blustealer | 2408a41dc207fa367704b1f16372fedfa2c4163f65daf436d6f8ae2490b9aff6

Resubmissions

17-04-2023 16:19

230417-tsqjrsfb33 10

17-04-2023 16:08

230417-tk6wsagg5s 10

17-04-2023 15:53

230417-tbt6magg2s 10

17-04-2023 15:30

230417-sxwqxage9v 10

Analysis

max time kernel
65s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
17-04-2023 15:53

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General

Target

RFQ for supply of Stock Replenishment FI-2023-089.exe
Size

833KB
MD5

c3d43cf53c510fed679a621e5c9d0aea
SHA1

a8d367631072c110d99369209782f8ddd6de673f
SHA256

2a4fe1060c15849fad34754e02f548fc250f8749ab923f929c7497c0614c760b
SHA512

19d006881997d35cc57fff45b1e216d601d83b15045dcc75f8b6b617bb797c838a7cf0c3e0eec1e016817d5f3f429650a88a914bfaa9b9deeb62af18255437a8
SSDEEP

12288:El4SNuCXLzEfF0S2FXtBvFD3oNQLp1K6YZQ0MASVbNqRPXnBGTJ:EG9CvEfFv23o2LDK6WQOSVpwXnB2

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

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-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\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 1996 set thread context of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1152 set thread context of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29

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
1152	RFQ for supply of Stock Replenishment FI-2023-089.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1996 wrote to memory of 1152	1996	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29
PID 1152 wrote to memory of 1908	1152	RFQ for supply of Stock Replenishment FI-2023-089.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1152
- - 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:1908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1152-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-73-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-66-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1152-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1152-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1908-72-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1908-71-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1908-74-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1908-76-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1908-78-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1908-79-0x0000000000BF0000-0x0000000000CAC000-memory.dmp

Filesize
752KB

Download
memory/1996-60-0x00000000058D0000-0x0000000005946000-memory.dmp

Filesize
472KB

Download
memory/1996-59-0x0000000005310000-0x00000000053BC000-memory.dmp

Filesize
688KB

Download
memory/1996-58-0x00000000004E0000-0x00000000004EC000-memory.dmp

Filesize
48KB

Download
memory/1996-57-0x0000000004E70000-0x0000000004EB0000-memory.dmp

Filesize
256KB

Download
memory/1996-56-0x00000000004C0000-0x00000000004D4000-memory.dmp

Filesize
80KB

Download
memory/1996-54-0x0000000000CE0000-0x0000000000DB6000-memory.dmp

Filesize
856KB

Download
memory/1996-55-0x0000000004E70000-0x0000000004EB0000-memory.dmp

Filesize
256KB

Download