djvu | add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe

Analysis

max time kernel
143s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
30/04/2024, 07:13

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General

Target
add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
Size 771KB
Sample240430-h2de1sfe91
SHA256 add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe
MD5 ed382c861511b7e1009ba3942b3d70a3
SHA1 24a93b4c921cff9c7876c8a1f97f82c8a8b47e8f
SHA512 95974f8a68ec255113f4912eb258b2b3937ab4dd128ceb4138a6d3946282e8a1a1cda0986ca0e108ee54deac8a143eac7a47e17991b8b5ec2bcb937e1d2c3e67
SSDEEP 24576:PIPHh+iX4tF5XmDMXpk2irTM7IKgt40ApjK:SH1X4tFoDkqr2Q40ApjK
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 17 IoCs

resource	yara_rule
behavioral2/memory/3724-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/904-3-0x0000000003740000-0x000000000385B000-memory.dmp	family_djvu
behavioral2/memory/3724-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3724-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3724-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3724-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/964-46-0x0000000000400000-0x0000000000537000-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
3444	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-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7b4749af-cc9e-4fe1-bee7-a52074253741\\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe\" --AutoStart"	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.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
6	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 904 set thread context of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 1104 set thread context of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87

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
3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
964	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
964	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 904 wrote to memory of 3724	904	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	80
PID 3724 wrote to memory of 3444	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	83
PID 3724 wrote to memory of 3444	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	83
PID 3724 wrote to memory of 3444	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	83
PID 3724 wrote to memory of 1104	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	84
PID 3724 wrote to memory of 1104	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	84
PID 3724 wrote to memory of 1104	3724	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	84
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87
PID 1104 wrote to memory of 964	1104	add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe	87

C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
"C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:904
- C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
  "C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3724
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7b4749af-cc9e-4fe1-bee7-a52074253741" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3444
- - C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
    "C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1104
  - - C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
      "C:\Users\Admin\AppData\Local\Temp\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:964

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 20794b29b0d071e4b632bea0446b1dea7ef431942d5c87f8f1d7895f68059367
MD5 6b11a0efea747a4cffd2e63ca1740a2f
SHA1 73a789f0f821196c6f615091da661b95ecb80a35
SHA512 8326060ee845aad3b9bb7c8e7699a23d4c5748f7aa784110d27aa30e0c38af0c3dce6226f031344efc2cf7600b373de208662935836b8c4e82c3b887416a9ba5
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 c9c7630e31725b087cfb9f25c84a3f9f8b5459a5511589cac67fb327c5b2b485
MD5 cd443e47309bd557a168c84c5ccaa87a
SHA1 97354f99c16d1f567a7488dc3afefcc9e7712b41
SHA512 c57250479664cda5f084cb81440390a2203d7aeeecb4e3e0856e361089eabf07204eb4e780f196511cc0632062e52b1925d70d5b4633535c8108bfe5308ce8e5
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 4dceab1f3a1cbb8106a7202c9933621e953d424c2f05cb6c7774893843bc422e
MD5 58806cb517399ff2fd5be6652cb93877
SHA1 48a3a63be5741ad791e2df19324a7b2d22304cbf
SHA512 cda820d511e03ae3be854ffa9568db222c9890445f68c9e676058fa6d4b5a73f08bbbb5e3d38084ee5dd4fd7ef94ddec912740f818a0b2f99352a7089f2eebed
MD5 SHA1 SHA512

Submit Download

add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe

Path C:\Users\Admin\AppData\Local\7b4749af-cc9e-4fe1-bee7-a52074253741\add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe.exe
Size 771KB
SHA256 add64cc844fa737ce3bc7818d5801cacec01f90373bc2e4ecb99bdad6aa973fe
MD5 ed382c861511b7e1009ba3942b3d70a3
SHA1 24a93b4c921cff9c7876c8a1f97f82c8a8b47e8f
SHA512 95974f8a68ec255113f4912eb258b2b3937ab4dd128ceb4138a6d3946282e8a1a1cda0986ca0e108ee54deac8a143eac7a47e17991b8b5ec2bcb937e1d2c3e67
SSDEEP 24576:PIPHh+iX4tF5XmDMXpk2irTM7IKgt40ApjK:SH1X4tFoDkqr2Q40ApjK
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/904-1-0x0000000001E00000-0x0000000001E95000-memory.dmp

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memory/904-3-0x0000000003740000-0x000000000385B000-memory.dmp

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memory/964-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-44-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-46-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-45-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-41-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-43-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/964-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1104-25-0x0000000001DE0000-0x0000000001E7F000-memory.dmp

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memory/3724-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3724-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3724-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3724-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3724-6-0x0000000000400000-0x0000000000537000-memory.dmp

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