Analysis
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max time kernel
98s -
max time network
139s -
platform
windows7_x64 -
resource
win7v200430 -
submitted
14/07/2020, 13:36
Static task
static1
Behavioral task
behavioral1
Sample
GSYJrJhEUVbUoZN.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
GSYJrJhEUVbUoZN.exe
Resource
win10
General
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Target
GSYJrJhEUVbUoZN.exe
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Size
1003KB
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MD5
a25c4a2a838811521034e121d502ed72
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SHA1
5d81483df22eb8ad3b6b8198b63853f70f6d798b
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SHA256
7fb6e9a788b18806469167cf64458dd590122593a04489cf70bb70434905a246
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SHA512
889fbd8be7dda4d1dc69a498a96178b9992fb637460aaa54417b20a56cd9ab39c37f041e2c1997b873049fd157a6cd6edbf77be7a444076a5c803fd77b8d26b4
Malware Config
Signatures
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Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1772 GSYJrJhEUVbUoZN.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1772 GSYJrJhEUVbUoZN.exe -
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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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1804 schtasks.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1296 wrote to memory of 1804 1296 GSYJrJhEUVbUoZN.exe 26 PID 1296 wrote to memory of 1804 1296 GSYJrJhEUVbUoZN.exe 26 PID 1296 wrote to memory of 1804 1296 GSYJrJhEUVbUoZN.exe 26 PID 1296 wrote to memory of 1804 1296 GSYJrJhEUVbUoZN.exe 26 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 PID 1296 wrote to memory of 1772 1296 GSYJrJhEUVbUoZN.exe 28 -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1296 set thread context of 1772 1296 GSYJrJhEUVbUoZN.exe 28 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1772 GSYJrJhEUVbUoZN.exe 1772 GSYJrJhEUVbUoZN.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1772 GSYJrJhEUVbUoZN.exe -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
yara_rule masslogger_log_file -
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 -
MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
Processes
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C:\Users\Admin\AppData\Local\Temp\GSYJrJhEUVbUoZN.exe"C:\Users\Admin\AppData\Local\Temp\GSYJrJhEUVbUoZN.exe"1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1296 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ATkXpfNGZeziic" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA1F9.tmp"2⤵
- Creates scheduled task(s)
PID:1804
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C:\Users\Admin\AppData\Local\Temp\GSYJrJhEUVbUoZN.exe"{path}"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: AddClipboardFormatListener
PID:1772
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