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Resubmissions

03-03-2024 10:17

240303-mbhz2aha6s 7

03-03-2024 10:02

240303-l27kmshd24 10

Analysis

max time kernel
18s
max time network
18s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-03-2024 10:02

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General

Target

linux_hive.elf
Size

2.3MB
MD5

56075e7c63b3f9f612cde6187d4a7877
SHA1

1bcfa979b7b9044ba5ce5c006bd26b0bdbeb8464
SHA256

12389b8af28307fd09fe080fd89802b4e616ed4c961f464f95fdb4b3f0aaf185
SHA512

7df68e37b3c2e7ce197f0d8736d06adf808343fe2d638bcd3e0f285968e1365c06b33157c6e5816b9fa9362e6adc262d3d2da45d3d1a38efb7e2ce980fce8b80
SSDEEP

49152:TzVcrxrb/TGvO90dL3BmAFd4A64nsfJbJ5PhTZDknzImQXNqw0Xfgg778lwQJKTS:TcbP/kB30JKT

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-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.elf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.elf\ = "elf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\elf_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2868 AcroRd32.exe
2868 AcroRd32.exe

pid	process
2868	AcroRd32.exe
2868	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2960 wrote to memory of 2144	2960	cmd.exe	rundll32.exe
PID 2960 wrote to memory of 2144	2960	cmd.exe	rundll32.exe
PID 2960 wrote to memory of 2144	2960	cmd.exe	rundll32.exe
PID 2144 wrote to memory of 2868	2144	rundll32.exe	AcroRd32.exe
PID 2144 wrote to memory of 2868	2144	rundll32.exe	AcroRd32.exe
PID 2144 wrote to memory of 2868	2144	rundll32.exe	AcroRd32.exe
PID 2144 wrote to memory of 2868	2144	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\linux_hive.elf
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\linux_hive.elf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2144
- - 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\linux_hive.elf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2868

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
dfa21d73f8b478f903d4e93c411664b9

SHA1
3541d9e963f8ec7ee31f92e773ff77bc71c51e07

SHA256
918d24243e56eeb3f52e61c01faa74132fdcf2790e1acdb315790008b611edb9

SHA512
6dd5111ac727234355307b3faa17ce03e7290ea39e1c0a460161a8d9af01fd72990496cd217a73cd6a1147f2daf0e0b16b71ca65e6131b7d57b8e79d7ee59be5

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