Analysis
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max time kernel
133s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
01-02-2024 18:44
Static task
static1
Behavioral task
behavioral1
Sample
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe
Resource
win10v2004-20231215-en
General
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Target
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe
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Size
706KB
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MD5
fc5789a36442ec7dfb8e9edb885ed604
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SHA1
63df4b6f2597f2edd2fe04da6904cc22b1407b5c
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SHA256
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a
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SHA512
5ef0ce19b93355bc9cb356a3e00cec4ab538b1c077623c9811d451fbaefa23ca938eb40709eda636d217b5f8032d7c0203c8e63830308d06ae4cc9de39d90afa
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SSDEEP
12288:/rJB1NlLnzodaofm9DiFrbQbs2CSDygwgmEWvhipuiCs0:jjrlL0dvm9DiBbH2CrWAvhinCs0
Malware Config
Extracted
djvu
http://habrafa.com/test1/get.php
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extension
.cdcc
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offline_id
LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1
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payload_url
http://brusuax.com/dl/build2.exe
http://habrafa.com/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-iVcrVFVRqu Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: support@freshingmail.top Reserve e-mail address to contact us: datarestorehelpyou@airmail.cc Your personal ID: 0846ASdw
Signatures
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Detected Djvu ransomware 9 IoCs
Processes:
resource yara_rule behavioral2/memory/3904-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral2/memory/3456-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3456-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3456-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3456-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3456-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2316-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2316-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2316-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3e84b1a-3239-451e-99e9-814050ed1db2\\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe\" --AutoStart" e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.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 9 api.2ip.ua 10 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exee46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exedescription pid process target process PID 3904 set thread context of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 set thread context of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4088 2316 WerFault.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exepid process 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exee46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exee46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exedescription pid process target process PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3904 wrote to memory of 3456 3904 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3456 wrote to memory of 1692 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe icacls.exe PID 3456 wrote to memory of 1692 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe icacls.exe PID 3456 wrote to memory of 1692 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe icacls.exe PID 3456 wrote to memory of 1408 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3456 wrote to memory of 1408 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 3456 wrote to memory of 1408 3456 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe PID 1408 wrote to memory of 2316 1408 e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\e3e84b1a-3239-451e-99e9-814050ed1db2" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe"C:\Users\Admin\AppData\Local\Temp\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exe" --Admin IsNotAutoStart IsNotTask4⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 5685⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2316 -ip 23161⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\e3e84b1a-3239-451e-99e9-814050ed1db2\e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a.exeFilesize
706KB
MD5fc5789a36442ec7dfb8e9edb885ed604
SHA163df4b6f2597f2edd2fe04da6904cc22b1407b5c
SHA256e46ca34c6b53f5af647093039f3e3dc6e49d407a573493cb1d5e811e0564d44a
SHA5125ef0ce19b93355bc9cb356a3e00cec4ab538b1c077623c9811d451fbaefa23ca938eb40709eda636d217b5f8032d7c0203c8e63830308d06ae4cc9de39d90afa
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memory/1408-18-0x0000000004650000-0x00000000046ED000-memory.dmpFilesize
628KB
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memory/2316-20-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2316-21-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2316-23-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3456-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3456-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3456-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3456-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3456-15-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3904-1-0x0000000004910000-0x00000000049B0000-memory.dmpFilesize
640KB
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memory/3904-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmpFilesize
1.1MB