098cf009334d253d3296fd1014458cd0fd4f7af1c98b504776206192d6183008

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-09-2024 10:34

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General

Target

prebuild.pyc
Size

244KB
MD5

ea2dbd6f1b1d4131871713028269225c
SHA1

4587bebed06ce225034653ac369ed23c0cb9162d
SHA256

6e98f771b39c2ae812542fd568163aeee0b2ea518b5df8116be63819fe155d81
SHA512

303b498e1a89385d1136be22be6df668332a47614246f0550d0b8fcd4fd1578378f9769ec335a21a5c8c2ee3424954cf298a613f514e5b59fc6abb7736fb4ca5
SSDEEP

6144:7qFiq9c+GyVqdLY4t9bY3zza5XbTuFxJ5N2VPA:7Ciq9cfdLYm9baoVPA

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-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\.pyc	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2768	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2768	AcroRd32.exe
2768	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 2260	768	cmd.exe	31
PID 768 wrote to memory of 2260	768	cmd.exe	31
PID 768 wrote to memory of 2260	768	cmd.exe	31
PID 2260 wrote to memory of 2768	2260	rundll32.exe	32
PID 2260 wrote to memory of 2768	2260	rundll32.exe	32
PID 2260 wrote to memory of 2768	2260	rundll32.exe	32
PID 2260 wrote to memory of 2768	2260	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\prebuild.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\prebuild.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2260
- - 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\prebuild.pyc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2768

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
58dabd2398d05c3fb5b4d851714eb73e

SHA1
bab96025089129309ac04a6f3d15c43fbc05339f

SHA256
f8e078df954fb084fb81bd41c21f9a10468528a66ce10074d0a7674d8c12c36c

SHA512
37afa42455bbac08e07a6d23a6cca77eb35eea961f15fd4c562366be2d7d89f4648d44d35e01d39a3332d8bfff658d871337172bb9524084a271c243d11bfff9

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