Analysis
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max time kernel
143s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26-12-2023 16:47
Static task
static1
Behavioral task
behavioral1
Sample
mv Sider Capri Particulars.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
mv Sider Capri Particulars.exe
Resource
win10v2004-20231215-en
General
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Target
mv Sider Capri Particulars.exe
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Size
432KB
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MD5
791d56774e02ea0ab8fe059c85cc2ebd
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SHA1
b9bc54f8cc756e694a9e986416ff69da390eba65
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SHA256
504b7897b009fab8381a73f6298317e2d5245a98b2a27530e66233f682671c45
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SHA512
b404955b6f0195397f796c7c51409e71d6040b36a8c5e37f8f8c710f249be828d95a13d49a62d1f84ae7febe77290fa87ad1c14ee977bac7713cb8e972e404d3
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SSDEEP
12288:E2t+axyVJLzNnZa693JxwTIAqf2HQGZwLs41:vwVJLzNno695x+I32XbQ
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2616-27-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral2/memory/2616-42-0x00000000055C0000-0x00000000055D0000-memory.dmp family_snakekeylogger -
Drops startup file 2 IoCs
Processes:
Powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe Powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe Powershell.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.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.
Processes:
flow ioc 44 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
mv Sider Capri Particulars.exedescription pid process target process PID 3004 set thread context of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
Powershell.exeRegAsm.exepid process 1108 Powershell.exe 1108 Powershell.exe 2616 RegAsm.exe 2616 RegAsm.exe 2616 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Powershell.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 1108 Powershell.exe Token: SeDebugPrivilege 2616 RegAsm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
mv Sider Capri Particulars.exedescription pid process target process PID 3004 wrote to memory of 1108 3004 mv Sider Capri Particulars.exe Powershell.exe PID 3004 wrote to memory of 1108 3004 mv Sider Capri Particulars.exe Powershell.exe PID 3004 wrote to memory of 1108 3004 mv Sider Capri Particulars.exe Powershell.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe PID 3004 wrote to memory of 2616 3004 mv Sider Capri Particulars.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\mv Sider Capri Particulars.exe"C:\Users\Admin\AppData\Local\Temp\mv Sider Capri Particulars.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3004 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\mv Sider Capri Particulars.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1108 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2616
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82