c63eeb3e872b93ebce0ff49a3524133dc099017763c73dfe3779ee031f525053

Analysis

max time kernel
65s
max time network
30s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
submitted
27-06-2023 13:38

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General

Target

cstealer-main/builder.py
Size

5KB
MD5

9ebd98f577d60b13f01c942db38332c8
SHA1

e99ac33ed1a47bad424d9ffd58c2dc5b012e122a
SHA256

3fa48b3dd6c7d05d800377676e819144441ea01ef206ee83c66dfb2a869eee17
SHA512

382de898e96f43ba05e5658915883f0af0eb7eabdb0c53a253ac9d29d8826c3c6012d7ead97faf1f65b726196a158c9074a0d73400bb455a420095fca6fb915e
SSDEEP

96:XqxFkY94CuOyIs/CMwBh4IO3kY94CuOyIs/CMwBh8IIZfY7DGZ2oEyI4GpYt3b:IFkY94CuOyIs/CMwBhu3kY94CuOyIs/r

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_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-1-5-21-3465915139-4244146034-2076118314-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3465915139-4244146034-2076118314-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1004	AcroRd32.exe
1004	AcroRd32.exe
1004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1092	1924	cmd.exe	29
PID 1924 wrote to memory of 1092	1924	cmd.exe	29
PID 1924 wrote to memory of 1092	1924	cmd.exe	29
PID 1092 wrote to memory of 1004	1092	rundll32.exe	30
PID 1092 wrote to memory of 1004	1092	rundll32.exe	30
PID 1092 wrote to memory of 1004	1092	rundll32.exe	30
PID 1092 wrote to memory of 1004	1092	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cstealer-main\builder.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cstealer-main\builder.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1092
- - 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\cstealer-main\builder.py"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1004

Network

MITRE ATT&CK Enterprise v6

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
41d6fcb5f4e197d36266286fa3fe4d3a

SHA1
0262c215f37d76f070976296852e69fbd3fc4f99

SHA256
449bfb8d454ac1b138035df72d14a296ec3efe82d0b093950a6eda9eadbd2f73

SHA512
ee45f4a5749b3c985ec2d5d241fc93af337375bc3b4909259930a6782d03f05863977145d92ca6d6e674d1f6d3d1bdf00e425cfcec9bb9d14aa12952eb2eafe0

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