Analysis
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max time kernel
142s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231020-en -
resource tags
arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system -
submitted
26-10-2023 10:18
Static task
static1
Behavioral task
behavioral1
Sample
Payment Advice.PDF.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
Payment Advice.PDF.exe
Resource
win10v2004-20231020-en
General
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Target
Payment Advice.PDF.exe
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Size
329KB
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MD5
9e6b1fdb47d280b886a9c66c4363a60c
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SHA1
3cb3539f61feaf0e1bf13f92d4a05d902d41da9b
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SHA256
6c85b7d283e61adeb841aaa3ddb0b5c8ad1ca6650df408ed03f0a874cf221971
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SHA512
a4f7a5477fc3a5fe69444e6a1a1a4d78ffc4677837fa4f2d9c2efea7400171f7de695c61f3afdf6c95c31bed28713924e48dcf535dfc3bc3a4b60690d28367e5
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SSDEEP
6144:/CKYBMNit2boZ2L/icl4iPJvGy+FsPe35bgaGPEQD:/fY6BboZ+/icCcGvL35bgaGf
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.alsarisi.com - Port:
587 - Username:
[email protected] - Password:
May$2009 - Email To:
[email protected]
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3928-9-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger -
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-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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 38 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Payment Advice.PDF.exedescription pid process target process PID 3444 set thread context of 3928 3444 Payment Advice.PDF.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 3928 RegAsm.exe 3928 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 3928 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Payment Advice.PDF.exedescription pid process target process PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe PID 3444 wrote to memory of 3928 3444 Payment Advice.PDF.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\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-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ Payment Advice.PDF.exe"C:\Users\Admin\AppData\Local\Temp\ Payment Advice.PDF.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3444 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3928