fc249baddd791772998825753f2ed6afb5cebab717f2017c5f8c78267173459e

Analysis

max time kernel
840s
max time network
842s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 14:34

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General

Target

samples/session.tmp
Size

32B
MD5

c241eda7e1143981d8cf780be372d33a
SHA1

9ed5184329f8f6c41740b69c5f7404ce4294dd35
SHA256

b5b4a55f7a189862bcb90aeab4abf005a472598f79914b28d1e5a0cda0441b6f
SHA512

19db4988951005449ee72e41646c21b9ffa3a9ab9b6ca8b51a624ffcb668a9456a0747bb5bb7360eeaf85110ede13b263d3e49e0341f0b9a48ed005fff255872

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 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\tmp_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\.tmp	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\.tmp\ = "tmp_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2820	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2820	AcroRd32.exe
2820	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2776	1880	cmd.exe	32
PID 1880 wrote to memory of 2776	1880	cmd.exe	32
PID 1880 wrote to memory of 2776	1880	cmd.exe	32
PID 2776 wrote to memory of 2820	2776	rundll32.exe	33
PID 2776 wrote to memory of 2820	2776	rundll32.exe	33
PID 2776 wrote to memory of 2820	2776	rundll32.exe	33
PID 2776 wrote to memory of 2820	2776	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\samples\session.tmp
1⤵
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\samples\session.tmp
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2776
- - 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\samples\session.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2820

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
de182ed1323cbef11606be9fcac0cd60

SHA1
ee9597f78cbf84f5ec859a977ab890547811b88e

SHA256
40c24bb3f3b1761c9d8fd9151b8569af857b395d38bf8405987119cacca4bb06

SHA512
aa3e4050dc5e52ba017688238f1cee437ad6a87c26a979fa67447657c2a94a3aad8ff676f303f86f6a8e2303e827a13dbf21c9a4f375ffcfad2a43adb0cbf4ff

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