djvu | 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd

General

Target

589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
Size

760KB
MD5

b15ef523248fef029925a13e734f0d6a
SHA1

d10b5c36d35a5b1f381a75c9f70e4e54e13a9adb
SHA256

589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd
SHA512

7444089d471faabc7252497eca92116ffa16a7bf863f44f24efda386f43fdab91361ddcb0f8dacf28cd697d70c08e68ebe062b68f066991f0c07e20c43c8da7a
SSDEEP

12288:VXTQb18sh8zXGklrAtTuMdp0ttYKHypYHy9EbRc0YQkQCA+taC+Y6JbOp5soSyB4:Vy8sh8zXVlrQTukIY930go+ECLp5soSH

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4884-2-0x0000000005F90000-0x00000000060AB000-memory.dmp	family_djvu
behavioral2/memory/4760-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4760-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4760-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4760-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4760-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2480-39-0x0000000000400000-0x0000000000537000-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
3524	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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4c089b8a-2ed0-4708-bf54-8a1b8deea7f9\\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe\" --AutoStart"	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.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
1	api.2ip.ua
2	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 3904 set thread context of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85

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
4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
2480	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
2480	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4884 wrote to memory of 4760	4884	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	78
PID 4760 wrote to memory of 3524	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	80
PID 4760 wrote to memory of 3524	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	80
PID 4760 wrote to memory of 3524	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	80
PID 4760 wrote to memory of 3904	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	82
PID 4760 wrote to memory of 3904	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	82
PID 4760 wrote to memory of 3904	4760	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	82
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85
PID 3904 wrote to memory of 2480	3904	589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe	85

C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
"C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
  "C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4c089b8a-2ed0-4708-bf54-8a1b8deea7f9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3524
- - C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
    "C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3904
  - - C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
      "C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2480

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

System Information Discovery

1

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
26f403621df973e369b7b13c6aba9ccb

SHA1
ca3e85e908d9532f384c0560797f4e379bd4a0a0

SHA256
0e9d6e111822d17e4c57df845d4fdacc5477adec069db8eecd3be0d11fc84533

SHA512
d5bfab31e8c913cd97b83d92c56e58a3c225975537006b42124cb1cf4e813c635c30d6aa5010ecec54c1e8fa9eeb44c93f2b955216e7509dd79f1e074e340225

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
50c055f07195b37b5e0cde7742a3e79f

SHA1
cda7cd037851075bc004f3ad6ad6008f7419a08c

SHA256
2ebfdccc1ba9d3f2fbf2055f6ab245e776b2c99d72ee4d672175ba1e64d30e5e

SHA512
63ababe2cfdc4612e115c97f47df1ea600e050baffd2c21e31cd19f206d38e3fb5c2c56edcf5cd74346756747e3783f8f53da500d25a4ad3ef7fd349a78622b3

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

Filesize
392B

MD5
de639dc9313a6992c5f7daaba479998c

SHA1
adeff986ee38ffd311845ff2f09a46216f9b3496

SHA256
142c52c4da8179a686db1aa72bbff96554ba50c876b6c73e72533fd0ecd13cb4

SHA512
99498a42ebfef850cc8670dc7d8150361871ac6b23d506349c5b3771ddb7147f0580b9004dbb9e1c857e2c82058add494ad34ced17a68ecc631fc33e31f18cbc

Download Submit
C:\Users\Admin\AppData\Local\4c089b8a-2ed0-4708-bf54-8a1b8deea7f9\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe

Filesize
760KB

MD5
b15ef523248fef029925a13e734f0d6a

SHA1
d10b5c36d35a5b1f381a75c9f70e4e54e13a9adb

SHA256
589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd

SHA512
7444089d471faabc7252497eca92116ffa16a7bf863f44f24efda386f43fdab91361ddcb0f8dacf28cd697d70c08e68ebe062b68f066991f0c07e20c43c8da7a

Download Submit
memory/2480-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3904-20-0x00000000043D0000-0x0000000004465000-memory.dmp

Filesize
596KB

Download
memory/4760-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-2-0x0000000005F90000-0x00000000060AB000-memory.dmp

Filesize
1.1MB

Download
memory/4884-1-0x00000000043C0000-0x000000000445D000-memory.dmp

Filesize
628KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads