d06781b144a130fcb0688942eab97bb465aedc22
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 9687c4d22d2ca0aa5e83b61cee28cf3b7c687e2bdb06236c8c0ecdd7f84f9ae9
MD5 7dc70882dc841dfc4ee5920e9f365790
SHA1 e3c60dde4e2b081b6b3db406efb6fa8cc48e2f2d
SHA512 58c5103280fd96e7a1e8220bb924c116a8b32418c0f20653ae1c2c7278e53691e32bedcba0939e9f944ca8eb5e316d16289070245a1b9f1d1be4467b93e633bd
MD5 SHA1 SHA512

Submit Download

f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe

Path C:\Users\Admin\AppData\Local\e45aef41-8049-4b62-94c8-cfa49b7d5e56\f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0.exe
Size 822KB
SHA256 f1ed82e8d65dc01f071f68be961949731045fddd7ab9e5575f3f7509058baea0
MD5 ff716b49ad47baa4e1e3a4f9ee4c4cae
SHA1 19a1a211409e1eccb04799edd770a0a89d8668f0
SHA512 745e33f3f1755f99a67654bb413014776a902a5e2e9be2a2db37fd293e828f4d94d6808ef8d1215cad92c02131b2e40f39956d7ef6a1700770fb3c8a121bd96d
SSDEEP 12288:240qoleHT2s8ailDJJnLYRE8EV+gBcCcTxydkMY1lWTRtl2GV9:23i2YQTLYRNEXcJTwdfYSfl2
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/484-1-0x00000000037C0000-0x0000000003853000-memory.dmp

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memory/484-4-0x0000000003860000-0x000000000397B000-memory.dmp

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memory/1364-24-0x0000000000400000-0x0000000001A98000-memory.dmp

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memory/1364-39-0x0000000000400000-0x0000000001A98000-memory.dmp

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memory/3120-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-41-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-25-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3120-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-6-0x0000000000400000-0x0000000000537000-memory.dmp

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