Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13-12-2024 08:16
Static task
static1
Behavioral task
behavioral1
Sample
ekstre.pdf.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
ekstre.pdf.exe
Resource
win10v2004-20241007-en
General
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Target
ekstre.pdf.exe
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Size
491KB
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MD5
7e489c990749ef292c4d2bb492229d33
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SHA1
bb912cefcbe835e760b7b23541614c632b5386ca
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SHA256
a90064fabd3a584e530137cca993bdb15ea853afadceee02d80a5f46601255ea
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SHA512
722a537217da520f7d956c5cead9dd2eef1656e6f3e3c48ceb4330c9af3fd10f0f4d9960da9872567d7f3815393745c5da23543a174271ce6f797fcf7a666e09
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SSDEEP
12288:ZWgIcViPGnn1LovLpbclh4ONHAzkHcuoRBZYI0fabMpa:MgsPmK1chtNsAc0IPYQ
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot7125297965:AAFl6eQAjxqGeAfWHpfHbGAtADDAZUyFidM/sendMessage?chat_id=6367688286
Signatures
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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/116-4-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Snakekeylogger family
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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 7 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4876 set thread context of 116 4876 ekstre.pdf.exe 83 -
Program crash 1 IoCs
pid pid_target Process procid_target 3016 116 WerFault.exe 83 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AddInProcess32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 116 AddInProcess32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 116 AddInProcess32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 116 4876 ekstre.pdf.exe 83 PID 4876 wrote to memory of 8 4876 ekstre.pdf.exe 84 PID 4876 wrote to memory of 8 4876 ekstre.pdf.exe 84 PID 4876 wrote to memory of 8 4876 ekstre.pdf.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\ekstre.pdf.exe"C:\Users\Admin\AppData\Local\Temp\ekstre.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4876 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:116 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 116 -s 14603⤵
- Program crash
PID:3016
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"2⤵PID:8
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 116 -ip 1161⤵PID:2460