blustealer | 3752671d8ecafe3de17f8ec3a30ef23f137d8c3cd62683a13f6e9a56db5db4f4

Analysis

max time kernel
148s
max time network
152s
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-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\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 2924 set thread context of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2752 set thread context of 2824	2752	MT103-Payment-SwiftMesaj.exe	37

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
2308	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2924	MT103-Payment-SwiftMesaj.exe
2924	MT103-Payment-SwiftMesaj.exe
2924	MT103-Payment-SwiftMesaj.exe
2924	MT103-Payment-SwiftMesaj.exe
2484	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	MT103-Payment-SwiftMesaj.exe
Token: SeDebugPrivilege	2484	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2752	MT103-Payment-SwiftMesaj.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2484	2924	MT103-Payment-SwiftMesaj.exe	30
PID 2924 wrote to memory of 2484	2924	MT103-Payment-SwiftMesaj.exe	30
PID 2924 wrote to memory of 2484	2924	MT103-Payment-SwiftMesaj.exe	30
PID 2924 wrote to memory of 2484	2924	MT103-Payment-SwiftMesaj.exe	30
PID 2924 wrote to memory of 2308	2924	MT103-Payment-SwiftMesaj.exe	32
PID 2924 wrote to memory of 2308	2924	MT103-Payment-SwiftMesaj.exe	32
PID 2924 wrote to memory of 2308	2924	MT103-Payment-SwiftMesaj.exe	32
PID 2924 wrote to memory of 2308	2924	MT103-Payment-SwiftMesaj.exe	32
PID 2924 wrote to memory of 592	2924	MT103-Payment-SwiftMesaj.exe	34
PID 2924 wrote to memory of 592	2924	MT103-Payment-SwiftMesaj.exe	34
PID 2924 wrote to memory of 592	2924	MT103-Payment-SwiftMesaj.exe	34
PID 2924 wrote to memory of 592	2924	MT103-Payment-SwiftMesaj.exe	34
PID 2924 wrote to memory of 2300	2924	MT103-Payment-SwiftMesaj.exe	35
PID 2924 wrote to memory of 2300	2924	MT103-Payment-SwiftMesaj.exe	35
PID 2924 wrote to memory of 2300	2924	MT103-Payment-SwiftMesaj.exe	35
PID 2924 wrote to memory of 2300	2924	MT103-Payment-SwiftMesaj.exe	35
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2924 wrote to memory of 2752	2924	MT103-Payment-SwiftMesaj.exe	36
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37
PID 2752 wrote to memory of 2824	2752	MT103-Payment-SwiftMesaj.exe	37

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\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:2924
- 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:2484
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RnylxoqUaifuRI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp602A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2308
- C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe
  "C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe"
  2⤵
  PID:592
- C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe
  "C:\Users\Admin\AppData\Local\Temp\MT103-Payment-SwiftMesaj.exe"
  2⤵
  PID:2300
- 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:2752
- - 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:2824

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp602A.tmp

Filesize
1KB

MD5
b3794095c0476a3128327faf9a7392c4

SHA1
884e59af41de73df0079b0c3564bd631f65302b3

SHA256
a1b12a5fd4ce1fe24a6fb22916c8efc3e7464c6ec0e37fcf9dc0c7f0644c0312

SHA512
3edb8c50ae3a2c96196f81f7440037aeabae91972ea12d0727a3b61580c9568a95e24b3e5760e519ea1908578999eedaaaf064bc3aff4dd34330dfa77da35a2d

Download Submit
memory/2484-82-0x000000006F0B0000-0x000000006F65B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-83-0x000000006F0B0000-0x000000006F65B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-98-0x000000006F0B0000-0x000000006F65B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-86-0x0000000002770000-0x00000000027B0000-memory.dmp

Filesize
256KB

Download
memory/2484-85-0x0000000002770000-0x00000000027B0000-memory.dmp

Filesize
256KB

Download
memory/2752-99-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-78-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-84-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-68-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-70-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-72-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2752-74-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-76-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2824-93-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/2824-95-0x0000000004860000-0x00000000048A0000-memory.dmp

Filesize
256KB

Download
memory/2824-97-0x0000000072540000-0x0000000072C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-96-0x0000000000A60000-0x0000000000B1C000-memory.dmp

Filesize
752KB

Download
memory/2824-94-0x0000000072540000-0x0000000072C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-91-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/2824-87-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/2824-89-0x0000000000130000-0x0000000000196000-memory.dmp

Filesize
408KB

Download
memory/2824-88-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-57-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-58-0x0000000004CD0000-0x0000000004D10000-memory.dmp

Filesize
256KB

Download
memory/2924-60-0x0000000005640000-0x00000000056EE000-memory.dmp

Filesize
696KB

Download
memory/2924-54-0x0000000000200000-0x0000000000312000-memory.dmp

Filesize
1.1MB

Download
memory/2924-56-0x00000000005C0000-0x00000000005CC000-memory.dmp

Filesize
48KB

Download
memory/2924-55-0x0000000004CD0000-0x0000000004D10000-memory.dmp

Filesize
256KB

Download
memory/2924-59-0x0000000000610000-0x000000000061A000-memory.dmp

Filesize
40KB

Download
memory/2924-79-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-53-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download