djvu | 5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d

General

Target

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
Size

731KB
MD5

46d7ebc443e1300bed0ab451d92864cb
SHA1

b81b7257e588ae9e997c1d5def4b4ef31208a663
SHA256

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d
SHA512

ca39e4f338a9cc6c33f829c56dc4432a782fd323cb4e1033ca4a3688ab8f6ea35b12eeaecfaa2f483a18958e66ad3892dba1c0b6437045077f261ca98695220f
SSDEEP

12288:69eVBazjFCnFhFIMta6djZYgQQM37HibANjybbKKMm/ZrS4uqCOs5/Sh/:6e6jFC1IMt6V32At8Bl/Zr/Be5aV

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/4644-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp	family_djvu
behavioral2/memory/3592-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1080-37-0x0000000000400000-0x0000000000537000-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

3384 icacls.exe

pid	process
3384	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a4cb2cad-0a5b-40a3-9506-2b98287507ad\\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe\" --AutoStart"	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.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
6 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

description	pid	process	target process
PID 4644 set thread context of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 set thread context of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.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:

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

pid	process
3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
1080	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
1080	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
"C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4644

C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
"C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3592

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\a4cb2cad-0a5b-40a3-9506-2b98287507ad" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3384

C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
"C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3968

C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
"C:\Users\Admin\AppData\Local\Temp\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1080

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

Loading Replay Monitor...

Downloads

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

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
c373f7848fd644634085b7b9bb5fed2a

SHA1
025f565f846b2747415b43f81d5575300472d555

SHA256
7e331af0d7a550a8215676c4451af984fc7f622e935a39af32164c750bf918d8

SHA512
b5a0cc38761dd17535ff4247e8862001d226b427345608406d0aa9d0237de21b5cecc9eebb1538d2fe275009c23777c2cf7120f9cefbeafa02002b1d49038562

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

MD5
9d0a9578d7e304a4f126b76ce07e95dd

SHA1
bb17e41553ee50b66a7075c3d53b576a6d17eb6d

SHA256
9a1c6d63ad7fa3cf992d42709ca86ae432a48ab563c13e47fd5f3538181dad4e

SHA512
3be57ad8421a5f6bd3e2bbcd640ed103ed84463c420c7682641f8fd8b57f122567eeb6ee852775249dc0976fcaefff414a25a4c1fd31cd1f5788030c29f4dc16

Download Submit
C:\Users\Admin\AppData\Local\a4cb2cad-0a5b-40a3-9506-2b98287507ad\5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
Filesize
731KB

MD5
46d7ebc443e1300bed0ab451d92864cb

SHA1
b81b7257e588ae9e997c1d5def4b4ef31208a663

SHA256
5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d

SHA512
ca39e4f338a9cc6c33f829c56dc4432a782fd323cb4e1033ca4a3688ab8f6ea35b12eeaecfaa2f483a18958e66ad3892dba1c0b6437045077f261ca98695220f

Download Submit
memory/1080-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1080-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4644-1-0x0000000004A30000-0x0000000004ACF000-memory.dmp

Filesize
636KB

Download
memory/4644-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 4644 wrote to memory of 3592	4644	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3592 wrote to memory of 3384	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	icacls.exe
PID 3592 wrote to memory of 3384	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	icacls.exe
PID 3592 wrote to memory of 3384	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	icacls.exe
PID 3592 wrote to memory of 3968	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3592 wrote to memory of 3968	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3592 wrote to memory of 3968	3592	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe
PID 3968 wrote to memory of 1080	3968	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe	5283567bcab28b33f2cb508965f717357662214ba7278f42f7b36d3d9691b19d.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads