14335e256c1fb53f5581e775bf6910cc70c5c6306e33d54b9b3b1eb645df6ad8

Resubmissions

17-11-2024 22:23

241117-2a4yfazclg 3

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 22:23

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General

Target

KRNL-REBORN/README.md
Size

149B
MD5

c18b6c47951ce8cdcc31b39e7e535726
SHA1

f23c69116a7c43c793f47f72dd2d3856116ea330
SHA256

fde9ed5b5f3cc7318a0c4c25919e36322f96ed6adaa5f1ca775e68d8259d9ae4
SHA512

be4da91dbd657b3c7cd5fee90a33a99120484fd4e065379aef482bfb64d8cd5d637390b7c85a6090143cdaa161d6575d64a8139a6e2b0aed7a773a060548bdcf

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

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	AcroRd32.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2824	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2824	AcroRd32.exe
2824	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2520	2380	cmd.exe	31
PID 2380 wrote to memory of 2520	2380	cmd.exe	31
PID 2380 wrote to memory of 2520	2380	cmd.exe	31
PID 2520 wrote to memory of 2824	2520	rundll32.exe	33
PID 2520 wrote to memory of 2824	2520	rundll32.exe	33
PID 2520 wrote to memory of 2824	2520	rundll32.exe	33
PID 2520 wrote to memory of 2824	2520	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\KRNL-REBORN\README.md
1⤵
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\KRNL-REBORN\README.md
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\KRNL-REBORN\README.md"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
4fb14da0cc6ac750c5eeee5eec867aaf

SHA1
4261c09f1eebab389aa583c8c53eb4efea821859

SHA256
687fad443ab78d051aef7296f390b3a0153c706a87b0ad7172a32247d181f8b8

SHA512
df368f1942e323ff37c272144d7a564709d5e4023f4bac46163a52fb4358d01cd7ccaaf4280316d980832408c13efb4fadc9ad30349334446333e1f677c9fcd2

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