blustealer | dfd1179ad73ebb13661fe68ec9276f503563ec578c20c1e6489e2d3666deb4cb

General

Target

Swift.txt.exe
Size

670KB
MD5

2de023032f1f87a7ed648c32fcf484df
SHA1

17be3627191cd82331a205cd3eca02380d541aba
SHA256

dfd1179ad73ebb13661fe68ec9276f503563ec578c20c1e6489e2d3666deb4cb
SHA512

0a628ebde05eb454fbbb3898b166830d98e7bc0862bbc0ef3e55ace668604c4eabd607d6012608a3a465a2dc5e7aaf9f8e778fd1ae61feacdc9542f78069bed5

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

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/1304-74-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1304-75-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1304-77-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1304-79-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\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
6	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1920 set thread context of 1540	1920	Swift.txt.exe	27
PID 1540 set thread context of 1304	1540	Swift.txt.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 6 IoCs

pid	Process
1920	Swift.txt.exe
1920	Swift.txt.exe
1920	Swift.txt.exe
1920	Swift.txt.exe
1920	Swift.txt.exe
1920	Swift.txt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1920	Swift.txt.exe
Token: SeDebugPrivilege	1304	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1540	Swift.txt.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1920 wrote to memory of 1540	1920	Swift.txt.exe	27
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28
PID 1540 wrote to memory of 1304	1540	Swift.txt.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Swift.txt.exe
"C:\Users\Admin\AppData\Local\Temp\Swift.txt.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\Temp\Swift.txt.exe
  "C:\Users\Admin\AppData\Local\Temp\Swift.txt.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1540
- - 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:1304

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/1304-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1304-79-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1304-77-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1304-74-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1540-63-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-81-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-61-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-82-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-65-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-68-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1540-60-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1920-59-0x00000000050A0000-0x00000000050D8000-memory.dmp

Filesize
224KB

Download
memory/1920-57-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/1920-56-0x0000000000510000-0x0000000000526000-memory.dmp

Filesize
88KB

Download
memory/1920-55-0x0000000075CB1000-0x0000000075CB3000-memory.dmp

Filesize
8KB

Download
memory/1920-58-0x00000000045F0000-0x0000000004672000-memory.dmp

Filesize
520KB

Download
memory/1920-54-0x0000000000890000-0x000000000093E000-memory.dmp

Filesize
696KB

Download

Analysis

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