masslogger | 2485826ad6e01c5ae26b460a9152854b3a6780da46f4abbca35be5b0bd570eb3

General

Target
PI List-pdf.exe
Size 742KB
Sample200705-8jjl49b8ds
SHA256 2485826ad6e01c5ae26b460a9152854b3a6780da46f4abbca35be5b0bd570eb3
MD5 f44eb63e27a1ecc5a17a22712898c003
SHA1 65e320e9a7a9c72c98d3de771899fc45bc99388a
SHA512 a6355fe3a7c76c0dd504170afc68e5251b5488dfd32c893c7ae4a25657d61812bb5d6351d002565626a8d3245483559abff31e704cd69cfbbfdf5090d591d6a6
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 1332	1492	PI List-pdf.exe	27
PID 1492 wrote to memory of 1332	1492	PI List-pdf.exe	27
PID 1492 wrote to memory of 1332	1492	PI List-pdf.exe	27
PID 1492 wrote to memory of 1332	1492	PI List-pdf.exe	27
PID 1492 wrote to memory of 528	1492	PI List-pdf.exe	29
PID 1492 wrote to memory of 528	1492	PI List-pdf.exe	29
PID 1492 wrote to memory of 528	1492	PI List-pdf.exe	29
PID 1492 wrote to memory of 528	1492	PI List-pdf.exe	29
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30
PID 1492 wrote to memory of 1248	1492	PI List-pdf.exe	30

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1248	PI List-pdf.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
5	api.ipify.org

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	PI List-pdf.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PI List-pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	PI List-pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	PI List-pdf.exe
Token: SeDebugPrivilege	1248	PI List-pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1248	PI List-pdf.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1332	schtasks.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1248	PI List-pdf.exe
1248	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe
1492	PI List-pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1492 set thread context of 1248	1492	PI List-pdf.exe	30

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PI List-pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PI List-pdf.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	PI List-pdf.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Looks for VMWare Tools registry key
- Maps connected drives based on registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Checks BIOS information in registry
- Looks for VirtualBox Guest Additions in registry
PID:1492
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LNougonJUR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3B0C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1332
- C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe"
  2⤵
  PID:528
- C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\PI List-pdf.exe"
  2⤵
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious behavior: EnumeratesProcesses
  PID:1248