4e15af88aac65f1ac73a9ec2d18df57f44d37f19b38cc005f0b9daf4233d57ae

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
15/09/2024, 17:00

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General

Target

epigrass-1.5.1/Epigrass/CustomModel_example.py
Size

1KB
MD5

b3b9870245a460a4f16cb38569717432
SHA1

9dc0946230fa25bb8b1cf7d1f226b01f1c876a95
SHA256

a42e5b852b851f3e89a5fadb14a9039783c1d5d8370534c831d3ad8152fd49b9
SHA512

80fa4c0e164bb72d47108c5d781792deeccb86bd85e91ded51ec4e1899e8c83bb133c4137648a112f880be676ea8331357ddc5138942aa241ce7ee7b164605cb

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-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2712	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2712	AcroRd32.exe
2712	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2920	2520	cmd.exe	31
PID 2520 wrote to memory of 2920	2520	cmd.exe	31
PID 2520 wrote to memory of 2920	2520	cmd.exe	31
PID 2920 wrote to memory of 2712	2920	rundll32.exe	32
PID 2920 wrote to memory of 2712	2920	rundll32.exe	32
PID 2920 wrote to memory of 2712	2920	rundll32.exe	32
PID 2920 wrote to memory of 2712	2920	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\epigrass-1.5.1\Epigrass\CustomModel_example.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\epigrass-1.5.1\Epigrass\CustomModel_example.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2920
- - 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\epigrass-1.5.1\Epigrass\CustomModel_example.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2712

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
c3d279ccbb78d5e50755f1fdb242d5a1

SHA1
0eeef90a02fe4ee518a66451446906eb6efde8fe

SHA256
798ca21f292fb14e2754e7a5e3867e18676f0b1de674dd3681eb9bea2a4026df

SHA512
ce9baa1ce89edebbdbecaa701aa689d195493d872a10c4535ee1c580848899accaad9f497e3ecd922f977ff844b1b7f689e499b3d02f95a31b3e40d05297ec97

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