blustealer | e40b17b159807788ed27af5e7aae1bf4cf2d1468ff332ba51025c0c05155b44d

General

Target

Account Statement.exe
Size

646KB
MD5

af38ca383a825e106a87a4f40ac58cc3
SHA1

d4b96710edec425287ad941d72a1bb4408f5db3c
SHA256

d5b8a3cbf08b85a30f8d1f1a5af377dbe76b7aaf26f4cecbd9d731385b262e7f
SHA512

ccaf3d5af0e67ae4d27e7bcc067e825bb015a2202f08356f6a552eb1f3338845507e95892bce12f20df6c3cbaf471770a039a863c1eb5dca96cb44f414aee81b
SSDEEP

12288:8zE+JC2iNEF75euLUr1FvIXKHWcRmykYMX5b99fcruJfiRQ9Es/:IC16Z5fY1F2eWc2Vb4yJqRQ

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5509348036:AAGh2wLRoXYFDYseiCQ6lJ_YRNqlLZ6lBgg/sendMessage?chat_id=1505845388

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/2780-146-0x0000000000970000-0x000000000098A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
40	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 880 set thread context of 5104	880	Account Statement.exe	90
PID 5104 set thread context of 2780	5104	Account Statement.exe	91

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: GetForegroundWindowSpam 1 IoCs

pid	Process
5104	Account Statement.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5104	Account Statement.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 880 wrote to memory of 5104	880	Account Statement.exe	90
PID 5104 wrote to memory of 2780	5104	Account Statement.exe	91
PID 5104 wrote to memory of 2780	5104	Account Statement.exe	91
PID 5104 wrote to memory of 2780	5104	Account Statement.exe	91
PID 5104 wrote to memory of 2780	5104	Account Statement.exe	91
PID 5104 wrote to memory of 2780	5104	Account Statement.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Account Statement.exe
"C:\Users\Admin\AppData\Local\Temp\Account Statement.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\Account Statement.exe
  "C:\Users\Admin\AppData\Local\Temp\Account Statement.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5104
- - 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:2780

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/880-133-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/880-134-0x00000000055C0000-0x0000000005652000-memory.dmp

Filesize
584KB

Download
memory/880-135-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/880-136-0x0000000001550000-0x00000000015EC000-memory.dmp

Filesize
624KB

Download
memory/880-137-0x00000000092B0000-0x0000000009316000-memory.dmp

Filesize
408KB

Download
memory/880-132-0x0000000000B80000-0x0000000000C28000-memory.dmp

Filesize
672KB

Download
memory/2780-146-0x0000000000970000-0x000000000098A000-memory.dmp

Filesize
104KB

Download
memory/5104-144-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5104-141-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5104-139-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5104-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

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