blustealer | f4537ab3fdeb176d352dca40facb96f493d634f7d03140e2275be2ea33678e33

General

Target

a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe
Size

851KB
MD5

3d695f1b4db5a0635d43e1cd1b9d48ae
SHA1

377936812ab222b69380049be6ad28208e135603
SHA256

a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0
SHA512

268e47ebb3d159ee3c33a0b0b5d8c4a272430544c01ff2c66c7918fabcba66e784edebd435e1200f0c0ce44c317b771f3b076d4548f9fbcd905079d47a434185
SSDEEP

12288:Y+vTN8RVtfK8cyo7qyy8SpCrqLKL2MhkHEmY4FrHSzn7rwR8mGyqF7qbnZ4Xb:Y6TNUVU8cmJ4rM3akk14JH+n78Z4Xb

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1648 set thread context of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 560 set thread context of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 1648 wrote to memory of 560	1648	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	28
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29
PID 560 wrote to memory of 520	560	a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe	29

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\a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe
"C:\Users\Admin\AppData\Local\Temp\a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe
  "C:\Users\Admin\AppData\Local\Temp\a83688213da481b066908e16d7a2206180627bcef8c69e4fe756dc06c5c35ec0.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:560
- - 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:520

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/520-71-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/520-78-0x0000000001150000-0x000000000120C000-memory.dmp

Filesize
752KB

Download
memory/520-70-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/520-77-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/520-75-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/520-72-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/560-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-73-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/560-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/560-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1648-59-0x0000000005C30000-0x0000000005CA6000-memory.dmp

Filesize
472KB

Download
memory/1648-58-0x0000000005DC0000-0x0000000005E6C000-memory.dmp

Filesize
688KB

Download
memory/1648-57-0x0000000000570000-0x000000000057C000-memory.dmp

Filesize
48KB

Download
memory/1648-56-0x0000000000560000-0x0000000000574000-memory.dmp

Filesize
80KB

Download
memory/1648-55-0x00000000023A0000-0x00000000023E0000-memory.dmp

Filesize
256KB

Download
memory/1648-54-0x00000000000A0000-0x000000000017C000-memory.dmp

Filesize
880KB

Download

Analysis

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