djvu | 4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0

General

Target

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
Size

797KB
MD5

0074b8bc6cced95d99bc9098abcef625
SHA1

21880dfb0aceebc7ddfa7b8056343f3006ff39d2
SHA256

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0
SHA512

38e7f0e1a1084ff3a28025c3ff36dcd09acaba48df53d66fcec647bfd95871ee19434d59f65c2e19bd8b27a0a66f2139981f5eb3c7f013044eca98af86404b3c
SSDEEP

12288:owgiCMEEeumDQQ92wfGw5N6qIao9wnrEYH0pLl9anzo3lARfCeDIxU:hChumkwff6p9EIs6SoVA48I

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/828-2-0x0000000003DF0000-0x0000000003F0B000-memory.dmp	family_djvu
behavioral2/memory/4736-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4736-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4736-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4736-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4736-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3744-37-0x0000000000400000-0x0000000000537000-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

3552 icacls.exe

pid	process
3552	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e4de67eb-6649-43ff-b15b-4ad825182bdf\\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe\" --AutoStart"	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.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
10 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

description	pid	process	target process
PID 828 set thread context of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 set thread context of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.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:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

pid	process
4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
3744	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
3744	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:828

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4736

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e4de67eb-6649-43ff-b15b-4ad825182bdf" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3552

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4660

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3744

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

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Downloads

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

MD5
9e130b50184e39e32205c9dd3befee15

SHA1
150b8bfb3208d3a854996e02c1470d81530335b5

SHA256
7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50

SHA512
3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f

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
a97546b4bd1ae3cdb0a91bbe6bddeb86

SHA1
b6fe23ee8c715d88a66468ee3ee1166dc1cc03f2

SHA256
e85741a95c49cbf578cb28f82d8c560e96292396cbeef1adc1c1e624940c7a7a

SHA512
948a13f5574017f6b3a29489ac07c2b8067309b6eef4da91e8ed548bc698fe695c2d64031179ebd273b35a853097b07dd08627a76f47c7a0809fed419d926c97

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

MD5
308b1f14115b981b1f832c32f6d2928b

SHA1
831e862a89149ab48619cb3f4928bf4ae0844d47

SHA256
62354aa2c66de4e5bddb29d2ed182455acc47b9cbc46c7b77e0d1bb287acee0e

SHA512
053252d388f7a6cdeeaee66d3feebc9ab2f5d7af777fe43a578d034ddd724bb345ee092e0a95ef438790cc190db1061c88d0896382403a9cdc11b836a266d7fb

Download Submit
C:\Users\Admin\AppData\Local\e4de67eb-6649-43ff-b15b-4ad825182bdf\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
Filesize
797KB

MD5
0074b8bc6cced95d99bc9098abcef625

SHA1
21880dfb0aceebc7ddfa7b8056343f3006ff39d2

SHA256
4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0

SHA512
38e7f0e1a1084ff3a28025c3ff36dcd09acaba48df53d66fcec647bfd95871ee19434d59f65c2e19bd8b27a0a66f2139981f5eb3c7f013044eca98af86404b3c

Download Submit
memory/828-2-0x0000000003DF0000-0x0000000003F0B000-memory.dmp

Filesize
1.1MB

Download
memory/828-1-0x00000000021F0000-0x0000000002284000-memory.dmp

Filesize
592KB

Download
memory/3744-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3744-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4736-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4736-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4736-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4736-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4736-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 828 wrote to memory of 4736	828	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4736 wrote to memory of 3552	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 4736 wrote to memory of 3552	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 4736 wrote to memory of 3552	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 4736 wrote to memory of 4660	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4736 wrote to memory of 4660	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4736 wrote to memory of 4660	4736	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4660 wrote to memory of 3744	4660	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads