blustealer | 4d34911cc6d9d7b6f8eb4e43a384995af24479a2f7b9c902d26a584aeb460780

General

Target

b0e9448560ee599a965956a5efb0227b.exe
Size

278KB
MD5

b0e9448560ee599a965956a5efb0227b
SHA1

b5eb428385e2e3f47989b3c799e299766c64322a
SHA256

4d34911cc6d9d7b6f8eb4e43a384995af24479a2f7b9c902d26a584aeb460780
SHA512

173c469ae4c0bc88c5a57c65e78f970b1b1e04c35c671380df1b2f8c1fdb359b8772e1b5b9acde283f2af4e9fcb3dc7e25232c833da9982df7be2c017226de03
SSDEEP

3072:I54a/hIdKf8TfmRgq2QI39d7P3pjTvcEOgDX/hA45baARY5MtF9vdRzQKlfsB0Ni:cpudlTfLF5v1A4xav5YpdaKldfhfoq2

Score

10^/10

blustealer collection evasion stealer themida trojan

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5351997584:AAEyh4aj9rNp8tJtHYZqoYG-PSzq-z5M18M/sendMessage?chat_id=1374455932

Signatures

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b0e9448560ee599a965956a5efb0227b.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b0e9448560ee599a965956a5efb0227b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b0e9448560ee599a965956a5efb0227b.exe

Themida packer 16 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1796-58-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-60-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-61-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-62-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-63-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-64-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-66-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-69-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-71-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-73-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-72-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-74-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-75-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-76-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-78-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida
behavioral1/memory/1796-92-0x0000000000400000-0x0000000000AC1000-memory.dmp	themida

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b0e9448560ee599a965956a5efb0227b.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1796	b0e9448560ee599a965956a5efb0227b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 1796 set thread context of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	b0e9448560ee599a965956a5efb0227b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1796	b0e9448560ee599a965956a5efb0227b.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 2024 wrote to memory of 1796	2024	b0e9448560ee599a965956a5efb0227b.exe	26
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27
PID 1796 wrote to memory of 908	1796	b0e9448560ee599a965956a5efb0227b.exe	27

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\b0e9448560ee599a965956a5efb0227b.exe
"C:\Users\Admin\AppData\Local\Temp\b0e9448560ee599a965956a5efb0227b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\b0e9448560ee599a965956a5efb0227b.exe
  "C:\Users\Admin\AppData\Local\Temp\b0e9448560ee599a965956a5efb0227b.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1796
- - 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:908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/908-82-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/908-91-0x0000000004850000-0x000000000490C000-memory.dmp

Filesize
752KB

Download
memory/908-89-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/908-87-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/908-84-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1796-73-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-75-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-63-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-64-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-66-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-69-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-71-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-93-0x0000000077BB0000-0x0000000077D30000-memory.dmp

Filesize
1.5MB

Download
memory/1796-72-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-74-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-62-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-76-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-77-0x0000000077BB0000-0x0000000077D30000-memory.dmp

Filesize
1.5MB

Download
memory/1796-78-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-81-0x0000000000401000-0x0000000000468000-memory.dmp

Filesize
412KB

Download
memory/1796-61-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-60-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-58-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-57-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/1796-92-0x0000000000400000-0x0000000000AC1000-memory.dmp

Filesize
6.8MB

Download
memory/2024-55-0x0000000075F81000-0x0000000075F83000-memory.dmp

Filesize
8KB

Download
memory/2024-56-0x0000000000390000-0x00000000003B4000-memory.dmp

Filesize
144KB

Download
memory/2024-54-0x0000000000BE0000-0x0000000000C2C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads