blustealer | 11d64db2c2dd610cd7ccdd45f9a985a23cfd8ae488b98ec809c6e4c98aef7b68

General

Target

detalle_transferencia_2022-12-13.exe
Size

665KB
MD5

7a4e0ebd1451bb30a7268f0a08c32203
SHA1

5075d132fa62466cf91a1776083787cab436a0fc
SHA256

11d64db2c2dd610cd7ccdd45f9a985a23cfd8ae488b98ec809c6e4c98aef7b68
SHA512

19021df5718121ebeb62c3f5e644d47e5f796ebe75510209feb8da0a8a4e021cbff13d4ed066c9be68e638d2c83e2ab4fcf464d19755101c66f89c994a05018c
SSDEEP

12288:9xqPrJapZe3pJzpgabWvRF41FAGkZyGxXf0ClJLrk:9ETJapw53AECPXf0ClNrk

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 4 IoCs

resource	yara_rule
behavioral1/memory/376-71-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/376-72-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/376-74-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/376-76-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\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 1380 set thread context of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1756 set thread context of 376	1756	Caspol.exe	29

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	376	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1756	Caspol.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1380 wrote to memory of 1756	1380	detalle_transferencia_2022-12-13.exe	28
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29
PID 1756 wrote to memory of 376	1756	Caspol.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\detalle_transferencia_2022-12-13.exe
"C:\Users\Admin\AppData\Local\Temp\detalle_transferencia_2022-12-13.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1756
- - 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:376

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/376-69-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/376-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/376-74-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/376-71-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1380-55-0x00000000001D0000-0x00000000001DA000-memory.dmp

Filesize
40KB

Download
memory/1380-54-0x0000000001170000-0x0000000001218000-memory.dmp

Filesize
672KB

Download
memory/1756-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-67-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/1756-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1756-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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