blustealer | 3f3f17de70e897ba762f6a6073b6716a4fc01e04ea0038a4f01ce7842c7d8a74

General

Target

ziraat bankasi swift mesaji.exe
Size

213KB
MD5

50ae452a762aae14ccab1d1e56983307
SHA1

1fe167e21638f2891585d7e1498160e3d3720594
SHA256

3f3f17de70e897ba762f6a6073b6716a4fc01e04ea0038a4f01ce7842c7d8a74
SHA512

9c36098e536cd242f99ba1eeb5a4606a823e95aef7d0d854e26bca9945cb134c9e8d9e137b63638aea985e23e6a82c9c8c061b3b1b56769f832b1ce9c1d9a8b1
SSDEEP

3072:GB0z1qxbki54KcMcc+4bIsJUWGTBPZFyfShcP:GB0z1qU7c+4Hql

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

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/1060-152-0x0000000000F60000-0x0000000000F7A000-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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ziraat bankasi swift mesaji.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Chtudj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tghkrpicfi\\Chtudj.exe\""	ziraat bankasi swift mesaji.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
42	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4788 set thread context of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 5052 set thread context of 1060	5052	ziraat bankasi swift mesaji.exe	93

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
5048	powershell.exe
5048	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4788	ziraat bankasi swift mesaji.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeDebugPrivilege	1060	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5052	ziraat bankasi swift mesaji.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 5048	4788	ziraat bankasi swift mesaji.exe	86
PID 4788 wrote to memory of 5048	4788	ziraat bankasi swift mesaji.exe	86
PID 4788 wrote to memory of 5048	4788	ziraat bankasi swift mesaji.exe	86
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 4788 wrote to memory of 5052	4788	ziraat bankasi swift mesaji.exe	92
PID 5052 wrote to memory of 1060	5052	ziraat bankasi swift mesaji.exe	93
PID 5052 wrote to memory of 1060	5052	ziraat bankasi swift mesaji.exe	93
PID 5052 wrote to memory of 1060	5052	ziraat bankasi swift mesaji.exe	93
PID 5052 wrote to memory of 1060	5052	ziraat bankasi swift mesaji.exe	93
PID 5052 wrote to memory of 1060	5052	ziraat bankasi swift mesaji.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\ziraat bankasi swift mesaji.exe
"C:\Users\Admin\AppData\Local\Temp\ziraat bankasi swift mesaji.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:4788
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5048
- C:\Users\Admin\AppData\Local\Temp\ziraat bankasi swift mesaji.exe
  "C:\Users\Admin\AppData\Local\Temp\ziraat bankasi swift mesaji.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5052
- - 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:1060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1060-153-0x0000000005D30000-0x0000000005DCC000-memory.dmp

Filesize
624KB

Download
memory/1060-152-0x0000000000F60000-0x0000000000F7A000-memory.dmp

Filesize
104KB

Download
memory/4788-132-0x0000000000A40000-0x0000000000A7A000-memory.dmp

Filesize
232KB

Download
memory/4788-133-0x0000000005980000-0x0000000005F24000-memory.dmp

Filesize
5.6MB

Download
memory/4788-134-0x0000000005470000-0x0000000005502000-memory.dmp

Filesize
584KB

Download
memory/4788-135-0x0000000005430000-0x000000000543A000-memory.dmp

Filesize
40KB

Download
memory/4788-136-0x000000000D630000-0x000000000D652000-memory.dmp

Filesize
136KB

Download
memory/5048-142-0x0000000006980000-0x000000000699E000-memory.dmp

Filesize
120KB

Download
memory/5048-141-0x0000000006350000-0x00000000063B6000-memory.dmp

Filesize
408KB

Download
memory/5048-140-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/5048-143-0x00000000081D0000-0x000000000884A000-memory.dmp

Filesize
6.5MB

Download
memory/5048-144-0x0000000006E70000-0x0000000006E8A000-memory.dmp

Filesize
104KB

Download
memory/5048-139-0x0000000005D20000-0x0000000006348000-memory.dmp

Filesize
6.2MB

Download
memory/5048-138-0x0000000003380000-0x00000000033B6000-memory.dmp

Filesize
216KB

Download
memory/5052-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5052-148-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5052-154-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads