djvu | 796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81

General

Target

796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
Size

757KB
MD5

21ee0321e7278095664ef67a2aafada4
SHA1

aff5a8e6b0116daa39eecea23b4f6fa617f82e2a
SHA256

796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81
SHA512

fd055531a12cc936d536bef8142c4fcb572dceb7cbd992174cf25d0dac5884f19e3faeae0087ef38d844503dd44f720b67632dc3618f7a9da111e535ebfa620d
SSDEEP

12288:/9vuOHW8dnh1TspMyDygoALQq0EJns728IXsAFcG3d+VVEbNHOySuUhzvz845p9W:pFndh9099oALQq5sBFAFcG3d+V6ROz3C

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/2412-2-0x0000000003A40000-0x0000000003B5B000-memory.dmp	family_djvu
behavioral2/memory/2452-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2452-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2452-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2452-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2452-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-39-0x0000000000400000-0x0000000000537000-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
1204	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\\f3342361-5a77-4281-9fc9-5254ae7a18cb\\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe\" --AutoStart"	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.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
2	api.2ip.ua
6	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2412 set thread context of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 1856 set thread context of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.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
2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
2736	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
2736	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2412 wrote to memory of 2452	2412	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	78
PID 2452 wrote to memory of 1204	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	80
PID 2452 wrote to memory of 1204	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	80
PID 2452 wrote to memory of 1204	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	80
PID 2452 wrote to memory of 1856	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	82
PID 2452 wrote to memory of 1856	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	82
PID 2452 wrote to memory of 1856	2452	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	82
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85
PID 1856 wrote to memory of 2736	1856	796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe	85

C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
"C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
  "C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f3342361-5a77-4281-9fc9-5254ae7a18cb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1204
- - C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
    "C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1856
  - - C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe
      "C:\Users\Admin\AppData\Local\Temp\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2736

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
9bf3a1941056959a5eba7360314bdcbc

SHA1
99344d4525cc7a159ab9cfd079b6dd0345df6851

SHA256
a5553e0213c248272671a9e9bd11ccff7656d1eb324f57ca50d1c2d97d166fa7

SHA512
6e210003c3b60dc929c7d825d4bae7eff3d4ace398cb8eea6e26fcfe11fa57c2d5c9fd224bff751e91a12860f96a0fc450ec07a820b8eb01b46ec855cf71a08c

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
14a495598ddf60fb74db0926f3377d49

SHA1
31a4a0b2c835eb3e265d6e0e6dd40fa63869577c

SHA256
394090b255507887e02f1248efaa499c99201b0acefbff9f48940d269b62d100

SHA512
cbd57b54626307f45c19febcad7b7b9472dd07da8fc69101e4c494c8eb7c30c996a8eacaa170eff8b25aaf9a9eae8dbd9703104256f42aff04307c63786038d5

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

Filesize
392B

MD5
bec0412a361982e587d559d9cadf764c

SHA1
5b4fbe57638cd0b13846c80a02ee5d5a91ea6a0a

SHA256
7b2e83cef19d318c044142648eb85804608ef8caadfab75ebb9ce17e4b52e675

SHA512
9721177df06f65600c216104f361a744f4061298729ddecde5544c41e0d17eabd7c3817e652e3d21a00b449ff4ca1395f659934141b139d0e9d27d10e5f84078

Download Submit
C:\Users\Admin\AppData\Local\f3342361-5a77-4281-9fc9-5254ae7a18cb\796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81.exe

Filesize
757KB

MD5
21ee0321e7278095664ef67a2aafada4

SHA1
aff5a8e6b0116daa39eecea23b4f6fa617f82e2a

SHA256
796ffef2fedcd7e83e8bd1023036d4238458803841abc3ec28773a23551a5c81

SHA512
fd055531a12cc936d536bef8142c4fcb572dceb7cbd992174cf25d0dac5884f19e3faeae0087ef38d844503dd44f720b67632dc3618f7a9da111e535ebfa620d

Download Submit
memory/1856-20-0x0000000003670000-0x0000000003703000-memory.dmp

Filesize
588KB

Download
memory/2412-1-0x0000000003900000-0x000000000399C000-memory.dmp

Filesize
624KB

Download
memory/2412-2-0x0000000003A40000-0x0000000003B5B000-memory.dmp

Filesize
1.1MB

Download
memory/2452-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2452-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2452-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2452-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2452-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads