djvu | 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673

General

Target

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Size

710KB
MD5

2fa6ec658c61947f197c939f130bac1d
SHA1

363abe0b0187e0463b32178057ddbc14e3853846
SHA256

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673
SHA512

8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce
SSDEEP

12288:pVO8OUTlNJ8ZOBmwmk6u3t4CYDRZ4uhPatmHw0NMD5LZOY6RsQV:pVOJqxmk6u3t4CYD74htSNM1Ll6

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 13 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2176-6-0x0000000002D10000-0x0000000002E2B000-memory.dmp	family_djvu
behavioral1/memory/2472-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-55-0x0000000000400000-0x0000000000537000-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

2628 icacls.exe

pid	process
2628	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\54fd22bc-1a8d-4954-85f8-d9c0a37b8996\\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe\" --AutoStart"	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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

3 api.2ip.ua
4 api.2ip.ua
9 api.2ip.ua

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

description	pid	process	target process
PID 2176 set thread context of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 set thread context of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

pid	process
2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
2536	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2176

C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2472

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\54fd22bc-1a8d-4954-85f8-d9c0a37b8996" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2628

C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2508

C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2536

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
6728aea2631b86a76c237508d8ba9b55

SHA1
7a670f95cac088313f7558869162fe01c6dc0ec9

SHA256
e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

SHA512
533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

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
866ee5a41863b4f4e4669c706939e5cc

SHA1
6d6670b1d3b57d6ea43bad28129da25bb3631961

SHA256
6e3270da4414f622e53dfc2a185a78697c2edb1812fb334c697dc1eddd4c782b

SHA512
a9afa70e3c230b6202c5a29de83645c4daa10b692ed97184ae4846a3ed4a68002d08123a457480f022668d2be8fb23a1b74cc7f9b14dbbdc35caaf33d531a78a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
344B

MD5
275115e25c485f44100b7ae975466e47

SHA1
d6eb5dbc63473d362931b5c08574f7ec39344396

SHA256
bfbe58ee0b8c02c86b0b35a84a9e4164b6334e8d15a02ec6b5c32e3e3cc45e9e

SHA512
9585a6656c2a538567344a1cabbdd5054f0cafbc133418a49188a2157849866b8088b4073c4b0542640b9bbe2db09406ad8ece52c446906bf8f098a0dd843baa

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

MD5
5ecf563b3cd4f3fefc8227181b34d769

SHA1
a8b8a484ddd51de63d153f574db64716c390183a

SHA256
f2597d3211724c7b962ab4b3db613186c1084c038f0b8fd0937da60b3302321f

SHA512
6bc672ed61ca794cb7877930500d708b3f90395a3d18011842bec396167d7fff00a707c092afeeedb92d3f0258f8a3b76662dbaf40daf4f7056ea42833595d1e

Download Submit
C:\Users\Admin\AppData\Local\54fd22bc-1a8d-4954-85f8-d9c0a37b8996\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Filesize
710KB

MD5
2fa6ec658c61947f197c939f130bac1d

SHA1
363abe0b0187e0463b32178057ddbc14e3853846

SHA256
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673

SHA512
8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3582.tmp
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
memory/2176-49-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2176-6-0x0000000002D10000-0x0000000002E2B000-memory.dmp

Filesize
1.1MB

Download
memory/2176-5-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2176-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2472-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2472-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2508-29-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2536-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2176 wrote to memory of 2472	2176	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2472 wrote to memory of 2628	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	icacls.exe
PID 2472 wrote to memory of 2628	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	icacls.exe
PID 2472 wrote to memory of 2628	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	icacls.exe
PID 2472 wrote to memory of 2628	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	icacls.exe
PID 2472 wrote to memory of 2508	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2472 wrote to memory of 2508	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2472 wrote to memory of 2508	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2472 wrote to memory of 2508	2472	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
PID 2508 wrote to memory of 2536	2508	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe	71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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