blustealer | a3b4760fbda9e11f889e4faf484d6e76d57a83cb69c0c3ad9e54d8bfc575275f

General

Target

fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
Size

964KB
MD5

d5a045e300184028b6a6dfc75a303307
SHA1

5fc5a4a17bc5ad2e7ee4da563d5a348c618c0cf9
SHA256

fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23
SHA512

0fb4fe0cc538995303669b8a3bb1576c0c462caee47ff2c8c2545ea760c21a4f9a36be8600295f9ea98034afc313cc63de2940b21013a04ad2d29070b539dae1
SSDEEP

24576:5MaB1dLvo9yPmx0k6F9FkjefS/cIXVaUys/FvV:5pB1Zw9yPk6fFkjCihllFv

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

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-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 1520 set thread context of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	29	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 760	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	93
PID 2784 wrote to memory of 760	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	93
PID 2784 wrote to memory of 760	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	93
PID 2784 wrote to memory of 4808	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	94
PID 2784 wrote to memory of 4808	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	94
PID 2784 wrote to memory of 4808	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	94
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 2784 wrote to memory of 1520	2784	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	95
PID 1520 wrote to memory of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96
PID 1520 wrote to memory of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96
PID 1520 wrote to memory of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96
PID 1520 wrote to memory of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96
PID 1520 wrote to memory of 3036	1520	fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
"C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
  "C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe"
  2⤵
  PID:760
- C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
  "C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe"
  2⤵
  PID:4808
- C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe
  "C:\Users\Admin\AppData\Local\Temp\fd482fa2269db98e32ec1a0ecb21f132083e07dfdccf4baa9ec8d305c63eae23.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1520
- - 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:3036

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/1520-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1520-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1520-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2784-133-0x00000000003E0000-0x00000000004D8000-memory.dmp

Filesize
992KB

Download
memory/2784-134-0x0000000005420000-0x00000000059C4000-memory.dmp

Filesize
5.6MB

Download
memory/2784-135-0x0000000004D50000-0x0000000004DE2000-memory.dmp

Filesize
584KB

Download
memory/2784-136-0x0000000004DF0000-0x0000000004DFA000-memory.dmp

Filesize
40KB

Download
memory/2784-137-0x0000000004F10000-0x0000000004F20000-memory.dmp

Filesize
64KB

Download
memory/2784-138-0x0000000004F10000-0x0000000004F20000-memory.dmp

Filesize
64KB

Download
memory/2784-139-0x0000000006C80000-0x0000000006D1C000-memory.dmp

Filesize
624KB

Download
memory/3036-147-0x0000000000630000-0x0000000000696000-memory.dmp

Filesize
408KB

Download
memory/3036-148-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download

Analysis

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