blustealer | 6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc

Analysis

max time kernel
162s
max time network
189s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2023 10:16

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General

Target

6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe
Size

427KB
MD5

15ecb5efcdd1da60edf5920c2fdcd515
SHA1

8e2fa7988cc4a7afa34e8d2e3268ffa76bf51e4d
SHA256

6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc
SHA512

24c97b2f2aae8e706bf9ae46e4d4a7ebef4ef72a838c06f91aa0cce866fd80bc2fe4424aeb3c5800e1d5bcd53ebb203149deea576a39c53b46732cb95c0395f1
SSDEEP

12288:obWnxfgsRL4u/1AlLK6FRY2n8OPKxGvYmB:osxgsRftD0C2nKG

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5916787654:AAEJEadEk6VSBHL82vTGRS9aaNuh-zG53Rg/sendMessage?chat_id=5483672364

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 624 set thread context of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	17	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81
PID 624 wrote to memory of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81
PID 624 wrote to memory of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81
PID 624 wrote to memory of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81
PID 624 wrote to memory of 1460	624	6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe	81

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe
"C:\Users\Admin\AppData\Local\Temp\6c922a791609e332501e499c78283d9d98a413c8a16cebc66603c917eeb9e3bc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - outlook_office_path
  - outlook_win_path
  PID:1460

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/624-133-0x0000000000400000-0x000000000046C9E0-memory.dmp

Filesize
434KB

Download
memory/624-148-0x0000000000400000-0x000000000046C9E0-memory.dmp

Filesize
434KB

Download
memory/1460-136-0x0000000000FB0000-0x0000000001016000-memory.dmp

Filesize
408KB

Download
memory/1460-137-0x0000000005750000-0x00000000057EC000-memory.dmp

Filesize
624KB

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