b6977ad0b0332d1466e0843ebef2decc3e2fcc01f8fc62da2d3f2e716a63dc81

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 18:00

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General

Target

Loader.exe
Size

16.8MB
MD5

0107075cd4f1ba34b951c895eacc1285
SHA1

f50404806a62dc04ab129397e30a9cb1d2dbc8db
SHA256

b6977ad0b0332d1466e0843ebef2decc3e2fcc01f8fc62da2d3f2e716a63dc81
SHA512

0ededb1af828e7fd85b3fa38f5f17ba21222c6e0da5a1f46f5328acd379aca9153d9dd5c9da904d1a834d2b5baac2e12017aaa023d93f5b3bf312f19e1540915
SSDEEP

393216:muBhAp43/nfPmZXtCshmXQ3KIpoOwkwbyco/76hikE1cpPFLc5:FspnJh13Zcm76+MPZE

Score

9^/10

evasion execution persistence themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Loader.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Loader.exe
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Drops file in Drivers directory 1 IoCs

Processes:

Loader.exe

description ioc process

File created C:\Windows\System32\drivers\winhb.sys Loader.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Loader.exe

description	ioc	process
File created	C:\Windows\System32\drivers\winhb.sys	Loader.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Loader.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Loader.exe

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2352-0-0x0000000140000000-0x00000001425F1000-memory.dmp	themida
behavioral1/memory/2352-2-0x0000000140000000-0x00000001425F1000-memory.dmp	themida
behavioral1/memory/2352-5-0x0000000140000000-0x00000001425F1000-memory.dmp	themida
behavioral1/memory/2352-4-0x0000000140000000-0x00000001425F1000-memory.dmp	themida
behavioral1/memory/2352-3-0x0000000140000000-0x00000001425F1000-memory.dmp	themida
behavioral1/memory/2352-11-0x0000000140000000-0x00000001425F1000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Loader.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Loader.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Loader.exe

Drops file in System32 directory 6 IoCs

Processes:

Loader.exe

description	ioc	process
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2444}	Loader.exe
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2879}	Loader.exe
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2859}	Loader.exe
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2869}	Loader.exe
File opened for modification	C:\Windows\System32\IME\IMETC\{69CD1F2D-DF68-4E23-9108-1B70783F2879}	Loader.exe
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2899}	Loader.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

Loader.exe

pid process

2352 Loader.exe

Drops file in Windows directory 4 IoCs

Processes:

Loader.exe

description	ioc	process
File opened for modification	C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-UPDATE}	Loader.exe
File opened for modification	C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2893}	Loader.exe
File opened for modification	C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2892}	Loader.exe
File opened for modification	C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2859}	Loader.exe

Launches sc.exe 4 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exesc.exe

pid process

2860 sc.exe
2108 sc.exe
2736 sc.exe
2548 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2860	sc.exe
2108	sc.exe
2736	sc.exe
2548	sc.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

Loader.exe

pid	process
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe
2352	Loader.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

Loader.execmd.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2352 wrote to memory of 2380	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2380	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2380	2352	Loader.exe	cmd.exe
PID 2380 wrote to memory of 2860	2380	cmd.exe	sc.exe
PID 2380 wrote to memory of 2860	2380	cmd.exe	sc.exe
PID 2380 wrote to memory of 2860	2380	cmd.exe	sc.exe
PID 2352 wrote to memory of 2116	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2116	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2116	2352	Loader.exe	cmd.exe
PID 2116 wrote to memory of 2108	2116	cmd.exe	sc.exe
PID 2116 wrote to memory of 2108	2116	cmd.exe	sc.exe
PID 2116 wrote to memory of 2108	2116	cmd.exe	sc.exe
PID 2352 wrote to memory of 1996	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 1996	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 1996	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2696	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2696	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2696	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2724	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2724	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2724	2352	Loader.exe	cmd.exe
PID 2696 wrote to memory of 2736	2696	cmd.exe	sc.exe
PID 2696 wrote to memory of 2736	2696	cmd.exe	sc.exe
PID 2696 wrote to memory of 2736	2696	cmd.exe	sc.exe
PID 2352 wrote to memory of 2560	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2560	2352	Loader.exe	cmd.exe
PID 2352 wrote to memory of 2560	2352	Loader.exe	cmd.exe
PID 2560 wrote to memory of 2440	2560	cmd.exe	certutil.exe
PID 2560 wrote to memory of 2440	2560	cmd.exe	certutil.exe
PID 2560 wrote to memory of 2440	2560	cmd.exe	certutil.exe
PID 2560 wrote to memory of 2156	2560	cmd.exe	find.exe
PID 2560 wrote to memory of 2156	2560	cmd.exe	find.exe
PID 2560 wrote to memory of 2156	2560	cmd.exe	find.exe
PID 2560 wrote to memory of 2872	2560	cmd.exe	find.exe
PID 2560 wrote to memory of 2872	2560	cmd.exe	find.exe
PID 2560 wrote to memory of 2872	2560	cmd.exe	find.exe
PID 2724 wrote to memory of 2548	2724	cmd.exe	sc.exe
PID 2724 wrote to memory of 2548	2724	cmd.exe	sc.exe
PID 2724 wrote to memory of 2548	2724	cmd.exe	sc.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Drops file in Drivers directory
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2352

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
2⤵
- Suspicious use of WriteProcessMemory
PID:2380

C:\Windows\system32\sc.exe
sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
3⤵
- Launches sc.exe
PID:2860

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc start windowsproc
2⤵
- Suspicious use of WriteProcessMemory
PID:2116

C:\Windows\system32\sc.exe
sc start windowsproc
3⤵
- Launches sc.exe
PID:2108

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c cls
2⤵
PID:1996

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
2⤵
- Suspicious use of WriteProcessMemory
PID:2696

C:\Windows\system32\sc.exe
sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
3⤵
- Launches sc.exe
PID:2736

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C sc start windowsproc
2⤵
- Suspicious use of WriteProcessMemory
PID:2724

C:\Windows\system32\sc.exe
sc start windowsproc
3⤵
- Launches sc.exe
PID:2548

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
2⤵
- Suspicious use of WriteProcessMemory
PID:2560

C:\Windows\system32\certutil.exe
certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5
3⤵
PID:2440

C:\Windows\system32\find.exe
find /i /v "md5"
3⤵
PID:2156

C:\Windows\system32\find.exe
find /i /v "certutil"
3⤵
PID:2872

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

memory/2352-1-0x0000000077C10000-0x0000000077C12000-memory.dmp

Filesize
8KB

Download
memory/2352-0-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download
memory/2352-2-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download
memory/2352-5-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download
memory/2352-4-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download
memory/2352-3-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download
memory/2352-11-0x0000000140000000-0x00000001425F1000-memory.dmp

Filesize
37.9MB

Download