82e560a078cd7bb4472d5af832a04c4bc8f1001bac97b1574efe9863d3f66550

Resubmissions

21-02-2024 19:59

240221-yqmsbafb69 10

27-02-2023 15:10

230227-sj843seb89 1

27-06-2021 20:55

210627-2nsmat5hex 10

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 19:59

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General

Target

e_nas_x86.out
Size

2.0MB
MD5

1453c8123be53bf4458b1a8e7e54ddbb
SHA1

a1064f1393e4d548c27f1a4b5fb1a5cf9f5267e7
SHA256

e505b24de50b14aed35cf40725dc0185cab06fed90269d445ec7a4b36de124b6
SHA512

2eeffbcf1b8161f3f61a5654213004212042ca95b87393052a54b0a28416ee82eef113891488cc272581d6c2a557b1283712f8658ad48c219823b204724bc150
SSDEEP

49152:Tx8AK8iCuL2j/WU1jMEYaCQ4esXSdq8J3:t87Rc5CQ4eXdqS

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.out	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.out\ = "out_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\out_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2804	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2804	AcroRd32.exe
2804	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2652	2696	cmd.exe	29
PID 2696 wrote to memory of 2652	2696	cmd.exe	29
PID 2696 wrote to memory of 2652	2696	cmd.exe	29
PID 2652 wrote to memory of 2804	2652	rundll32.exe	30
PID 2652 wrote to memory of 2804	2652	rundll32.exe	30
PID 2652 wrote to memory of 2804	2652	rundll32.exe	30
PID 2652 wrote to memory of 2804	2652	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\e_nas_x86.out
1⤵
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\e_nas_x86.out
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2652
- - 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\e_nas_x86.out"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
0e26b0fb681182de8efbd7cfa73632f3

SHA1
c0b43a2df9aa0bb44ceade70ae8fee932a3b2f4b

SHA256
374f69b43cd804d4f19e335b9fd78f265cc626c519d5ce204a4a0a2dcc1e7d1f

SHA512
d50b67ff9c84208c701259b4ace3d44a28508562a12c349c1173616055f238b206a175917c28fc3d24f15de8500d2844553ce4124df627ef961ab49c942107d9

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