blustealer | 6c912191a6853ca9717c37053a4ab7014d6980e48d846a8c777e7ee056cf4a56

General

Target

573b0103956eb1c9f12e2a2adcc77846.exe
Size

852KB
MD5

573b0103956eb1c9f12e2a2adcc77846
SHA1

50e9fd321b9b1f39b6430b01941562ba924e40c0
SHA256

6c912191a6853ca9717c37053a4ab7014d6980e48d846a8c777e7ee056cf4a56
SHA512

ab26ac29ae7135cd6dcc5e95e6f9af290fadad9ab9afc87af60f38615a210a1a1d908d34e8796fe18108847b02cb51c1f6eb8f886237d1b0c8838edb5f4f9ef4
SSDEEP

24576:OVwhMBsRpeiKuSbWY7XM970ZNmapxyJoyLJnM:OVw+XUSqH970Zwa1S

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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 1088 set thread context of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 940 set thread context of 2032	940	573b0103956eb1c9f12e2a2adcc77846.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
940	573b0103956eb1c9f12e2a2adcc77846.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 1088 wrote to memory of 940	1088	573b0103956eb1c9f12e2a2adcc77846.exe	27
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28
PID 940 wrote to memory of 2032	940	573b0103956eb1c9f12e2a2adcc77846.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\573b0103956eb1c9f12e2a2adcc77846.exe
"C:\Users\Admin\AppData\Local\Temp\573b0103956eb1c9f12e2a2adcc77846.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\AppData\Local\Temp\573b0103956eb1c9f12e2a2adcc77846.exe
  "C:\Users\Admin\AppData\Local\Temp\573b0103956eb1c9f12e2a2adcc77846.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:940
- - 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:2032

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/940-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/940-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1088-59-0x0000000007E70000-0x0000000007EF4000-memory.dmp

Filesize
528KB

Download
memory/1088-54-0x00000000008B0000-0x000000000098C000-memory.dmp

Filesize
880KB

Download
memory/1088-58-0x0000000007DB0000-0x0000000007E6A000-memory.dmp

Filesize
744KB

Download
memory/1088-57-0x00000000003E0000-0x00000000003EC000-memory.dmp

Filesize
48KB

Download
memory/1088-56-0x00000000007F0000-0x0000000000808000-memory.dmp

Filesize
96KB

Download
memory/1088-55-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/2032-72-0x0000000000110000-0x0000000000176000-memory.dmp

Filesize
408KB

Download
memory/2032-74-0x0000000000110000-0x0000000000176000-memory.dmp

Filesize
408KB

Download
memory/2032-77-0x0000000000110000-0x0000000000176000-memory.dmp

Filesize
408KB

Download
memory/2032-79-0x0000000000110000-0x0000000000176000-memory.dmp

Filesize
408KB

Download
memory/2032-81-0x00000000047F0000-0x00000000048AC000-memory.dmp

Filesize
752KB

Download

Analysis

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