b2c2a9c32a27fe5c3872a0a96f96fad6597e4f8f5242ec90a7c2b69a1b409bb0

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 08:22

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General

Target

empyrean-main/builder/util/obfuscate.py
Size

1KB
MD5

b5854b3148f23dbb9355d3a30e3315a8
SHA1

e4273fcdd3948fa75960af037bc9a916705c553c
SHA256

c9091f59845b3201e05e4294dd14c54ba77ba3e679998fb4b37ea204544a4650
SHA512

1179ac8391e9ec93c23704eaf3c630ce6fcd3dff5d372449addb7639e4bebb05328b1213b32ce99b37b0ec046b23488d9e0073b7de3129005c57d0056d49b126

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\py_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_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-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2416	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2416	AcroRd32.exe
2416	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2516	2236	cmd.exe	29
PID 2236 wrote to memory of 2516	2236	cmd.exe	29
PID 2236 wrote to memory of 2516	2236	cmd.exe	29
PID 2516 wrote to memory of 2416	2516	rundll32.exe	30
PID 2516 wrote to memory of 2416	2516	rundll32.exe	30
PID 2516 wrote to memory of 2416	2516	rundll32.exe	30
PID 2516 wrote to memory of 2416	2516	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\empyrean-main\builder\util\obfuscate.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\empyrean-main\builder\util\obfuscate.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2516
- - 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\empyrean-main\builder\util\obfuscate.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
f3dadd86c63ee081911c66b7ec3dcba3

SHA1
c77e6edb18b5dddbbd944d7f602f2ee31e7edd78

SHA256
dbe70b52918a9527ec9abdaa73233d87946cbe5a59b44617ca6521f35c7a5ea9

SHA512
c80bf94298bda43949aaec4b9484f7cd36863a83b968b8cf85458eab6eaa0d349156444c73ef9e8c941749118c09d61ac72d9dd78f5f2cebbe445d5d5b6c8546

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