Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
10-06-2023 09:33
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
General
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Target
tmp.exe
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Size
3.4MB
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MD5
50859caa45e9d02823ae55b69fd7b645
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SHA1
aec25ed88cd00fd12a18ca2714d68e33c7fd57c3
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SHA256
8dbebde20f5c4a1c0d29c9faf1c670423f99306042d428c35d6bdd552d3fb554
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SHA512
78df0c4c350b92743f4739855a8f605cf245463dde934edb2b8a26a5d6025231c17b8f0bbe2b9bffa4938343bf84ab88f5539282b6f9fbb78ec836d5a735d767
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SSDEEP
98304:nImo45lwBzz4/B00uUYiGjHMnhNRUQrqXjWJd:nFnG/4/cz4n7RbryS
Malware Config
Extracted
laplas
http://45.159.189.105
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api_key
f52a5c9bc5eb2f51b22f04f3e85c301ac0170a650de6044773f0a8309fbdfb79
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ tmp.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ntlhost.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ntlhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ntlhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion tmp.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion tmp.exe -
Executes dropped EXE 1 IoCs
pid Process 5108 ntlhost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe" tmp.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA tmp.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ntlhost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 372 tmp.exe 5108 ntlhost.exe -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 42 Go-http-client/1.1 -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 372 wrote to memory of 5108 372 tmp.exe 85 PID 372 wrote to memory of 5108 372 tmp.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:372 -
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exeC:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe2⤵
- 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
PID:5108
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
830.4MB
MD5c29194c660057404e1d381f7a18a9275
SHA1306e7458bef397582046f35473b2043510238374
SHA256e1b8dc7dbb405613212bf2ac1868ffdaeb58fd56fa2da4d7746ca2746e678cfa
SHA512bf33b5dd0ae9e337df51389df4b2ee332d18b3293c6a4f4c2e49ea49dfb6b717b1c814436461080e12203ef95063b8f748f95fbbf9fbf09e204d7837e5ac6a94
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Filesize
830.4MB
MD5c29194c660057404e1d381f7a18a9275
SHA1306e7458bef397582046f35473b2043510238374
SHA256e1b8dc7dbb405613212bf2ac1868ffdaeb58fd56fa2da4d7746ca2746e678cfa
SHA512bf33b5dd0ae9e337df51389df4b2ee332d18b3293c6a4f4c2e49ea49dfb6b717b1c814436461080e12203ef95063b8f748f95fbbf9fbf09e204d7837e5ac6a94