594fc6920eaa06364ff7ffeb87be15ec81882030749759a872a6b9f17da75670

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21-05-2024 14:43

240521-r3mvhshd83 3

21-05-2024 14:40

21-05-2024 14:37

21-05-2024 14:34

21-05-2024 14:31

Analysis

max time kernel
18s
max time network
17s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 14:31

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General

Target

Some Problems/Copy of dir (1).c9r
Size

36B
MD5

70fd0f3c15fd684c7a6d7c1cce2aa5e5
SHA1

790d7de735683d0cff53e0be880e995c35dce9cf
SHA256

ea92802bb79e718866a3a549a70ede989c2b54570454c9d608cf13795d2b4a52
SHA512

923ee1ac1ec4fdc2241ed0899496ded4b688f0710f73ab7a5d26c4277efc9846bcf859438b17f68d364fbe6b217d3e7bf5956340c17bcf125d4756e0088881f8

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\c9r_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\c9r_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\c9r_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.c9r\ = "c9r_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\c9r_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\c9r_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.c9r	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\c9r_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2692	AcroRd32.exe
2692	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2244	2824	cmd.exe	29
PID 2824 wrote to memory of 2244	2824	cmd.exe	29
PID 2824 wrote to memory of 2244	2824	cmd.exe	29
PID 2244 wrote to memory of 2692	2244	rundll32.exe	30
PID 2244 wrote to memory of 2692	2244	rundll32.exe	30
PID 2244 wrote to memory of 2692	2244	rundll32.exe	30
PID 2244 wrote to memory of 2692	2244	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of dir (1).c9r"
1⤵
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of dir (1).c9r
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2244
- - 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\Some Problems\Copy of dir (1).c9r"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2692

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
2c74e2b3efaa88b67b93d0a74edd5332

SHA1
14a32b15c8c174bcd0cf3ee5d9369e0c81f1e8dd

SHA256
cbcd82da0767dc1fb9b1281d3ea17fb77bea51540f2dc5e3337d20ed8192eba4

SHA512
d5f22749318a198333199dbc3c0cd8732f7cd2926516644531e6b9d7209ecebbcd153b832c09fce43b32f1d38711322df833f455bc6b16dcdda1b84a05e1ee5c

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