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 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2140-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3024-2-0x0000000004AF0000-0x0000000004C0B000-memory.dmp	family_djvu
behavioral2/memory/2140-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4172-37-0x0000000000400000-0x0000000000537000-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

2704 icacls.exe

pid	process
2704	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-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\be89328e-0183-415d-8543-e30bfd003752\\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

1 api.2ip.ua
2 api.2ip.ua
6 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

description	pid	process	target process
PID 3024 set thread context of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 set thread context of 4172	3324	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 4 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

pid	process
2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
4172	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
4172	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Suspicious use of WriteProcessMemory 26 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:3024

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:2140

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\be89328e-0183-415d-8543-e30bfd003752" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2704

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:3324

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4172

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

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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
b221feabd3f3d638d3a78ac1508b2eef

SHA1
6efb5960da1d57dbe18db6428f2e3df8dc794c94

SHA256
238e600ca1bf6ec6ad64da28f268f737e301e1d3197b2f7cd0c6c3e61428c5df

SHA512
5f4eece3cf9ec75a753541f41ded06b063dbfba6d05426094afddca2c4f848edd8c40c95feb5dc53dd1b39dc0ace40524a8813905b8d633d42094b567c228b5c

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

MD5
ef040365ff317825db9f2dd6cf1d39de

SHA1
cc8d2cc471eb7fcca2d77114ce83eda35954766f

SHA256
00fb492cfd6e7142608f2c5953497a95a1f2173c0bf8ab32cbd7d7136e2a71c9

SHA512
2d3b5ac71d1c4bdc6d3d44100242f1d5348e934a0b78ea0e17c1a82064fefae5738cae2d3a32b0a3d854db9530ce98b3bb1cd1a003c38312a50983c9105fc4b7

Download Submit
C:\Users\Admin\AppData\Local\be89328e-0183-415d-8543-e30bfd003752\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
Filesize
716KB

MD5
e6bd5887b7bb4e9b95c1c9608e599d20

SHA1
56dbd174da60695cfbc8abdd1abd86317f4597e5

SHA256
7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788

SHA512
9fd5b6f6bc356c9b86564e19cfe35582b66ad1943cdf491d2a038a89a23dfa5dbfdbf19b1dd9c6aca232a77aa157efe7b978d4275a9ef32f4c767d72a47bfc8c

Download Submit
memory/2140-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2140-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2140-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2140-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2140-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-2-0x0000000004AF0000-0x0000000004C0B000-memory.dmp

Filesize
1.1MB

Download
memory/3024-1-0x0000000004A40000-0x0000000004AE2000-memory.dmp

Filesize
648KB

Download
memory/4172-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4172-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3024 wrote to memory of 2140	3024	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2140 wrote to memory of 2704	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2140 wrote to memory of 2704	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2140 wrote to memory of 2704	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 2140 wrote to memory of 3324	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2140 wrote to memory of 3324	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2140 wrote to memory of 3324	2140	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3324 wrote to memory of 4172	3324	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads