djvu | 6ba93504015e56bfef38d598f346f85f907829cdaae96cdd2ae07177457e1420

Analysis

max time kernel
141s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-01-2024 18:24

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General

Target

572c582f30cc0581663158d145c17326.exe
Size

756KB
MD5

572c582f30cc0581663158d145c17326
SHA1

1cebe746cfb3ec8d101618676c91911e0a673082
SHA256

6ba93504015e56bfef38d598f346f85f907829cdaae96cdd2ae07177457e1420
SHA512

f0a794e6454d59bcd54da3e982411b5973060b3baa672a5235f775f4f30b58f3c6d88bf8ba7501d01c35b7486279e2d1f4a40f2704676de570a833de61d42dcf
SSDEEP

12288:LW3CqXCqxfQkDB6rcoy8nUZry5Gx9mrwMywXNiwSfJEtKuARwoOeaw:S3CwfzF6Ij+UZrH9I9ywXgwVtH29a

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.nooa
offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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. You can get and look video overview decrypt tool: https://we.tl/t-CnI3tI6Ktv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0322gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/2204-3-0x00000000045C0000-0x00000000046DB000-memory.dmp	family_djvu
behavioral1/memory/2424-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2424-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2424-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2424-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2652-59-0x0000000000400000-0x0000000000537000-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
2872	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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\24dafb69-7366-4510-99ea-1ccf68f9e9dc\\572c582f30cc0581663158d145c17326.exe\" --AutoStart"	572c582f30cc0581663158d145c17326.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
3	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2620 set thread context of 2652	2620	572c582f30cc0581663158d145c17326.exe	32

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
2424	572c582f30cc0581663158d145c17326.exe
2424	572c582f30cc0581663158d145c17326.exe
2652	572c582f30cc0581663158d145c17326.exe
2652	572c582f30cc0581663158d145c17326.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2204 wrote to memory of 2424	2204	572c582f30cc0581663158d145c17326.exe	28
PID 2424 wrote to memory of 2872	2424	572c582f30cc0581663158d145c17326.exe	30
PID 2424 wrote to memory of 2872	2424	572c582f30cc0581663158d145c17326.exe	30
PID 2424 wrote to memory of 2872	2424	572c582f30cc0581663158d145c17326.exe	30
PID 2424 wrote to memory of 2872	2424	572c582f30cc0581663158d145c17326.exe	30
PID 2424 wrote to memory of 2620	2424	572c582f30cc0581663158d145c17326.exe	31
PID 2424 wrote to memory of 2620	2424	572c582f30cc0581663158d145c17326.exe	31
PID 2424 wrote to memory of 2620	2424	572c582f30cc0581663158d145c17326.exe	31
PID 2424 wrote to memory of 2620	2424	572c582f30cc0581663158d145c17326.exe	31
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32
PID 2620 wrote to memory of 2652	2620	572c582f30cc0581663158d145c17326.exe	32

C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
"C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
  "C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\24dafb69-7366-4510-99ea-1ccf68f9e9dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2872
- - C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
    "C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
      "C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2652

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

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

Filesize
1KB

MD5
e814e0a6788f0e0fb95e45db6f3b291b

SHA1
3de4da0dd4ccd68ddce9f235e2db029258f63d6f

SHA256
d87c447a0b3a6fab910b157f8f4c873bb5f9615c08022f35c1200851829812fc

SHA512
28fab9f348e67964aa188aa1fa357f4bcc1bc538ae0793bed7704cad376333698f4d9dde3d3c4560b6ef3bc0fa72bfcbbc49ad464635ab093cd09de3d3934642

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
b230dfa06907f0a61ba3a4a6d9604fae

SHA1
8ed04391c3cfc02804425ec2feba60243fd22e9d

SHA256
c360a6f870cecb284813c400b01d93de3847a41aa741ec04018c32af0c4af36e

SHA512
24360a5ba688d23a45b560b26f67b9b4fcbb49f07b82105fa9d34264d7cbc710d861c6a0f8a465bead09b9970ab1d3876884ce283934e77214238cb783d88b30

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
a88ad4e6e8eda416100a10ea4a90e204

SHA1
5b4ff406e5d84c2ce136e167dc3dd0161c051485

SHA256
f8ac514fa1ef47e9bc80406d5fdc7ecef080b968534aa0ff0e201e08a6fecfd1

SHA512
5ddac240099dcba047e763484f484a0855cb3825cb0278e63b4468f8405aa6ee88476b7dd8971ade993de615ede26fda12db99584aad40d55a4ca227420b7ef5

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

Filesize
392B

MD5
0ad82284df66241b4fa643cb74900993

SHA1
7082ef7e5ea1b33de0af77afe1f012ae489040e8

SHA256
68137a15f7fff6b91097a38a7812b1ba713cde4b609eeeccd4556ca31179dc53

SHA512
e126b020307004f82e62a906ffe45934ba45952385a30ef61e84de9a2153202632358bf0d28117ab121ae78c984c06fb3ba31e6f0e30eeac5a4d9b620bd70fea

Download Submit
C:\Users\Admin\AppData\Local\24dafb69-7366-4510-99ea-1ccf68f9e9dc\572c582f30cc0581663158d145c17326.exe

Filesize
756KB

MD5
572c582f30cc0581663158d145c17326

SHA1
1cebe746cfb3ec8d101618676c91911e0a673082

SHA256
6ba93504015e56bfef38d598f346f85f907829cdaae96cdd2ae07177457e1420

SHA512
f0a794e6454d59bcd54da3e982411b5973060b3baa672a5235f775f4f30b58f3c6d88bf8ba7501d01c35b7486279e2d1f4a40f2704676de570a833de61d42dcf

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4F87.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
memory/2204-1-0x0000000004520000-0x00000000045B2000-memory.dmp

Filesize
584KB

Download
memory/2204-3-0x00000000045C0000-0x00000000046DB000-memory.dmp

Filesize
1.1MB

Download
memory/2204-7-0x0000000004520000-0x00000000045B2000-memory.dmp

Filesize
584KB

Download
memory/2204-0-0x0000000004520000-0x00000000045B2000-memory.dmp

Filesize
584KB

Download
memory/2424-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2424-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2424-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2424-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2424-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-29-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2620-30-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2652-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download