blustealer | 430a9487d85e5998d134ca3a890e0c6ff86101264d1fc4ae869953fac0755c3e

General

Target

SecuriteInfo.com.Win32.PWSX-gen.22789.exe
Size

788KB
MD5

dac9ddfbf75bd8ddda349414e66db972
SHA1

2b9069eea5a71be7bcacda31830174ef6364ea2c
SHA256

430a9487d85e5998d134ca3a890e0c6ff86101264d1fc4ae869953fac0755c3e
SHA512

a66c0454aa430ff27765a79dfcae7c5903d3ff7928d54e68cbc51287583027b45beb9612fd7f9cf2d10801adf418c08dac0a9da0d82d725b75f44077334756c4
SSDEEP

6144:x5+DIIVITsctz2d1vtvLcUFCkkX6SgS1y9uWnK14susBUaPNLL7+5QQk+orNLJlO:x4kIVczM1fPkr1e9BsXBLyuQX8nDO/

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5415235188:AAGqakDD6FZcw5LLX6hH5qVayV-1OGURlEo/sendMessage?chat_id=1372472614

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/1756-74-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1756-75-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1756-77-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1756-79-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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 1308 set thread context of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 764 set thread context of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28

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
1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe
1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe
Token: SeDebugPrivilege	1756	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 1308 wrote to memory of 764	1308	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	27
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28
PID 764 wrote to memory of 1756	764	SecuriteInfo.com.Win32.PWSX-gen.22789.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22789.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22789.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22789.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22789.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:764
- - 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:1756

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

Loading Replay Monitor...

Downloads

memory/764-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-81-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/764-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1308-58-0x0000000005E30000-0x0000000005EB2000-memory.dmp

Filesize
520KB

Download
memory/1308-59-0x00000000009F0000-0x0000000000A1A000-memory.dmp

Filesize
168KB

Download
memory/1308-54-0x0000000000D00000-0x0000000000DCA000-memory.dmp

Filesize
808KB

Download
memory/1308-57-0x00000000004F0000-0x00000000004FC000-memory.dmp

Filesize
48KB

Download
memory/1308-56-0x00000000004E0000-0x00000000004F6000-memory.dmp

Filesize
88KB

Download
memory/1308-55-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1756-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1756-74-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1756-77-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1756-79-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing