blustealer | 4355bf421266b0e7eafb3de8975d4aa925363c3adfe167fa550dcf02e56b6a64

General

Target

Ziraat Bankas Swift Mesaj.exe
Size

434KB
MD5

49a315adc23495aea8ed27cfb1e74b2d
SHA1

df976bb5c6b4a444275bc45b863ef4e8e99c360e
SHA256

4355bf421266b0e7eafb3de8975d4aa925363c3adfe167fa550dcf02e56b6a64
SHA512

23d409c3638b592d94bb8dce46039a45870b79ec015892e7bf8a5892cc47d439f04cbfa4cdf7eab69619645e913c5793d15c22a349d3549e624145739943e706

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 1 IoCs

resource	yara_rule
behavioral2/memory/1152-140-0x0000000001000000-0x000000000101A000-memory.dmp	family_stormkitty

Downloads MZ/PE file

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Application.lnk	Ziraat Bankas Swift Mesaj.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\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
13	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4520 set thread context of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 3228 set thread context of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84

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 use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	Ziraat Bankas Swift Mesaj.exe
Token: SeDebugPrivilege	1152	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3228	Ziraat Bankas Swift Mesaj.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 4520 wrote to memory of 3228	4520	Ziraat Bankas Swift Mesaj.exe	82
PID 3228 wrote to memory of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84
PID 3228 wrote to memory of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84
PID 3228 wrote to memory of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84
PID 3228 wrote to memory of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84
PID 3228 wrote to memory of 1152	3228	Ziraat Bankas Swift Mesaj.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Ziraat Bankas Swift Mesaj.exe
"C:\Users\Admin\AppData\Local\Temp\Ziraat Bankas Swift Mesaj.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Users\Admin\AppData\Local\Temp\Ziraat Bankas Swift Mesaj.exe
  "C:\Users\Admin\AppData\Local\Temp\Ziraat Bankas Swift Mesaj.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3228
- - 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:1152

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/1152-140-0x0000000001000000-0x000000000101A000-memory.dmp

Filesize
104KB

Download
memory/1152-141-0x0000000005480000-0x00000000054E6000-memory.dmp

Filesize
408KB

Download
memory/3228-134-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3228-136-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3228-142-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3228-143-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4520-130-0x0000000000FC0000-0x0000000001034000-memory.dmp

Filesize
464KB

Download
memory/4520-131-0x00000000059E0000-0x0000000005A7C000-memory.dmp

Filesize
624KB

Download
memory/4520-132-0x0000000006030000-0x00000000065D4000-memory.dmp

Filesize
5.6MB

Download

Analysis

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