blustealer | 9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45

Analysis

max time kernel
150s
max time network
89s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
10/10/2022, 11:40

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General

Target
9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe
Size 780KB
Sample221010-nsv7csbfd7
SHA256 9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45
MD5 a4d36cd35902d578b47f4df2fc122f89
SHA1 2786e84c4f4a32a2113061c4798109f78e36f001
SHA512 76fd3ed7609deb143e4c490bb40defc5473d9e164cda1bc9e2d3b58ecbb9b9d7cad52696503e3ef7d17a13797eedd734d6e8f1c9dbe8ccb0da1183d2426921da
SSDEEP 12288:i/8LhfMZtCa6VjHv06y62IfpsrQxq6naK9A4Sp:TlTfp2IsAlna2Sp
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5412597166:AAGUaWxuTxxhNb-NRhiURcTMzuW9nhGoEs/sendMessage?chat_id=932962718

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/548-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/548-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/548-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/548-83-0x0000000000090000-0x00000000000AA000-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\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1516 set thread context of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 912 set thread context of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1336	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1612	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	powershell.exe
Token: SeDebugPrivilege	548	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 1612	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	27
PID 1516 wrote to memory of 1612	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	27
PID 1516 wrote to memory of 1612	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	27
PID 1516 wrote to memory of 1612	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	27
PID 1516 wrote to memory of 1336	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	29
PID 1516 wrote to memory of 1336	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	29
PID 1516 wrote to memory of 1336	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	29
PID 1516 wrote to memory of 1336	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	29
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 1516 wrote to memory of 912	1516	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	31
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32
PID 912 wrote to memory of 548	912	9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe	32

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\9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe
"C:\Users\Admin\AppData\Local\Temp\9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HDtIhBGvY.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1612
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HDtIhBGvY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A15.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1336
- C:\Users\Admin\AppData\Local\Temp\9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe
  "C:\Users\Admin\AppData\Local\Temp\9980dfcbb40e06f805dc8ad0d33d5ba063bf914e54f15f3b42d16aa494eafc45.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:912
- - 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:548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmp3A15.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp3A15.tmp
Size 1KB
SHA256 e5b5446a084cc527873b099c0a7024935d081333119e932bbeb506ae08a2caf1
MD5 3e75fbabdcea14a89e37134f5c96581f
SHA1 d5ae2be9d4dc1b3e05f55c3beda80dc3518283ef
SHA512 f596582bf78fe7c7fece14cd31813d32d82e7e313ae0029e1216b47980e3fa8cae674d8fe721d1fadc9d91a1ca79b5dbf91cef4804b186f2aed31c22fb2bb09e
MD5 SHA1 SHA512

Submit Download

memory/548-83-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/548-81-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/548-78-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/548-76-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/912-88-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-64-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-65-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-67-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-85-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-69-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/912-72-0x0000000000400000-0x0000000000425000-memory.dmp

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memory/1516-55-0x0000000075841000-0x0000000075843000-memory.dmp

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memory/1516-58-0x0000000005AA0000-0x0000000005B22000-memory.dmp

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memory/1516-57-0x00000000007D0000-0x00000000007DC000-memory.dmp

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memory/1516-56-0x0000000000650000-0x0000000000664000-memory.dmp

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memory/1516-54-0x0000000000870000-0x0000000000938000-memory.dmp

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memory/1516-63-0x0000000004E90000-0x0000000004EBC000-memory.dmp

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memory/1612-86-0x0000000074220000-0x00000000747CB000-memory.dmp

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memory/1612-87-0x0000000074220000-0x00000000747CB000-memory.dmp

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