djvu | 3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 12:30

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General

Target

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
Size

973KB
MD5

b294d6cd51dd00e84692acf53328a7de
SHA1

83a78d7c00addc083fa77fd1c0804f2a8fd6ff1e
SHA256

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d
SHA512

13688621b1b2597bec74726ee2a781d20e7adaa3413493a8bf4cf3afd1932f4b812dd1c4b636c7eacf6c6ce2350d3eded530072b0525e00f6295857382b23384
SSDEEP

24576:fYn2Mu8DzvLjj/tTQIs/kMHJY0krrfEgcjPs2RfCGZoGg/:GO8XjjhTQl8aYtrcgcjPs2obG

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vaze
offline_id
BUcuB8PRg0LNi380axIJs5BS8nCUdeo9U88L2Lt1
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-tnzomMj6HU 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: 0714JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4596-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4596-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4596-14-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-12-0x0000000002850000-0x000000000296B000-memory.dmp	family_djvu
behavioral2/memory/4596-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4596-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1020-62-0x0000000000400000-0x0000000000537000-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

Processes:

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

744 icacls.exe

pid	process
744	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\417dfdc2-5976-4c98-86da-48a7586c5e87\\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe\" --AutoStart"	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.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.

Processes:

flow ioc

2 api.2ip.ua
3 api.2ip.ua
18 api.2ip.ua

flow	ioc
2	api.2ip.ua
3	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

description	pid	process	target process
PID 1604 set thread context of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 set thread context of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

pid	process
4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
1020	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
1020	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
"C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1604

C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
"C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4596

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\417dfdc2-5976-4c98-86da-48a7586c5e87" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:744

C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
"C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1176

C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
"C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1020

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
66d1f71702c1ef556dedf6366558c482

SHA1
1351a8d97e101fd17381d7d0dc232af4b08b86c0

SHA256
f001a03aa71c553fe7bb4e9fe8e42d495ae726c657d8542ff8f1a6041c1be8f4

SHA512
ba6909f4997d6ad9211a5d660c2c4ef2a0cf5560f49f0b21c353ee4e400ec06f625640a46ac1300944d53dd2c025f9c10467013a15857d9f7946c5206b7cc672

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
63ffd34500d9b172fd7e231e938ac6e2

SHA1
1e9c3242b923af0247b53f2088606ee3cddc28eb

SHA256
3030ee18b546a2d86fb8712aa213d4fe32729f8deb0a091023a0cbb65c4ffb31

SHA512
f4a79c2094f32614e0f966c9f203adb79a500ffeb4f041eb47d5c72513106f5fa210fe3491f301215d39507283b55dd252ce93f3a34760094394ca1c6dacdaf6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
b044f3e465ccdd608fdfced8c6471148

SHA1
5b6452c4d50e9ab581826829ac8391f652a0cf5d

SHA256
70e74d0d22be04ae9acce532df09937805ce323279136b89d9bef822f2f2084a

SHA512
0a884e40321622ab0c66f7da39ba0a82c1fd418e12a5013da9e4314dc006ffadf4dd364dd0e622ceab9bf94bc047bcb2d39e442cf386a051d993cac5113841c9

Download Submit
C:\Users\Admin\AppData\Local\417dfdc2-5976-4c98-86da-48a7586c5e87\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
Filesize
973KB

MD5
b294d6cd51dd00e84692acf53328a7de

SHA1
83a78d7c00addc083fa77fd1c0804f2a8fd6ff1e

SHA256
3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d

SHA512
13688621b1b2597bec74726ee2a781d20e7adaa3413493a8bf4cf3afd1932f4b812dd1c4b636c7eacf6c6ce2350d3eded530072b0525e00f6295857382b23384

Download Submit
memory/1020-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1020-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1176-35-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-31-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/1176-34-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-30-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-29-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-28-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-33-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1176-39-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1604-1-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1604-5-0x0000000000AA0000-0x0000000000ADC000-memory.dmp

Filesize
240KB

Download
memory/1604-4-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1604-2-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/1604-8-0x0000000000401000-0x00000000004A6000-memory.dmp

Filesize
660KB

Download
memory/1604-11-0x0000000002442000-0x00000000024D3000-memory.dmp

Filesize
580KB

Download
memory/1604-12-0x0000000002850000-0x000000000296B000-memory.dmp

Filesize
1.1MB

Download
memory/1604-13-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/1604-0-0x0000000000400000-0x000000000073B000-memory.dmp

Filesize
3.2MB

Download
memory/4596-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4596-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4596-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4596-14-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4596-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1604 wrote to memory of 4596	1604	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 4596 wrote to memory of 744	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	icacls.exe
PID 4596 wrote to memory of 744	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	icacls.exe
PID 4596 wrote to memory of 744	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	icacls.exe
PID 4596 wrote to memory of 1176	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 4596 wrote to memory of 1176	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 4596 wrote to memory of 1176	4596	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
PID 1176 wrote to memory of 1020	1176	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe	3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe