blustealer | 35cd45fe0886a34247586537bf5b1aed29f5a8e40cb7055f715e052e9084543a

General

Target

SOLICITU.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 3 IoCs

resource	yara_rule
behavioral1/memory/1364-68-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1364-70-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1364-72-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\15.0\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 1204 set thread context of 2024	1204	SOLICITU.exe	28
PID 2024 set thread context of 1364	2024	Aspnet_compiler.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	1364	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2024	Aspnet_compiler.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 1204 wrote to memory of 2024	1204	SOLICITU.exe	28
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29
PID 2024 wrote to memory of 1364	2024	Aspnet_compiler.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SOLICITU.exe
"C:\Users\Admin\AppData\Local\Temp\SOLICITU.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1204
- 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:2024
- - 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:1364

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/1204-54-0x0000000000C60000-0x0000000000C8C000-memory.dmp

Filesize
176KB

Download
memory/1204-55-0x0000000000740000-0x0000000000750000-memory.dmp

Filesize
64KB

Download
memory/1364-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1364-67-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1364-74-0x0000000000E70000-0x0000000000EB0000-memory.dmp

Filesize
256KB

Download
memory/1364-70-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1364-68-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1364-66-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/2024-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2024-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-73-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2024-75-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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