blustealer | d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05

General

Target

DETAILS AND INVOICES.exe
Size

2.4MB
MD5

888a18230e69a8ba0c420042bcb6e758
SHA1

0b0dcb23577efc327acdd2ff052bb3d54693d715
SHA256

d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05
SHA512

d20488366904fda6dccb6a92c4ad0bfc74d2c74702e2f4cadef197cdf1e3f37cd39f3b35a8df9bfc8d3f9a71bfb4fefa6adf0b5f4b8f4cf8eb017367847fd3cc
SSDEEP

24576:sE9iqdFA3SA2PWRLxlTP0q0prBMsOZORHJd5SbyBRJ4y4c2TsdZh8FzxZ+hLAwKu:79vgIWRbb0RtYQBXhcOatvd4oS

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\15.0\Outlook\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-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\Oxpurhx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ekoclg\\Oxpurhx.exe\""	DETAILS AND INVOICES.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1320 set thread context of 320	1320	DETAILS AND INVOICES.exe	30
PID 320 set thread context of 1552	320	DETAILS AND INVOICES.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
860	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	powershell.exe
Token: SeDebugPrivilege	1320	DETAILS AND INVOICES.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
320	DETAILS AND INVOICES.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 860	1320	DETAILS AND INVOICES.exe	28
PID 1320 wrote to memory of 860	1320	DETAILS AND INVOICES.exe	28
PID 1320 wrote to memory of 860	1320	DETAILS AND INVOICES.exe	28
PID 1320 wrote to memory of 860	1320	DETAILS AND INVOICES.exe	28
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 1320 wrote to memory of 320	1320	DETAILS AND INVOICES.exe	30
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31
PID 320 wrote to memory of 1552	320	DETAILS AND INVOICES.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\DETAILS AND INVOICES.exe
"C:\Users\Admin\AppData\Local\Temp\DETAILS AND INVOICES.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320
- 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:860
- C:\Users\Admin\AppData\Local\Temp\DETAILS AND INVOICES.exe
  "C:\Users\Admin\AppData\Local\Temp\DETAILS AND INVOICES.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:320
- - 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:1552

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/320-65-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-84-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-74-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-71-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-69-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/320-66-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/320-64-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/860-61-0x0000000002660000-0x00000000026A0000-memory.dmp

Filesize
256KB

Download
memory/860-60-0x0000000002660000-0x00000000026A0000-memory.dmp

Filesize
256KB

Download
memory/1320-62-0x0000000000460000-0x00000000004A0000-memory.dmp

Filesize
256KB

Download
memory/1320-54-0x00000000008C0000-0x0000000000B26000-memory.dmp

Filesize
2.4MB

Download
memory/1320-57-0x0000000000460000-0x00000000004A0000-memory.dmp

Filesize
256KB

Download
memory/1320-56-0x00000000044F0000-0x0000000004582000-memory.dmp

Filesize
584KB

Download
memory/1320-55-0x0000000004BB0000-0x0000000004D4C000-memory.dmp

Filesize
1.6MB

Download
memory/1552-77-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1552-76-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1552-79-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1552-81-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1552-82-0x00000000047F0000-0x00000000048AC000-memory.dmp

Filesize
752KB

Download
memory/1552-83-0x0000000004960000-0x00000000049A0000-memory.dmp

Filesize
256KB

Download
memory/1552-75-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download

Analysis

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