djvu | 920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3

General

Target

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
Size

760KB
MD5

c8cd31346ce6c7c8b1844bd31726f274
SHA1

a584ac4c76a2108aaaae7f497442f68f8e359e28
SHA256

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3
SHA512

eb2742f34d32b0bb9ace5c7c11d48eb04f39edc4b31d05c3d0cb6abdeb3be6699ddc284c260fa32590447eb6ef184c3002a7b00001c34a6e266b641cbcca74df
SSDEEP

12288:7SdW+GeGf715SAo0bijKDhd93d/XyLwmbEvk924E9Nz8R/1mEgh8nSr:7By10qKlv3d/04vU24kQR/ndnSr

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/4572-2-0x0000000005FA0000-0x00000000060BB000-memory.dmp	family_djvu
behavioral2/memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3912-39-0x0000000000400000-0x0000000000537000-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

1052 icacls.exe

pid	process
1052	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\46f85171-51cd-491e-945d-b52e52572a3f\\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe\" --AutoStart"	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.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:

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

description	pid	process	target process
PID 4572 set thread context of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 set thread context of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.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:

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

pid	process
3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
3912	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
3912	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
"C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4572

C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
"C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3300

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\46f85171-51cd-491e-945d-b52e52572a3f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1052

C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
"C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3008

C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
"C:\Users\Admin\AppData\Local\Temp\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3912

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
26f403621df973e369b7b13c6aba9ccb

SHA1
ca3e85e908d9532f384c0560797f4e379bd4a0a0

SHA256
0e9d6e111822d17e4c57df845d4fdacc5477adec069db8eecd3be0d11fc84533

SHA512
d5bfab31e8c913cd97b83d92c56e58a3c225975537006b42124cb1cf4e813c635c30d6aa5010ecec54c1e8fa9eeb44c93f2b955216e7509dd79f1e074e340225

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
d01ab4d2fab70b01704a24ee106a4674

SHA1
2b150a59872a8a4e53f9c71f82e918f90677dcd1

SHA256
17dc9a2299ee29e1b401b85e2db8b7d9727c8e301781524d9c441dc170db11d4

SHA512
6b703894be171d899f2b0cf78e4d86ec638fb3b989b34b2ddab736e236562d7be6291427732e5bae7510a0f53230bb21e668bcd1dcaecc146324c568912f40a1

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

Filesize
392B

MD5
3fa0bd9880e699bad4940b40ea67fca9

SHA1
900c68d22b77955cbe490345ea65f301d1bea04e

SHA256
917657de8058943207ad2409aa37ec52e32a9b9b1dd3ac1f9c35317009dea7f2

SHA512
c17bf96c70b2d06b04f9e232d7879e0718f1b36e2e33d6b18a2a6bf1dc1781219673d56d65a643677a6ba53b9eae24140406c926675a001c8b16dafe2b651ba3

Download Submit
C:\Users\Admin\AppData\Local\46f85171-51cd-491e-945d-b52e52572a3f\920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

Filesize
760KB

MD5
c8cd31346ce6c7c8b1844bd31726f274

SHA1
a584ac4c76a2108aaaae7f497442f68f8e359e28

SHA256
920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3

SHA512
eb2742f34d32b0bb9ace5c7c11d48eb04f39edc4b31d05c3d0cb6abdeb3be6699ddc284c260fa32590447eb6ef184c3002a7b00001c34a6e266b641cbcca74df

Download Submit
memory/3008-20-0x00000000043F0000-0x0000000004488000-memory.dmp

Filesize
608KB

Download
memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4572-1-0x00000000043E0000-0x0000000004477000-memory.dmp

Filesize
604KB

Download
memory/4572-2-0x0000000005FA0000-0x00000000060BB000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 4572 wrote to memory of 3300	4572	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3300 wrote to memory of 1052	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	icacls.exe
PID 3300 wrote to memory of 1052	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	icacls.exe
PID 3300 wrote to memory of 1052	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	icacls.exe
PID 3300 wrote to memory of 3008	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3300 wrote to memory of 3008	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3300 wrote to memory of 3008	3300	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe
PID 3008 wrote to memory of 3912	3008	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe	920a12d7570581e2946624fed9366b647f92e9a61363f5d151e221a4d4193df3.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads