blustealer | 1a4d18bc01f4c5857b32c7ae2ffe7ec90ff5d4e4bf312f8048bb85706f5fbff5

General

Target

RFQ# 6000163267.exe
Size

910KB
MD5

f13711fcb52a6025e97a2bf85d9d4643
SHA1

e662ca8610953c0c7e90a161162d3e1b03e29442
SHA256

1a4d18bc01f4c5857b32c7ae2ffe7ec90ff5d4e4bf312f8048bb85706f5fbff5
SHA512

6e1885bdae20ea8c28d95c10701d9390f44d57fa01593a63ca72c9a2124b7069e30b1875cfb795956e2f78bbe6c88a636f4aa208c865991eb762f898443d70d7
SSDEEP

24576:gy/5dJbw9j6QSpvsRecLAzAd/AHjZnbCkI:P/5k9GQSpCecLCKMjZnbCkI

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\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 1736 set thread context of 1700	1736	RFQ# 6000163267.exe	27
PID 1700 set thread context of 1600	1700	RFQ# 6000163267.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
1700	RFQ# 6000163267.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1736 wrote to memory of 1700	1736	RFQ# 6000163267.exe	27
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28
PID 1700 wrote to memory of 1600	1700	RFQ# 6000163267.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ# 6000163267.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ# 6000163267.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\RFQ# 6000163267.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ# 6000163267.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1700
- - 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:1600

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/1600-73-0x0000000000210000-0x0000000000276000-memory.dmp

Filesize
408KB

Download
memory/1600-82-0x0000000004450000-0x000000000450C000-memory.dmp

Filesize
752KB

Download
memory/1600-80-0x0000000000210000-0x0000000000276000-memory.dmp

Filesize
408KB

Download
memory/1600-78-0x0000000000210000-0x0000000000276000-memory.dmp

Filesize
408KB

Download
memory/1600-75-0x0000000000210000-0x0000000000276000-memory.dmp

Filesize
408KB

Download
memory/1700-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-72-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1700-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-54-0x0000000000DC0000-0x0000000000EAA000-memory.dmp

Filesize
936KB

Download
memory/1736-58-0x0000000005780000-0x000000000582C000-memory.dmp

Filesize
688KB

Download
memory/1736-57-0x00000000003D0000-0x00000000003DC000-memory.dmp

Filesize
48KB

Download
memory/1736-56-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1736-55-0x0000000076161000-0x0000000076163000-memory.dmp

Filesize
8KB

Download
memory/1736-59-0x0000000004AE0000-0x0000000004B54000-memory.dmp

Filesize
464KB

Download

Analysis

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