djvu | faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836

Analysis

max time kernel
294s
max time network
162s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
17/05/2024, 00:42

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General

Target

faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
Size

732KB
MD5

277e4dc53b27fce67e66b8a6f9a69810
SHA1

18ba686aba18aabffeac1d85ac87a9f2ce2a27c4
SHA256

faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836
SHA512

24a767bb2adc06ef2b360a78d2aa430c02b811a455f5b28d48411166097d8802338c09aecc8c2c9033919039355fcbfe9f8a5aa9d403c44eacbc43f3c51a2cfd
SSDEEP

12288:IlCmrIHOe8Gr/lXQkL1HybD4HUn+sCpUThSo0bvIG9LeuFiPkucC+JZb:IlKhAkL1SZ+p3oBuHNzx

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/1744-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1744-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1744-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1744-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-34-0x0000000000810000-0x000000000092B000-memory.dmp	family_djvu
behavioral1/memory/2444-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-60-0x0000000000400000-0x0000000000537000-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
2696	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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\685f0fc3-bb53-4383-8161-49e66c5d9122\\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe\" --AutoStart"	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.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 2040 set thread context of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2620 set thread context of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
2444	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
2444	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 2040 wrote to memory of 1744	2040	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	28
PID 1744 wrote to memory of 2696	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	30
PID 1744 wrote to memory of 2696	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	30
PID 1744 wrote to memory of 2696	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	30
PID 1744 wrote to memory of 2696	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	30
PID 1744 wrote to memory of 2620	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	31
PID 1744 wrote to memory of 2620	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	31
PID 1744 wrote to memory of 2620	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	31
PID 1744 wrote to memory of 2620	1744	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	31
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32
PID 2620 wrote to memory of 2444	2620	faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe	32

C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
"C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
  "C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\685f0fc3-bb53-4383-8161-49e66c5d9122" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2696
- - C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
    "C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe
      "C:\Users\Admin\AppData\Local\Temp\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2444

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
c385b784ab9ca816e84a497ed6ae04cc

SHA1
ebf2dba7c1f1425116a8ff8b73eab06fc4e47a7a

SHA256
8b1eaa18dd169f3513c85869aca04c1a469ce3351e81bb54ea0fde5c80396566

SHA512
19bf0214112ce18c9f804d386a9d306b5e77479cb863dfd9eb90ce16ab7eab9dd2aa490e82b99df81ddcde41525eff5c4997c912ea0d85db589c2121e3db0718

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
a83a9ca1d2c7ab15a9a8ba567ace3fec

SHA1
644c0438c82678c2407717fdf3cdd2ab5ebea510

SHA256
aa43919fdf9f8ac174e3f923abc76dbecf63fa1ae8bb79259cae50c8939b157e

SHA512
4b1f5f73c1e5f9cdc60cd6aea669a240a1a0f8f3f0cdd0c7b68a797204b7ba20eee68977efe4f464a8cf61081e6fcd3b2cdebdaa650ec0f7bb40e2c1e1c47052

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

Filesize
344B

MD5
0ef765858838d2f2dfbd2148c767fcaa

SHA1
4839893855d43706411b217eb859498ce48637c3

SHA256
8d9ccb4fb4ad03c50d266b0d2fc0fd0b791ca49269514517d3f674449883286a

SHA512
a5d6ea9711807c92439ebea9d929304617e7d1288e8e6a7ae83903d6e7b9d936d48bbed3eff1d558615898b5402a86417956082b779b521b6073d5d47719826b

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

Filesize
392B

MD5
62cfde06fd56dcd8493f8c71a39e192d

SHA1
50c6eaef93a43b37bb3608d68fce040bccae6328

SHA256
e34e111d1664e76fe4c6f6a5bad26dd80bfb458a441aac57237d2c6a57bf5c1d

SHA512
f5c354054980498b865bdd672b494e5cd589bf7d446ea7b2906c2a85770c36620f27bc2a5cb2d1da104bf2a98dcb20ee17071a4521541f6f0350917b61ef37a1

Download Submit
C:\Users\Admin\AppData\Local\685f0fc3-bb53-4383-8161-49e66c5d9122\faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836.exe

Filesize
732KB

MD5
277e4dc53b27fce67e66b8a6f9a69810

SHA1
18ba686aba18aabffeac1d85ac87a9f2ce2a27c4

SHA256
faa324d8d1b214019212109d12826d06374d72b5f24b56a752f480286701b836

SHA512
24a767bb2adc06ef2b360a78d2aa430c02b811a455f5b28d48411166097d8802338c09aecc8c2c9033919039355fcbfe9f8a5aa9d403c44eacbc43f3c51a2cfd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab45B7.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
memory/1744-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1744-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1744-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1744-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1744-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2040-6-0x0000000002040000-0x000000000215B000-memory.dmp

Filesize
1.1MB

Download
memory/2040-0-0x0000000000810000-0x00000000008A2000-memory.dmp

Filesize
584KB

Download
memory/2040-4-0x0000000000810000-0x00000000008A2000-memory.dmp

Filesize
584KB

Download
memory/2444-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-34-0x0000000000810000-0x000000000092B000-memory.dmp

Filesize
1.1MB

Download
memory/2620-33-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/2620-29-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2620-54-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download