djvu | dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230

Analysis

max time kernel
142s
max time network
140s
platform
windows10-1703_x64
resource
win10-20231023-en
resource tags

arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
submitted
02/11/2023, 13:37

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General

Target

dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
Size

747KB
MD5

44d58f7b290e72a1b16124b53ca0aead
SHA1

557e16a29ff96b525b0ffd82fa845b09c81f35bc
SHA256

dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230
SHA512

31cc856eb1997cac6a43f537ef2a9eb0c70ec5d8bc79af4f6bb7c8547b38f02bb534b9f96e78d68a160268efd983ce76f71b9eb10e780ba7ef5f4c3619d111d4
SSDEEP

12288:YX8XcDvwHgh+LXFCCki4mx71ZPrl7nxsX5LDD8NmVOptiDuPEnK:YHDvP+L189K7lVsXdJV6tCK

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://zexeq.com/raud/get.php

Attributes

extension
.ppvt
offline_id
phJtdHo970vyx7vwlYG00OakDR75RuJz7NXDArt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-eyUsqpKbFl 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: 0817JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/1584-2-0x0000000002660000-0x000000000277B000-memory.dmp	family_djvu
behavioral1/memory/4700-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4700-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4700-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4700-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4700-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3188-22-0x0000000002390000-0x0000000002431000-memory.dmp	family_djvu
behavioral1/memory/2612-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4244	build3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2940	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-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2bb438f5-1f94-4cd7-aaec-c07686c20060\\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe\" --AutoStart"	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1584 set thread context of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 3188 set thread context of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75

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
4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
2612	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
2612	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 1584 wrote to memory of 4700	1584	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	71
PID 4700 wrote to memory of 2940	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	72
PID 4700 wrote to memory of 2940	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	72
PID 4700 wrote to memory of 2940	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	72
PID 4700 wrote to memory of 3188	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	73
PID 4700 wrote to memory of 3188	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	73
PID 4700 wrote to memory of 3188	4700	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	73
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 3188 wrote to memory of 2612	3188	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	75
PID 2612 wrote to memory of 4244	2612	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	76
PID 2612 wrote to memory of 4244	2612	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	76
PID 2612 wrote to memory of 4244	2612	dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe	76

C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
"C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
  "C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4700
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\2bb438f5-1f94-4cd7-aaec-c07686c20060" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2940
- - C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
    "C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3188
  - - C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe
      "C:\Users\Admin\AppData\Local\Temp\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2612
    - - C:\Users\Admin\AppData\Local\14768c93-7218-4979-8937-11147987331b\build3.exe
        
        "C:\Users\Admin\AppData\Local\14768c93-7218-4979-8937-11147987331b\build3.exe"
        5⤵
        Executes dropped EXE
        
        PID:4244

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
f41f108ae81e470ad5a5bbb1f0b1df64

SHA1
2073651c051b5a736243d425f2509b6039cf5eb1

SHA256
eb99e9837f1a1f2bd316427c9933d1db82498fe5a3455e5c37103941dbd23c50

SHA512
a8cbe217a36e6f8ddb476d7923c7f155b8927858230133db4ef561b2cfc0bbfa3ee324513c07bcb6c670608c250918eca1486534d73cf56b1fa9fe7319e7d633

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
54e98f9f584153fea20a0b893b268aeb

SHA1
74dddb7e80b77250f3cffa171461087e8d56e244

SHA256
e9d8587e3c5479a470836a7e8acb45a8473889052a3dc3c874f8d82144594566

SHA512
bcc257bbd588fece690e45be8383efb4bf55109c93e982ab62f3687a4730c1af658ddeae69d2bb95aa92d3e21559089614cfc1f7f5249059bf72b070bbb6f687

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

Filesize
392B

MD5
107bef5f6fe5a5098a10a3c4ea4560cd

SHA1
eb5e53913a581dfbeb8200d5cf2df06f1910eabe

SHA256
5f59b771ba9ff24fd3e58701cc285dd67913f27f82dfee048656e1f42ebefcec

SHA512
22ab7a72f85e5698a0dd6013ec9c916575220dc5ccf10a0a1240f3f69436e7773e829b818e33dacdda3d2057b12971a83036ef8e1a2ac17ab6d48b2f26451c2f

Download Submit
C:\Users\Admin\AppData\Local\14768c93-7218-4979-8937-11147987331b\build3.exe

Filesize
299KB

MD5
41b883a061c95e9b9cb17d4ca50de770

SHA1
1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

SHA256
fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

SHA512
cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

Download Submit
C:\Users\Admin\AppData\Local\14768c93-7218-4979-8937-11147987331b\build3.exe

Filesize
299KB

MD5
41b883a061c95e9b9cb17d4ca50de770

SHA1
1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

SHA256
fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

SHA512
cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

Download Submit
C:\Users\Admin\AppData\Local\2bb438f5-1f94-4cd7-aaec-c07686c20060\dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230.exe

Filesize
747KB

MD5
44d58f7b290e72a1b16124b53ca0aead

SHA1
557e16a29ff96b525b0ffd82fa845b09c81f35bc

SHA256
dc094fd4c48cc766928588deebdb7d64f0c4b2d062ac5316c100f086036a3230

SHA512
31cc856eb1997cac6a43f537ef2a9eb0c70ec5d8bc79af4f6bb7c8547b38f02bb534b9f96e78d68a160268efd983ce76f71b9eb10e780ba7ef5f4c3619d111d4

Download Submit
memory/1584-1-0x0000000002470000-0x0000000002505000-memory.dmp

Filesize
596KB

Download
memory/1584-2-0x0000000002660000-0x000000000277B000-memory.dmp

Filesize
1.1MB

Download
memory/2612-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3188-22-0x0000000002390000-0x0000000002431000-memory.dmp

Filesize
644KB

Download
memory/4700-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4700-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4700-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4700-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4700-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download