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Analysis
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max time kernel
67s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
31/01/2023, 05:32
Static task
static1
Behavioral task
behavioral1
Sample
tmp_yefxj3l.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
tmp_yefxj3l.exe
Resource
win10v2004-20220812-en
General
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Target
tmp_yefxj3l.exe
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Size
649KB
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MD5
0348469c2faa81c6581790280e815c42
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SHA1
abe0c89fefee86e8b69857d4499dc5d63607a7f1
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SHA256
d0d573cf8f2460ca3d4e9074af0a2c13b56c287fb7ace1560b8c8209170de73c
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SHA512
2c4143a7cb14f391ae8fffb156c51ff328d503200f033bb70721611ee972d625694dd2a96f4a19537504f8511664f7c5caa791fd42737470a1f6eecd12158bde
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SSDEEP
12288:Tj4C5sHSY+/o2Qa1s9W7aB4Qyux3qSMWTvPWWeh3ih9HlAhTCV:AC5sn+/ZIWK1x4mGBYTuC
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.wilcon.com.ph - Port:
587 - Username:
[email protected] - Password:
password@cashier - Email To:
[email protected]
https://api.telegram.org/bot5839027687:AAGrC4UWgd0JQxMHOf1dCehA-oSrYF_Bez8/sendMessage?chat_id=1094077450
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 6 IoCs
resource yara_rule behavioral1/memory/696-67-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/696-69-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/696-70-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/696-71-0x000000000042083E-mapping.dmp family_snakekeylogger behavioral1/memory/696-73-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/696-75-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp_yefxj3l.exe Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp_yefxj3l.exe Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp_yefxj3l.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 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2024 set thread context of 696 2024 tmp_yefxj3l.exe 31 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1356 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 696 tmp_yefxj3l.exe 2028 powershell.exe 696 tmp_yefxj3l.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 696 tmp_yefxj3l.exe Token: SeDebugPrivilege 2028 powershell.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 2024 wrote to memory of 2028 2024 tmp_yefxj3l.exe 27 PID 2024 wrote to memory of 2028 2024 tmp_yefxj3l.exe 27 PID 2024 wrote to memory of 2028 2024 tmp_yefxj3l.exe 27 PID 2024 wrote to memory of 2028 2024 tmp_yefxj3l.exe 27 PID 2024 wrote to memory of 1356 2024 tmp_yefxj3l.exe 29 PID 2024 wrote to memory of 1356 2024 tmp_yefxj3l.exe 29 PID 2024 wrote to memory of 1356 2024 tmp_yefxj3l.exe 29 PID 2024 wrote to memory of 1356 2024 tmp_yefxj3l.exe 29 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 PID 2024 wrote to memory of 696 2024 tmp_yefxj3l.exe 31 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp_yefxj3l.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp_yefxj3l.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mcveldGLmqL.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2028
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mcveldGLmqL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD135.tmp"2⤵
- Creates scheduled task(s)
PID:1356
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C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:696
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5dbe9b09a45cb538a877ed4fb7b302b48
SHA15af7b6cd29a64322c7c94e38c5e236768480b4d1
SHA25664148890ab27f7728c9e5f8606b1fbb2b30c4f03398e755b394b1bbd105e7180
SHA512f8876964e43d856ecdf10332501862bc0245c23e2234633ab5b0ab4c84a7e3b29c137b4f9a6ef793b8db7131e85a10b6f389f3006b890c7f702fbacb1be0d575