djvu | f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3

General

Target

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
Size

710KB
MD5

fb34333020006660704924d0b9bc5c06
SHA1

a988526eba52058e862e78a8610a4d258b65d6d0
SHA256

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3
SHA512

775ab9f6e9b9623104a3f5d8abbd9a68a8e1c7a9d1a6606e7da879bd72d642df5261cabd7ed41b64726dc0d9d26ede7ca3c1b4666e17283281f132a597eaa06a
SSDEEP

12288:DTuu0fBQ5KsPyRIfwxw6fEDPzBWb+JAJNJYjxoTCKOYDiFyY5:DTH4WKxKoW6kzMbrJgxQCKdiFP5

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/1632-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/8-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-41-0x0000000000400000-0x0000000000537000-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

4780 icacls.exe

pid	process
4780	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.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\\32abbe94-a85e-4a30-aa32-c6bba2afea50\\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe\" --AutoStart"	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.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
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exef89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

description	pid	process	target process
PID 1632 set thread context of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 set thread context of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.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:

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exef89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

pid	process
8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
3296	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
3296	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exef89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exef89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
"C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
  "C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:8
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\32abbe94-a85e-4a30-aa32-c6bba2afea50" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4780
- - C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
    "C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1328
  - - C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
      "C:\Users\Admin\AppData\Local\Temp\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3296

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

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Downloads

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

Filesize
1KB

MD5
64c143e9f2a438ddf74501d3b3cc54bf

SHA1
66b41aabcaa5c364d405c858b85fa7a995f53c72

SHA256
02802fa86c2539668fb375ddf8b3ffa5a6c7ad8ae0050c3471dc9fca1275c0ca

SHA512
9decfe443630833dfc6c4e2b728c0395d0cbd59a5d868639f300244c4c61df6540b21d33497a8dd4e1947aaef02e4cbc815f53acc21d70ba1653d9492f438e96

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
238cd8b2245a96832241ab92d1a72095

SHA1
4aa1b2b3386ecf8189f39f198930178098eab53e

SHA256
d9f00402a05bc6feb0f6552b83ee8abf4de4bc3429a5c5ff6cb28efe4c905f1c

SHA512
69f0bb52c40aa1a1f1aae0f21939b3c2e36f5e40fc7815112341c81e36c2052ff4e2326ed3a082cf547e791e2d43df79c20e14be025486f13927780ed4e4f141

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

Filesize
392B

MD5
313da7d41a53b00919e134537431b8bd

SHA1
0d726f480d72eee86117a869d8b7060d2cda2eb6

SHA256
047a571e19a2413da08bcd0b0bed2d8a8c329b0aa9871c21623fe2e996a51a7e

SHA512
d46e6da6368735f4ddb11c13671bcd4f79b3e930342fda411b7640ce3d5b27b39f635f09982781e4c9166b6960352adcf70424c9557284fd92db0260fa6abff6

Download Submit
C:\Users\Admin\AppData\Local\32abbe94-a85e-4a30-aa32-c6bba2afea50\f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

Filesize
710KB

MD5
fb34333020006660704924d0b9bc5c06

SHA1
a988526eba52058e862e78a8610a4d258b65d6d0

SHA256
f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3

SHA512
775ab9f6e9b9623104a3f5d8abbd9a68a8e1c7a9d1a6606e7da879bd72d642df5261cabd7ed41b64726dc0d9d26ede7ca3c1b4666e17283281f132a597eaa06a

Download Submit
memory/8-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1632-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

Filesize
1.1MB

Download
memory/1632-1-0x0000000004A10000-0x0000000004AAD000-memory.dmp

Filesize
628KB

Download
memory/3296-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1632 wrote to memory of 8	1632	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 8 wrote to memory of 4780	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	icacls.exe
PID 8 wrote to memory of 4780	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	icacls.exe
PID 8 wrote to memory of 4780	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	icacls.exe
PID 8 wrote to memory of 1328	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 8 wrote to memory of 1328	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 8 wrote to memory of 1328	8	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe
PID 1328 wrote to memory of 3296	1328	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe	f89a0b68aaf7c0792c10cf0212e3aeb28bd292dad258c7992c3574c30aab48b3.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads