f81f1dfc07e5b84cd158ed24ec60ac43a2d2427835d4d1a21b8f8622b7b706a6

Resubmissions

24-01-2024 04:54

240124-fjtyyabbek 3

24-01-2024 04:47

240124-fevdxabca4 1

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24-01-2024 04:54

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General

Target

Arc-1-26-45413/.background/background.png:com.apple.quarantine
Size

57B
MD5

5577c06d8fc4cc5bb6af04a120ff1d2b
SHA1

c2d15e6a866bc62b16c51467aa45b7172ec0a7e9
SHA256

8fd969e16f8d8e7342f47723442f1a7ab7ea24a91433178b5ea02d9f25d7a5f5
SHA512

43f23c1b2b09b783cd46b8c4ea2b7626c4122d663dad7dba6f396f12145481356d0721b454d0ca7cc8395ecc124a13f563cb3a04f2fb27a3c1307b11c1016163

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-1-5-21-3601492379-692465709-652514833-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\.quarantine	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\.quarantine\ = "quarantine_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\quarantine_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2996	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2996	AcroRd32.exe
2996	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 3000	2296	cmd.exe	29
PID 2296 wrote to memory of 3000	2296	cmd.exe	29
PID 2296 wrote to memory of 3000	2296	cmd.exe	29
PID 3000 wrote to memory of 2996	3000	rundll32.exe	30
PID 3000 wrote to memory of 2996	3000	rundll32.exe	30
PID 3000 wrote to memory of 2996	3000	rundll32.exe	30
PID 3000 wrote to memory of 2996	3000	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Arc-1-26-45413\.background\background.png_com.apple.quarantine
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Arc-1-26-45413\.background\background.png_com.apple.quarantine
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3000
- - 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\Arc-1-26-45413\.background\background.png_com.apple.quarantine"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2996

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
6008b94acec49fb000ebdb471ba45717

SHA1
e3235bcb429725584d1f8efe3ff6dc39744d0457

SHA256
080e8f9c28d41cc5db5e722d9bdc9b7ea3e555144a968383d77c7332de6922d9

SHA512
7a019cdc3e534d3241c2c6b99155fc29bbb10b49423c9ac798c22d035c4e464cec9311d67b16d5974a19710bbc6fd07fa0268aeadea2338696e549fbda468273

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