blustealer | 1d9598ad9d7e41bd0513c7d263c805fb0598f18c7c69e3997bd109c1e058f212

General

Target

Doc899780979080888.pdf.exe
Size

710KB
MD5

1156288fa7b4504d394e7006ce7eb902
SHA1

75225ebadb39e96e97c5a0c859ae6044f873a524
SHA256

1d9598ad9d7e41bd0513c7d263c805fb0598f18c7c69e3997bd109c1e058f212
SHA512

92a7cdb3242dad94e9f0c2bcb72cfeec17817e98c7485798e572a2cac8cf3ad48e069f425a03684fa9705c53332dee3433cc358b89da43103fb9bf0cf4457076

Score

10^/10

blustealer stormkitty collection spyware 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/4212-146-0x0000000000560000-0x000000000057A000-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\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
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\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
19	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 1264	2228	Doc899780979080888.pdf.exe	82
PID 1264 set thread context of 4212	1264	Doc899780979080888.pdf.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 behavior: EnumeratesProcesses 7 IoCs

pid	Process
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	Doc899780979080888.pdf.exe
Token: SeDebugPrivilege	4212	AppLaunch.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2228	Doc899780979080888.pdf.exe
2228	Doc899780979080888.pdf.exe
1264	Doc899780979080888.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 2228 wrote to memory of 1264	2228	Doc899780979080888.pdf.exe	82
PID 1264 wrote to memory of 4212	1264	Doc899780979080888.pdf.exe	83
PID 1264 wrote to memory of 4212	1264	Doc899780979080888.pdf.exe	83
PID 1264 wrote to memory of 4212	1264	Doc899780979080888.pdf.exe	83
PID 1264 wrote to memory of 4212	1264	Doc899780979080888.pdf.exe	83
PID 1264 wrote to memory of 4212	1264	Doc899780979080888.pdf.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\Doc899780979080888.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Doc899780979080888.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\Doc899780979080888.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Doc899780979080888.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1264
- - 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:4212

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

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1264-144-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1264-139-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1264-141-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1264-147-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2228-133-0x0000000005D80000-0x0000000006324000-memory.dmp

Filesize
5.6MB

Download
memory/2228-134-0x00000000057D0000-0x0000000005862000-memory.dmp

Filesize
584KB

Download
memory/2228-135-0x0000000005780000-0x000000000578A000-memory.dmp

Filesize
40KB

Download
memory/2228-136-0x00000000096C0000-0x000000000975C000-memory.dmp

Filesize
624KB

Download
memory/2228-137-0x0000000007AD0000-0x0000000007B36000-memory.dmp

Filesize
408KB

Download
memory/2228-132-0x0000000000D10000-0x0000000000DC6000-memory.dmp

Filesize
728KB

Download
memory/4212-146-0x0000000000560000-0x000000000057A000-memory.dmp

Filesize
104KB

Download

Analysis

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