blustealer | fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23

General

Target

technical spec_pdf.exe
Size

964KB
MD5

d5a045e300184028b6a6dfc75a303307
SHA1

5fc5a4a17bc5ad2e7ee4da563d5a348c618c0cf9
SHA256

fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23
SHA512

0fb4fe0cc538995303669b8a3bb1576c0c462caee47ff2c8c2545ea760c21a4f9a36be8600295f9ea98034afc313cc63de2940b21013a04ad2d29070b539dae1
SSDEEP

24576:5MaB1dLvo9yPmx0k6F9FkjefS/cIXVaUys/FvV:5pB1Zw9yPk6fFkjCihllFv

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

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-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1132 set thread context of 572	1132	technical spec_pdf.exe	28
PID 572 set thread context of 1748	572	technical spec_pdf.exe	29

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
572	technical spec_pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 1132 wrote to memory of 572	1132	technical spec_pdf.exe	28
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29
PID 572 wrote to memory of 1748	572	technical spec_pdf.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\technical spec_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\technical spec_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Users\Admin\AppData\Local\Temp\technical spec_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\technical spec_pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:572
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - outlook_office_path
    - outlook_win_path
    PID:1748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/572-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-70-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/572-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/572-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1132-59-0x0000000005E80000-0x0000000005F06000-memory.dmp

Filesize
536KB

Download
memory/1132-54-0x00000000009F0000-0x0000000000AE8000-memory.dmp

Filesize
992KB

Download
memory/1132-58-0x0000000005BD0000-0x0000000005C8A000-memory.dmp

Filesize
744KB

Download
memory/1132-57-0x0000000000490000-0x000000000049C000-memory.dmp

Filesize
48KB

Download
memory/1132-56-0x0000000000410000-0x0000000000422000-memory.dmp

Filesize
72KB

Download
memory/1132-55-0x0000000000600000-0x0000000000640000-memory.dmp

Filesize
256KB

Download
memory/1748-71-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/1748-72-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1748-73-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/1748-75-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/1748-77-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/1748-78-0x00000000048B0000-0x000000000496C000-memory.dmp

Filesize
752KB

Download

Analysis

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