1e3c17c2b74ad7d0e3f646ec9fe2a5bb6bd9a2f5a2cf02c02fc4b5d432dede69

Resubmissions

07/08/2024, 21:06

240807-zxvl6sxfkf 10

06/08/2024, 20:12

240806-yzbfmssgqc 10

06/08/2024, 19:51

240806-yk45eaydrn 10

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06/08/2024, 19:51

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General

Target

BrowserUpdater.vhd
Size

6.0MB
MD5

5714c27e55d82b9ff9d92c04eee9570e
SHA1

78484dac3651e19d92bbd717769c696cae5da1ba
SHA256

1e3c17c2b74ad7d0e3f646ec9fe2a5bb6bd9a2f5a2cf02c02fc4b5d432dede69
SHA512

a63f236285d98375b904dddc1fa4db4ccbd7988b00f19690127bd93cbe7f759ed7fe80b0b4d1d1e4d86384c5f8496e7b80e9dc1e75692c68e3b7f7834a472189
SSDEEP

96:fYgvmJUX3S7OkUX3S7OdyHywJOSk58/AQcsgffVxfA2NrXl:fFvuUnS7vUnS7GyHfJOSk5aAQlglJ

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-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.vhd	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.vhd\ = "vhd_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\vhd_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2864	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2864	AcroRd32.exe
2864	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 2692	1604	cmd.exe	31
PID 1604 wrote to memory of 2692	1604	cmd.exe	31
PID 1604 wrote to memory of 2692	1604	cmd.exe	31
PID 2692 wrote to memory of 2864	2692	rundll32.exe	32
PID 2692 wrote to memory of 2864	2692	rundll32.exe	32
PID 2692 wrote to memory of 2864	2692	rundll32.exe	32
PID 2692 wrote to memory of 2864	2692	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\BrowserUpdater.vhd
1⤵
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\BrowserUpdater.vhd
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2692
- - 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\BrowserUpdater.vhd"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2864

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
6b483536542dfa4a445d35330235b780

SHA1
c15e86b8cc98b16c0363e1533bd83bd15aebe265

SHA256
f7bd8338d78586deec65dd2f45356f170af689e559060c3bbfd2bb245b96bfb8

SHA512
a673787b49a935516fbf1e9479ea4c49fd3043ee6f2a277c4f40a11d12774055935983d9fa2e4b747d899c88f3244bd215f1b5c2a974a799914e5b441a9ad125

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