djvu | 6ba93504015e56bfef38d598f346f85f907829cdaae96cdd2ae07177457e1420

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

C2

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 18 IoCs

resource	yara_rule
behavioral2/memory/4272-2-0x0000000004A60000-0x0000000004B7B000-memory.dmp	family_djvu
behavioral2/memory/4080-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3624-40-0x0000000000400000-0x0000000000537000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	572c582f30cc0581663158d145c17326.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1292	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-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5dbebb28-f818-4d80-98c4-64afbf023278\\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
7	api.2ip.ua
8	api.2ip.ua
31	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4272 set thread context of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4184 set thread context of 3624	4184	572c582f30cc0581663158d145c17326.exe	98

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
4080	572c582f30cc0581663158d145c17326.exe
4080	572c582f30cc0581663158d145c17326.exe
3624	572c582f30cc0581663158d145c17326.exe
3624	572c582f30cc0581663158d145c17326.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4272 wrote to memory of 4080	4272	572c582f30cc0581663158d145c17326.exe	92
PID 4080 wrote to memory of 1292	4080	572c582f30cc0581663158d145c17326.exe	93
PID 4080 wrote to memory of 1292	4080	572c582f30cc0581663158d145c17326.exe	93
PID 4080 wrote to memory of 1292	4080	572c582f30cc0581663158d145c17326.exe	93
PID 4080 wrote to memory of 4184	4080	572c582f30cc0581663158d145c17326.exe	94
PID 4080 wrote to memory of 4184	4080	572c582f30cc0581663158d145c17326.exe	94
PID 4080 wrote to memory of 4184	4080	572c582f30cc0581663158d145c17326.exe	94
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98
PID 4184 wrote to memory of 3624	4184	572c582f30cc0581663158d145c17326.exe	98

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:4272
- C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
  "C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4080
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5dbebb28-f818-4d80-98c4-64afbf023278" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1292
- - 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:4184
  - - C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe
      "C:\Users\Admin\AppData\Local\Temp\572c582f30cc0581663158d145c17326.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3624

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

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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
62b7372195c2f43c12bf3b3958bb661d

SHA1
6178fd3c08372f09db3639b3aef8171a8d3258f3

SHA256
c88d759bcdbeb3b734fc26052dcad4c89957df2ebc217470cd80e84667bf3c51

SHA512
fca267f8396e0f094d3c4e8c69374c4283da03630d572528464afb99d90ce1bcaf99262d82c1b3dab47aa071f728faa23edc323d590aba1bb9cd3149885770ed

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

Filesize
392B

MD5
582f423b63096fddfc33af6464da9028

SHA1
d7ad0f9832ba84fc3bc52fb996877b3b81b46d80

SHA256
1a0126bb4382ebc1c852443af3deef51f7a0f64269ca9f282f93fbac2ea9d23b

SHA512
47580316ee178aebdc3cf3795d5856e7d4f0b13fad462f1c28f24613ebf73e5bdbd3b9a7b56356bb434f81ef163b10611438ee19078b72f25077fe93cffaf8bb

Download Submit
C:\Users\Admin\AppData\Local\5dbebb28-f818-4d80-98c4-64afbf023278\572c582f30cc0581663158d145c17326.exe

Filesize
756KB

MD5
572c582f30cc0581663158d145c17326

SHA1
1cebe746cfb3ec8d101618676c91911e0a673082

SHA256
6ba93504015e56bfef38d598f346f85f907829cdaae96cdd2ae07177457e1420

SHA512
f0a794e6454d59bcd54da3e982411b5973060b3baa672a5235f775f4f30b58f3c6d88bf8ba7501d01c35b7486279e2d1f4a40f2704676de570a833de61d42dcf

Download Submit
memory/3624-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3624-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4184-20-0x0000000004820000-0x00000000048BD000-memory.dmp

Filesize
628KB

Download
memory/4272-1-0x00000000049C0000-0x0000000004A54000-memory.dmp

Filesize
592KB

Download
memory/4272-2-0x0000000004A60000-0x0000000004B7B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads