blustealer | d02548b41a1f0e68f77df66f87b5664edb454744be93cc02500ccf083ae61ba3

General

Target

Invoice and packing list.exe
Size

911KB
MD5

ac6eeec739e6744155d762c71658ee08
SHA1

fd00d02ddebab59c5e1284acfc61489ee65506f6
SHA256

d02548b41a1f0e68f77df66f87b5664edb454744be93cc02500ccf083ae61ba3
SHA512

0720bf1fe12baa9a5689f5c5806017c82c6fd7acfeb53fe960168d1e3569ec86f7c25c87871b3270dfbf568547a27d425a51f6c1f52f0175b3fc12757cca7f63
SSDEEP

24576:I1wzlArxvk6SpZnUdY5hvLD5lRcMegGFVdp6c84OCuD1Xli:IOzCSzodYf5gMeg6docdlyb

Score

10^/10

blustealer collection spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5982631795:AAFe1A7BEPv_6ExMz851LxdOAjr_9gqH8zY/sendMessage?chat_id=5968311109

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-1-5-21-2891029575-1462575-1165213807-1000\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

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3900 set thread context of 3636	3900	Invoice and packing list.exe	87
PID 3636 set thread context of 3080	3636	Invoice and packing list.exe	88

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	43	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3900	Invoice and packing list.exe
3900	Invoice and packing list.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3900	Invoice and packing list.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3636	Invoice and packing list.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3900 wrote to memory of 3636	3900	Invoice and packing list.exe	87
PID 3636 wrote to memory of 3080	3636	Invoice and packing list.exe	88
PID 3636 wrote to memory of 3080	3636	Invoice and packing list.exe	88
PID 3636 wrote to memory of 3080	3636	Invoice and packing list.exe	88
PID 3636 wrote to memory of 3080	3636	Invoice and packing list.exe	88
PID 3636 wrote to memory of 3080	3636	Invoice and packing list.exe	88

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\Invoice and packing list.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice and packing list.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3900
- C:\Users\Admin\AppData\Local\Temp\Invoice and packing list.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice and packing list.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3636
- - 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:3080

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3080-146-0x0000000000C30000-0x0000000000C96000-memory.dmp

Filesize
408KB

Download
memory/3636-138-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3636-140-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3636-143-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3636-144-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3900-132-0x00000000009B0000-0x0000000000A9A000-memory.dmp

Filesize
936KB

Download
memory/3900-133-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/3900-134-0x0000000005440000-0x00000000054D2000-memory.dmp

Filesize
584KB

Download
memory/3900-135-0x00000000054E0000-0x00000000054EA000-memory.dmp

Filesize
40KB

Download
memory/3900-136-0x0000000006400000-0x000000000649C000-memory.dmp

Filesize
624KB

Download

Analysis

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