9e071b0e06143633463b14377fd3b77cb62b5be95a0c236dcef54e5325447402

Analysis

max time kernel
102s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
24-08-2024 14:05

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General

Target

skystealer-main/builder/main.py
Size

1KB
MD5

d1cbf053305aae47d9b01d1475f78510
SHA1

2b30bd4b41fce3581515d420b38fb69de1af7dd8
SHA256

168aa0e72df036ec02b8c6597eb8a7d59163f244e5cb3df623af68852210d413
SHA512

7de74bc218fbafc321b7ef3226266c1f1ce0c8c832ab34c25e4585ae1af9a6e68dd51aa2e94194f853607383c7ac7f78774a524ebc6762955b4c84060d09604e

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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	Winword.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Winword.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Winword.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	Winword.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	Winword.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	Winword.exe

Modifies registry class 14 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\.py	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\.py\ = "py_auto_file"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file\shell	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file\shell\edit\command	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file\shell\edit\command\ = "\"C:\\Program Files\\Microsoft Office\\root\\Office16\\Winword.exe\" /n \"%1\""	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\Local Settings	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\戴▃ᬀ谀疙\ = "py_auto_file"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\户▂ᨀ蠀≀ఱˬ	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file\shell\edit\ = "@C:\\Program Files\\Microsoft Office\\root\\VFS\\ProgramFilesCommonX64\\Microsoft Shared\\Office16\\oregres.dll,-1"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\Local Settings	cmd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\户▂ᨀ蠀≀ఱˬ\ = "py_auto_file"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\戴▃ᬀ谀疙	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\py_auto_file\shell\edit	OpenWith.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1064	Winword.exe
1064	Winword.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
884	OpenWith.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
884	OpenWith.exe
1064	Winword.exe
1064	Winword.exe
1064	Winword.exe
1064	Winword.exe
1064	Winword.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 1064	884	OpenWith.exe	81
PID 884 wrote to memory of 1064	884	OpenWith.exe	81

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\skystealer-main\builder\main.py
1⤵
- Modifies registry class
PID:1956

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:884
- C:\Program Files\Microsoft Office\root\Office16\Winword.exe
  "C:\Program Files\Microsoft Office\root\Office16\Winword.exe" /n "C:\Users\Admin\AppData\Local\Temp\skystealer-main\builder\main.py"
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:1064

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TCDCC8B.tmp\iso690.xsl

Filesize
263KB

MD5
ff0e07eff1333cdf9fc2523d323dd654

SHA1
77a1ae0dd8dbc3fee65dd6266f31e2a564d088a4

SHA256
3f925e0cc1542f09de1f99060899eafb0042bb9682507c907173c392115a44b5

SHA512
b4615f995fab87661c2dbe46625aa982215d7bde27cafae221dca76087fe76da4b4a381943436fcac1577cb3d260d0050b32b7b93e3eb07912494429f126bb3d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

Filesize
16B

MD5
d29962abc88624befc0135579ae485ec

SHA1
e40a6458296ec6a2427bcb280572d023a9862b31

SHA256
a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866

SHA512
4311e87d8d5559248d4174908817a4ddc917bf7378114435cf12da8ccb7a1542c851812afbaf7dc106771bdb2e2d05f52e7d0c50d110fc7fffe4395592492c2f

Download Submit
memory/1064-0-0x00007FFDF8A70000-0x00007FFDF8A80000-memory.dmp

Filesize
64KB

Download
memory/1064-2-0x00007FFDF8A70000-0x00007FFDF8A80000-memory.dmp

Filesize
64KB

Download
memory/1064-1-0x00007FFDF8A70000-0x00007FFDF8A80000-memory.dmp

Filesize
64KB

Download
memory/1064-3-0x00007FFDF8A70000-0x00007FFDF8A80000-memory.dmp

Filesize
64KB

Download
memory/1064-4-0x00007FFDF8A70000-0x00007FFDF8A80000-memory.dmp

Filesize
64KB

Download
memory/1064-5-0x00007FFDF6730000-0x00007FFDF6740000-memory.dmp

Filesize
64KB

Download
memory/1064-6-0x00007FFDF6730000-0x00007FFDF6740000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads