blustealer | 2c38354b88fee401ab4d9ca00979e23b39237bd81f19f7c668161da5cdda6be5

General

Target

hesaphareketi-01.pdf.exe
Size

799KB
MD5

a41ab4f6f64ad77eb442a7d750f3b70d
SHA1

b69e73227263e953c014d3e2e6a9c2e2d7177971
SHA256

2c38354b88fee401ab4d9ca00979e23b39237bd81f19f7c668161da5cdda6be5
SHA512

fd42aa6a418cf1aa3af841d97bf70efdea56925d150d1bdbe05a694ce02ae92bba0e8567f438322112c07aaec44dcaa8c64ee53683faa8b2aa690fc024011227
SSDEEP

12288:civT6np2WYBTUmUtujgeKFkhDfHZciM+qqHQF9x3:2nDqIh0jgeKGBhcD1H

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 1 IoCs

resource	yara_rule
behavioral2/memory/2792-145-0x0000000000990000-0x00000000009AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
55	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5020 set thread context of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 4224 set thread context of 2792	4224	hesaphareketi-01.pdf.exe	100

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	2792	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4224	hesaphareketi-01.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 5020 wrote to memory of 4224	5020	hesaphareketi-01.pdf.exe	98
PID 4224 wrote to memory of 2792	4224	hesaphareketi-01.pdf.exe	100
PID 4224 wrote to memory of 2792	4224	hesaphareketi-01.pdf.exe	100
PID 4224 wrote to memory of 2792	4224	hesaphareketi-01.pdf.exe	100
PID 4224 wrote to memory of 2792	4224	hesaphareketi-01.pdf.exe	100
PID 4224 wrote to memory of 2792	4224	hesaphareketi-01.pdf.exe	100

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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:5020
- 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:4224
- - 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:2792

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/2792-145-0x0000000000990000-0x00000000009AA000-memory.dmp

Filesize
104KB

Download
memory/4224-139-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4224-141-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4224-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5020-132-0x0000000000600000-0x00000000006CE000-memory.dmp

Filesize
824KB

Download
memory/5020-133-0x0000000005550000-0x0000000005AF4000-memory.dmp

Filesize
5.6MB

Download
memory/5020-134-0x0000000005060000-0x00000000050F2000-memory.dmp

Filesize
584KB

Download
memory/5020-135-0x0000000005210000-0x000000000521A000-memory.dmp

Filesize
40KB

Download
memory/5020-136-0x00000000089B0000-0x0000000008A4C000-memory.dmp

Filesize
624KB

Download
memory/5020-137-0x0000000000CF0000-0x0000000000D56000-memory.dmp

Filesize
408KB

Download

Analysis

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