040a405bb17e3417b011d884fae88a2f2040c5c278b9e5363c4e94b8be4bd2a2

Analysis

max time kernel
34s
max time network
19s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
05/08/2024, 18:34

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General

Target

Juletrapper.pyc
Size

12KB
MD5

28a2c075b508e6eaf507fcb0e5d02d8c
SHA1

34bb62a60da315de7cb3b85ab60e9ef1e90ab0c1
SHA256

33a068b3fa602f8d45642ed25184671202a1662f791813eb49b3fdc9f73fd01e
SHA512

068db1800c966ea5984c1c003cbf21a0d9a09e7847716cf7ace175ac1fe29af722b8292978e3b1aec5dfbba5dfe60a179fc623b5dc23789b66e8203483cdb70b
SSDEEP

192:+ls738flIhnk1BSJg3yBDhMgxcEZ8E++VOX87jT0dWSh6peWg:+jfqh6NyFp/VB7jYx6peWg

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_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-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\pyc_auto_file	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2820	AcroRd32.exe
2820	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2796	2932	cmd.exe	32
PID 2932 wrote to memory of 2796	2932	cmd.exe	32
PID 2932 wrote to memory of 2796	2932	cmd.exe	32
PID 2796 wrote to memory of 2820	2796	rundll32.exe	33
PID 2796 wrote to memory of 2820	2796	rundll32.exe	33
PID 2796 wrote to memory of 2820	2796	rundll32.exe	33
PID 2796 wrote to memory of 2820	2796	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Juletrapper.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Juletrapper.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2796
- - 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\Juletrapper.pyc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2820

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
8922eb74a62ac331d440cd533c7e9896

SHA1
836a6cfff3c9db549b2dca4de779553abcd10234

SHA256
be9667e65c15915a18cc2456e75eb0be316cb1b8c494e6a13c7804135dd2ca49

SHA512
43e3a9e09a75c01fed2c88b2e755abacaaa48fd1e6cf20c81863e57a5dc338af3f985f42b07a27c50a222c2c74ddf7b5c41498278b33c87b2e8b9620c2e88440

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