blustealer | d2bb757f768f97d4b45a731d867f16ab1b1c90c403ad6005757dd06086945c3e

General

Target

Rfq#Specification.exe
Size

745KB
MD5

c0ae1bdaed6c274444b39455ce7b7edc
SHA1

99114477e80dd5cbf2b1fcfe4191d418f008bd6d
SHA256

d2bb757f768f97d4b45a731d867f16ab1b1c90c403ad6005757dd06086945c3e
SHA512

52011e7bdcb7cdb602dc65b6a5e9af28e5068124a20354c3e0e5e135d8dfcfb93a075e6c155380b0a0eccfa47d01db430dc3683e8ba86f1248717a6011c69349
SSDEEP

12288:sFfc+QSc61epzRDEF/inbQCOl9BP/npkszVLvtQQcwxrD8+IeXWScoBHNGmO:yfcd61GzFEtibQCOlvnpk6N9D8+IeXPc

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1292 set thread context of 584	1292	Rfq#Specification.exe	27
PID 584 set thread context of 360	584	Rfq#Specification.exe	28

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
584	Rfq#Specification.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 1292 wrote to memory of 584	1292	Rfq#Specification.exe	27
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28
PID 584 wrote to memory of 360	584	Rfq#Specification.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Rfq#Specification.exe
"C:\Users\Admin\AppData\Local\Temp\Rfq#Specification.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\Temp\Rfq#Specification.exe
  "C:\Users\Admin\AppData\Local\Temp\Rfq#Specification.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:584
- - 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
    - outlook_office_path
    - outlook_win_path
    PID:360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/360-72-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/360-81-0x0000000000880000-0x000000000093C000-memory.dmp

Filesize
752KB

Download
memory/360-79-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/360-77-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/360-74-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/584-64-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-59-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/584-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1292-54-0x0000000000BD0000-0x0000000000C90000-memory.dmp

Filesize
768KB

Download
memory/1292-58-0x0000000004C80000-0x0000000004CF4000-memory.dmp

Filesize
464KB

Download
memory/1292-57-0x00000000054E0000-0x000000000558A000-memory.dmp

Filesize
680KB

Download
memory/1292-56-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/1292-55-0x00000000759C1000-0x00000000759C3000-memory.dmp

Filesize
8KB

Download

Analysis

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