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/224-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp	family_djvu
behavioral2/memory/3404-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3404-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3404-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3404-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3404-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/220-37-0x0000000000400000-0x0000000000537000-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:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2292 icacls.exe

pid	process
2292	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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9333d938-7267-467f-b2b2-1df56179800a\\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

12 api.2ip.ua
3 api.2ip.ua
4 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

description	pid	process	target process
PID 224 set thread context of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 set thread context of 220	2124	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
3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
220	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
220	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:224

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3404

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\9333d938-7267-467f-b2b2-1df56179800a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2292

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:2124

C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
"C:\Users\Admin\AppData\Local\Temp\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:220

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

Query Registry

1

T1012

System Information Discovery

2

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
c8350d31e172a7acce624350937f0880

SHA1
927eb793d42fbe9bb59e957d9bdbeef0879f5eff

SHA256
ff6ab5de5d44b593b30f2c92ff29589125d80ee7854230e32f5d6d85353f3a8b

SHA512
d32f7ad1602b07e68793c3c4c960ba97031dfa6a9b14a19cbf18f7f73ef41ba466dad7b2385830f709251a580b797b4c72663a21925a7a84347d869e3bb6838d

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

MD5
4a24cd58583b1b11f9d86b64b9fdb9f6

SHA1
b7bcfef8b8ac24ae089ab2aa4613224e22ac3686

SHA256
b15231d0534f623d8d2d7171357f81cd46397c63dcf8de02ac88e062a810af0d

SHA512
ec0edceb454a9bc6770f6807238b2a084c17af162254d2afd0ca7d2d966da08f59f0e7e0a581102b3614edac9ee1de430ff159caf6f371fbaee9afb3b3e35b61

Download Submit
C:\Users\Admin\AppData\Local\9333d938-7267-467f-b2b2-1df56179800a\7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
Filesize
716KB

MD5
e6bd5887b7bb4e9b95c1c9608e599d20

SHA1
56dbd174da60695cfbc8abdd1abd86317f4597e5

SHA256
7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788

SHA512
9fd5b6f6bc356c9b86564e19cfe35582b66ad1943cdf491d2a038a89a23dfa5dbfdbf19b1dd9c6aca232a77aa157efe7b978d4275a9ef32f4c767d72a47bfc8c

Download Submit
memory/220-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/220-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/224-1-0x0000000004940000-0x00000000049E1000-memory.dmp

Filesize
644KB

Download
memory/224-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp

Filesize
1.1MB

Download
memory/3404-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 224 wrote to memory of 3404	224	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3404 wrote to memory of 2292	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 3404 wrote to memory of 2292	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 3404 wrote to memory of 2292	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	icacls.exe
PID 3404 wrote to memory of 2124	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3404 wrote to memory of 2124	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 3404 wrote to memory of 2124	3404	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe
PID 2124 wrote to memory of 220	2124	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe	7f24053718028f3dae53aac65d1bd159721d9f78e39b209407e9cb56c48aa788.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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