Analysis
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max time kernel
90s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2023 14:06
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
4MB
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MD5
e20910b796fc1b4daa210ce625023d7d
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SHA1
56fdaf4f2e7243c35f91e60ff0fb372c027cdd3f
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SHA256
578b32f9bd3b8a0e79585e0160efa88ac127a9d28d3344aa7131061983d2bf0f
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SHA512
c71985abf73be4e21ad426497cc238f2d80f7c76e269694d1ed0893e8eb148ab9b3382843aff5d47e5e8221d9d365fde88b847caca9efb887d99c0fd3edc4657
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SSDEEP
98304:lAzL4t7P7CbM5zD6sILTjblMS0ugkKqRu/to5ZBHfKhBcR8gO:qX4ti4osI3jhMSNUcjHfKhBc1O
Malware Config
Signatures
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
file.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ file.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
file.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion file.exe -
Loads dropped DLL 10 IoCs
Processes:
file.exepid process 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Processes:
resource yara_rule behavioral2/memory/1948-132-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-133-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-134-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-135-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-136-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-138-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-139-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-140-0x0000000000C80000-0x00000000014D3000-memory.dmp themida behavioral2/memory/1948-151-0x0000000000C80000-0x00000000014D3000-memory.dmp themida -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Processes:
file.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 ipinfo.io 5 ipinfo.io -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
file.exepid process 1948 file.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 5004 1948 WerFault.exe file.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
file.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
file.exepid process 1948 file.exe 1948 file.exe 1948 file.exe 1948 file.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 14042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1948 -ip 19481⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\mozglue.dllFilesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\nss3.dllFilesize
1MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\softokn3.dllFilesize
141KB
MD5a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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C:\Users\Admin\AppData\Local\Temp\LocalSimbaYhKFLfhfBoq\softokn3.dllFilesize
141KB
MD5a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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memory/1948-132-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-138-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-136-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-139-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-140-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-137-0x0000000077B20000-0x0000000077CC3000-memory.dmpFilesize
1MB
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memory/1948-135-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-134-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-133-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-151-0x0000000000C80000-0x00000000014D3000-memory.dmpFilesize
8MB
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memory/1948-152-0x0000000077B20000-0x0000000077CC3000-memory.dmpFilesize
1MB