13b4b162002813fdacd03827f67bb6370f8556972aa6bb6fc8f7bde36f04460f

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 19:31

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General

Target

mullvad_brute_gen_checker/bin/Settings/AppSettings.json
Size

50KB
MD5

f0b3d5f43ae4e62c592f3e4ef0ab1a48
SHA1

7b6ac9f84925c36bff60bd5da8c66f11b25b50e1
SHA256

ebbcdb768eded72ae009526ea3e6e0632778b3667bac2fab92b1be99aea71d02
SHA512

f2712a9782085f83b5acbcf5565d1a27f87a79857f095a89a91985419bb000437c318ba95fea0eaf3e867c33650fe0a25af7ff2f33653ac694cc6cd26e97c876
SSDEEP

384:gR5kHmUZCkHmUQzCrnFrbUzaLHkHmUckHmUr/bT:gKLHLJF0zGyLzLTbT

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-1-5-21-3450744190-3404161390-554719085-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\json_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
2856	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2856	AcroRd32.exe
2856	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 2716	2064	cmd.exe	31
PID 2064 wrote to memory of 2716	2064	cmd.exe	31
PID 2064 wrote to memory of 2716	2064	cmd.exe	31
PID 2716 wrote to memory of 2856	2716	rundll32.exe	32
PID 2716 wrote to memory of 2856	2716	rundll32.exe	32
PID 2716 wrote to memory of 2856	2716	rundll32.exe	32
PID 2716 wrote to memory of 2856	2716	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\mullvad_brute_gen_checker\bin\Settings\AppSettings.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\mullvad_brute_gen_checker\bin\Settings\AppSettings.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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\mullvad_brute_gen_checker\bin\Settings\AppSettings.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2856

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

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Downloads

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

Filesize
3KB

MD5
930a2c7d418623a44a4aaffcb4ccf597

SHA1
e933a6d68ee0e10470032aa19af3ee92fe6026dd

SHA256
21309370324573bba55b85acfdf1908cbeeaf098f1cb3c72aeb44f26d09cccd2

SHA512
c4839dd79c73a680702a37dbd0a5ac545b95328377bcca0352805467f3d805a3c942b327dbde0c8dbe674d55bb6a02e7cb74e97eacb2e6b70b0eadd3c393d28d

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