Analysis
- max time kernel
145s - max time network
137s - platform
windows7_x64 - resource
win7 - submitted
13/07/2020, 11:54
Static task
static1
Behavioral task
behavioral1
Sample
Payment.exe
Resource
win7
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Payment.exe
Resource
win10
0 signatures
0 seconds
General
- Target Payment.exe
- Size 1.5MB
- Sample200713-2sql13j712
- SHA256 b22c648668d77e156bb1d3df67f22c0731bc3ea1010b4ddba7317f3f71b33329
- MD5 ab56ad172a0bbb66aeff5c8d18aadc53
- SHA1 9e79bba575e0e09d1b9c0f06f298f9c020b57198
- SHA512 c30ee4d5da355679b8c73ab9c52372e4487b79bedbc2689ce2d1103a28b0209fcd95c2f0a7a39c253ddda367136ec5d5225d492b5af220bd706a0e3b913a2ce3
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Path
-
C:\Users\Admin\AppData\Local\Temp\E2C1E8F1FA\Log.txt
-
masslogger
Ransom Note
- ################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States Windows OS: Microsoft Windows 7 Professional 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: 7/13/2020 11:56:29 AM MassLogger Started: 7/13/2020 11:56:16 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
Signatures
- 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 - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1108 Payment.exe 1108 Payment.exe 1108 Payment.exe 1516 chu.exe 1516 chu.exe 1516 chu.exe 1984 InstallUtil.exe 1984 InstallUtil.exe - Suspicious use of WriteProcessMemory 32 IoCs
description pid Process procid_target PID 1108 wrote to memory of 788 1108 Payment.exe 24 PID 1108 wrote to memory of 788 1108 Payment.exe 24 PID 1108 wrote to memory of 788 1108 Payment.exe 24 PID 1108 wrote to memory of 788 1108 Payment.exe 24 PID 788 wrote to memory of 1088 788 cmd.exe 26 PID 788 wrote to memory of 1088 788 cmd.exe 26 PID 788 wrote to memory of 1088 788 cmd.exe 26 PID 788 wrote to memory of 1088 788 cmd.exe 26 PID 1108 wrote to memory of 1516 1108 Payment.exe 27 PID 1108 wrote to memory of 1516 1108 Payment.exe 27 PID 1108 wrote to memory of 1516 1108 Payment.exe 27 PID 1108 wrote to memory of 1516 1108 Payment.exe 27 PID 1516 wrote to memory of 1900 1516 chu.exe 30 PID 1516 wrote to memory of 1900 1516 chu.exe 30 PID 1516 wrote to memory of 1900 1516 chu.exe 30 PID 1516 wrote to memory of 1900 1516 chu.exe 30 PID 1900 wrote to memory of 2016 1900 cmd.exe 32 PID 1900 wrote to memory of 2016 1900 cmd.exe 32 PID 1900 wrote to memory of 2016 1900 cmd.exe 32 PID 1900 wrote to memory of 2016 1900 cmd.exe 32 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 PID 1516 wrote to memory of 1984 1516 chu.exe 33 - Loads dropped DLL 2 IoCs
pid Process 1108 Payment.exe 1516 chu.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1516 set thread context of 1984 1516 chu.exe 33 - MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
yara_rule masslogger_log_file - MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1108 Payment.exe Token: SeDebugPrivilege 1516 chu.exe Token: SeDebugPrivilege 1984 InstallUtil.exe - Executes dropped EXE 2 IoCs
pid Process 1516 chu.exe 1984 InstallUtil.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1984 InstallUtil.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1984 InstallUtil.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
Processes
-
C:\Users\Admin\AppData\Local\Temp\Payment.exe"C:\Users\Admin\AppData\Local\Temp\Payment.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:1108 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:788 -
C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"3⤵PID:1088
-
-
-
C:\Users\Admin\AppData\Roaming\chu.exe"C:\Users\Admin\AppData\Roaming\chu.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Executes dropped EXE
PID:1516 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:1900 -
C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"4⤵PID:2016
-
-
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:1984
-
-