Analysis
- max time kernel
146s - max time network
138s - platform
windows7_x64 - resource
win7v200722 - submitted
31/07/2020, 07:45
Static task
static1
Behavioral task
behavioral1
Sample
c4544bc7266585d57059928b63cb7b8d.exe
Resource
win7v200722
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
c4544bc7266585d57059928b63cb7b8d.exe
Resource
win10v200722
windows10_x64
0 signatures
0 seconds
General
- Target c4544bc7266585d57059928b63cb7b8d.exe
- Size 1.1MB
- Sample200731-v66cfpgbnx
- SHA256 1afefa89693d4e1d7011a0a41447babc5dc526cced99039e969cb6a0a668f5f7
- MD5 c4544bc7266585d57059928b63cb7b8d
- SHA1 9faca02e36db73839a403fdfe2cac686004f9fb7
- SHA512 7a179a5379b3dced50b8a4ca34adcbb6b82fb2529ac5cc6a64881aba93b8f7b4f027cd198b6ef6f999d423f7f00537c5bf9d3ab1ac37b096935c4ac0f45a7421
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 284 bdif.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1108 rundll32.exe 1108 rundll32.exe - Blacklisted process makes network request 2 IoCs
flow pid Process 5 1108 rundll32.exe 9 520 rundll32.exe - NTFS ADS 1 IoCs
description ioc Process File created \??\c:\programdata\1321ba6d1f\bdif.exe:Zone.Identifier c4544bc7266585d57059928b63cb7b8d.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process 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 Key created \REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run 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 2000 schtasks.exe - Loads dropped DLL 10 IoCs
pid Process 844 c4544bc7266585d57059928b63cb7b8d.exe 844 c4544bc7266585d57059928b63cb7b8d.exe 1108 rundll32.exe 1108 rundll32.exe 1108 rundll32.exe 1108 rundll32.exe 520 rundll32.exe 520 rundll32.exe 520 rundll32.exe 520 rundll32.exe - Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 844 wrote to memory of 284 844 c4544bc7266585d57059928b63cb7b8d.exe 24 PID 844 wrote to memory of 284 844 c4544bc7266585d57059928b63cb7b8d.exe 24 PID 844 wrote to memory of 284 844 c4544bc7266585d57059928b63cb7b8d.exe 24 PID 844 wrote to memory of 284 844 c4544bc7266585d57059928b63cb7b8d.exe 24 PID 284 wrote to memory of 1428 284 bdif.exe 27 PID 284 wrote to memory of 1428 284 bdif.exe 27 PID 284 wrote to memory of 1428 284 bdif.exe 27 PID 284 wrote to memory of 1428 284 bdif.exe 27 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1108 284 bdif.exe 29 PID 284 wrote to memory of 1904 284 bdif.exe 30 PID 284 wrote to memory of 1904 284 bdif.exe 30 PID 284 wrote to memory of 1904 284 bdif.exe 30 PID 284 wrote to memory of 1904 284 bdif.exe 30 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 520 284 bdif.exe 31 PID 284 wrote to memory of 1992 284 bdif.exe 35 PID 284 wrote to memory of 1992 284 bdif.exe 35 PID 284 wrote to memory of 1992 284 bdif.exe 35 PID 284 wrote to memory of 1992 284 bdif.exe 35 PID 284 wrote to memory of 1988 284 bdif.exe 36 PID 284 wrote to memory of 1988 284 bdif.exe 36 PID 284 wrote to memory of 1988 284 bdif.exe 36 PID 284 wrote to memory of 1988 284 bdif.exe 36 PID 1992 wrote to memory of 2000 1992 cmd.exe 39 PID 1992 wrote to memory of 2000 1992 cmd.exe 39 PID 1992 wrote to memory of 2000 1992 cmd.exe 39 PID 1992 wrote to memory of 2000 1992 cmd.exe 39
Processes
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C:\Users\Admin\AppData\Local\Temp\c4544bc7266585d57059928b63cb7b8d.exe"C:\Users\Admin\AppData\Local\Temp\c4544bc7266585d57059928b63cb7b8d.exe"1⤵
- NTFS ADS
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:844 -
\??\c:\programdata\1321ba6d1f\bdif.exec:\programdata\1321ba6d1f\bdif.exe2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:284 -
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:1428
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cred.dll, Main3⤵
- Suspicious behavior: EnumeratesProcesses
- Blacklisted process makes network request
- Loads dropped DLL
PID:1108
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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:1904
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\scr.dll, Main3⤵
- Blacklisted process makes network request
- Loads dropped DLL
PID:520
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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:1992 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /Create /SC HOURLY /MO 1 /TN a174c1ef10e2077451f5b6dda83242a1 /TR c:\programdata\1321ba6d1f\bdif.exe4⤵
- Creates scheduled task(s)
PID:2000
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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:1988
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