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Analysis
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max time kernel
42s -
max time network
30s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
10/03/2023, 14:53
Static task
static1
Behavioral task
behavioral1
Sample
SALARY RECEIPT.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
SALARY RECEIPT.exe
Resource
win10v2004-20230220-en
General
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Target
SALARY RECEIPT.exe
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Size
3.3MB
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MD5
bc9e97f5f18b18824f0d7d4b57603f8d
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SHA1
a4f93b7a36b7584fe7ef3bc8e5f5e171a57933d5
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SHA256
ed9b8b2727090a9a786fd014f3716eda74f0943e02c215c04c07613c3f271de9
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SHA512
5a8bbf32d1a7f3301133c0466b7af051fa6c9c92d33cab5636a3788aa703eb998f0992c89125f0978c2ced43992ad46bd9d6346557ccb8189c74b024ceeb2204
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SSDEEP
49152:3YlX8PHUEni17exKgyLiTJVr3SEUnbMXS+q3C:3YlX8P
Malware Config
Extracted
blustealer
https://api.telegram.org/bot5813496253:AAF4hamIx4-mNmFF1DwsqdJ4F9vUBmFqLo/sendMessage?chat_id=1105271645
Signatures
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BluStealer
A Modular information stealer written in Visual Basic.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\Aagaxjzofi = "\"C:\\Users\\Admin\\AppData\\Roaming\\Stetfasle\\Aagaxjzofi.exe\"" SALARY RECEIPT.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2036 set thread context of 572 2036 SALARY RECEIPT.exe 30 PID 572 set thread context of 1000 572 SALARY RECEIPT.exe 31 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1732 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1732 powershell.exe Token: SeDebugPrivilege 2036 SALARY RECEIPT.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 572 SALARY RECEIPT.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 2036 wrote to memory of 1732 2036 SALARY RECEIPT.exe 28 PID 2036 wrote to memory of 1732 2036 SALARY RECEIPT.exe 28 PID 2036 wrote to memory of 1732 2036 SALARY RECEIPT.exe 28 PID 2036 wrote to memory of 1732 2036 SALARY RECEIPT.exe 28 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 2036 wrote to memory of 572 2036 SALARY RECEIPT.exe 30 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 PID 572 wrote to memory of 1000 572 SALARY RECEIPT.exe 31 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SALARY RECEIPT.exe"C:\Users\Admin\AppData\Local\Temp\SALARY RECEIPT.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036 -
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:1732
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C:\Users\Admin\AppData\Local\Temp\SALARY RECEIPT.exe"C:\Users\Admin\AppData\Local\Temp\SALARY RECEIPT.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:572 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe3⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
PID:1000
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