blustealer | 3752671d8ecafe3de17f8ec3a30ef23f137d8c3cd62683a13f6e9a56db5db4f4

Analysis

max time kernel
146s
max time network
150s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
18-07-2023 18:44

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General

Target

MT103-Payment-SwiftMesaj.exe
Size

1.0MB
MD5

962b447996d774bd6b11a221ab39bd8f
SHA1

aae4d7117ce9f6c493ed6f7c4d41cbc7c4f805f6
SHA256

3752671d8ecafe3de17f8ec3a30ef23f137d8c3cd62683a13f6e9a56db5db4f4
SHA512

23fbaf09f2e267883ed3e7db9c5f6f1512d2d2ca1ac097b23c3fb7183c7991e7c6b1397448ea996a1d24be6b16b3cc2a4b2d70fdb7c23249918d48923535df8e
SSDEEP

24576:8GFKCcW9RoTHfzW/ZOaXxLvppk/suw0kIrhDhq12N3nCAIQ9:8G8CcW9RoT/a/YahLR2/9Yeh220A

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot6120911772:AAEvnEDbWRlbIuD1NP8MtmiY3tQ46T9SQyo/sendMessage?chat_id=6082430866

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-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 2792 set thread context of 640	2792	MT103-Payment-SwiftMesaj.exe	36

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3024	MT103-Payment-SwiftMesaj.exe
3024	MT103-Payment-SwiftMesaj.exe
3060	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	MT103-Payment-SwiftMesaj.exe
Token: SeDebugPrivilege	3060	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	MT103-Payment-SwiftMesaj.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3060	3024	MT103-Payment-SwiftMesaj.exe	30
PID 3024 wrote to memory of 3060	3024	MT103-Payment-SwiftMesaj.exe	30
PID 3024 wrote to memory of 3060	3024	MT103-Payment-SwiftMesaj.exe	30
PID 3024 wrote to memory of 3060	3024	MT103-Payment-SwiftMesaj.exe	30
PID 3024 wrote to memory of 1720	3024	MT103-Payment-SwiftMesaj.exe	32
PID 3024 wrote to memory of 1720	3024	MT103-Payment-SwiftMesaj.exe	32
PID 3024 wrote to memory of 1720	3024	MT103-Payment-SwiftMesaj.exe	32
PID 3024 wrote to memory of 1720	3024	MT103-Payment-SwiftMesaj.exe	32
PID 3024 wrote to memory of 2740	3024	MT103-Payment-SwiftMesaj.exe	34
PID 3024 wrote to memory of 2740	3024	MT103-Payment-SwiftMesaj.exe	34
PID 3024 wrote to memory of 2740	3024	MT103-Payment-SwiftMesaj.exe	34
PID 3024 wrote to memory of 2740	3024	MT103-Payment-SwiftMesaj.exe	34
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 3024 wrote to memory of 2792	3024	MT103-Payment-SwiftMesaj.exe	35
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36
PID 2792 wrote to memory of 640	2792	MT103-Payment-SwiftMesaj.exe	36

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe
"C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RnylxoqUaifuRI.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3060
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RnylxoqUaifuRI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1BDA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1720
- C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe
  "C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe"
  2⤵
  PID:2740
- C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe
  "C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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:640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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

C:\Users\Admin\AppData\Local\Temp\tmp1BDA.tmp

Filesize
1KB

MD5
f4b26000046d1c1e7e2a3285bc21f7f0

SHA1
62e4d315e9ec1dc3ccdc650fc1b2b6e30480099c

SHA256
57050f08b8d0f7a01e51637b0c74058ed1bf780380a29e0f8f60b9da1da2bca6

SHA512
a8ca2d091bfb3471e5447ced525b34e8722a00b2bc41200465c64890fe80e88810d73ea860202f6202877c769dccb2481420dcac2dda1f379dca3d22a75967a7

Download Submit
memory/640-94-0x00000000000F0000-0x0000000000156000-memory.dmp

Filesize
408KB

Download
memory/640-93-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/640-101-0x00000000046B0000-0x000000000476C000-memory.dmp

Filesize
752KB

Download
memory/640-100-0x00000000047D0000-0x0000000004810000-memory.dmp

Filesize
256KB

Download
memory/640-99-0x0000000071600000-0x0000000071CEE000-memory.dmp

Filesize
6.9MB

Download
memory/640-98-0x00000000000F0000-0x0000000000156000-memory.dmp

Filesize
408KB

Download
memory/640-96-0x00000000000F0000-0x0000000000156000-memory.dmp

Filesize
408KB

Download
memory/640-91-0x00000000000F0000-0x0000000000156000-memory.dmp

Filesize
408KB

Download
memory/640-102-0x0000000071600000-0x0000000071CEE000-memory.dmp

Filesize
6.9MB

Download
memory/2792-87-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-73-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-77-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-79-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-71-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-104-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-67-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2792-81-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3024-82-0x0000000073CE0000-0x00000000743CE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-61-0x00000000055B0000-0x000000000565E000-memory.dmp

Filesize
696KB

Download
memory/3024-59-0x0000000004C00000-0x0000000004C40000-memory.dmp

Filesize
256KB

Download
memory/3024-56-0x0000000004C00000-0x0000000004C40000-memory.dmp

Filesize
256KB

Download
memory/3024-55-0x0000000000BD0000-0x0000000000CE2000-memory.dmp

Filesize
1.1MB

Download
memory/3024-57-0x0000000000590000-0x000000000059C000-memory.dmp

Filesize
48KB

Download
memory/3024-54-0x0000000073CE0000-0x00000000743CE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-58-0x0000000073CE0000-0x00000000743CE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-60-0x00000000005A0000-0x00000000005AA000-memory.dmp

Filesize
40KB

Download
memory/3060-85-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/3060-86-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/3060-90-0x00000000026E0000-0x0000000002720000-memory.dmp

Filesize
256KB

Download
memory/3060-88-0x00000000026E0000-0x0000000002720000-memory.dmp

Filesize
256KB

Download
memory/3060-103-0x000000006E380000-0x000000006E92B000-memory.dmp

Filesize
5.7MB

Download
memory/3060-89-0x00000000026E0000-0x0000000002720000-memory.dmp

Filesize
256KB

Download