djvu | a41facdd85c741e5cc35c72885670abc75becf83ebc9edf9dde569ad76ca23f1

General

Target

899bd6c614a641095103ba89383cbb00_NEAS.exe
Size

774KB
MD5

899bd6c614a641095103ba89383cbb00
SHA1

6b948eb7961033af44482dd922079a297272ddb2
SHA256

a41facdd85c741e5cc35c72885670abc75becf83ebc9edf9dde569ad76ca23f1
SHA512

ac5829d704a541701d360882d14239a5b25f4cc611678299a6eb24a6b81b669bca76e93441c7a84cd6d80213b485737da300fcd556267e98f4a5c46bcc0addca
SSDEEP

24576:MjfL0DlNW6/5hIclEL/kHk8f/NLgo9Hc:UGWVpIdks

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qehu
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/1444-2-0x00000000049E0000-0x0000000004AFB000-memory.dmp	family_djvu
behavioral2/memory/748-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/748-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/748-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/748-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/748-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4564-36-0x0000000000400000-0x0000000000537000-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	899bd6c614a641095103ba89383cbb00_NEAS.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3496	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\\9fe86c36-c0e7-432b-a2d6-40d05dffb9aa\\899bd6c614a641095103ba89383cbb00_NEAS.exe\" --AutoStart"	899bd6c614a641095103ba89383cbb00_NEAS.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
42	api.2ip.ua
43	api.2ip.ua
50	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1444 set thread context of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 4028 set thread context of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104

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
748	899bd6c614a641095103ba89383cbb00_NEAS.exe
748	899bd6c614a641095103ba89383cbb00_NEAS.exe
4564	899bd6c614a641095103ba89383cbb00_NEAS.exe
4564	899bd6c614a641095103ba89383cbb00_NEAS.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 1444 wrote to memory of 748	1444	899bd6c614a641095103ba89383cbb00_NEAS.exe	99
PID 748 wrote to memory of 3496	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	100
PID 748 wrote to memory of 3496	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	100
PID 748 wrote to memory of 3496	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	100
PID 748 wrote to memory of 4028	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	101
PID 748 wrote to memory of 4028	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	101
PID 748 wrote to memory of 4028	748	899bd6c614a641095103ba89383cbb00_NEAS.exe	101
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104
PID 4028 wrote to memory of 4564	4028	899bd6c614a641095103ba89383cbb00_NEAS.exe	104

C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe
  "C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:748
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9fe86c36-c0e7-432b-a2d6-40d05dffb9aa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3496
- - C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4028
  - - C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe
      "C:\Users\Admin\AppData\Local\Temp\899bd6c614a641095103ba89383cbb00_NEAS.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4564

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=4136 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:2844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
648c85839e7254a2fbc93f592bb7447f

SHA1
55cdd89cd957f4fd1969358ea24f6d68623faa36

SHA256
20b6e820f80d6e85ed693c25d89059dce8eca4be24fbb2393c5c7c2fc409ab74

SHA512
426874318871dc8f1011739836380ccc9fed292cffc4688a9eed74d2a3c6e0265c148c093db31945f8e73ebe8aed43ab2b0f936d3ed2bf76adcdae17e8c716e7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
01526cb7208b998e5154761d1cc137ce

SHA1
564929264212da4ed6651098b2f0fb8f119040cb

SHA256
813db3e0bdaab5096e5c781f7db7e7a13c20df1db3cdfe3a237a1f9ed165c749

SHA512
e97de4c429c29c912bdde3019eaa912538adb044b0cc5adb4efa116a4eac9e39953a3df0476f7aa20f676efc4cc283074197cd4826d0f0fc20393264525fc919

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
b2a6a6cfdd225bcfc2fcea003c32180c

SHA1
db3fd0c6d385dc140383884be2f59a6b52c62b83

SHA256
0c8b00cbd0740da09d1f3835e64633cd60ecb7e9e5fad0515110043af8f5a6be

SHA512
568f29768e9d2e7141e8bfad90350e7ed6a5b28883f5319d8ea38a682797df9869eca5a8d77f4cc8f2277a992c2825bc6828efa8ff505dd5bd1a6af71be236e8

Download Submit
C:\Users\Admin\AppData\Local\9fe86c36-c0e7-432b-a2d6-40d05dffb9aa\899bd6c614a641095103ba89383cbb00_NEAS.exe

Filesize
774KB

MD5
899bd6c614a641095103ba89383cbb00

SHA1
6b948eb7961033af44482dd922079a297272ddb2

SHA256
a41facdd85c741e5cc35c72885670abc75becf83ebc9edf9dde569ad76ca23f1

SHA512
ac5829d704a541701d360882d14239a5b25f4cc611678299a6eb24a6b81b669bca76e93441c7a84cd6d80213b485737da300fcd556267e98f4a5c46bcc0addca

Download Submit
memory/748-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/748-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/748-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/748-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/748-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1444-1-0x00000000030A0000-0x0000000003136000-memory.dmp

Filesize
600KB

Download
memory/1444-2-0x00000000049E0000-0x0000000004AFB000-memory.dmp

Filesize
1.1MB

Download
memory/4564-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads