1a4b5d8c8adf2cac325be642c101f223102145b818546d497d71390104b180c7

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2024 14:28

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General

Target

simityvp.exe
Size

2.6MB
MD5

7acd70f3dfdcd33dbe40603e939fcb79
SHA1

d7f63d7b0a37b3d78d13e8ea783e0aba6507aa20
SHA256

069539fb82534ac72239b2f35f4711cd4ac828d26ab29e159c1082f725b9999d
SHA512

4ef930ac69b82f078084212d6e57ea0522568452aca5e35de3a0b85a99a9dae6209fcd394582ea64ac8d45e9708dffefada5d267254332bfa62da780d968cefc
SSDEEP

49152:opjm0WOyUeKHY274eWPaAZOdZ8o5DnWCHZc2w94K0TAA5N:4jm0W24H/YdZ8AE2wOKODN

Score

9^/10

discovery evasion 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:

simityvp.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ simityvp.exe
Blocklisted process makes network request 2 IoCs

Processes:

WScript.exe

flow pid process

24 4272 WScript.exe
26 4272 WScript.exe

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

flow	pid	process
24	4272	WScript.exe
26	4272	WScript.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:

simityvp.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

simityvp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	simityvp.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral20/memory/2912-0-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-3-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-2-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-4-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-5-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-10-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida
behavioral20/memory/2912-21-0x0000000000FD0000-0x0000000001699000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

simityvp.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA simityvp.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

23 iplogger.org
24 iplogger.org
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

5 ip-api.com
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

simityvp.exe

pid process

2912 simityvp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

flow	ioc
23	iplogger.org
24	iplogger.org

flow	ioc
5	ip-api.com

pid	process
2912	simityvp.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

simityvp.exeWScript.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	simityvp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

simityvp.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	simityvp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	simityvp.exe

Modifies registry class 1 IoCs

Processes:

simityvp.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings simityvp.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

simityvp.exe

pid process

2912 simityvp.exe
2912 simityvp.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	simityvp.exe

pid	process
2912	simityvp.exe
2912	simityvp.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

simityvp.exe

description	pid	process	target process
PID 2912 wrote to memory of 4272	2912	simityvp.exe	WScript.exe
PID 2912 wrote to memory of 4272	2912	simityvp.exe	WScript.exe
PID 2912 wrote to memory of 4272	2912	simityvp.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\simityvp.exe
"C:\Users\Admin\AppData\Local\Temp\simityvp.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vjjsvstlnn.vbs"
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  PID:4272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\98C6.tmp

Filesize
291B

MD5
c085beeb6f771b90fed94c1d940f97f6

SHA1
44a994d9175d6abaa9a3b5718e242fa659aed66a

SHA256
ff5681f440a7a4b019a4a59f43ad414393321d1eb6dc3874cea0a84e73a83c51

SHA512
9d000581b287cd3d5464c33c260008090369a4f5f380b7cfa72eb0fc3221ce0e07df0387f6d3d6b38253c215250ac873dec0f52c501e3d6312f0a5437723a76a

Download Submit
C:\Users\Admin\AppData\Local\Temp\vjjsvstlnn.vbs

Filesize
133B

MD5
42e93ba370e65d66afe4dd79ebf9a2da

SHA1
3919d4c9ae2a7ae15d7053303c52d7b8154e2eeb

SHA256
35b04c321a031d27a4c812567ef175ce2b02668c99171749224df0126aacdae1

SHA512
1ea1856b79f93e0348d758aa1f7e5c07fa848d3699c23d98c3d937b6ce1db25de6dc4a805a0ee7533f4d0af401e4cd9e9a0e9a7489c765ef9300ba1628c56050

Download Submit
memory/2912-0-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-1-0x00000000779C4000-0x00000000779C6000-memory.dmp

Filesize
8KB

Download
memory/2912-3-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-2-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-4-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-5-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-10-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download
memory/2912-21-0x0000000000FD0000-0x0000000001699000-memory.dmp

Filesize
6.8MB

Download