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/.ds_store
Size

10KB
MD5

5b602f5a74915be89456d1637889ffbf
SHA1

6516c1b8bf9113a407080470007d942a98655465
SHA256

1bf055eed75dcb1905a39314cb93d74529ab01c9d3ad1b63b372d241fa8695e4
SHA512

803b8c1c978d5bb8cb579cdc8e3368b77eeb9fd12792560da458971c1811fcaf4f544cc51187dceb6c7a524fd9ed48685b92417179d2f2c98f03b480febcaa41
SSDEEP

96:2g9gA3yuFojjb5oKbSGrj7P7HAnGyb5oKbSV:lJ3yukbSo0bSV

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-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.ds_store	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.ds_store\ = "ds_store_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\ds_store_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2760	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2760	AcroRd32.exe
2760	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 3016	2500	cmd.exe	29
PID 2500 wrote to memory of 3016	2500	cmd.exe	29
PID 2500 wrote to memory of 3016	2500	cmd.exe	29
PID 3016 wrote to memory of 2760	3016	rundll32.exe	30
PID 3016 wrote to memory of 2760	3016	rundll32.exe	30
PID 3016 wrote to memory of 2760	3016	rundll32.exe	30
PID 3016 wrote to memory of 2760	3016	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Arc-1-26-45413\.ds_store
1⤵
- Suspicious use of WriteProcessMemory
PID:2500
- 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\.ds_store
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3016
- - 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\.ds_store"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2760

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
5851d3edfc8aed2697a3adbd44796fac

SHA1
555a14d0e09f4acf9f15c9f865a2b66a0d7f0129

SHA256
6badb5ab8bee11d5c847c04a73464fcd7d265873d92282189923c77a386415ae

SHA512
f7e2ae8d42927496c11eadbaeccbee8bfc46b376b5fa300ab7b767747573053eb3935b8c74cdacc70efdc9bb04ed8ff416cf620e25e0db080da66da3e3ff0c14

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