66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 17:49

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General

Target

AM.class
Size

1KB
MD5

99eec35e846128e2cab4c6ac1d2ae710
SHA1

095711f29597e81dcde80b965dae38a8f5b7ec56
SHA256

fc95beab9e006ad9fda4e9514323c16fda251b8a596c0f1a8db6c37e41764554
SHA512

de71186de8aa2089e886284ae93eacedaf1f03e1781057f376aba0c02122c2a1fd8d1f92b30473442392ff244e103a4566029e19c6f5d163dfe13dceef6faf39

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-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\class_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
2948	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2948	AcroRd32.exe
2948	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2768	2108	cmd.exe	31
PID 2108 wrote to memory of 2768	2108	cmd.exe	31
PID 2108 wrote to memory of 2768	2108	cmd.exe	31
PID 2768 wrote to memory of 2948	2768	rundll32.exe	32
PID 2768 wrote to memory of 2948	2768	rundll32.exe	32
PID 2768 wrote to memory of 2948	2768	rundll32.exe	32
PID 2768 wrote to memory of 2948	2768	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AM.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AM.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2768
- - 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\AM.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2948

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
518fb68fef7f4beb4ff9745db873ca88

SHA1
067612f30bebbd41eceaecab29ae842699be129b

SHA256
e22ecc8ac27e3384f976071abcc91acd9edab6af35419810fb78a66b69a5b0c6

SHA512
7cec66c11b0d966a801c9d74f442fb02c7e9a816d1200ba75e2526e91c823a9c8341d25d37ab46e73cb59f85130e9eadec44a4e000d8cc9b715b4596baf20ed2

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