djvu | bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470

Analysis

max time kernel
145s
max time network
83s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-06-2024 16:29

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General

Target

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
Size

747KB
MD5

7e733e8d4e854936c90dafe90d7589ab
SHA1

a17a005e1cd67c6f427565b91d7ad3c80f42df72
SHA256

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470
SHA512

a8a0d2cf0cf19eb3a1ada32571c07217f4c990b038a7631c8913f89e3113e7625a5f6a0d3c4cb7f2773b56391ecd71af4854f0a01924030d07c76aac38fc8ef4
SSDEEP

12288:+04J5Ek55//i7xrbqsK9KirLVUZ5A6dRfrr0M2VDxMkDi4nadXmghE8J/ChtP2jh:74Jd/i7x3qsuKehUzAEzr0M2Vvi4nI2S

Score

10^/10

djvu discovery persistence ransomware upx

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.bbbw
offline_id
jYeuANkMCJOEtaXsN8JcBUuEjwSP20EGT4t2Nct1
payload_url
http://lencu.top/dl/build2.exe
http://fuyt.org/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. You can get and look video overview decrypt tool: https://we.tl/t-qqj8MrDVtG Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0382UIhfSd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2528-3-0x0000000002270000-0x000000000238B000-memory.dmp	family_djvu
behavioral2/memory/1820-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1820-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1820-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1820-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1820-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2352-38-0x0000000000400000-0x0000000000537000-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:

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3892 icacls.exe

pid	process
3892	icacls.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2528-0-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/memory/2528-8-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
C:\Users\Admin\AppData\Local\76382bc4-308c-43aa-b6b5-8b4f15252f85\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	upx
behavioral2/memory/4452-16-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/memory/4452-18-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/memory/4452-23-0x0000000000400000-0x00000000004FE000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\76382bc4-308c-43aa-b6b5-8b4f15252f85\\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe\" --AutoStart"	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 api.2ip.ua
7 api.2ip.ua

flow	ioc
3	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exebbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

description	pid	process	target process
PID 2528 set thread context of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 set thread context of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.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:

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exebbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

pid	process
1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
2352	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
2352	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exebbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exebbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe

C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2528

C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1820

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\76382bc4-308c-43aa-b6b5-8b4f15252f85" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3892

C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4452

C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2352

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\76382bc4-308c-43aa-b6b5-8b4f15252f85\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
Filesize
747KB

MD5
7e733e8d4e854936c90dafe90d7589ab

SHA1
a17a005e1cd67c6f427565b91d7ad3c80f42df72

SHA256
bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470

SHA512
a8a0d2cf0cf19eb3a1ada32571c07217f4c990b038a7631c8913f89e3113e7625a5f6a0d3c4cb7f2773b56391ecd71af4854f0a01924030d07c76aac38fc8ef4

Download Submit
memory/1820-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1820-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1820-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1820-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1820-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2352-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2528-8-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2528-0-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2528-2-0x0000000002070000-0x0000000002103000-memory.dmp

Filesize
588KB

Download
memory/2528-3-0x0000000002270000-0x000000000238B000-memory.dmp

Filesize
1.1MB

Download
memory/4452-23-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/4452-18-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/4452-16-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download

description	pid	process	target process
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 2528 wrote to memory of 1820	2528	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 1820 wrote to memory of 3892	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	icacls.exe
PID 1820 wrote to memory of 3892	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	icacls.exe
PID 1820 wrote to memory of 3892	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	icacls.exe
PID 1820 wrote to memory of 4452	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 1820 wrote to memory of 4452	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 1820 wrote to memory of 4452	1820	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
PID 4452 wrote to memory of 2352	4452	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe	bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe