djvu | 9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec

General

Target

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
Size

733KB
MD5

3eedc2ae680453b8ca3b23fd15f529a7
SHA1

4b1cb1070c23bea1abde90a6329cbf45059e8ae4
SHA256

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec
SHA512

e9075b16347404b61df5698bb055284f94f686ed318ea6f71b93e924aa25e19b2e27f516909ee9787b6bf9925320403dff6d5825b3199edbf2f46608a4e57d9b
SSDEEP

12288:unvpi0XtAWoEn3O4WsiCIJdbUa0OWv4f5GWzH9MgInKa8fbM:unsk+4WxCIJJ6ef5PugIniTM

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
behavioral1/memory/4304-2-0x0000000004A10000-0x0000000004B2B000-memory.dmp	family_djvu
behavioral1/memory/3216-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3216-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3216-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3216-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3216-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-37-0x0000000000400000-0x0000000000537000-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:

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4236 icacls.exe

pid	process
4236	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\430a6f6d-ebfc-4177-ac1e-e8427489153d\\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe\" --AutoStart"	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.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
5 api.2ip.ua
18 api.2ip.ua

flow	ioc
3	api.2ip.ua
5	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

description	pid	process	target process
PID 4304 set thread context of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 set thread context of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.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:

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

pid	process
3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
2764	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
2764	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
"C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4304

C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
"C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3216

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\430a6f6d-ebfc-4177-ac1e-e8427489153d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4236

C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
"C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:512

C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
"C:\Users\Admin\AppData\Local\Temp\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2764

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
a50f8b72626d8a9ff6e2d23a056a2757

SHA1
0abe1234c188129a0b62e06e70b0b36a20bdae51

SHA256
0862deaa27fc77efd64faf8a596d6613b23d0a1d624c4802fc701fcb2fa9623f

SHA512
873704a6cc91d7df59100b2104d6f5db9026582888785a93d4e881dd8a838ec8288f4b5d2de5c76adb85873313cfd25bae34699ef88b1abb9af1d509a3bb8638

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

MD5
bdcb4c6c2a003ff830b03c4ea616b9ed

SHA1
017f06ead7fb4b77f6f093b1a6fb0a88d82fcd48

SHA256
fe9ff972696f2968715711098177c6cbaf6103757d482c7febc207472ae67ea4

SHA512
0e00d7d484e4df48696ddf1498cf380ca0fc4d04ecf21c8d0642902167535705d9cba625d23b41a72769a99f980bef03ba934a131eec8356a970027c05dbe76e

Download Submit
C:\Users\Admin\AppData\Local\430a6f6d-ebfc-4177-ac1e-e8427489153d\9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
Filesize
733KB

MD5
3eedc2ae680453b8ca3b23fd15f529a7

SHA1
4b1cb1070c23bea1abde90a6329cbf45059e8ae4

SHA256
9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec

SHA512
e9075b16347404b61df5698bb055284f94f686ed318ea6f71b93e924aa25e19b2e27f516909ee9787b6bf9925320403dff6d5825b3199edbf2f46608a4e57d9b

Download Submit
memory/2764-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3216-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-2-0x0000000004A10000-0x0000000004B2B000-memory.dmp

Filesize
1.1MB

Download
memory/4304-1-0x0000000004960000-0x0000000004A01000-memory.dmp

Filesize
644KB

Download

description	pid	process	target process
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 4304 wrote to memory of 3216	4304	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 3216 wrote to memory of 4236	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	icacls.exe
PID 3216 wrote to memory of 4236	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	icacls.exe
PID 3216 wrote to memory of 4236	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	icacls.exe
PID 3216 wrote to memory of 512	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 3216 wrote to memory of 512	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 3216 wrote to memory of 512	3216	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe
PID 512 wrote to memory of 2764	512	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe	9bdb0941fb313cb0726068c73e28a31cfcdfd245e56666e6c86d78918ea85aec.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads