blustealer | 579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498

General

Target

579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
Size

1.1MB
MD5

2d475dbdfd7a378689d984a04677e641
SHA1

1a673fb62bb6e29fb3d9ef0d40e480cbad541879
SHA256

579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498
SHA512

cf9e9014fc5b462ef5d2326c452d922b3c3b3f1317eed74b4620345fe8eeef15779abdf239d87a8c5dcb2e124c3d4214a0be8a06d43be3108e348091a7706fc5

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429

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-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1944 set thread context of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1288 set thread context of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28

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
1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1720	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	26
PID 1944 wrote to memory of 1720	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	26
PID 1944 wrote to memory of 1720	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	26
PID 1944 wrote to memory of 1720	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	26
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1944 wrote to memory of 1288	1944	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	27
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28
PID 1288 wrote to memory of 1756	1288	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
"C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
  "C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
  2⤵
  PID:1720
- C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
  "C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1288
- - 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:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1288-62-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-85-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-74-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-69-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-66-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-64-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1288-61-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1756-75-0x00000000001D0000-0x0000000000236000-memory.dmp

Filesize
408KB

Download
memory/1756-77-0x00000000001D0000-0x0000000000236000-memory.dmp

Filesize
408KB

Download
memory/1756-84-0x0000000000750000-0x000000000080C000-memory.dmp

Filesize
752KB

Download
memory/1756-82-0x00000000001D0000-0x0000000000236000-memory.dmp

Filesize
408KB

Download
memory/1756-80-0x00000000001D0000-0x0000000000236000-memory.dmp

Filesize
408KB

Download
memory/1944-57-0x0000000000520000-0x000000000052A000-memory.dmp

Filesize
40KB

Download
memory/1944-54-0x00000000011B0000-0x00000000012C8000-memory.dmp

Filesize
1.1MB

Download
memory/1944-56-0x0000000000340000-0x0000000000356000-memory.dmp

Filesize
88KB

Download
memory/1944-71-0x0000000004E65000-0x0000000004E76000-memory.dmp

Filesize
68KB

Download
memory/1944-60-0x0000000005DE0000-0x0000000005E5E000-memory.dmp

Filesize
504KB

Download
memory/1944-58-0x0000000005D10000-0x0000000005DD8000-memory.dmp

Filesize
800KB

Download
memory/1944-59-0x0000000004E65000-0x0000000004E76000-memory.dmp

Filesize
68KB

Download
memory/1944-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download

Analysis

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