34d625ed4dd22259602e2a8bc88afb1f3429ba96d23c99c0d3fdb70067415f0b

Resubmissions

04/09/2024, 17:13

240904-vrqntatfmj 3

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04/09/2024, 17:13

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General

Target

Tsurugi.ahk
Size

6KB
MD5

cf29aafdd76d7900002b306fa8f5fd7c
SHA1

9fe952b29528d47e5ab1d5e35231a53ccc2b6b2f
SHA256

34d625ed4dd22259602e2a8bc88afb1f3429ba96d23c99c0d3fdb70067415f0b
SHA512

535ce79b36599f98859631c0f2c89a27db466d70ee5ad182dc1c803e22bb18469210af4645baa8223db1afbd6d004d6596848d6259a1639cc2509d58c296dc30
SSDEEP

192:IH1Dk4/EGMT0yV5+ZkOyH0Q5JF0qH7mdT8W3qDq+4qC:IHZtByiZXytzC

Score

3^/10

discovery

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.ahk\ = "ahk_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.ahk	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\ahk_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2764	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2764	AcroRd32.exe
2764	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2900	2232	cmd.exe	31
PID 2232 wrote to memory of 2900	2232	cmd.exe	31
PID 2232 wrote to memory of 2900	2232	cmd.exe	31
PID 2900 wrote to memory of 2764	2900	rundll32.exe	33
PID 2900 wrote to memory of 2764	2900	rundll32.exe	33
PID 2900 wrote to memory of 2764	2900	rundll32.exe	33
PID 2900 wrote to memory of 2764	2900	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Tsurugi.ahk
1⤵
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Tsurugi.ahk
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2900
- - 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\Tsurugi.ahk"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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
4de046ea18ca1ec7481af406ca9948e9

SHA1
bab5604740e946232661c11331d8d15c05a41b8c

SHA256
60d9cfd6159bc0cb3787a5e64d637990e4cf5c95b965976d1017a8e9e2685734

SHA512
7b4108e5a46016e9cfd846535cb1fe373f6b01935a5dd455b3866649a15c5a6161b66133d5ede41209d5cbd1f9f12ac623765e9fd5fb3a4ccea9d3440fda258c

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