djvu | 0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 01:05

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General

Target
0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
Size 809KB
Sample240529-bfvnvach22
SHA256 0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55
MD5 632ff32f4f76ac146e8961917ec20ee7
SHA1 3134b75f6a13e37e5ac5534797a6240f4a45e538
SHA512 fd064f9e5da6dd76ad2e6968bc09ad9fab13b8fb6d3561cbf48fbdd9a453f8796c5030a11fb5e2ba489472b1b55aec98c8b18b44c617d07b5c0235ba9468317d
SSDEEP 12288:XpXntUO8LynCbrF4Bv3mnNNLQOvZc9koUTiTi1BwMONp6qju09z/05F3:3UjLyC/cv3mnxvw7UEi1Bop6qC5F
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://sajdfue.com/test1/get.php

Attributes

extension
.vook
offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
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/3ed7a617738550b0a00c5aa231c0752020240316170955/d71ce1 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: 0857PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3248-2-0x00000000029D0000-0x0000000002AEB000-memory.dmp	family_djvu
behavioral2/memory/2388-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2388-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2388-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2388-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2388-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4752-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4752-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4752-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3060	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b64c229f-d492-4361-b323-ca65b71c750a\\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe\" --AutoStart"	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3248 set thread context of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 1124 set thread context of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1600	4752	WerFault.exe	95

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 3248 wrote to memory of 2388	3248	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	91
PID 2388 wrote to memory of 3060	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	92
PID 2388 wrote to memory of 3060	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	92
PID 2388 wrote to memory of 3060	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	92
PID 2388 wrote to memory of 1124	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	93
PID 2388 wrote to memory of 1124	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	93
PID 2388 wrote to memory of 1124	2388	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	93
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95
PID 1124 wrote to memory of 4752	1124	0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe	95

C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
"C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
  "C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b64c229f-d492-4361-b323-ca65b71c750a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3060
- - C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
    "C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
      "C:\Users\Admin\AppData\Local\Temp\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4752
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 568
        5⤵
        Program crash
        
        PID:1600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4752 -ip 4752
1⤵
PID:3828

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2752

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe

Path C:\Users\Admin\AppData\Local\b64c229f-d492-4361-b323-ca65b71c750a\0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55.exe
Size 809KB
SHA256 0aeddd756cf2991b1dcb283318dc895e81b5a54cfa560fef6234936a8f2dbd55
MD5 632ff32f4f76ac146e8961917ec20ee7
SHA1 3134b75f6a13e37e5ac5534797a6240f4a45e538
SHA512 fd064f9e5da6dd76ad2e6968bc09ad9fab13b8fb6d3561cbf48fbdd9a453f8796c5030a11fb5e2ba489472b1b55aec98c8b18b44c617d07b5c0235ba9468317d
SSDEEP 12288:XpXntUO8LynCbrF4Bv3mnNNLQOvZc9koUTiTi1BwMONp6qju09z/05F3:3UjLyC/cv3mnxvw7UEi1Bop6qC5F
MD5 SHA1 SHA512 SSDEEP

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memory/1124-27-0x0000000000400000-0x0000000000B73000-memory.dmp

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memory/1124-21-0x0000000000400000-0x0000000000B73000-memory.dmp

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memory/2388-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2388-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2388-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2388-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2388-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3248-1-0x00000000028C0000-0x0000000002957000-memory.dmp

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memory/3248-2-0x00000000029D0000-0x0000000002AEB000-memory.dmp

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memory/4752-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4752-26-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4752-24-0x0000000000400000-0x0000000000537000-memory.dmp

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