djvu | 2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

General

Target

03cea6f6022a3a08d1ea003091a3e502.exe
Size

762KB
MD5

03cea6f6022a3a08d1ea003091a3e502
SHA1

643e34573258d1511921c8d97a5b3c26d6c70b62
SHA256

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2
SHA512

560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42
SSDEEP

12288:e2ZPFVL/YNfMNwpo4id34UcFg522Af3mhQIDBYHJD9wICzXXRXGoKU:e2tcMNqo3/c+52TvsQ0CjCdKU

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/3964-2-0x0000000005F80000-0x000000000609B000-memory.dmp	family_djvu
behavioral2/memory/2272-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2272-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2272-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2272-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2272-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4992-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	03cea6f6022a3a08d1ea003091a3e502.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3028 icacls.exe

pid	process
3028	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3bb6c997-8514-4f3a-a665-ef27e5946d95\\03cea6f6022a3a08d1ea003091a3e502.exe\" --AutoStart"	03cea6f6022a3a08d1ea003091a3e502.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

5 api.2ip.ua
6 api.2ip.ua
21 api.2ip.ua

flow	ioc
5	api.2ip.ua
6	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

description	pid	process	target process
PID 3964 set thread context of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 set thread context of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.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:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

pid	process
2272	03cea6f6022a3a08d1ea003091a3e502.exe
2272	03cea6f6022a3a08d1ea003091a3e502.exe
4992	03cea6f6022a3a08d1ea003091a3e502.exe
4992	03cea6f6022a3a08d1ea003091a3e502.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3964

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\3bb6c997-8514-4f3a-a665-ef27e5946d95" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3028

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3676

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4992

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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
f8673d7ce394d4c99c06f9bd48ec86e5

SHA1
0cd5a53f1c2aa056c3941ea3316b79fa9a42bed2

SHA256
9c9eda6a551f7e08dfecc2d7215868b1983c948d2beb4956d757e61c711c3895

SHA512
26ebdd7649d21bd7a7d2de6b4a6026d3d18700066b16210e14a359f28b167587b635029d9c388039aad461cc9b958a50029fbb7109dc10c08d50b5a835b370a5

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

MD5
c9920586d31b99f93e8652bd564c2806

SHA1
f873cda0e78f63ad4d205b797fd1c8de2b0705b4

SHA256
1e4762b08701bb5be2aef77130207efc8106f967d459b74a68b171948015d622

SHA512
6a7d80b0b96f11a70981bdcd6918611e902b61bdb74b4d00c4b9dce93cb33b2aa07fca3f4924ba808991f468194efba3bd6a4c13a699149ffefb898de02ba94c

Download Submit
C:\Users\Admin\AppData\Local\3bb6c997-8514-4f3a-a665-ef27e5946d95\03cea6f6022a3a08d1ea003091a3e502.exe
Filesize
762KB

MD5
03cea6f6022a3a08d1ea003091a3e502

SHA1
643e34573258d1511921c8d97a5b3c26d6c70b62

SHA256
2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

SHA512
560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42

Download Submit
memory/2272-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2272-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2272-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2272-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2272-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3676-20-0x0000000004450000-0x00000000044E9000-memory.dmp

Filesize
612KB

Download
memory/3964-1-0x0000000004640000-0x00000000046D3000-memory.dmp

Filesize
588KB

Download
memory/3964-2-0x0000000005F80000-0x000000000609B000-memory.dmp

Filesize
1.1MB

Download
memory/4992-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4992-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3964 wrote to memory of 2272	3964	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2272 wrote to memory of 3028	2272	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2272 wrote to memory of 3028	2272	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2272 wrote to memory of 3028	2272	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2272 wrote to memory of 3676	2272	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2272 wrote to memory of 3676	2272	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2272 wrote to memory of 3676	2272	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 3676 wrote to memory of 4992	3676	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads