Analysis
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max time kernel
151s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
07-05-2024 13:32
Behavioral task
behavioral1
Sample
a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe
Resource
win10v2004-20240419-en
General
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Target
a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe
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Size
2.6MB
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MD5
a391f0b4b19ea7189df5320bb2c44f30
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SHA1
078c1836a49bed9672f999aa31a4409730e8872e
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SHA256
684ff6aeffa333f9f2f55ca6bede9d52c72a8536a725ed78045d7eff7c1413a2
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SHA512
af7dd79a90bdf989728b8ef0cbccec9757d96a51258709d0dc9b1615d7f1006b9a85166069e629b393db1e4948d08ec9d7d41d8bcb37e0bd17110ef6ebaf3d50
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SSDEEP
49152:XXzhpDtKSK1cb8PGK+Tfuqmpc3elWo8GnQAsYZEVL:XXzhW148Pd+Tf1mpcOldJQ3/VL
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ spoolsv.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ svchost.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ spoolsv.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorer.exe -
Checks BIOS information in registry 2 TTPs 10 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion spoolsv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorer.exe -
Executes dropped EXE 4 IoCs
pid Process 2552 explorer.exe 2508 spoolsv.exe 2372 svchost.exe 2748 spoolsv.exe -
Loads dropped DLL 4 IoCs
pid Process 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2552 explorer.exe 2508 spoolsv.exe 2372 svchost.exe -
resource yara_rule behavioral1/memory/2892-0-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/files/0x002d000000014b6d-7.dat themida behavioral1/memory/2552-12-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2508-24-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/files/0x0009000000015364-22.dat themida behavioral1/files/0x0009000000015364-28.dat themida behavioral1/files/0x00080000000155d9-31.dat themida behavioral1/memory/2892-35-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2372-36-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2748-44-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2892-51-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2508-50-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2748-48-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2552-52-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2552-54-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2372-55-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2552-67-0x0000000000400000-0x0000000000A16000-memory.dmp themida behavioral1/memory/2372-74-0x0000000000400000-0x0000000000A16000-memory.dmp themida -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" svchost.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA explorer.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA spoolsv.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svchost.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA spoolsv.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\explorer.exe explorer.exe File opened for modification C:\Windows\SysWOW64\explorer.exe svchost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2552 explorer.exe 2508 spoolsv.exe 2372 svchost.exe 2748 spoolsv.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification \??\c:\windows\resources\themes\explorer.exe a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe File opened for modification \??\c:\windows\resources\spoolsv.exe explorer.exe File opened for modification \??\c:\windows\resources\svchost.exe spoolsv.exe File opened for modification C:\Windows\Resources\tjud.exe explorer.exe -
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2484 schtasks.exe 2692 schtasks.exe 1096 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2372 svchost.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2552 explorer.exe 2372 svchost.exe 2372 svchost.exe 2552 explorer.exe 2372 svchost.exe 2552 explorer.exe 2372 svchost.exe 2552 explorer.exe 2372 svchost.exe 2552 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2552 explorer.exe 2372 svchost.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 2552 explorer.exe 2552 explorer.exe 2508 spoolsv.exe 2508 spoolsv.exe 2372 svchost.exe 2372 svchost.exe 2748 spoolsv.exe 2748 spoolsv.exe -
Suspicious use of WriteProcessMemory 32 IoCs
description pid Process procid_target PID 2892 wrote to memory of 2552 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 28 PID 2892 wrote to memory of 2552 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 28 PID 2892 wrote to memory of 2552 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 28 PID 2892 wrote to memory of 2552 2892 a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe 28 PID 2552 wrote to memory of 2508 2552 explorer.exe 29 PID 2552 wrote to memory of 2508 2552 explorer.exe 29 PID 2552 wrote to memory of 2508 2552 explorer.exe 29 PID 2552 wrote to memory of 2508 2552 explorer.exe 29 PID 2508 wrote to memory of 2372 2508 spoolsv.exe 30 PID 2508 wrote to memory of 2372 2508 spoolsv.exe 30 PID 2508 wrote to memory of 2372 2508 spoolsv.exe 30 PID 2508 wrote to memory of 2372 2508 spoolsv.exe 30 PID 2372 wrote to memory of 2748 2372 svchost.exe 31 PID 2372 wrote to memory of 2748 2372 svchost.exe 31 PID 2372 wrote to memory of 2748 2372 svchost.exe 31 PID 2372 wrote to memory of 2748 2372 svchost.exe 31 PID 2552 wrote to memory of 2420 2552 explorer.exe 32 PID 2552 wrote to memory of 2420 2552 explorer.exe 32 PID 2552 wrote to memory of 2420 2552 explorer.exe 32 PID 2552 wrote to memory of 2420 2552 explorer.exe 32 PID 2372 wrote to memory of 2484 2372 svchost.exe 33 PID 2372 wrote to memory of 2484 2372 svchost.exe 33 PID 2372 wrote to memory of 2484 2372 svchost.exe 33 PID 2372 wrote to memory of 2484 2372 svchost.exe 33 PID 2372 wrote to memory of 2692 2372 svchost.exe 38 PID 2372 wrote to memory of 2692 2372 svchost.exe 38 PID 2372 wrote to memory of 2692 2372 svchost.exe 38 PID 2372 wrote to memory of 2692 2372 svchost.exe 38 PID 2372 wrote to memory of 1096 2372 svchost.exe 40 PID 2372 wrote to memory of 1096 2372 svchost.exe 40 PID 2372 wrote to memory of 1096 2372 svchost.exe 40 PID 2372 wrote to memory of 1096 2372 svchost.exe 40
Processes
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C:\Users\Admin\AppData\Local\Temp\a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe"C:\Users\Admin\AppData\Local\Temp\a391f0b4b19ea7189df5320bb2c44f30_NEAS.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2892 -
\??\c:\windows\resources\themes\explorer.exec:\windows\resources\themes\explorer.exe2⤵
- Modifies visiblity of hidden/system files in Explorer
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2552 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe SE3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2508 -
\??\c:\windows\resources\svchost.exec:\windows\resources\svchost.exe4⤵
- Modifies visiblity of hidden/system files in Explorer
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2372 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe PR5⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
PID:2748
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 13:34 /f5⤵
- Creates scheduled task(s)
PID:2484
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 13:35 /f5⤵
- Creates scheduled task(s)
PID:2692
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 13:36 /f5⤵
- Creates scheduled task(s)
PID:1096
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe3⤵PID:2420
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
192KB
MD5a893beab99b5154772370df91db65d19
SHA19da60fb24ebf6002e4567db50ebd9b5b6d83743c
SHA2568751da2ff37c9a49d8faa09abbc7f3ab6155e34d749ed5c902d110a234f5b7ae
SHA512493db120f6e3bd73a253a72021a272cb099d3b5b252972c66397f946725f1d902309a6a50b0316af150b00db8f23c135644d3d82420a8f20e4e2aa4c900ad412
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Filesize
576KB
MD5a986a37627285181bdf3a69ba2282bfe
SHA11bdf5e5ee67b73593a353a6e7ff7bc59992ba57a
SHA256d9d13c39eba409501b4240d1fc55a3913bf950685382c88b990893c6a4a15122
SHA5123ca4bf6a3dff74a4c826ddb5e1faf9979c5d4d81e895f734312796b7f5f789fe51194b9921bbca90fc76db7745fcdc7b1ae7a83b3d13e784b24b6340fc619b31
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Filesize
448KB
MD5df2a4c9e3399c519f3bfcd5716c08ab5
SHA1fd9c8ede36c915e85ac867faa9bcafe88e47c7cf
SHA256c1f6f6fb063d7faad12cc88d549c9b8ba794309ce13d502c90f128dfb5151a1b
SHA512eb8c1992a75e489d5858b74b27c9e60f2b482f13297fbfe7d05ccc3adc5ac29be225e95af987c617eeee244dfcf00eb9abbbab3e52aa3f5403da65135915b7c1
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Filesize
128KB
MD50bf7ebea6caddda3c342b14a2d89a594
SHA19e776088a1ab7ef936f2162361cf3229f2a264f0
SHA256d2d9e27955c91bab2c9411113c134fc56153da7a8c1d66858a0dac6ff9abdfbd
SHA512227048ed93e257b1a47c31f36d88d3e0aa44a25fb253421c1760b2ed217c7594a130a6c7bd8cc1480db6852ff607d14b8aae3ab3937d5cc6b56c72a8e0778d17