Analysis
- max time kernel
91s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20220721-en - resource tags
- submitted
23/07/2022, 15:51
General
- Target Quotation No-248_R1..exe
- Size 417KB
- Sample220723-tagtxafeaj
- SHA256 64751196bc0566bc4dd1dafb1b99ca28e7676e6c6f56fb0a9e4e1f43ea61dd10
Malware Config
Extracted
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snakekeylogger
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https://api.telegram.org/bot5200365593:AAGRpC_tWb3avAayYSeKw5B6h5VRh7b19kU/sendMessage?chat_id=1482312326
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Quotation No-248_R1..exe"C:\Users\Admin\AppData\Local\Temp\Quotation No-248_R1..exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qQlGsjYc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8E2.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Quotation No-248_R1..exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Quotation No-248_R1..exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Quotation No-248_R1..exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Quotation No-248_R1..exe.log
tmpC8E2.tmp
memory/4156-135-0x0000000007D80000-0x0000000007DE6000-memory.dmp
memory/4156-134-0x0000000005640000-0x000000000564A000-memory.dmp
memory/4156-133-0x0000000005660000-0x00000000056FC000-memory.dmp
memory/4156-132-0x0000000005520000-0x00000000055B2000-memory.dmp
memory/4156-130-0x0000000000B30000-0x0000000000B9E000-memory.dmp
memory/4156-131-0x0000000005A10000-0x0000000005FB4000-memory.dmp
memory/4532-141-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4532-143-0x0000000006C60000-0x0000000006E22000-memory.dmp