Analysis
- max time kernel
65s - max time network
160s - platform
windows7_x64 - resource
win7v20210410 - submitted
19/08/2021, 09:45
Static task
static1
Behavioral task
behavioral1
Sample
Hp4 81921.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
Hp4 81921.exe
Resource
win10v20210410
Behavioral task
behavioral3
Sample
Inq 81921.exe
Resource
win7v20210410
Behavioral task
behavioral4
Sample
Inq 81921.exe
Resource
win10v20210410
General
- Target Inq 81921.exe
- Size 1.6MB
- Sample210819-235ldvkddj
- SHA256 c7daf67621a4eb3137b1abcb90f69833d5cf178a31fd524208c5a357e14671d8
- MD5 a22c480f719279d573e6339615ccf032
- SHA1 257a9ee04980b38c619b626fdbe8f9d1592cde2c
- SHA512 4b0a1d7f8bf3d55798f2ce5f801bb985b0cd11d6a6fb422d23c2821fd9b69fc3b86f5ea038aab2c896f96956c61bf2bf36f7e1f32763fe261cecc80558e19f2a
- MD5 SHA1 SHA512
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\5089EDCC92\Log.txt
-
masslogger
- <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 8/19/2021 9:50:31 AM MassLogger Started: 8/19/2021 9:50:25 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 3 IoCs
resource yara_rule behavioral3/memory/1624-85-0x00000000004948CE-mapping.dmp family_masslogger behavioral3/memory/1624-84-0x0000000000400000-0x000000000049A000-memory.dmp family_masslogger behavioral3/memory/1624-86-0x0000000000400000-0x000000000049A000-memory.dmp family_masslogger - MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
yara_rule masslogger_log_file - Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Inq 81921.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Inq 81921.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Control Panel\International\Geo\Nation Inq 81921.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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 5 api.ipify.org - Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum Inq 81921.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 Inq 81921.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1116 set thread context of 1624 1116 Inq 81921.exe 38 - 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.
pid Process 560 schtasks.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1624 Inq 81921.exe - Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 316 powershell.exe 1228 powershell.exe 1116 Inq 81921.exe 1096 powershell.exe 316 powershell.exe 1228 powershell.exe 1096 powershell.exe 1624 Inq 81921.exe 1624 Inq 81921.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 316 powershell.exe Token: SeDebugPrivilege 1228 powershell.exe Token: SeDebugPrivilege 1116 Inq 81921.exe Token: SeDebugPrivilege 1096 powershell.exe Token: SeDebugPrivilege 1624 Inq 81921.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1624 Inq 81921.exe - Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 1116 wrote to memory of 316 1116 Inq 81921.exe 29 PID 1116 wrote to memory of 316 1116 Inq 81921.exe 29 PID 1116 wrote to memory of 316 1116 Inq 81921.exe 29 PID 1116 wrote to memory of 316 1116 Inq 81921.exe 29 PID 1116 wrote to memory of 1228 1116 Inq 81921.exe 32 PID 1116 wrote to memory of 1228 1116 Inq 81921.exe 32 PID 1116 wrote to memory of 1228 1116 Inq 81921.exe 32 PID 1116 wrote to memory of 1228 1116 Inq 81921.exe 32 PID 1116 wrote to memory of 560 1116 Inq 81921.exe 34 PID 1116 wrote to memory of 560 1116 Inq 81921.exe 34 PID 1116 wrote to memory of 560 1116 Inq 81921.exe 34 PID 1116 wrote to memory of 560 1116 Inq 81921.exe 34 PID 1116 wrote to memory of 1096 1116 Inq 81921.exe 36 PID 1116 wrote to memory of 1096 1116 Inq 81921.exe 36 PID 1116 wrote to memory of 1096 1116 Inq 81921.exe 36 PID 1116 wrote to memory of 1096 1116 Inq 81921.exe 36 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38 PID 1116 wrote to memory of 1624 1116 Inq 81921.exe 38
Processes
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C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe"C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:316
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mFdyWrlfAoDz.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1228
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mFdyWrlfAoDz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6F7.tmp"2⤵
- Creates scheduled task(s)
PID:560
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mFdyWrlfAoDz.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1096
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C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe"C:\Users\Admin\AppData\Local\Temp\Inq 81921.exe"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1624
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