djvu | 7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788

General

Target

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
Size

716KB
MD5

e6bd5887b7bb4e9b95c1c9608e599d20
SHA1

56dbd174da60695cfbc8abdd1abd86317f4597e5
SHA256

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788
SHA512

9fd5b6f6bc356c9b86564e19cfe35582b66ad1943cdf491d2a038a89a23dfa5dbfdbf19b1dd9c6aca232a77aa157efe7b978d4275a9ef32f4c767d72a47bfc8c
SSDEEP

12288:BHMbEmBJSKhk21XR2V4D4qTDYTquwRUExooref0Mp+uE3oVlFfV+2qJRSHCEsyZU:BH/QRR7iquwuU/ef0KDEYVlFfh/s

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Processes:

resource	yara_rule
behavioral1/memory/2260-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1744-2-0x0000000002D20000-0x0000000002E3B000-memory.dmp	family_djvu
behavioral1/memory/2260-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2260-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2260-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3048-55-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

2920 icacls.exe

pid	process
2920	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\20530ec9-65ed-4e10-bb35-c397766c41aa\\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe\" --AutoStart"	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.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

3 api.2ip.ua
4 api.2ip.ua
9 api.2ip.ua

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

description	pid	process	target process
PID 1744 set thread context of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 set thread context of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

pid	process
2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
3048	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2260

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\20530ec9-65ed-4e10-bb35-c397766c41aa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2920

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2876

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3048

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
7bb5a14437331aad24915a3d8546fbc1

SHA1
9a5570c07af0c0cde02858f61e1c7094f5a70f38

SHA256
42397d9f3c8164d4cef19fc169d7bcea77a3ea7e9bcb8cfa7db2ff0bbd3a7e00

SHA512
a2333a078be981eafe3f666ff3944cd3b28279a9da99f354014d81d80e98a0effabff2a8f5ab5fba61f7de9e49e2af3112dda6b28678192a1d80d2ca22004f13

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
03612675d284d3cb6b90c50b0d943eff

SHA1
9afa769c212f150230eed2f538f5a76d566d6aa8

SHA256
83283718f15d378ca7561ed1de4fe1c9392d7c4729e2f77793322f4960cc00ab

SHA512
1be03bc1f017862854b3178e7d54ef98a6723699a7602583e4176e4469fdc00cbd32e58c68953114a26e8d24629518d07c699bcce63a9df818e4026c546f5399

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
344B

MD5
f4e591700f517ed4eb0511ef584b9b2f

SHA1
dda853fbfd535063ab168ad6e2eec70ccd77d0d1

SHA256
3106a6705fb4ff66614d5abd9e32845cec647403779075f9fcf203df7a0fded5

SHA512
36a211215184400c0fc2524224ac92f06f32331d92ee8da209dfe1bbdd5c85f87103ccde62940ade831e489837327ad0ed1b49b8b27e8b7c94f9e25902c77adf

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

MD5
c8bdfe86e1c897329bb2c70112e45fe2

SHA1
130db28481b3edd456d1a573407573215b4d1888

SHA256
75e0ec948a32069caa0594c2d993e83f72fcd57728674a5708210b149f16a262

SHA512
ac61823f46b5fcbe6237f0191c009c2b82bc39a92a5a7fab1dd802b753b8bdd7effe1725865e989900fc8ba8b04fdba83c0d622e68cbf1320a50ef7ced70f561

Download Submit
C:\Users\Admin\AppData\Local\20530ec9-65ed-4e10-bb35-c397766c41aa\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
Filesize
716KB

MD5
e6bd5887b7bb4e9b95c1c9608e599d20

SHA1
56dbd174da60695cfbc8abdd1abd86317f4597e5

SHA256
7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788

SHA512
9fd5b6f6bc356c9b86564e19cfe35582b66ad1943cdf491d2a038a89a23dfa5dbfdbf19b1dd9c6aca232a77aa157efe7b978d4275a9ef32f4c767d72a47bfc8c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2636.tmp
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
memory/1744-1-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download
memory/1744-7-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download
memory/1744-2-0x0000000002D20000-0x0000000002E3B000-memory.dmp

Filesize
1.1MB

Download
memory/1744-0-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download
memory/2260-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2260-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2260-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2260-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2260-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2876-30-0x0000000004490000-0x0000000004522000-memory.dmp

Filesize
584KB

Download
memory/3048-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 1744 wrote to memory of 2260	1744	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2260 wrote to memory of 2920	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2260 wrote to memory of 2920	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2260 wrote to memory of 2920	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2260 wrote to memory of 2920	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2260 wrote to memory of 2876	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2260 wrote to memory of 2876	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2260 wrote to memory of 2876	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2260 wrote to memory of 2876	2260	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2876 wrote to memory of 3048	2876	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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