blustealer | d757a473268b029ee5f0d485c13345d4714da5d7b2e9d73e7f2e0ca9162a2730

General

Target

RFQ___PR.exe
Size

882KB
MD5

366d5916e23f30ccffc121c1cc4d64b6
SHA1

14eeba07231bb2865bb6a8cc4449aaded5f39ce0
SHA256

d757a473268b029ee5f0d485c13345d4714da5d7b2e9d73e7f2e0ca9162a2730
SHA512

186a27cdda19515b93475291a9ad8ea2033b0035214594e41531894f07ed56f4cf662f4aadd7b1e1d3264a80f53d3e7a8a0ea1bf5adb3a56e02411732b79df29

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

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/3728-146-0x0000000000B20000-0x0000000000B3A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

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
26	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2364 set thread context of 4612	2364	RFQ___PR.exe	82
PID 4612 set thread context of 3728	4612	RFQ___PR.exe	83

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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	3728	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4612	RFQ___PR.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 2364 wrote to memory of 4612	2364	RFQ___PR.exe	82
PID 4612 wrote to memory of 3728	4612	RFQ___PR.exe	83
PID 4612 wrote to memory of 3728	4612	RFQ___PR.exe	83
PID 4612 wrote to memory of 3728	4612	RFQ___PR.exe	83
PID 4612 wrote to memory of 3728	4612	RFQ___PR.exe	83
PID 4612 wrote to memory of 3728	4612	RFQ___PR.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ___PR.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ___PR.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\RFQ___PR.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ___PR.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4612
- - 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:3728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2364-133-0x00000000054E0000-0x0000000005A84000-memory.dmp

Filesize
5.6MB

Download
memory/2364-134-0x0000000004FD0000-0x0000000005062000-memory.dmp

Filesize
584KB

Download
memory/2364-135-0x0000000004F60000-0x0000000004F6A000-memory.dmp

Filesize
40KB

Download
memory/2364-136-0x0000000008790000-0x000000000882C000-memory.dmp

Filesize
624KB

Download
memory/2364-137-0x000000000B0F0000-0x000000000B156000-memory.dmp

Filesize
408KB

Download
memory/2364-132-0x00000000004B0000-0x0000000000592000-memory.dmp

Filesize
904KB

Download
memory/3728-146-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/4612-144-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4612-141-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4612-139-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4612-147-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download

Analysis

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