blustealer | 4cb61e7c5bcb9bb42b09516ca92321e2a184a52eeed3274b850656f44d7b05ee

Analysis

max time kernel
151s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24/10/2022, 12:25

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General

Target
hesaphareketi-01.exe
Size 105KB
Sample221024-pllvsagdg6
SHA256 4cb61e7c5bcb9bb42b09516ca92321e2a184a52eeed3274b850656f44d7b05ee
MD5 675c1ffa6c0f559f2336334f7d69b81b
SHA1 07695f1fe96462bd4f6947973078cd0ecd5a80cb
SHA512 0c57b2dd63c423ce4755d83424e1964f9d05fc0a2390667b949501aa5e22670d7be647a664f2f18f9645c1165a43491f2c75882854a62cc298051751f7c5e371
SSDEEP 3072:Qvf3+IZ2ByFUQO7JrnQjm7szl7sC7wwx:XIZ2CUvQj9zl7I
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5468731092:AAGGNQWBVRhX622u6xp1moMhaunIGtXuIxg/sendMessage?chat_id=1639214896

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/3416-150-0x0000000000430000-0x000000000044A000-memory.dmp	family_stormkitty

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	hesaphareketi-01.exe

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\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Meayij = "\"C:\\Users\\Admin\\AppData\\Roaming\\Lestelur\\Meayij.exe\""	hesaphareketi-01.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
31	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3884 set thread context of 4884	3884	hesaphareketi-01.exe	91
PID 4884 set thread context of 3416	4884	hesaphareketi-01.exe	92

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 2 IoCs

pid	Process
536	powershell.exe
536	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3884	hesaphareketi-01.exe
Token: SeDebugPrivilege	536	powershell.exe
Token: SeDebugPrivilege	3416	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4884	hesaphareketi-01.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3884 wrote to memory of 536	3884	hesaphareketi-01.exe	85
PID 3884 wrote to memory of 536	3884	hesaphareketi-01.exe	85
PID 3884 wrote to memory of 536	3884	hesaphareketi-01.exe	85
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 3884 wrote to memory of 4884	3884	hesaphareketi-01.exe	91
PID 4884 wrote to memory of 3416	4884	hesaphareketi-01.exe	92
PID 4884 wrote to memory of 3416	4884	hesaphareketi-01.exe	92
PID 4884 wrote to memory of 3416	4884	hesaphareketi-01.exe	92
PID 4884 wrote to memory of 3416	4884	hesaphareketi-01.exe	92
PID 4884 wrote to memory of 3416	4884	hesaphareketi-01.exe	92

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\hesaphareketi-01.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3884
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:536
- 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:4884
- - 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:3416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

memory/536-140-0x0000000007880000-0x0000000007EFA000-memory.dmp

Download

memory/536-135-0x0000000002880000-0x00000000028B6000-memory.dmp

Download

memory/536-136-0x0000000005490000-0x0000000005AB8000-memory.dmp

Download

memory/536-137-0x00000000052A0000-0x0000000005306000-memory.dmp

Download

memory/536-138-0x0000000005310000-0x0000000005376000-memory.dmp

Download

memory/536-139-0x0000000006230000-0x000000000624E000-memory.dmp

Download

memory/536-141-0x0000000006720000-0x000000000673A000-memory.dmp

Download

memory/3416-151-0x0000000005120000-0x00000000051BC000-memory.dmp

Download

memory/3416-150-0x0000000000430000-0x000000000044A000-memory.dmp

Download

memory/3884-133-0x0000000005880000-0x00000000058A2000-memory.dmp

Download

memory/3884-132-0x00000000001D0000-0x00000000001F0000-memory.dmp

Download

memory/4884-148-0x0000000000400000-0x0000000000422000-memory.dmp

Download

memory/4884-145-0x0000000000400000-0x0000000000422000-memory.dmp

Download

memory/4884-143-0x0000000000400000-0x0000000000422000-memory.dmp

Download

memory/4884-152-0x0000000000400000-0x0000000000422000-memory.dmp

Download