4d4d53b1838441f48f171c68ff21096c582492866a8fd2fa7f8e91e24cf8a0d7

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 03:18

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General

Target

doorstop_libs/libdoorstop_x64.dylib
Size

24KB
MD5

2d65bfc92198de87eba43f4b6f4b7f59
SHA1

c99a568f41bf86f55a7533c80d5a33a5a4dab523
SHA256

1867bfefe236bcf2c29d2a7e183a755c749861d27355e8bc4317a343e93ef15b
SHA512

92ac79d4dac74c5b15fcdb800c8fd90bf7971e725ad3d6c308d804f968365fe18dd813661d743523a8f65648a99196a82bd811cbae3521ae91470826ad68a5f3
SSDEEP

384:OjN7vZKC2t7nAhQcgtslDPOmp3PjvFNIpbNb:OjNb/MslqEjIpb

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

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.dylib	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.dylib\ = "dylib_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\dylib_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2348 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2348 AcroRd32.exe
2348 AcroRd32.exe

pid	process
2348	AcroRd32.exe

pid	process
2348	AcroRd32.exe
2348	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2912 wrote to memory of 2616	2912	cmd.exe	rundll32.exe
PID 2912 wrote to memory of 2616	2912	cmd.exe	rundll32.exe
PID 2912 wrote to memory of 2616	2912	cmd.exe	rundll32.exe
PID 2616 wrote to memory of 2348	2616	rundll32.exe	AcroRd32.exe
PID 2616 wrote to memory of 2348	2616	rundll32.exe	AcroRd32.exe
PID 2616 wrote to memory of 2348	2616	rundll32.exe	AcroRd32.exe
PID 2616 wrote to memory of 2348	2616	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\doorstop_libs\libdoorstop_x64.dylib
1⤵
- Suspicious use of WriteProcessMemory
PID:2912

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\doorstop_libs\libdoorstop_x64.dylib
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2616

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\doorstop_libs\libdoorstop_x64.dylib"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2348

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
82d6f00ae37154e4b8b2460daa117c1a

SHA1
48053794f09d7e0a4c5cf637e6fe7972ba6ca581

SHA256
390b2815d387e50417d7e2b177b1c99ee85e8f1bb3c91b739c2ddad27cb95c48

SHA512
ae31b89cab20b8450a47e7ad808f6b5f5abbb97c478e1e82dfc8e6d908abe58c030afd2d9a8ab1a1e352d0792ce32407f607ee515870d96e9c2835f1c05aac98

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