Analysis
- max time kernel
138s - max time network
143s - platform
windows7_x64 - resource
win7v200722 - submitted
04/08/2020, 07:00
Static task
static1
Behavioral task
behavioral1
Sample
c2fdf0ff957d16bc5ee6157268d34026.exe
Resource
win7v200722
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
c2fdf0ff957d16bc5ee6157268d34026.exe
Resource
win10
windows10_x64
0 signatures
0 seconds
General
- Target c2fdf0ff957d16bc5ee6157268d34026.exe
- Size 1.6MB
- Sample200804-nn27l9bphx
- SHA256 565dd05e9af2bc368094e8b0f533e54b4f9e677b03805bd48054d78cc2e0df46
- MD5 c2fdf0ff957d16bc5ee6157268d34026
- SHA1 8bfcd8c8677887995aa54303e10e7aad68222d13
- SHA512 fb2dfc22cc2583ee7c6eaf19d2db11dd59e7e52c431a0e68f86fe997664251bdd29f1b7028125b8757fb3534d319c6e3baab01bfa3fda3c0ec25e56f85cda094
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run REG.exe Set value (str) \REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\cred = "rundll32 C:\\Users\\Admin\\AppData\\Local\\Temp\\cred.dll, Main" REG.exe Key created \REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run REG.exe Set value (str) \REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\scr = "rundll32 C:\\Users\\Admin\\AppData\\Local\\Temp\\scr.dll, Main" REG.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1872 schtasks.exe - Loads dropped DLL 10 IoCs
pid Process 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 1520 rundll32.exe 1520 rundll32.exe 1520 rundll32.exe 1520 rundll32.exe 1808 rundll32.exe 1808 rundll32.exe 1808 rundll32.exe 1808 rundll32.exe - Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 1240 wrote to memory of 812 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 24 PID 1240 wrote to memory of 812 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 24 PID 1240 wrote to memory of 812 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 24 PID 1240 wrote to memory of 812 1240 c2fdf0ff957d16bc5ee6157268d34026.exe 24 PID 812 wrote to memory of 1528 812 bdif.exe 27 PID 812 wrote to memory of 1528 812 bdif.exe 27 PID 812 wrote to memory of 1528 812 bdif.exe 27 PID 812 wrote to memory of 1528 812 bdif.exe 27 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1520 812 bdif.exe 28 PID 812 wrote to memory of 1780 812 bdif.exe 30 PID 812 wrote to memory of 1780 812 bdif.exe 30 PID 812 wrote to memory of 1780 812 bdif.exe 30 PID 812 wrote to memory of 1780 812 bdif.exe 30 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1808 812 bdif.exe 31 PID 812 wrote to memory of 1548 812 bdif.exe 35 PID 812 wrote to memory of 1548 812 bdif.exe 35 PID 812 wrote to memory of 1548 812 bdif.exe 35 PID 812 wrote to memory of 1548 812 bdif.exe 35 PID 812 wrote to memory of 1924 812 bdif.exe 36 PID 812 wrote to memory of 1924 812 bdif.exe 36 PID 812 wrote to memory of 1924 812 bdif.exe 36 PID 812 wrote to memory of 1924 812 bdif.exe 36 PID 1548 wrote to memory of 1872 1548 cmd.exe 39 PID 1548 wrote to memory of 1872 1548 cmd.exe 39 PID 1548 wrote to memory of 1872 1548 cmd.exe 39 PID 1548 wrote to memory of 1872 1548 cmd.exe 39 - Executes dropped EXE 1 IoCs
pid Process 812 bdif.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1520 rundll32.exe 1520 rundll32.exe - Blacklisted process makes network request 2 IoCs
flow pid Process 5 1520 rundll32.exe 9 1808 rundll32.exe - NTFS ADS 1 IoCs
description ioc Process File created \??\c:\programdata\1321ba6d1f\bdif.exe:Zone.Identifier c2fdf0ff957d16bc5ee6157268d34026.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c2fdf0ff957d16bc5ee6157268d34026.exe"C:\Users\Admin\AppData\Local\Temp\c2fdf0ff957d16bc5ee6157268d34026.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- NTFS ADS
PID:1240 -
\??\c:\programdata\1321ba6d1f\bdif.exec:\programdata\1321ba6d1f\bdif.exe2⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:812 -
C:\Windows\SysWOW64\REG.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v cred /t REG_SZ /d "rundll32 C:\Users\Admin\AppData\Local\Temp\cred.dll, Main"3⤵
- Adds Run key to start application
PID:1528
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cred.dll, Main3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Blacklisted process makes network request
PID:1520
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C:\Windows\SysWOW64\REG.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v scr /t REG_SZ /d "rundll32 C:\Users\Admin\AppData\Local\Temp\scr.dll, Main"3⤵
- Adds Run key to start application
PID:1780
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\scr.dll, Main3⤵
- Loads dropped DLL
- Blacklisted process makes network request
PID:1808
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C:\Windows\SysWOW64\cmd.execmd.exe /C SCHTASKS /Create /SC HOURLY /MO 1 /TN a174c1ef10e2077451f5b6dda83242a1 /TR c:\programdata\1321ba6d1f\bdif.exe3⤵
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /Create /SC HOURLY /MO 1 /TN a174c1ef10e2077451f5b6dda83242a1 /TR c:\programdata\1321ba6d1f\bdif.exe4⤵
- Creates scheduled task(s)
PID:1872
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C:\Windows\SysWOW64\REG.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d c:\programdata\1321ba6d1f3⤵PID:1924
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