blustealer | f1e039aa1914c2c96bc016b4dedc5f3465490c50e6b52042157387a5008115da

General

Target

ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
Size

3.3MB
MD5

bc9e97f5f18b18824f0d7d4b57603f8d
SHA1

a4f93b7a36b7584fe7ef3bc8e5f5e171a57933d5
SHA256

ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9
SHA512

5a8bbf32d1a7f3301133c0466b7af051fa6c9c92d33cab5636a3788aa703eb998f0992c89125f0978c2ced43992ad46bd9d6346557ccb8189c74b024ceeb2204
SSDEEP

49152:3YlX8PHUEni17exKgyLiTJVr3SEUnbMXS+q3C:3YlX8P

Score

10^/10

blustealer collection persistence spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5813496253:AAF4hamIx4-mNmFF1DwsqdJ4F9vUBmFqLo/sendMessage?chat_id=1105271645

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Aagaxjzofi = "\"C:\\Users\\Admin\\AppData\\Roaming\\Stetfasle\\Aagaxjzofi.exe\""	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4652 set thread context of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 2552 set thread context of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	56	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1900	powershell.exe
1900	powershell.exe
4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	powershell.exe
Token: SeDebugPrivilege	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 1900	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	86
PID 4652 wrote to memory of 1900	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	86
PID 4652 wrote to memory of 1900	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	86
PID 4652 wrote to memory of 1816	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	88
PID 4652 wrote to memory of 1816	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	88
PID 4652 wrote to memory of 1816	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	88
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 4652 wrote to memory of 2552	4652	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	89
PID 2552 wrote to memory of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91
PID 2552 wrote to memory of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91
PID 2552 wrote to memory of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91
PID 2552 wrote to memory of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91
PID 2552 wrote to memory of 4008	2552	ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
"C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1900
- C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
  C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
  2⤵
  PID:1816
- C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
  C:\Users\Admin\AppData\Local\Temp\ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2552
- - 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:4008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bnfdqwtm.501.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1900-151-0x00000000063C0000-0x00000000063DE000-memory.dmp

Filesize
120KB

Download
memory/1900-136-0x0000000004E10000-0x0000000004E46000-memory.dmp

Filesize
216KB

Download
memory/1900-153-0x00000000068A0000-0x00000000068BA000-memory.dmp

Filesize
104KB

Download
memory/1900-137-0x00000000055C0000-0x0000000005BE8000-memory.dmp

Filesize
6.2MB

Download
memory/1900-138-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/1900-139-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/1900-140-0x0000000005C60000-0x0000000005CC6000-memory.dmp

Filesize
408KB

Download
memory/1900-141-0x0000000005CD0000-0x0000000005D36000-memory.dmp

Filesize
408KB

Download
memory/1900-154-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/1900-152-0x0000000007C10000-0x000000000828A000-memory.dmp

Filesize
6.5MB

Download
memory/1900-158-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/1900-157-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/1900-156-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/2552-163-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2552-166-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2552-169-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4008-171-0x00000000056D0000-0x000000000576C000-memory.dmp

Filesize
624KB

Download
memory/4008-170-0x0000000000D40000-0x0000000000DA6000-memory.dmp

Filesize
408KB

Download
memory/4652-155-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/4652-134-0x00000000054B0000-0x00000000054D2000-memory.dmp

Filesize
136KB

Download
memory/4652-135-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/4652-133-0x00000000003D0000-0x000000000072C000-memory.dmp

Filesize
3.4MB

Download

Analysis

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