96e6276b4d1ff728b1e2014a3be856a5e35a6a885df0797a54728868798feac2

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
24-01-2024 04:03

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General

Target

DirectML.Debug.pdb
Size

3.3MB
MD5

b8cfb23e2aec87f640b0f0133240148b
SHA1

c29e5b6d46add5128bdcd0230e70ad7a2e3fe961
SHA256

b8f480f17df0823e888ef458baec8e99ada018ef7ab9f55185632086d3a1a7b0
SHA512

69993ac1dd830e66bc574e9fe587452f9ac743a72a3c5207b575443ecde2e6c708b21128b267d0eb6b46a1472b83398c3df3aafae016fc9187a7263c71feeaf2
SSDEEP

49152:67MDSNBpZzIzLZIbak23Nxk23Ngk23Nxk23Nbk23Nxk23NNk23Nxk23NTk23NxkT:G9kSLGfI

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pdb_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pdb	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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
2640	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2620	2340	cmd.exe	29
PID 2340 wrote to memory of 2620	2340	cmd.exe	29
PID 2340 wrote to memory of 2620	2340	cmd.exe	29
PID 2620 wrote to memory of 2640	2620	rundll32.exe	30
PID 2620 wrote to memory of 2640	2620	rundll32.exe	30
PID 2620 wrote to memory of 2640	2620	rundll32.exe	30
PID 2620 wrote to memory of 2640	2620	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\DirectML.Debug.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\DirectML.Debug.pdb
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2620
- - 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.Debug.pdb"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2640

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
151d355190580b5fd2d3a773ba6fb7f6

SHA1
a84f83a91d1fdfff133fca0a3e0a52d013b90708

SHA256
ed47321127414e932f645af50f990bde46a22f8817de5ee75ef0ecb9029963a9

SHA512
d5a9f89ffdb59320926628d753b3fed5f3c27abab01ff82adf890cdd4beb7f07455494a7d126e53738738422f962b4cc1b55d78fab004a6239b60cef30262ec1

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