blustealer | 2165ab6a605c5ba4e532f63ceed296bafd826ba122cbc8f6422b01d737e1a126

General

Target

hesaphareketi-01.pdf.exe
Size

971KB
MD5

5abb322c719859466531ca3188ae9e87
SHA1

000e9615560b29b2562b337db53826564f8b52d1
SHA256

2165ab6a605c5ba4e532f63ceed296bafd826ba122cbc8f6422b01d737e1a126
SHA512

8da05db980f343be98943bb3e8a0ba21cb0ab650d67bdba1187bdbfeefed242c06d57149e8168839332852cfe5ee3dc5c9793245a99e09269c5db9fc4fb790e9
SSDEEP

24576:d1uSqdOeEq3ZJhp5o7by/HvhXMQhkieM9qUSV7:dvqdOXCDS7O/HvhXMQhZfS

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5374342837:AAHF-c1HAIvNCdF89VuEdNggsL2YBlpgkSE/sendMessage?chat_id=2133303215

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/768-75-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/768-76-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/768-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/768-80-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\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 964 set thread context of 564	964	hesaphareketi-01.pdf.exe	28
PID 564 set thread context of 768	564	hesaphareketi-01.pdf.exe	29

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 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
564	hesaphareketi-01.pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 964 wrote to memory of 564	964	hesaphareketi-01.pdf.exe	28
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29
PID 564 wrote to memory of 768	564	hesaphareketi-01.pdf.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:964
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:564
- - 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:768

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/564-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-82-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-68-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/564-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/768-75-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/768-73-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/768-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/768-80-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/964-56-0x00000000003B0000-0x00000000003C8000-memory.dmp

Filesize
96KB

Download
memory/964-59-0x0000000006020000-0x0000000006088000-memory.dmp

Filesize
416KB

Download
memory/964-58-0x0000000007F90000-0x000000000802E000-memory.dmp

Filesize
632KB

Download
memory/964-54-0x00000000002A0000-0x000000000039A000-memory.dmp

Filesize
1000KB

Download
memory/964-55-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/964-57-0x0000000000240000-0x000000000024C000-memory.dmp

Filesize
48KB

Download

Analysis

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