djvu | f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446

General

Target

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
Size

731KB
MD5

64e022dce3e1c1412f4781031be231bb
SHA1

df2f2d3075fd5053a555afdcaf9357be4ea6e340
SHA256

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446
SHA512

f7d305be5154e5b5fef83be9d1d8e18fbee0f9e8760015b7558202c63daa6c76f4076b87b226e1654c8822f29954980208856d356daf199a623a1f24eaec66ed
SSDEEP

12288:SiR6GXGnatomI9m2ofp7r/K4h6PHfEVyBJbX5IsXuELtL9PKNsl3KqOU5ajqz8e9:SiZtomI9mZfx7K4gPHsEB/Iou6J3KqO2

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/1856-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp	family_djvu
behavioral2/memory/1804-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1804-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1804-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1804-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1804-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/8-37-0x0000000000400000-0x0000000000537000-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

1384 icacls.exe

pid	process
1384	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ea9dd9af-335d-4105-b668-fbf41c92851d\\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe\" --AutoStart"	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.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:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

description	pid	process	target process
PID 1856 set thread context of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 set thread context of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.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:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

pid	process
1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
8	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
8	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1804

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\ea9dd9af-335d-4105-b668-fbf41c92851d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1384

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1540

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:8

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
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
644db07bb58c91bd75d4cfb8751daf2e

SHA1
9b48a2823acd4daf2083d61815f89119553e6264

SHA256
f0ff269780e0d8c78b8a2dc70a7aaee3f21996e251a0fed9dc5be765d5add45a

SHA512
185225f0e5ddf5400e211d6950b96e1c025e491a64c24d614a0c344dbb03ea0abe89be2bff2dccef00737d8f9523988e5fe7ce9ae4be657886d36b98c4daf911

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

MD5
4d075d7bd51303569ad0b26c9bf1ce9a

SHA1
d127b1e29f4f02f63f92433d4f7993104821fafc

SHA256
d7dbf7feed17d8495fabc7b64a32bce99c6cf5972723a3f7b7c9d5540ae46ad3

SHA512
e9f9339f4b18f2a238544c3c9c0ded83f341245e3db31745b380b3a19aff1202eaa4ffa70ae7cdd0d10a6bb8944be75259fa2cc65ec34f045d571af8bf08d886

Download Submit
C:\Users\Admin\AppData\Local\ea9dd9af-335d-4105-b668-fbf41c92851d\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
Filesize
731KB

MD5
64e022dce3e1c1412f4781031be231bb

SHA1
df2f2d3075fd5053a555afdcaf9357be4ea6e340

SHA256
f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446

SHA512
f7d305be5154e5b5fef83be9d1d8e18fbee0f9e8760015b7558202c63daa6c76f4076b87b226e1654c8822f29954980208856d356daf199a623a1f24eaec66ed

Download Submit
memory/8-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/8-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp

Filesize
1.1MB

Download
memory/1856-1-0x0000000004A30000-0x0000000004ACE000-memory.dmp

Filesize
632KB

Download

description	pid	process	target process
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1856 wrote to memory of 1804	1856	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1804 wrote to memory of 1384	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 1804 wrote to memory of 1384	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 1804 wrote to memory of 1384	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 1804 wrote to memory of 1540	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1804 wrote to memory of 1540	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1804 wrote to memory of 1540	1804	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 1540 wrote to memory of 8	1540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads