b973fc64fb8e9ffb59ed14d00143c19f17c84bc731407ec71143be91242657d6

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
05/05/2024, 01:29

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General

Target

encodings/cp500.pyc
Size

3KB
MD5

99a67f5987603deb00c3d6e6e23bdaba
SHA1

7b383ab184f8237e6e83b43a7db9ae449a64e989
SHA256

1d0cec20c2fe2b7661ea48c1d02e8166316565bb0b52e367405ef3a8adad24ef
SHA512

03fb97cffcc65cfe2aac378e8c3e5e02b3b7ecb2036b60e242c1ef2df904beaf64354e95b20b10b504f95840fae0ce35996f6e9997b481c67ee9c16634d678ae

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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pyc_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2512	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2512	AcroRd32.exe
2512	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 2660	1844	cmd.exe	29
PID 1844 wrote to memory of 2660	1844	cmd.exe	29
PID 1844 wrote to memory of 2660	1844	cmd.exe	29
PID 2660 wrote to memory of 2512	2660	rundll32.exe	30
PID 2660 wrote to memory of 2512	2660	rundll32.exe	30
PID 2660 wrote to memory of 2512	2660	rundll32.exe	30
PID 2660 wrote to memory of 2512	2660	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\cp500.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\cp500.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2660
- - 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\encodings\cp500.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2512

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

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Downloads

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

Filesize
3KB

MD5
ca936609ebb5d157b03bc62bbd8a47a5

SHA1
0f050fe324b5d9fd5b8322e82c669c256b5c7ee1

SHA256
465dcfe02496319f56f0cf0a4534988c3636e26e95f0ddf4680f13bfd4f7ab1f

SHA512
afe9471761c348e09f33b34e90d5dece3aedb57f9972d29ea4f5d72ec378468cc4b06321319d28055d18a8a3f14a1278434b8e54995e3423d802c8eff129b15f

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