721a4b64330caaa0a64de7a355c76add6f50a90ce6039fbb17a8db6ddfd8debc

Analysis

max time kernel
129s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/06/2024, 08:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

tbk.pyc
Size

3KB
MD5

d8b7458a5a3348f1c80114e6fd6d5169
SHA1

6ceb929dbd6ee5aa98e31011caa164e02a5e282b
SHA256

2a96c8523b2c46053758d516847a193f82c7ea42bba62a67225eb86b36e1898a
SHA512

89cca90cadf572cebbdfb57b7a7a3f5c7c9cc6acfdc5f2391db377dc7e34eedc7f3a0ca2fb91e6ce455ca087d6d30fba7cb4edf53fef006630b34081830a1405

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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2640	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 2532	2456	cmd.exe	29
PID 2456 wrote to memory of 2532	2456	cmd.exe	29
PID 2456 wrote to memory of 2532	2456	cmd.exe	29
PID 2532 wrote to memory of 2640	2532	rundll32.exe	30
PID 2532 wrote to memory of 2640	2532	rundll32.exe	30
PID 2532 wrote to memory of 2640	2532	rundll32.exe	30
PID 2532 wrote to memory of 2640	2532	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\tbk.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\tbk.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2532
- - 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\tbk.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2640

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

Loading Replay Monitor...

Downloads

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

Filesize
3KB

MD5
b24b10644046f59216547f6d9dc1d724

SHA1
c7bf6f8e957feff10a8069c78404100d28d96575

SHA256
cf3767da6063cf1624491cbfa754c545a06368d287367895b01412c859c3e894

SHA512
014795f1fe4b3732bd2e18eeeef479d49df9008800efad4828791ed7db9503723b9bbdf7229f2f488958301c93c6c0b0a3f5e6eae1e2811c09687277529283c9

Download Submit