b3d1d98220fa936cf0bc92f3c6afb81adc5672d9631a71ba1af16d2bccc5fd9d

Analysis

max time kernel
140s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 02:49

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General

Target

active.dll
Size

83KB
MD5

8c46879b9861ecd0c23cb377e69c1ccf
SHA1

c54a507bab604709edaa14dd5b6b17422a4424fc
SHA256

c36ff6a9957222a69d876bc27e55c869174c1c9bf7b43758dc36c6de134d4cbe
SHA512

465e0341f538a6c164073f8a8632a7c9d451d98e223e57fd68e25e3a872efeaeb46bdbf66826323c69f5e060c0b3a95aeddfb78ff4e05f0c289c8cc0646c0321
SSDEEP

1536:LVx5ufoijUQpW7erAAGxRO9Ma5hAN2Y+a2jI1m8u0Mv1OElOBF:9uIeL0OimhAN5+aJRd/ElOB

Score

5^/10

discovery upx

Malware Config

Signatures

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral4/memory/5020-0-0x0000000074F60000-0x0000000074F9A000-memory.dmp	upx
behavioral4/memory/5020-2-0x0000000074F60000-0x0000000074F9A000-memory.dmp	upx
behavioral4/memory/5020-3-0x0000000074F60000-0x0000000074F9A000-memory.dmp	upx
behavioral4/memory/5020-15-0x0000000074F60000-0x0000000074F9A000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language\InstallLanguage	rundll32.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 5020	4456	rundll32.exe	82
PID 4456 wrote to memory of 5020	4456	rundll32.exe	82
PID 4456 wrote to memory of 5020	4456	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\active.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\active.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  PID:5020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/5020-0-0x0000000074F60000-0x0000000074F9A000-memory.dmp

Filesize
232KB

Download
memory/5020-1-0x0000000036300000-0x0000000036310000-memory.dmp

Filesize
64KB

Download
memory/5020-2-0x0000000074F60000-0x0000000074F9A000-memory.dmp

Filesize
232KB

Download
memory/5020-3-0x0000000074F60000-0x0000000074F9A000-memory.dmp

Filesize
232KB

Download
memory/5020-15-0x0000000074F60000-0x0000000074F9A000-memory.dmp

Filesize
232KB

Download