Analysis
- max time kernel
137s - max time network
147s - platform
windows7_x64 - resource
win7 - submitted
05/08/2020, 14:03
Static task
static1
Behavioral task
behavioral1
Sample
034572d8a597e2758e8a97021d817b20.exe
Resource
win7
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
034572d8a597e2758e8a97021d817b20.exe
Resource
win10
windows10_x64
0 signatures
0 seconds
General
- Target 034572d8a597e2758e8a97021d817b20.exe
- Size 1.3MB
- Sample200805-ejdgz8kn5j
- SHA256 f4ab217ae09b0a6d32aae4fcdc87f64a79caa98619487724d6e52a75bcaddd26
- MD5 034572d8a597e2758e8a97021d817b20
- SHA1 dd10b0e77b4d6b40c82cc955128155dcb8b725f0
- SHA512 a29ff89e47531f70c64206ad0374229b4a3013b99b1815b7c681576b5c096aafba66ec938c78d46e590e612220fee407bd9a9f84a2628ee18115a7bc218d77ef
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 1088 wrote to memory of 1204 1088 034572d8a597e2758e8a97021d817b20.exe 24 PID 1088 wrote to memory of 1204 1088 034572d8a597e2758e8a97021d817b20.exe 24 PID 1088 wrote to memory of 1204 1088 034572d8a597e2758e8a97021d817b20.exe 24 PID 1088 wrote to memory of 1204 1088 034572d8a597e2758e8a97021d817b20.exe 24 PID 1204 wrote to memory of 1028 1204 bdif.exe 27 PID 1204 wrote to memory of 1028 1204 bdif.exe 27 PID 1204 wrote to memory of 1028 1204 bdif.exe 27 PID 1204 wrote to memory of 1028 1204 bdif.exe 27 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1036 1204 bdif.exe 28 PID 1204 wrote to memory of 1796 1204 bdif.exe 30 PID 1204 wrote to memory of 1796 1204 bdif.exe 30 PID 1204 wrote to memory of 1796 1204 bdif.exe 30 PID 1204 wrote to memory of 1796 1204 bdif.exe 30 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1380 1204 bdif.exe 31 PID 1204 wrote to memory of 1608 1204 bdif.exe 33 PID 1204 wrote to memory of 1608 1204 bdif.exe 33 PID 1204 wrote to memory of 1608 1204 bdif.exe 33 PID 1204 wrote to memory of 1608 1204 bdif.exe 33 PID 1204 wrote to memory of 1536 1204 bdif.exe 34 PID 1204 wrote to memory of 1536 1204 bdif.exe 34 PID 1204 wrote to memory of 1536 1204 bdif.exe 34 PID 1204 wrote to memory of 1536 1204 bdif.exe 34 PID 1608 wrote to memory of 1864 1608 cmd.exe 37 PID 1608 wrote to memory of 1864 1608 cmd.exe 37 PID 1608 wrote to memory of 1864 1608 cmd.exe 37 PID 1608 wrote to memory of 1864 1608 cmd.exe 37 - Executes dropped EXE 1 IoCs
pid Process 1204 bdif.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1036 rundll32.exe 1036 rundll32.exe - Blacklisted process makes network request 2 IoCs
flow pid Process 5 1036 rundll32.exe 9 1380 rundll32.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 1864 schtasks.exe - NTFS ADS 1 IoCs
description ioc Process File created \??\c:\programdata\1321ba6d1f\bdif.exe:Zone.Identifier 034572d8a597e2758e8a97021d817b20.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\cred = "rundll32 C:\\Users\\Admin\\AppData\\Local\\Temp\\cred.dll, Main" REG.exe Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run REG.exe Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\scr = "rundll32 C:\\Users\\Admin\\AppData\\Local\\Temp\\scr.dll, Main" REG.exe Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run REG.exe - Loads dropped DLL 10 IoCs
pid Process 1088 034572d8a597e2758e8a97021d817b20.exe 1088 034572d8a597e2758e8a97021d817b20.exe 1036 rundll32.exe 1036 rundll32.exe 1036 rundll32.exe 1036 rundll32.exe 1380 rundll32.exe 1380 rundll32.exe 1380 rundll32.exe 1380 rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\034572d8a597e2758e8a97021d817b20.exe"C:\Users\Admin\AppData\Local\Temp\034572d8a597e2758e8a97021d817b20.exe"1⤵
- Suspicious use of WriteProcessMemory
- NTFS ADS
- Loads dropped DLL
PID:1088 -
\??\c:\programdata\1321ba6d1f\bdif.exec:\programdata\1321ba6d1f\bdif.exe2⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1204 -
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:1028
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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:1036
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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:1796
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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:1380
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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:1608 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /Create /SC HOURLY /MO 1 /TN a174c1ef10e2077451f5b6dda83242a1 /TR c:\programdata\1321ba6d1f\bdif.exe4⤵
- Creates scheduled task(s)
PID:1864
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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:1536
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