djvu | 0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb

General

Target

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
Size

711KB
MD5

2fe74589699ad8b98b23c473414a5c6a
SHA1

84b1ab6c53ce76ca7c8710a3fc943f12c260adaa
SHA256

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb
SHA512

2a473345343ee3869687cdde79921f9c6c9300d65e14056ad63788dd2459883c65ada384d15f6cc66ff09763ac52703314efba8175acba90ba0f8623be5350b5
SSDEEP

12288:Q972r9a2oBGCKmQltAg2toQoB4YfxKogqv5MuY:Q9KrDmQDAghxKov5Z

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/1788-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/3020-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3020-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3020-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3020-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3020-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3392-37-0x0000000000400000-0x0000000000537000-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

2888 icacls.exe

pid	process
2888	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f131942c-7c59-4152-bc4c-ff8a9235187b\\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe\" --AutoStart"	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.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
8 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

description	pid	process	target process
PID 1788 set thread context of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 set thread context of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.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:

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

pid	process
3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
3392	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
3392	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
"C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1788

C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
"C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3020

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f131942c-7c59-4152-bc4c-ff8a9235187b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2888

C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
"C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848

C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
"C:\Users\Admin\AppData\Local\Temp\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3392

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
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
21190b226eea4531c925900d8ca8de01

SHA1
858e19bbd2c4a82a2f741d54f7702ef13f412133

SHA256
0939c502dc7989a054ccc4828af7696111edbf6ac3092aef7c9b576a87ff53b2

SHA512
ce500f3a31abf920ceba0b6a61dd05af145c43f2e05389a454b9f6ffdabd944a5bc8ec7cb2a8605349e131da23e6b69df7e93f7b1d9102f0fab7d6cee01ba6c0

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

MD5
97b34eb802f6843c1079951f1b537f66

SHA1
f169349c0bf5b70e7e54f3a3b12543b81898d935

SHA256
59bc81143d8b4cd785b6324c19bec4dffcebd4706a61b83dc63ac7e96b2a10d3

SHA512
fbf393eb25d63e32a73f42222e4057a45fb304339e0d47600b0fa1c8a43c11e6294f5e89563930d60b8a8e4b77a6e9e03f84c525e50a07fa72935fde4ae06d75

Download Submit
C:\Users\Admin\AppData\Local\f131942c-7c59-4152-bc4c-ff8a9235187b\0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
Filesize
711KB

MD5
2fe74589699ad8b98b23c473414a5c6a

SHA1
84b1ab6c53ce76ca7c8710a3fc943f12c260adaa

SHA256
0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb

SHA512
2a473345343ee3869687cdde79921f9c6c9300d65e14056ad63788dd2459883c65ada384d15f6cc66ff09763ac52703314efba8175acba90ba0f8623be5350b5

Download Submit
memory/1788-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/1788-1-0x0000000004A10000-0x0000000004AB1000-memory.dmp

Filesize
644KB

Download
memory/3020-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3020-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3020-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3020-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3020-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3392-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 1788 wrote to memory of 3020	1788	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 3020 wrote to memory of 2888	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	icacls.exe
PID 3020 wrote to memory of 2888	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	icacls.exe
PID 3020 wrote to memory of 2888	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	icacls.exe
PID 3020 wrote to memory of 848	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 3020 wrote to memory of 848	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 3020 wrote to memory of 848	3020	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe
PID 848 wrote to memory of 3392	848	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe	0f5bae947e7f1d88edbea521ebd44f9712a4cd63176b79258816d4135fae48fb.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads