da091f6395e82e09c6dcab3d47fbf22f978c1a3642eff0cee0d5a2cee818d17f

Analysis

max time kernel
102s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
15/09/2024, 16:54

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General

Target

epigrass-2.0a4/CustomModel.py
Size

15KB
MD5

83c500edd7c1bbb505c79a793b76643f
SHA1

b76b2d178c8f29066445081ff9cad110512f86f3
SHA256

a7784a969901a1d6675ce40bf48b8586ae69cc6328dd1ea8b22ba85272ab5a14
SHA512

29fc32977a441dd6cefba30c3b92a25fac071bdb2e37613ba6108b4c9900ecf228652200631ec8fd83cde8f798c0b49463f4fc001145d83c9d2b531a7c01b767
SSDEEP

192:0hG4WooYbY2ARovLvmlRC7SIVO5idUQyTVT5CnDOfCeQiKFrmaOPubUSsV3eC1f6:kGab+KDVrdUiaCZ8aUhS

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\py_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\py_auto_file\shell\Read\command	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\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2664	AcroRd32.exe
2664	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2868	2172	cmd.exe	30
PID 2172 wrote to memory of 2868	2172	cmd.exe	30
PID 2172 wrote to memory of 2868	2172	cmd.exe	30
PID 2868 wrote to memory of 2664	2868	rundll32.exe	31
PID 2868 wrote to memory of 2664	2868	rundll32.exe	31
PID 2868 wrote to memory of 2664	2868	rundll32.exe	31
PID 2868 wrote to memory of 2664	2868	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\epigrass-2.0a4\CustomModel.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\epigrass-2.0a4\CustomModel.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2868
- - 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-2.0a4\CustomModel.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2664

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
912464ad2bd25505c42aaff397513d66

SHA1
f3678bc613e6121cf6c6bfda1649f194314148a2

SHA256
7db04a837719eb4107915f8be55f6432dc950d7a0d80d1e7617199a4345070c3

SHA512
4bed8e43271c87ecb9f101483276f86447b176055b4d9b835b03e08e6e04e901a7a4e5d09e7d8595228199b6dd9d43ba1cd3bd508da3ae1e6f3488c2e75b7ffc

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