djvu | 86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6

General

Target

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
Size

711KB
MD5

1803415d0d0002e02718ff233a24c314
SHA1

c46f8bb5067f2deed66c7076a30ea7424088b6b0
SHA256

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6
SHA512

e5385320d5fe607a472f1825daf88a69bef9ae5a8c72c66610b08496eee3945f42378b269450b75ffa4509c0c3bd2c755bd80120def13d7378f9371b976dc5e5
SSDEEP

12288:OmfcP9o7lSbEDsof4fsHJV/CcbFb80A/qkMP8ZwIPFYL:OmEPnbEYVfncrAZxZwI+

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.vehu
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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/692-2-0x0000000004B50000-0x0000000004C6B000-memory.dmp	family_djvu
behavioral2/memory/3504-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3504-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3504-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3504-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3504-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-37-0x0000000000400000-0x0000000000537000-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

4648 icacls.exe

pid	process
4648	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\55a6d1d4-6560-4a53-83e4-851d6695dce2\\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe\" --AutoStart"	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.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:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

description	pid	process	target process
PID 692 set thread context of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 set thread context of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.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:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

pid	process
3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
3152	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
3152	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:692

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3504

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\55a6d1d4-6560-4a53-83e4-851d6695dce2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4648

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1824

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3152

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
bb51363fdd5a46c99f0a307753a46edd

SHA1
60c53b5f30818eea076a5c98eb8ac03c6d37efb5

SHA256
d04d72da87a21d41d85e0e27574611555ab849a23ece68fa6ff05f08c1080438

SHA512
14bce61ee28dad8fadbdc5064d1b62e471c707a2805d95abcf21cc52496c561def90f88d1d0d2a430dfc8e635bdb383b200fe0a14e5dddd909e466ef77e9d8a0

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

MD5
83b069d12b7d18f2bd2d0c8ae179459a

SHA1
d7b459f370c867be6a92eec6ad18403fb03caf95

SHA256
ebfde287c37ff793b9cd04a81bafcfdd904272300049c1194035ebc2a21e6107

SHA512
595b435c83f870671180faa83bebaef98379c3f26ef7593dbd1ce1af0bccca66581ab25112c790e544e50937a213b98fd3e32bdba9d465bb5c1cafa5a6f49053

Download Submit
C:\Users\Admin\AppData\Local\55a6d1d4-6560-4a53-83e4-851d6695dce2\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
Filesize
711KB

MD5
1803415d0d0002e02718ff233a24c314

SHA1
c46f8bb5067f2deed66c7076a30ea7424088b6b0

SHA256
86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6

SHA512
e5385320d5fe607a472f1825daf88a69bef9ae5a8c72c66610b08496eee3945f42378b269450b75ffa4509c0c3bd2c755bd80120def13d7378f9371b976dc5e5

Download Submit
memory/692-2-0x0000000004B50000-0x0000000004C6B000-memory.dmp

Filesize
1.1MB

Download
memory/692-1-0x0000000004AB0000-0x0000000004B50000-memory.dmp

Filesize
640KB

Download
memory/3152-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 692 wrote to memory of 3504	692	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 3504 wrote to memory of 4648	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 3504 wrote to memory of 4648	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 3504 wrote to memory of 4648	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 3504 wrote to memory of 1824	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 3504 wrote to memory of 1824	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 3504 wrote to memory of 1824	3504	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1824 wrote to memory of 3152	1824	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads