blustealer | cf008579e85db4d3d31c9f0b6b6f017b93191ca6c1e40c3f3b547284b50a8c47

General

Target

hesaphareketi-01.exe
Size

21KB
MD5

637f5600bc9e451058c51aa3375fd1e5
SHA1

c14318a0e020ccf5c2830940741df2cc8b8cd261
SHA256

31b24d6daaf516f5fffae5cde34c047cdeb0bcd530b4d0babb3a5b5fbdfaf06e
SHA512

50e43c6cf53dadfb3f02d69a55f809500a78ded85e8b5b8f675075c1628980905c7eb122091b3471731e10fdca29ff90c1ce50bbe2bf76e75b3b919dfb543510
SSDEEP

192:cEeTcW0iOFLfh15JKsUBSjarhF0nxcsz7Fs2WS7M6zvlRJTHhnj4OpqZndlJ4bi:cERWkLfh15JKsUBZd2Zz5TBHCZJ5H1d

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

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 4 IoCs

resource	yara_rule
behavioral1/memory/1776-72-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1776-73-0x00000000000E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1776-75-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1776-77-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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
6	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1424 set thread context of 1968	1424	hesaphareketi-01.exe	26
PID 1968 set thread context of 1776	1968	hesaphareketi-01.exe	27

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 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	hesaphareketi-01.exe
Token: SeDebugPrivilege	1776	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1968	hesaphareketi-01.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1424 wrote to memory of 1968	1424	hesaphareketi-01.exe	26
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27
PID 1968 wrote to memory of 1776	1968	hesaphareketi-01.exe	27

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.exe
  C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1968
- - 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:1776

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/1424-55-0x0000000076151000-0x0000000076153000-memory.dmp

Filesize
8KB

Download
memory/1424-56-0x00000000052B0000-0x0000000005364000-memory.dmp

Filesize
720KB

Download
memory/1424-57-0x00000000058B0000-0x0000000005942000-memory.dmp

Filesize
584KB

Download
memory/1424-54-0x00000000002B0000-0x00000000002BC000-memory.dmp

Filesize
48KB

Download
memory/1776-70-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1776-77-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1776-75-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1776-72-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1968-58-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1968-66-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1968-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1968-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1968-59-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1968-79-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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