96e6276b4d1ff728b1e2014a3be856a5e35a6a885df0797a54728868798feac2

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24-01-2024 04:03

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General

Target

DirectML.pdb
Size

6.1MB
MD5

4bae917175a36729c06e1b52da9a9e77
SHA1

8ca59006cdaf233d76f4aed171cbafd6be500349
SHA256

70fc030662436c3d360e25ae6a63e39b7ebb20d532cebe4d5ed06ea227632a6d
SHA512

a76bdf1aae69669ba5df683f226256224c73f72bd35cc780c008e82a4f7633eb1173483f08a8aba6120d4b51b607c66dcfa83ff859147bad55e526e317820109
SSDEEP

49152:RSW6Yk23NoQk23NofqegnbW/t/c1x1VJX24IvDFiDuQp+dkkxk23Nxk23NCk23NB:CpHoU

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-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.pdb	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\pdb_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
2632	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2632	AcroRd32.exe
2632	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2892	2528	cmd.exe	29
PID 2528 wrote to memory of 2892	2528	cmd.exe	29
PID 2528 wrote to memory of 2892	2528	cmd.exe	29
PID 2892 wrote to memory of 2632	2892	rundll32.exe	30
PID 2892 wrote to memory of 2632	2892	rundll32.exe	30
PID 2892 wrote to memory of 2632	2892	rundll32.exe	30
PID 2892 wrote to memory of 2632	2892	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\DirectML.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\DirectML.pdb
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2892
- - 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\DirectML.pdb"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2632

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
a30ec1823c7caf87a8bdbbe9a4031933

SHA1
f24924654b8aa8d949705631e93d80c89b41dc7b

SHA256
e6a5588291341323cd9d0de9220e422e6d3ef38f82cd9ba4a228279228ff87b9

SHA512
35c349f9271e8af150fc88a0f5f654923dd3560708f58528a7050929a6949bba9b5af627bd9879b369d99a0befa242d4361502b31b6a7d7f5905c2c326aa23e7

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