d7255462d3c048991f6cb44d9b0356f7f9e2a67c51a598c9082f6da88fbc8c27

Analysis

max time kernel
151s
max time network
35s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
08/07/2023, 22:14

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General

Target

MTalk/OpenJTalk/dic/win.meta
Size

192B
MD5

397df877c909edb5ec7ce4b097405faa
SHA1

b63bf57fe9f91956a7a367a108cc73e3b53cc13a
SHA256

d7440a526c60d078e3aa8eb4d0435cad7c55bc274b7f34828425741ae255b25f
SHA512

3749c8909cd8d6f9a602ac3bcd4c2dc224e75f890288a887508359aee0ff02ebd4d46add33aacc0bf9f59c66e22eedb69fab4a276526a308ac26fad8109422a0

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-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\.meta	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\.meta\ = "meta_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000_CLASSES\meta_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1580	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 1512	2364	cmd.exe	29
PID 2364 wrote to memory of 1512	2364	cmd.exe	29
PID 2364 wrote to memory of 1512	2364	cmd.exe	29
PID 1512 wrote to memory of 1580	1512	rundll32.exe	30
PID 1512 wrote to memory of 1580	1512	rundll32.exe	30
PID 1512 wrote to memory of 1580	1512	rundll32.exe	30
PID 1512 wrote to memory of 1580	1512	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\MTalk\OpenJTalk\dic\win.meta
1⤵
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MTalk\OpenJTalk\dic\win.meta
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1512
- - 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\MTalk\OpenJTalk\dic\win.meta"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
72081b16381eddda90a2fc7758191675

SHA1
4a17284fc882e4aeb2bc70035861ef2449d1d4fe

SHA256
b9f3e514a3d01a3f63c0ee482e5b4044cbdcaf27ad0b0895a73e979b88cdfdae

SHA512
e502c6a70951bb046f65f692fd07e536d739d7cc2629d9d0faac37ca0aa17472c3189bce257e06796407d8af820e3493f86fc537a95b06d9cac4bce99c23fe79

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