djvu | 50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f

General

Target

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
Size

708KB
MD5

c991e828e97d9e583ff042e5891d9999
SHA1

12b6ab69ee99c0c5cb5b4f413f24e84d438b2d96
SHA256

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f
SHA512

f65fcd02981c1a4eea592486ccb6b592fe646dbac48b0104586bf06f96a65124916c9f456ac588411b2b9dc434ede958977cdf47550e957623a1e1c6960573fb
SSDEEP

12288:tnsGKEfpDplHlPCBMPmpE0NuaAidBVlB+Nze9qXX0S6CjXf23:tsxYpDp9ZCBMI/uaAOug9OfXf4

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 13 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2356-5-0x0000000003C80000-0x0000000003D9B000-memory.dmp	family_djvu
behavioral1/memory/3036-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3036-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3036-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3036-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2564-54-0x0000000000400000-0x0000000000537000-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

2860 icacls.exe

pid	process
2860	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9d9f8b87-c33b-49fa-9011-f3d1ff89aaa0\\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe\" --AutoStart"	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.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:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

description	pid	process	target process
PID 2356 set thread context of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 set thread context of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.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:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

pid	process
3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
2564	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2356

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3036

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\9d9f8b87-c33b-49fa-9011-f3d1ff89aaa0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2860

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2804

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
6728aea2631b86a76c237508d8ba9b55

SHA1
7a670f95cac088313f7558869162fe01c6dc0ec9

SHA256
e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

SHA512
533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

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
1eb6f23cb657affb71c384c111fedef4

SHA1
1c55981493ce12a6db271080c07b5d5fddeea429

SHA256
c857618c04f78f0da7ace98451aac3609bbcc373312ebefb8058343a9e3afece

SHA512
0459b4306b8bf669f4397a6b7a87b8e2b841ed15f7a866bb8ab163ed4ae8949e7fb7a79c9c2c4d7924023e59a601e953ec8808af0fc5c9144d033478ad0ef086

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

MD5
c7ab491154e8d372d56af8f0a22a0e58

SHA1
60081a61d8830d90f7e2ccfd6939e6deed1e84cf

SHA256
7d50e8a43a8b8ba13d66d7ec087a2a7b828f1859d6fb0274829e6bda531a939d

SHA512
9d374727e0371c614ca68499a3c4e5d36641a511af1088424499d486833b39c4cc7c6fc45bb4e448c606f46378d66bf1dace47e1f82bb443279bcd052f7ae10c

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

MD5
164bcb37c86f8e098c53c0208c72d38a

SHA1
c59805e5e0886830d25384c1dd0f940bb94538e4

SHA256
3a85d795b524c9229d02cc8e85eeb74f84601fd5d6fbee800633b8062f9d739c

SHA512
45f0c4915db863a475e6bd6c8a5fa725a30aa2332c9c499f8182672b1417c2939e46807568a6f7a74eae4a495ccac7fb2f1a69608980d5b72373bf16db9648f0

Download Submit
C:\Users\Admin\AppData\Local\9d9f8b87-c33b-49fa-9011-f3d1ff89aaa0\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
Filesize
708KB

MD5
c991e828e97d9e583ff042e5891d9999

SHA1
12b6ab69ee99c0c5cb5b4f413f24e84d438b2d96

SHA256
50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f

SHA512
f65fcd02981c1a4eea592486ccb6b592fe646dbac48b0104586bf06f96a65124916c9f456ac588411b2b9dc434ede958977cdf47550e957623a1e1c6960573fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab13FE.tmp
Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
memory/2356-6-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2356-5-0x0000000003C80000-0x0000000003D9B000-memory.dmp

Filesize
1.1MB

Download
memory/2356-0-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2564-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2564-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2804-29-0x00000000023D0000-0x0000000002461000-memory.dmp

Filesize
580KB

Download
memory/3036-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3036-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2356 wrote to memory of 3036	2356	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 3036 wrote to memory of 2860	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 3036 wrote to memory of 2860	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 3036 wrote to memory of 2860	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 3036 wrote to memory of 2860	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 3036 wrote to memory of 2804	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 3036 wrote to memory of 2804	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 3036 wrote to memory of 2804	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 3036 wrote to memory of 2804	3036	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2804 wrote to memory of 2564	2804	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads