Analysis
- max time kernel
65s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
25/01/2023, 13:00
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
- Target file.exe
- Size 849KB
- Sample230125-p8nb5agb28
- SHA256 7d1c91342282f5a34d6035a539fa1b3f0ae9e62182cb749c1269807b2deea2be
- MD5 48110241d04029bf30beb4525d876192
- SHA1 5ab35ba90ef00edd3e28f62021401603902ed3c1
- SHA512 3a17d8517019fb9a432c2bb274b86ddbbe7eafe7e7c68faf6f3164d66d5e9559ad14c977497759949c606fb065289f957c7ad100565cbd8ea7c51bd2ef28c484
- SSDEEP 24576:R8kyGyO9QzlGI6AAgZh1Gsvi1igIMfWYn:R8kypO9jI6AXKXV
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
snakekeylogger
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Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
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Port
587
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Username
-
Password
^!uJBr^9 daniel
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
resource yara_rule behavioral2/memory/3652-142-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe - Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 46 checkip.dyndns.org - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4664 set thread context of 3652 4664 file.exe 92 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1956 schtasks.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4664 file.exe 4664 file.exe 3652 file.exe 4756 powershell.exe 3652 file.exe 4756 powershell.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4664 file.exe Token: SeDebugPrivilege 4756 powershell.exe Token: SeDebugPrivilege 3652 file.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4664 wrote to memory of 4756 4664 file.exe 88 PID 4664 wrote to memory of 4756 4664 file.exe 88 PID 4664 wrote to memory of 4756 4664 file.exe 88 PID 4664 wrote to memory of 1956 4664 file.exe 90 PID 4664 wrote to memory of 1956 4664 file.exe 90 PID 4664 wrote to memory of 1956 4664 file.exe 90 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 PID 4664 wrote to memory of 3652 4664 file.exe 92 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4664 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UBKVzlc.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4756
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UBKVzlc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp966.tmp"2⤵
- Creates scheduled task(s)
PID:1956
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3652
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\tmp966.tmp
- Size 1KB
- SHA256 432ca02140126e92a2b3304c8ed315b9a59d2bae749a1f08614adcf2a3ee2b10
- MD5 e606c48230f790fb084bf03c108abfd1
- SHA1 14b4f2e039b4a67464050b6e3f37819abc12c4a3
- SHA512 703f9faf3bfc4025bc45f7647af45cfdb692aca0ff56d873aa561a2cc2d3929625beb2149f1a5fbc8e89a88ef9722fe3befee71d95ca5f39a00ad9b68e0b051d
- MD5 SHA1 SHA512