blustealer | 3f6604df64307223a9a72e68f28c14d3cbf5af90549667839622b8e3490fbe8b

General

Target

SOLICITUD DE PRESUPUESTO-21-04-23.exe
Size

176KB
MD5

6bbfbd022b3599e8e6d8876c4566073b
SHA1

b56a563f0deba1891f32866bf9385f91b3589bc0
SHA256

3f6604df64307223a9a72e68f28c14d3cbf5af90549667839622b8e3490fbe8b
SHA512

55e842618c3a9989c22fcbeff61c149f2e16e524ab23f7a28903b852ddbbe40defa9ab7931c06865c0bfd287a8a38b41032dcc62bd3aa144b6d84838b71a9ef7
SSDEEP

3072:6nI8rM4omSUr7Boj2PjY5Yo22cEuXTWcv2yMEmzQxcfxvXX4:6UunrHPym2STW0irn4

Score

10^/10

blustealer stormkitty collection spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/1000-140-0x0000000000C30000-0x0000000000C4A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 2792 set thread context of 1000	2792	Aspnet_compiler.exe	85

Checks processor information in registry 2 TTPs 2 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	AppLaunch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	Aspnet_compiler.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 4896 wrote to memory of 2792	4896	SOLICITUD DE PRESUPUESTO-21-04-23.exe	84
PID 2792 wrote to memory of 1000	2792	Aspnet_compiler.exe	85
PID 2792 wrote to memory of 1000	2792	Aspnet_compiler.exe	85
PID 2792 wrote to memory of 1000	2792	Aspnet_compiler.exe	85
PID 2792 wrote to memory of 1000	2792	Aspnet_compiler.exe	85
PID 2792 wrote to memory of 1000	2792	Aspnet_compiler.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe
"C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:1000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1000-140-0x0000000000C30000-0x0000000000C4A000-memory.dmp

Filesize
104KB

Download
memory/1000-142-0x0000000005240000-0x00000000052A6000-memory.dmp

Filesize
408KB

Download
memory/1000-143-0x0000000005C90000-0x0000000005D2C000-memory.dmp

Filesize
624KB

Download
memory/1000-145-0x0000000005230000-0x0000000005240000-memory.dmp

Filesize
64KB

Download
memory/1000-147-0x0000000005230000-0x0000000005240000-memory.dmp

Filesize
64KB

Download
memory/2792-134-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2792-137-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2792-141-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2792-146-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4896-133-0x000002254E1E0000-0x000002254E20C000-memory.dmp

Filesize
176KB

Download

Analysis

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