Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
07/01/2024, 11:19
Behavioral task
behavioral1
Sample
48d4b2de96bdee80e4b03ce3b1c2cbf7.exe
Resource
win7-20231215-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
48d4b2de96bdee80e4b03ce3b1c2cbf7.exe
Resource
win10v2004-20231215-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
48d4b2de96bdee80e4b03ce3b1c2cbf7.exe
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Size
563KB
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MD5
48d4b2de96bdee80e4b03ce3b1c2cbf7
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SHA1
d573c037b7130c2f9fd066290cb33517f872b10a
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SHA256
55fee448c01f7f95dac6e0659817bd2cd6d9b10faa1996e80d13fd7eff3b7eba
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SHA512
e48af35745638ee4153d4fd2d295f0215c1bf7f46af9a59e4e4b920498828456dec77fee796ced0202ffcd495f1ccf14a6f7500c1f64f6365d3613d1ce505640
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SSDEEP
12288:McEV8Z4J+3C3Ojt1cEVncEV8Z4J+3C3Ojtnvt:mxJV+BVPxJV+Bnvt
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 SCVHOST.exe" 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Disables Task Manager via registry modification
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resource yara_rule behavioral2/memory/2072-0-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/files/0x0008000000023221-5.dat upx behavioral2/memory/2072-43-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-44-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-45-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-46-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-47-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-48-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-49-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-50-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-51-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-52-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-53-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-54-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-55-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-56-0x0000000000400000-0x0000000000496000-memory.dmp upx behavioral2/memory/2072-57-0x0000000000400000-0x0000000000496000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Yahoo Messengger = "C:\\Windows\\system32\\SCVHOST.exe" 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\s: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\b: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\n: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\o: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\p: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\t: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\a: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\h: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\k: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\r: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\u: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\x: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\y: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\e: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\m: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\q: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\l: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\v: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\w: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\z: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\g: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\i: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened (read-only) \??\j: 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File created C:\Windows\SysWOW64\setting.ini 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened for modification C:\Windows\SysWOW64\setting.ini 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File created C:\Windows\SysWOW64\SCVHOST.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened for modification C:\Windows\SysWOW64\SCVHOST.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File created C:\Windows\SysWOW64\blastclnnn.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened for modification C:\Windows\SysWOW64\blastclnnn.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened for modification C:\Windows\SysWOW64\autorun.ini 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\SCVHOST.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe File opened for modification C:\Windows\SCVHOST.exe 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2072 wrote to memory of 3656 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 91 PID 2072 wrote to memory of 3656 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 91 PID 2072 wrote to memory of 3656 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 91 PID 3656 wrote to memory of 2660 3656 cmd.exe 93 PID 3656 wrote to memory of 2660 3656 cmd.exe 93 PID 3656 wrote to memory of 2660 3656 cmd.exe 93 PID 2072 wrote to memory of 548 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 94 PID 2072 wrote to memory of 548 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 94 PID 2072 wrote to memory of 548 2072 48d4b2de96bdee80e4b03ce3b1c2cbf7.exe 94 PID 548 wrote to memory of 1880 548 cmd.exe 96 PID 548 wrote to memory of 1880 548 cmd.exe 96 PID 548 wrote to memory of 1880 548 cmd.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\48d4b2de96bdee80e4b03ce3b1c2cbf7.exe"C:\Users\Admin\AppData\Local\Temp\48d4b2de96bdee80e4b03ce3b1c2cbf7.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:2072 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /C AT /delete /yes2⤵
- Suspicious use of WriteProcessMemory
PID:3656 -
C:\Windows\SysWOW64\at.exeAT /delete /yes3⤵PID:2660
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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\blastclnnn.exe2⤵
- Suspicious use of WriteProcessMemory
PID:548 -
C:\Windows\SysWOW64\at.exeAT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\blastclnnn.exe3⤵PID:1880
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
563KB
MD548d4b2de96bdee80e4b03ce3b1c2cbf7
SHA1d573c037b7130c2f9fd066290cb33517f872b10a
SHA25655fee448c01f7f95dac6e0659817bd2cd6d9b10faa1996e80d13fd7eff3b7eba
SHA512e48af35745638ee4153d4fd2d295f0215c1bf7f46af9a59e4e4b920498828456dec77fee796ced0202ffcd495f1ccf14a6f7500c1f64f6365d3613d1ce505640
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Filesize
277KB
MD5f5eeef61ada2d27fb5fef730e8affabb
SHA1e2990dbcbca8a32cdc1e5745b02b6a1b63785705
SHA256d7b516e1f3aef78adc7ae9f0e41cbc95353b88807a349d88cb2002d555a8533b
SHA51257daf57782e2945e8ca6e0c8a4e161d6a2bf4195f72e15e7df0064b6df7fabaea9e614520d25ec182130f4c90b4e5a2382918105a980d0b59c350a6fddfec41e