blustealer | 5f062e4d8beaf7bc3b606afe8d058580b38ce33393b89a23db757ab4cf4f4576

General

Target

Consulta adjunta.exe
Size

43KB
MD5

b1f86158fada0496bed842e21913c161
SHA1

f56f230c577760aa6e8940f8582e72a9513850b5
SHA256

5f062e4d8beaf7bc3b606afe8d058580b38ce33393b89a23db757ab4cf4f4576
SHA512

8616e1de2b3fe6364da08b4860f70579f1140a1a9ac1c70d7f398917c7f7dba7b32da9fb64a191075f248f0451b3899c971629332e21ad816a8a96ed1b4ec287
SSDEEP

768:R0VcgMMJvtAG33fztRcb+AuuyXZpI7UyP2WlMzGE6h:R0jv5nJRBA03I7Pur4h

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/3376-140-0x00000000003D0000-0x00000000003EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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
6	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3664 set thread context of 4708	3664	Consulta adjunta.exe	81
PID 4708 set thread context of 3376	4708	aspnet_compiler.exe	82

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 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3664	Consulta adjunta.exe
Token: SeDebugPrivilege	3376	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4708	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 3664 wrote to memory of 4708	3664	Consulta adjunta.exe	81
PID 4708 wrote to memory of 3376	4708	aspnet_compiler.exe	82
PID 4708 wrote to memory of 3376	4708	aspnet_compiler.exe	82
PID 4708 wrote to memory of 3376	4708	aspnet_compiler.exe	82
PID 4708 wrote to memory of 3376	4708	aspnet_compiler.exe	82
PID 4708 wrote to memory of 3376	4708	aspnet_compiler.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Consulta adjunta.exe
"C:\Users\Admin\AppData\Local\Temp\Consulta adjunta.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3664
- 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:4708
- - 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:3376

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/3376-140-0x00000000003D0000-0x00000000003EA000-memory.dmp

Filesize
104KB

Download
memory/3376-141-0x0000000004B20000-0x0000000004B86000-memory.dmp

Filesize
408KB

Download
memory/3376-143-0x00000000054C0000-0x000000000555C000-memory.dmp

Filesize
624KB

Download
memory/3664-132-0x0000000000EF0000-0x0000000000F04000-memory.dmp

Filesize
80KB

Download
memory/4708-134-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4708-136-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4708-142-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4708-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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