blustealer | 7cde481029d0f331c932ffb79f04c8113ab6d5b36bbd4cc18f4c54b086910b58

Resubmissions

20-12-2022 23:15

221220-28xl1sbc85 10

20-12-2022 06:45

221220-hh292aca3v 10

Analysis

max time kernel
150s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2022 06:45

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General

Target

FACTURA.exe
Size

164KB
MD5

ed569d6f146f9101293b60dee2e726f6
SHA1

24a5c1579b090e1f8c9a5ff128f9545542fa8a69
SHA256

7cde481029d0f331c932ffb79f04c8113ab6d5b36bbd4cc18f4c54b086910b58
SHA512

36820914cd1605f058a97ecaf2ce5af808648a533abcbb3d5d567f9fc4978d6acc056d28eb629299785b6064481b74f760744c6d8acefb05d8ddb8de3edea974
SSDEEP

3072:DGpmGTuaBefnv1TkuFDMyDGdV0j/uwmyJ+aXE/8brg0TKC0gDm6:qLuaQfv1TkuFDMyD6V0zusJRklI

Score

10^/10

blustealer stormkitty collection spyware stealer

Malware Config

Extracted

Family

blustealer

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/804-141-0x0000000000900000-0x000000000091A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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
18	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4564 set thread context of 3036	4564	FACTURA.exe	84
PID 3036 set thread context of 804	3036	Caspol.exe	85

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	804	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3036	Caspol.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 4564 wrote to memory of 3036	4564	FACTURA.exe	84
PID 3036 wrote to memory of 804	3036	Caspol.exe	85
PID 3036 wrote to memory of 804	3036	Caspol.exe	85
PID 3036 wrote to memory of 804	3036	Caspol.exe	85
PID 3036 wrote to memory of 804	3036	Caspol.exe	85
PID 3036 wrote to memory of 804	3036	Caspol.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\FACTURA.exe
"C:\Users\Admin\AppData\Local\Temp\FACTURA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4564
- 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:3036
- - 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:804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/804-141-0x0000000000900000-0x000000000091A000-memory.dmp

Filesize
104KB

Download
memory/804-142-0x0000000004F80000-0x0000000004FE6000-memory.dmp

Filesize
408KB

Download
memory/804-143-0x0000000005A20000-0x0000000005ABC000-memory.dmp

Filesize
624KB

Download
memory/3036-133-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3036-136-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3036-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4564-132-0x000001CF2A180000-0x000001CF2A1A8000-memory.dmp

Filesize
160KB

Download
memory/4564-138-0x00007FF98FDF0000-0x00007FF9908B1000-memory.dmp

Filesize
10.8MB

Download