Analysis
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max time kernel
160s -
max time network
199s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
13-10-2023 11:03
Static task
static1
Behavioral task
behavioral1
Sample
Xcipfrrs.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Xcipfrrs.exe
Resource
win10v2004-20230915-en
General
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Target
Xcipfrrs.exe
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Size
340KB
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MD5
be386c47c42d11ab2b0ee2e820297608
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SHA1
3a2720f80b8394f0ce859d1dd5566b681252ea84
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SHA256
32a00fc9b61a3ca12be1aa91388fbd5c37b19650b01a11d0e5521097b3de3e11
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SHA512
b7e401045970b7349c8e113cb53c64171e54e34c526a2b3ef8344156f6bd5fc40479d6c1f4281e5a82dc7eeab143a257c6958cc13da25979acd4cd7e4be19486
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SSDEEP
6144:QvpJo0XE/ZLUsQqVChyUWmSvoPsasomPFpyit2mHKW2cwOkxStaC8dNH1:ko/qqoU8zsu6stR
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6380706838:AAHeNJQXD2oljrKM46U8G-Zyq3GHA5SyN3c/sendMessage?chat_id=5262627523
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/3784-9-0x0000000140000000-0x0000000140022000-memory.dmp family_snakekeylogger behavioral2/memory/3784-15-0x0000022CC2BC0000-0x0000022CC2BD0000-memory.dmp family_snakekeylogger -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Xcipfrrs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sssssss = "C:\\Users\\Admin\\AppData\\Roaming\\sssssss.exe" Xcipfrrs.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 75 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Xcipfrrs.exedescription pid process target process PID 2036 set thread context of 3784 2036 Xcipfrrs.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
MSBuild.exepid process 3784 MSBuild.exe 3784 MSBuild.exe 3784 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Xcipfrrs.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 2036 Xcipfrrs.exe Token: SeDebugPrivilege 3784 MSBuild.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
Xcipfrrs.exedescription pid process target process PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe PID 2036 wrote to memory of 3784 2036 Xcipfrrs.exe MSBuild.exe -
outlook_office_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Xcipfrrs.exe"C:\Users\Admin\AppData\Local\Temp\Xcipfrrs.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3784