blustealer | d50091f2f374614a00ae73f14dabf529e887e1729da0903f59a09739f4c37e8d

General

Target

TRANSFERIR COPIA.exe
Size

337KB
MD5

9c352057471512025b97b4b824bdd553
SHA1

68c6df8e09222ae9d6df0e276bbc67389ce51e7a
SHA256

d50091f2f374614a00ae73f14dabf529e887e1729da0903f59a09739f4c37e8d
SHA512

f7a830522cb4a9a258cc6717c456bb059373cc60697e7346f5865412e18c463233899bbbe5fcc2620f183f4507e5a27b5cabf8877a8f4e1e0dbc1bc17632af7b
SSDEEP

3072:MKfM3NUHb17PyUN25RVvoyGDDcbly+shCHHS/eOPkNa971hEbaFSkjiRrP9Nq:MJUHb17KH5TQwXsoHyeGYa+

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/5040-141-0x0000000000D60000-0x0000000000D7A000-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
5	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5108 set thread context of 4332	5108	TRANSFERIR COPIA.exe	84
PID 4332 set thread context of 5040	4332	Regsvcs.exe	86

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5040	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4332	Regsvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 5108 wrote to memory of 4332	5108	TRANSFERIR COPIA.exe	84
PID 4332 wrote to memory of 5040	4332	Regsvcs.exe	86
PID 4332 wrote to memory of 5040	4332	Regsvcs.exe	86
PID 4332 wrote to memory of 5040	4332	Regsvcs.exe	86
PID 4332 wrote to memory of 5040	4332	Regsvcs.exe	86
PID 4332 wrote to memory of 5040	4332	Regsvcs.exe	86

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\TRANSFERIR COPIA.exe
"C:\Users\Admin\AppData\Local\Temp\TRANSFERIR COPIA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4332
- - 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:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 5108 -ip 5108
1⤵
PID:1208

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/4332-134-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4332-136-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4332-139-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4332-143-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5040-141-0x0000000000D60000-0x0000000000D7A000-memory.dmp

Filesize
104KB

Download
memory/5040-142-0x00000000051D0000-0x0000000005236000-memory.dmp

Filesize
408KB

Download
memory/5040-144-0x00000000011A0000-0x000000000123C000-memory.dmp

Filesize
624KB

Download
memory/5108-132-0x0000000000B20000-0x0000000000B76000-memory.dmp

Filesize
344KB

Download

Analysis

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