4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a

General

Target

4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
Size

3.1MB
MD5

36538f9861e330d5ac9310418f615bf9
SHA1

ab32322f5094133b4f75ab10d63a3705cb2064c8
SHA256

4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a
SHA512

9c79444bea20258e71e782ebbdeceb71547f5be54764088f6aba0a0062fce3f8277546bd2f294ae040804196a8e41e99d057449f73d4cbfc4d0213eaa12bdb68
SSDEEP

49152:8DOm/UnwYvirEus6NRwMwyfaQb+Tch+kmqk2ls0Oz4HoJ1c0TrBO8THK6aLhlLFq:8xUwiijeMLfRb+Tirdkt0O8Hybrj6HH

Score

9^/10

evasion persistence trojan

Malware Config

Signatures

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ntlhost.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ntlhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ntlhost.exe

Executes dropped EXE 1 IoCs

pid	Process
236	ntlhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe"	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ntlhost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4148	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
236	ntlhost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 236	4148	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe	81
PID 4148 wrote to memory of 236	4148	4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe	81

C:\Users\Admin\AppData\Local\Temp\4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe
"C:\Users\Admin\AppData\Local\Temp\4b849d412245437a6185de355d24799911f08df34a5c77e265c6b7222e84337a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
  C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:236

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

Filesize
723.1MB

MD5
e7284ed74fbeb0faa1a85688628319bc

SHA1
1f9e69330c8cb7a241b383d6bc94c8695c251b6a

SHA256
fc4fe3da1c9b916e1f55f36c4d15e74f7ba2c490b888da228b38c6aec612cdb2

SHA512
04c1f79b7ee6cfab5418f7d3d59a746886b1968397549dd53bcb1465275a5263ed8fb69fdb7d023c480f30b0b14222555838b79d48fc21335ce627fb671d2956

Download Submit
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

Filesize
723.1MB

MD5
e7284ed74fbeb0faa1a85688628319bc

SHA1
1f9e69330c8cb7a241b383d6bc94c8695c251b6a

SHA256
fc4fe3da1c9b916e1f55f36c4d15e74f7ba2c490b888da228b38c6aec612cdb2

SHA512
04c1f79b7ee6cfab5418f7d3d59a746886b1968397549dd53bcb1465275a5263ed8fb69fdb7d023c480f30b0b14222555838b79d48fc21335ce627fb671d2956

Download Submit
memory/236-155-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-158-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-169-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-168-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-151-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-167-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-161-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-153-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-159-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-157-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-156-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/236-154-0x0000000000F10000-0x00000000017F0000-memory.dmp

Filesize
8.9MB

Download
memory/4148-135-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-139-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-143-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-134-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-133-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-137-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-146-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-141-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-144-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-136-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-140-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-138-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download
memory/4148-149-0x00000000001B0000-0x0000000000A90000-memory.dmp

Filesize
8.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads