blustealer | 87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06

General

Target

87.exe
Size

1.2MB
MD5

c417498058dcc5982157432ff63d33e9
SHA1

a9909f37d3cef589e2086a5bb3dfc728596130f6
SHA256

87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06
SHA512

5e06e931c3e142aa0ec69452183a328595acb82009011e6bd702ccd2ed65bcfe075562a845e9f1aefadb74c2b731b3f84b684a116f1cf8bd20fd3b277d807844
SSDEEP

24576:pN6GEf47+UgcarQNkRq/mczfSrio0cXNf:D6hf47+OarDRgLfSF0iN

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot6120911772:AAEvnEDbWRlbIuD1NP8MtmiY3tQ46T9SQyo/sendMessage?chat_id=6082430866

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-1-5-21-1024678951-1535676557-2778719785-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 2712	2604	87.exe	34
PID 2712 set thread context of 2400	2712	87.exe	35

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2252	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2924	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2712	87.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2924	2604	87.exe	30
PID 2604 wrote to memory of 2924	2604	87.exe	30
PID 2604 wrote to memory of 2924	2604	87.exe	30
PID 2604 wrote to memory of 2924	2604	87.exe	30
PID 2604 wrote to memory of 2252	2604	87.exe	32
PID 2604 wrote to memory of 2252	2604	87.exe	32
PID 2604 wrote to memory of 2252	2604	87.exe	32
PID 2604 wrote to memory of 2252	2604	87.exe	32
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2604 wrote to memory of 2712	2604	87.exe	34
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35
PID 2712 wrote to memory of 2400	2712	87.exe	35

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\87.exe
"C:\Users\Admin\AppData\Local\Temp\87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\XwWrHjBogFa.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XwWrHjBogFa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1D12.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2252
- C:\Users\Admin\AppData\Local\Temp\87.exe
  "C:\Users\Admin\AppData\Local\Temp\87.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2712
- - 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:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1D12.tmp

Filesize
1KB

MD5
8f8dad74a974ee9e2ae267634f136d1f

SHA1
b3d4652c82cca897c39cd93a6106da920e98c39d

SHA256
5c5e5ba19fb5256d598299e8b5a6d2171acc73b0a02d6d34ad8d2975df4277d2

SHA512
01f8f783f7f4030837b5ed7e6cd78b743f3a79f5daf9f7e2d91996fd52a3c4f56223e80c1e2d24b32ce98adf5c55d5dec0a427a639b0e3e46176c400d9ad7ec8

Download Submit
memory/2400-87-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/2400-91-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/2400-97-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-89-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/2400-88-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2400-93-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/2400-95-0x00000000011B0000-0x000000000126C000-memory.dmp

Filesize
752KB

Download
memory/2400-94-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-96-0x0000000004DC0000-0x0000000004E00000-memory.dmp

Filesize
256KB

Download
memory/2604-54-0x0000000001050000-0x000000000118E000-memory.dmp

Filesize
1.2MB

Download
memory/2604-61-0x00000000055A0000-0x000000000564E000-memory.dmp

Filesize
696KB

Download
memory/2604-60-0x00000000006C0000-0x00000000006CA000-memory.dmp

Filesize
40KB

Download
memory/2604-77-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2604-59-0x0000000004E80000-0x0000000004EC0000-memory.dmp

Filesize
256KB

Download
memory/2604-57-0x0000000000430000-0x000000000043E000-memory.dmp

Filesize
56KB

Download
memory/2604-55-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2604-56-0x0000000004E80000-0x0000000004EC0000-memory.dmp

Filesize
256KB

Download
memory/2604-58-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-69-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-83-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-98-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-75-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-73-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-71-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-70-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2712-78-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2924-85-0x0000000002490000-0x00000000024D0000-memory.dmp

Filesize
256KB

Download
memory/2924-86-0x000000006E720000-0x000000006ECCB000-memory.dmp

Filesize
5.7MB

Download
memory/2924-84-0x0000000002490000-0x00000000024D0000-memory.dmp

Filesize
256KB

Download
memory/2924-82-0x0000000002490000-0x00000000024D0000-memory.dmp

Filesize
256KB

Download
memory/2924-81-0x000000006E720000-0x000000006ECCB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads