blustealer | 7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc

General

Target

7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe
Size

568KB
MD5

62d82f1dfb55dde5554c8b278a819ac9
SHA1

01e84f817807005f8d557d5320ddf9c366486620
SHA256

7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc
SHA512

e1e629f928a1596325af166a50248794d0a4c8129442b25dd514a5ec6e9eef39c1d8867db6f85a72ffd3f0aa349c28af7ff70dd58027f8a04e15a8cb491a1d54
SSDEEP

12288:M3Ih6jMEb6Qyxao8Fhyq+rqSAl4zXh2J3Fi7mX/IkQkk36EZd/gnS9ZviI:W9Jb6Q28Fu9AvPI2k71fB

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5373590229:AAH5_bJ0JuiFbSG6WQwntRz245ybC0mPk0/sendMessage?chat_id=2005009509

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/1572-73-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1572-74-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1572-76-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1572-78-0x0000000000090000-0x00000000000AA000-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\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
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1940 set thread context of 1572	1940	MSBuild.exe	27

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	1572	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1940	MSBuild.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1504 wrote to memory of 1940	1504	7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe	26
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.exe	27
PID 1940 wrote to memory of 1572	1940	MSBuild.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\7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe
"C:\Users\Admin\AppData\Local\Temp\7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1940
- - 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:1572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1504-54-0x0000000000D90000-0x0000000000E24000-memory.dmp

Filesize
592KB

Download
memory/1504-55-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1504-56-0x0000000000310000-0x000000000031A000-memory.dmp

Filesize
40KB

Download
memory/1504-57-0x0000000005D50000-0x0000000005DC6000-memory.dmp

Filesize
472KB

Download
memory/1504-58-0x0000000000AC0000-0x0000000000AEA000-memory.dmp

Filesize
168KB

Download
memory/1572-73-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1572-71-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1572-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1572-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1940-60-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-59-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-64-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-67-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-62-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-80-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1940-81-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download

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