blustealer | 2178c25cf14793aa8845ca8ee9f76d3271c91bc5eb763e97919415f9fb7d5e1d

General

Target

S0LICITUDDEPRESUPUESTO240423.exe
Size

211KB
MD5

f4a13d7f220fd8db56fafbdb62828a50
SHA1

ed98f720d6481db8d45aba7a3889d9974902d437
SHA256

2178c25cf14793aa8845ca8ee9f76d3271c91bc5eb763e97919415f9fb7d5e1d
SHA512

0d6cd19ccc47a28491f5cd442a32ec83183cc093835913cf7ca94ac679609ce648c2f15d3a11722d35d2fd5cff943abe7c073639d32e49ea294e88360cd811ac
SSDEEP

3072:i748SBjtujuYWofGa2OTeyGuPMZmzsq9Y2YhuhWDNJQZ5hJ8RDMh/CQgutfxvXX4:i7MOuYCduEZ8sq9Y2RWfWMRI9Ocn4

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 3 IoCs

resource	yara_rule
behavioral1/memory/472-68-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/472-70-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/472-72-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\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
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

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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1912 set thread context of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1880 set thread context of 472	1880	Caspol.exe	28

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	472	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1880	Caspol.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1912 wrote to memory of 1880	1912	S0LICITUDDEPRESUPUESTO240423.exe	27
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28
PID 1880 wrote to memory of 472	1880	Caspol.exe	28

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\S0LICITUDDEPRESUPUESTO240423.exe
"C:\Users\Admin\AppData\Local\Temp\S0LICITUDDEPRESUPUESTO240423.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1912
- 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:1880
- - 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:472

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

Loading Replay Monitor...

Downloads

memory/472-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-66-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-67-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/472-76-0x0000000004EE0000-0x0000000004F20000-memory.dmp

Filesize
256KB

Download
memory/472-68-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-74-0x0000000004EE0000-0x0000000004F20000-memory.dmp

Filesize
256KB

Download
memory/472-70-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1880-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-73-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1880-75-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1880-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1912-55-0x0000000000150000-0x0000000000160000-memory.dmp

Filesize
64KB

Download
memory/1912-54-0x0000000000E30000-0x0000000000E64000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing