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Analysis
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max time kernel
94s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22/12/2024, 03:13
Static task
static1
Behavioral task
behavioral1
Sample
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Resource
win10v2004-20241007-en
General
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Target
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
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Size
761KB
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MD5
d829a46501729b196b794f955aa69cc0
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SHA1
20efd5be2d09c31001c7b107388a9aee76f41eea
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SHA256
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41
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SHA512
1497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec
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SSDEEP
12288:WvbhHdeD79q7DmMHUvJqHv/bpxwW4nnpdT0LHdVdjl8/e+7krnhOQUc4Mng/KWDi:E7eVSeJqPjQXnoLHdVdm/37kMQb4pKUi
Malware Config
Extracted
djvu
http://fuyt.org/test1/get.php
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extension
.ghas
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offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
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payload_url
http://zerit.top/dl/build2.exe
http://fuyt.org/files/1/build3.exe
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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-0SLhZxAjRX 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: 0445JIjdm
Signatures
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Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral2/memory/3088-2-0x0000000002220000-0x000000000233B000-memory.dmp family_djvu behavioral2/memory/4280-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4280-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4280-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4280-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4280-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1660-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1660-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1660-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4920 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5a060378-0a5d-44d6-b3ea-e5faaae13326\\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe\" --AutoStart" b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.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.
flow ioc 8 api.2ip.ua 6 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3088 set thread context of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 5072 set thread context of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4860 1660 WerFault.exe 87 -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 3088 wrote to memory of 4280 3088 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 83 PID 4280 wrote to memory of 4920 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 84 PID 4280 wrote to memory of 4920 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 84 PID 4280 wrote to memory of 4920 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 84 PID 4280 wrote to memory of 5072 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 85 PID 4280 wrote to memory of 5072 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 85 PID 4280 wrote to memory of 5072 4280 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 85 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87 PID 5072 wrote to memory of 1660 5072 b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3088 -
C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4280 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\5a060378-0a5d-44d6-b3ea-e5faaae13326" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:4920
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C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5072 -
C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:1660 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 5845⤵
- Program crash
PID:4860
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1660 -ip 16601⤵PID:1712
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\5a060378-0a5d-44d6-b3ea-e5faaae13326\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Filesize761KB
MD5d829a46501729b196b794f955aa69cc0
SHA120efd5be2d09c31001c7b107388a9aee76f41eea
SHA256b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41
SHA5121497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec