Analysis
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max time kernel
191s -
max time network
195s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
11/10/2022, 14:57
Behavioral task
behavioral1
Sample
a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe
Resource
win7-20220812-en
windows7-x64
17 signatures
150 seconds
Behavioral task
behavioral2
Sample
a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
12 signatures
150 seconds
General
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Target
a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe
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Size
248KB
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MD5
111bb403113bf27e48e84bc66fab0a41
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SHA1
ab8510318775ea9a4ccf47a3d6fc85ff880bbc0e
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SHA256
a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609
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SHA512
389336aca1d7f23a349905a33b2090943f309a814bb83c324dc7cafed1fb4f12d0201818c22d85affb1368d3ef5cb8d803dd10ecae0373f9a9b14ef3aaae2a0d
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SSDEEP
6144:1uMJWY+qaHEQCcYfSBYJbQCjRcqESEgm6Anhc1kG6EmRzxH:1+YcUc6SBLLTSEgBAnhc1kGsxH
Score
10/10
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe NOTEPAD1.exe" a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Disables Task Manager via registry modification
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resource yara_rule behavioral2/memory/4360-132-0x0000000000400000-0x000000000049D000-memory.dmp upx behavioral2/memory/4360-135-0x0000000000400000-0x000000000049D000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Yahoo Messengger = "C:\\Windows\\system32\\NOTEPAD1.exe" a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\g: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\j: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\r: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\t: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\w: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\x: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\f: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\i: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\k: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\n: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\o: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\v: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\z: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\e: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\h: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\m: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\q: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\s: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\u: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\a: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\b: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\l: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\p: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened (read-only) \??\y: a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/memory/4360-135-0x0000000000400000-0x000000000049D000-memory.dmp autoit_exe -
Drops file in System32 directory 5 IoCs
description ioc Process File created C:\Windows\SysWOW64\NOTEPAD1.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened for modification C:\Windows\SysWOW64\NOTEPAD1.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File created C:\Windows\SysWOW64\WORD.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened for modification C:\Windows\SysWOW64\WORD.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened for modification C:\Windows\SysWOW64\autorun.ini a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\NOTEPAD1.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe File opened for modification C:\Windows\NOTEPAD1.exe a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 26 IoCs
pid Process 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4360 wrote to memory of 1724 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 81 PID 4360 wrote to memory of 1724 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 81 PID 4360 wrote to memory of 1724 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 81 PID 1724 wrote to memory of 2144 1724 cmd.exe 83 PID 1724 wrote to memory of 2144 1724 cmd.exe 83 PID 1724 wrote to memory of 2144 1724 cmd.exe 83 PID 4360 wrote to memory of 1480 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 84 PID 4360 wrote to memory of 1480 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 84 PID 4360 wrote to memory of 1480 4360 a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe 84 PID 1480 wrote to memory of 4836 1480 cmd.exe 86 PID 1480 wrote to memory of 4836 1480 cmd.exe 86 PID 1480 wrote to memory of 4836 1480 cmd.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe"C:\Users\Admin\AppData\Local\Temp\a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe"1⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4360 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /C AT /delete /yes2⤵
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Windows\SysWOW64\at.exeAT /delete /yes3⤵PID:2144
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\WORD.exe2⤵
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Windows\SysWOW64\at.exeAT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\WORD.exe3⤵PID:4836
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