aaa87b8aba133ee0db3b44e60ddc93e3c5bd62280439a2c3028bffe0a0f7ced6

Analysis

max time kernel
150s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
15-06-2023 14:53

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General

Target

classes/module-info.class
Size

266B
MD5

5bae5c2832835e8a8c845e04f6d7b5ea
SHA1

e0b5e77e2059591f6eb71a9f5c6e938b79edce50
SHA256

e92e01bc46283edd917ee3a4c9cade7bc11084863e4a0eb6b2858b6c0bafe086
SHA512

65cd71dadd465edcb69e3f7f9a7cf39b89624cdc8971b8dea5b0e2c1f530d4f02786b66537d9c27a523a0dfd754d4ac5161b0042be07923b59e3541627cc2f53

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 10 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
860	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
860	AcroRd32.exe
860	AcroRd32.exe
860	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 284 wrote to memory of 1628	284	cmd.exe	29
PID 284 wrote to memory of 1628	284	cmd.exe	29
PID 284 wrote to memory of 1628	284	cmd.exe	29
PID 1628 wrote to memory of 860	1628	rundll32.exe	30
PID 1628 wrote to memory of 860	1628	rundll32.exe	30
PID 1628 wrote to memory of 860	1628	rundll32.exe	30
PID 1628 wrote to memory of 860	1628	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\classes\module-info.class
1⤵
- Suspicious use of WriteProcessMemory
PID:284
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\classes\module-info.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1628
- - 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\classes\module-info.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:860

Network

MITRE ATT&CK Enterprise v6

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
330904853a7b6e67fdc46888534bbb6e

SHA1
f97588b93f9af3ec24c67f75a0cb235b5b975149

SHA256
04f7957e385edef9cce5c56afb066809585957d7c3bb0acfe42d3534586d3a74

SHA512
773953f3ababb9de978861aab120c6bfdaf3f646f6e105e3754a23b5cf1fc2130867058a6c1746bc47bb8fb7cce6421ba5ee4e1ac4ba0ad178e002c23de2c32b

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