djvu | e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54

General

Target

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
Size

730KB
MD5

4858e6b3b3bbccbfea0105b3644f4acd
SHA1

efd8afa3ff89590c662f6ebc1689397a142c1a4e
SHA256

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54
SHA512

7e655b980e5e9a33e4b3e48fbe9e7b491f71783d204b81473caff8ed00c449ed1f020eabd710663db7bec3ead9533fbaaf6b78fbc7eb0e7c385c55352c03c59a
SSDEEP

12288:kUh/e8Co0hOeLh+gd8ZqKvR+DgXBP66vM/xN4zDbPELPBRE4eXOtU:kUgHBLLh+6kJPXWUbPejIB

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/2620-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5008-5-0x0000000004B40000-0x0000000004C5B000-memory.dmp	family_djvu
behavioral2/memory/2620-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2620-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2620-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2620-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-37-0x0000000000400000-0x0000000000537000-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

420 icacls.exe

pid	process
420	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d40cafd1-9847-4064-a74d-4ff459fa4fe0\\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe\" --AutoStart"	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.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:

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

description	pid	process	target process
PID 5008 set thread context of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 set thread context of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.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:

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

pid	process
2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
788	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
788	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exee3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5008

C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2620

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d40cafd1-9847-4064-a74d-4ff459fa4fe0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:420

C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3556

C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
"C:\Users\Admin\AppData\Local\Temp\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:788

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

Replay Monitor

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Downloads

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

MD5
6f6e3fca3096a0e7e7eb59d51f4a5350

SHA1
c978fa12d9045c593d5e7e097037ee465e09c3b2

SHA256
d27a9ba9c11dbd9c2b2bcb61a4128f457e7d15a3db20fad170588821e4003d78

SHA512
c45004cb6359a32eb55f1f2ff762ab948d79991ec890ceaf988d513ff9cd4dc0168deb2235b391b43ca8d69d960ba302fde0ed13a2b0e1dddbd63135f27cb546

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
2b4a95ce3a28ccdce55d582ef64db82d

SHA1
5269e64b4112cadb1284499c4e01556e7a244749

SHA256
e6042e1d2e67729842cc896dd2a438c1b85bfe94365165088f5891b2c30e6cc2

SHA512
68ed58016d208436d4f96acf7a85c7b9d0b21b613ac7ede9f3414ad1de416a3e867a6ab0f5a4a98d9932a72361bd98fdfeb8d2712de6ab65665408ef9e0225e3

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

MD5
70c428fc564e5ea73912a5867e2192ac

SHA1
c0b1acb57ea396c49e0897609e4bec87848f3022

SHA256
1da1803338f16ae3149286b4152e0bd1effc18098a04d02487d37b9cfa664c7c

SHA512
ed69becf2484687173d69f0803d90b04f2ecc0dc824904028b7497f7661a00b8d94e56a19187675bb91332cc624d84f9d2270956b6e06b735f25c224ac464a84

Download Submit
C:\Users\Admin\AppData\Local\d40cafd1-9847-4064-a74d-4ff459fa4fe0\e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
Filesize
730KB

MD5
4858e6b3b3bbccbfea0105b3644f4acd

SHA1
efd8afa3ff89590c662f6ebc1689397a142c1a4e

SHA256
e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54

SHA512
7e655b980e5e9a33e4b3e48fbe9e7b491f71783d204b81473caff8ed00c449ed1f020eabd710663db7bec3ead9533fbaaf6b78fbc7eb0e7c385c55352c03c59a

Download Submit
memory/788-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5008-1-0x0000000004AA0000-0x0000000004B3C000-memory.dmp

Filesize
624KB

Download
memory/5008-5-0x0000000004B40000-0x0000000004C5B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 5008 wrote to memory of 2620	5008	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 2620 wrote to memory of 420	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	icacls.exe
PID 2620 wrote to memory of 420	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	icacls.exe
PID 2620 wrote to memory of 420	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	icacls.exe
PID 2620 wrote to memory of 3556	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 2620 wrote to memory of 3556	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 2620 wrote to memory of 3556	2620	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe
PID 3556 wrote to memory of 788	3556	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe	e3ad5bc68cd909e0366e8ea5b78a704c2ec9dcc9a21a0ff5c49b2bd6a3f76d54.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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