cd8dbe3ba03d6ea5661f07c1e173d4ea37a5b2e04385527355f03e304a7203d6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 15:29

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General

Target

ConnectUI.dll
Size

367KB
MD5

149e5d57ebc67c7f6e32cfd4d37771ab
SHA1

96a753a15fa457bb1e0916a57a0b1176c69460d6
SHA256

9e058a1347d4b4550f9ee2ebb2521745fac1a146f7eb5d0117c980aa54be38eb
SHA512

69c9b3403bae0455050c36734983e9139a8cb4fe77b3f3a095e15fe3a5d188c50400ef048d37c2f9ade1013c265ff8d23adb3106de8ed8f15d8ee44f7d41a059
SSDEEP

6144:T75cHdfFpN5x92VXr/raw11i+w0D5Qm16qDEOnA/IZu:TMd55gzfi+bDim1duIZu

Score

8^/10

discovery

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
20	4236	rundll32.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2524	4236	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 1 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

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\~MHz	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 4236	1608	rundll32.exe	84
PID 1608 wrote to memory of 4236	1608	rundll32.exe	84
PID 1608 wrote to memory of 4236	1608	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ConnectUI.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ConnectUI.dll,#1
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  PID:4236
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4236 -s 1492
    3⤵
    - Program crash
    PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4236 -ip 4236
1⤵
PID:4868

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/4236-0-0x0000000003530000-0x0000000003531000-memory.dmp

Filesize
4KB

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