blustealer | 85d3d548fea1f4e1a1580a310ec2e0bcafaed400134feb76a0f6d25afb4f8628

General

Target

SALARY RECEIPT.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

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
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-1-5-21-2647223082-2067913677-935928954-1000\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.

System Information Discovery
T1082

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

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
- 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.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - outlook_office_path
    - outlook_win_path
    PID:1000

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/572-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/572-81-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-72-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-69-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-67-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-62-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-63-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/572-64-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1000-73-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1000-74-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1000-75-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1000-77-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1000-79-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1000-80-0x0000000004BD0000-0x0000000004C8C000-memory.dmp

Filesize
752KB

Download
memory/1732-60-0x0000000002650000-0x0000000002690000-memory.dmp

Filesize
256KB

Download
memory/2036-57-0x0000000000A00000-0x0000000000A92000-memory.dmp

Filesize
584KB

Download
memory/2036-56-0x0000000004DB0000-0x0000000004DF0000-memory.dmp

Filesize
256KB

Download
memory/2036-54-0x0000000000FF0000-0x000000000134C000-memory.dmp

Filesize
3.4MB

Download
memory/2036-55-0x0000000004C00000-0x0000000004DA2000-memory.dmp

Filesize
1.6MB

Download

Analysis

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