djvu | 128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823

General

Target

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
Size

764KB
MD5

c633e766daac36206adbffc499b03a2d
SHA1

34f34526455fcc20eea7306c3e99e16647c553a4
SHA256

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823
SHA512

076220513aa90b287b0cf3675f77b0661082a8d63a6fe79a169052f74c825fa773d08e276cd7889deccf0761ef2621dc06b5cc1362f3233db0c4ff86ec19c176
SSDEEP

12288:aM7M9bs1ZZttGz2uyxQNgvw4QA4kjVQhThMAbCfaPSFmJLK72GL:cshz0yro7A5AFsTCW7L

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4592-2-0x0000000006030000-0x000000000614B000-memory.dmp	family_djvu
behavioral2/memory/912-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/912-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/912-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/912-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/912-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-37-0x0000000000400000-0x0000000000537000-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

328 icacls.exe

pid	process
328	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7020f0d9-3d98-4373-bfe0-79debba1bd80\\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe\" --AutoStart"	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.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
19 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

description	pid	process	target process
PID 4592 set thread context of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 set thread context of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.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:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

pid	process
912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
3208	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
3208	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4592

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7020f0d9-3d98-4373-bfe0-79debba1bd80" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:328

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4928

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3208

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

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Downloads

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

MD5
b976722e6aa4d29d0c420c7b71ee206a

SHA1
fa154a81a9adcff6ae004eb5a020eeab7bf1e6a0

SHA256
fe8079d0a697efbc9cd448968ec09f9a24aa17646114be475c4864d04b57c808

SHA512
b73be5f9fa8747c50c8bc736a3608d2a0393ce49f11fe0cb39c894d4f87455d55bcd0dd100f81d0ac8830fa72a98fbb15914115716d783a422600e576ab672ff

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
bc7321ef26cb090bcc51098114d23013

SHA1
1c7f8737e1cf9aaddfed4311eeb4a4940838b85a

SHA256
bbed90597169c2d26d3e714ce01532f2d298f48db32467764f9b148b2f6589d5

SHA512
33c0ee3e4c3dc20e510612eb64592e19393c23f335b734376b24bbde51fe77d9d38b47528faec6f006cccf08c15c996dfe4f05f504b87d938ec883d3d665bb60

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

MD5
e21c0f580753bba6aac2d230dea6a2aa

SHA1
61c448548b51d00f57c18fc32bcbd44c4d87c3ca

SHA256
8bb3a7ab84eddcaf0f0a40c16d8ece61dcd7b4117d4572d7a2c3f828bc2bcc3f

SHA512
799039b2520e51bf423f714c174599122e2701f73765e74aab74dbd7f45de4bb171d86d74b0fcf6f21f0765c6d5d9c8b6a7ea4488e41e5b6f3b7d2856c0021c5

Download Submit
C:\Users\Admin\AppData\Local\7020f0d9-3d98-4373-bfe0-79debba1bd80\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
Filesize
764KB

MD5
c633e766daac36206adbffc499b03a2d

SHA1
34f34526455fcc20eea7306c3e99e16647c553a4

SHA256
128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823

SHA512
076220513aa90b287b0cf3675f77b0661082a8d63a6fe79a169052f74c825fa773d08e276cd7889deccf0761ef2621dc06b5cc1362f3233db0c4ff86ec19c176

Download Submit
memory/912-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/912-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/912-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/912-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/912-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4592-2-0x0000000006030000-0x000000000614B000-memory.dmp

Filesize
1.1MB

Download
memory/4592-1-0x00000000047F0000-0x0000000004886000-memory.dmp

Filesize
600KB

Download
memory/4928-18-0x00000000044D0000-0x0000000004568000-memory.dmp

Filesize
608KB

Download

description	pid	process	target process
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4592 wrote to memory of 912	4592	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 912 wrote to memory of 328	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 912 wrote to memory of 328	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 912 wrote to memory of 328	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 912 wrote to memory of 4928	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 912 wrote to memory of 4928	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 912 wrote to memory of 4928	912	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4928 wrote to memory of 3208	4928	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads