Analysis
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max time kernel
195s -
max time network
216s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
06-12-2022 18:52
Behavioral task
behavioral1
Sample
cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe
Resource
win10v2004-20221111-en
General
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Target
cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe
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Size
33KB
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MD5
1f15706411c0db2c722da2f9d067e040
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SHA1
312aaedc7876b5198a3994759e24aba2bb828039
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SHA256
cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8
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SHA512
54415a4f70f9e79f7b6b739201f1762cbe17e627b82c687217a02f9676b4b09b0ec8b8c4f12d3a27a0e65a06f8ad017cebb6f190ff0fd3b8e84b06747ef72346
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SSDEEP
768:v7w4j2r+0akemBu67GAVS+eULg6RPdmua7iqalEW:vs4jphrmLnVSOk6hdF2QlEW
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 \"C:\\Users\\Admin\\AppData\\Roaming\\33zhjajevze3zaoc12royehlnp1uxvb2\\csrss.exe\"" cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe -
Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Local\Temp\cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe:*:Enabled:ldrsoft" cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe -
resource yara_rule behavioral2/memory/5032-133-0x0000000000400000-0x0000000000663000-memory.dmp upx behavioral2/memory/5032-134-0x0000000000400000-0x0000000000663000-memory.dmp upx behavioral2/memory/5032-135-0x0000000000400000-0x0000000000663000-memory.dmp upx behavioral2/memory/5032-136-0x0000000000400000-0x0000000000663000-memory.dmp upx -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe -
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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Suspicious behavior: RenamesItself 1 IoCs
pid Process 5032 cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe"C:\Users\Admin\AppData\Local\Temp\cf26a2286e3c6e3af6ff851778115d8b43b40aacecbf34ea17a4be49b4101dc8.exe"1⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Checks BIOS information in registry
- Suspicious behavior: RenamesItself
PID:5032