b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821

General

Target
b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
Size 569KB
Sample201113-fbbeqk14h2
SHA256 b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821
MD5 66cf0d4e1f5bcba3d37e4a13b8601d92
SHA1 5da09dfc283327b4cb0a32dc0f0a9730a8c923f5
SHA512 e8511c889767493cc48687c9f5822952523abefc97a4e2b3389a8b98b0353e3f65c67df87ad41342007237f7d46e40df32484bc3ca48b543002ecbce275cff9a
MD5 SHA1 SHA512

Score

9^/10

evasion

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 744 set thread context of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task

pid	Process
1556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1724	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
1724	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 1556	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	30
PID 744 wrote to memory of 1556	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	30
PID 744 wrote to memory of 1556	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	30
PID 744 wrote to memory of 1556	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	30
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32
PID 744 wrote to memory of 1724	744	b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe	32

C:\Users\Admin\AppData\Local\Temp\b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
"C:\Users\Admin\AppData\Local\Temp\b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:744
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EaUtTS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2B16.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1556
- C:\Users\Admin\AppData\Local\Temp\b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe
  "C:\Users\Admin\AppData\Local\Temp\b9cdbda14ecde37f1914367130d2aecfd55485dddda99878de9702d53817e821.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1724