Analysis
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max time kernel
147s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
02-03-2023 07:35
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe
Resource
win10v2004-20230220-en
General
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Target
SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe
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Size
81KB
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MD5
d0a9b69bad966520f71412a8ce2035b0
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SHA1
ba5347ee2a896b27d211520a3666a682aa9f8e28
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SHA256
a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d
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SHA512
489000c1a40703380e285912e42916cd4ae2568f5a7371013f9c8b3bb3465440330ddef43731b6b1a8c653661162a805cf745bc8fd66ef386a8d039203920e01
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SSDEEP
1536:UxYAEa9Bj08oGaa82Tq70ddJwgKi3izHxGZnLWzSH3OQMjQ4Nzq2B:Ux39bo4EifJKEmH8ZnLuOqHNzR
Malware Config
Extracted
purecrypter
http://192.3.26.135/uo/Wqnssgirj.dat
Extracted
snakekeylogger
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
doDHyw%0 - Email To:
[email protected]
Signatures
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
resource yara_rule behavioral2/memory/4184-166-0x0000000000400000-0x0000000000426000-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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.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 35 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4504 set thread context of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 3032 powershell.exe 3032 powershell.exe 4184 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe Token: SeDebugPrivilege 3032 powershell.exe Token: SeDebugPrivilege 4184 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4504 wrote to memory of 3032 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 85 PID 4504 wrote to memory of 3032 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 85 PID 4504 wrote to memory of 3032 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 85 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 PID 4504 wrote to memory of 4184 4504 SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe 93 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan-Downloader.0059c9381.12565.25515.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4504 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3032
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4184
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82