b8f925e583f322b25392ce1adb1387982f3263ea03e7b4ad82b707a5f11bab58

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-09-2024 09:09

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General

Target

$PROGRAMFILES/staalarbejders/Telefonbger.knu
Size

52KB
MD5

5044e84bc1ae30a8ab16fc6211ceb5ff
SHA1

0668bfbb7c58a9b787ab2a1e174d99db070dcd7a
SHA256

a5e07e1ed61b4a6b6378610f6c8c5a46c61f713d1bb041aeba18ee044056b5a6
SHA512

2a757b88c4794712db072966366b1122fe19317a20986f543b14fb5fcc956faa83e5079f71057a2cf7a591abd1897799e0d90b5bab21be5f28878607596e164e
SSDEEP

1536:YCuvtDh6dKLvRFfRW65RfIPZ9on8MPbqpR:YCuNh6GvXJlQXAqpR

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-1-5-21-3063565911-2056067323-3330884624-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\.knu\ = "knu_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\.knu	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\knu_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2520	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2520	AcroRd32.exe
2520	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2724	2736	cmd.exe	29
PID 2736 wrote to memory of 2724	2736	cmd.exe	29
PID 2736 wrote to memory of 2724	2736	cmd.exe	29
PID 2724 wrote to memory of 2520	2724	rundll32.exe	30
PID 2724 wrote to memory of 2520	2724	rundll32.exe	30
PID 2724 wrote to memory of 2520	2724	rundll32.exe	30
PID 2724 wrote to memory of 2520	2724	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\$PROGRAMFILES\staalarbejders\Telefonbger.knu
1⤵
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\$PROGRAMFILES\staalarbejders\Telefonbger.knu
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2724
- - 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\$PROGRAMFILES\staalarbejders\Telefonbger.knu"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2520

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
0276ce3b10a14c2a702b554fc43e4425

SHA1
8d40d68a980a11c95e76ccb03ee5ae19ea7c9173

SHA256
0a4a00531f0b45beddcedc4f930dd5b371bbd4ca7b4f0e2998bcdc08f290e107

SHA512
fba9ea16f7c7e62476e053568a1751dcf12e146f644c6f37ecd64b22d80ca39eaeee4f170cd7432af5a1ba272f32149969ea3f21d3588dad16c291862d1f90a7

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