blustealer | 6a9f7792c2ea3a19038cc5d8cfbe4a1edcba5750bc3a0cd6dae8092b6bdae485

General

Target

Transferir copia.exe
Size

310KB
MD5

9decc19fa8275a1ee248dd78443e5142
SHA1

9ae643a82fd28cb70f2bdbfa571d3306c36a0563
SHA256

6a9f7792c2ea3a19038cc5d8cfbe4a1edcba5750bc3a0cd6dae8092b6bdae485
SHA512

fe67559ded199fffd1c8e56b068af0f0337d81d8ce9e196a9232c0ba23033e28422aa6f118b60d5b83d7f843a93150091c3ba9e68518ada0b6c4c02fc468853e
SSDEEP

3072:KA4ShYRtM95ZNqhWR2UTx39u77zNTW+9lvAY4lQXeMAXO271hEbaFSkjiRrP+Fq:tmY5WsBqvA0veyXeYa+

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/1192-69-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1192-70-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1192-72-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1192-74-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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 1688 set thread context of 1600	1688	Transferir copia.exe	28
PID 1600 set thread context of 1192	1600	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 behavior: EnumeratesProcesses 1 IoCs

pid	Process
1688	Transferir copia.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	Transferir copia.exe
Token: SeDebugPrivilege	1192	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1600	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1668	1688	Transferir copia.exe	27
PID 1688 wrote to memory of 1668	1688	Transferir copia.exe	27
PID 1688 wrote to memory of 1668	1688	Transferir copia.exe	27
PID 1688 wrote to memory of 1668	1688	Transferir copia.exe	27
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1688 wrote to memory of 1600	1688	Transferir copia.exe	28
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29
PID 1600 wrote to memory of 1192	1600	aspnet_compiler.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Transferir copia.exe
"C:\Users\Admin\AppData\Local\Temp\Transferir copia.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:1668
- 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:1600
- - 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:1192

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/1192-67-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1192-74-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1192-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1192-69-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1600-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-66-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1600-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-76-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1600-77-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1688-54-0x0000000000FA0000-0x0000000000FF0000-memory.dmp

Filesize
320KB

Download

Analysis

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