blustealer | 5a5ac8f9a24fe3d9eb8c6e2bd6d947af89612157cf70302449c3fe787bc7ae76

General

Target

5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
Size

890KB
MD5

e0236718f5d4d70c2dc485d322834897
SHA1

f0276ffdd801d3440918269f5d880f0502bda55e
SHA256

5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081
SHA512

a7fae05a2aeb61acac13e682dcbff7bd000ecbb0ebc1350a62e528bc6abffe94db1e0cc0b71fa0b6cb90479e666b71dfa7406b8aeddff0bd9490d556a2fdc553
SSDEEP

24576:b4QWOM4PEXi53mZbPovZuFeBwEtumDDd+c6UcqK:b4QWV4Eq3mavEeBwEtfZ+cfcn

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 1772 set thread context of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 524 set thread context of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 1104	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	28
PID 1772 wrote to memory of 1104	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	28
PID 1772 wrote to memory of 1104	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	28
PID 1772 wrote to memory of 1104	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	28
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 1772 wrote to memory of 524	1772	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	29
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30
PID 524 wrote to memory of 968	524	5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe	30

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\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
"C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
  "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
  2⤵
  PID:1104
- C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
  "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:524
- - 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:968

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

Loading Replay Monitor...

Downloads

memory/524-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-81-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-69-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/524-64-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/524-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/968-74-0x0000000000230000-0x0000000000296000-memory.dmp

Filesize
408KB

Download
memory/968-72-0x0000000000230000-0x0000000000296000-memory.dmp

Filesize
408KB

Download
memory/968-80-0x0000000000B20000-0x0000000000BDC000-memory.dmp

Filesize
752KB

Download
memory/968-78-0x0000000000230000-0x0000000000296000-memory.dmp

Filesize
408KB

Download
memory/968-76-0x0000000000230000-0x0000000000296000-memory.dmp

Filesize
408KB

Download
memory/968-73-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1772-58-0x0000000000500000-0x000000000050C000-memory.dmp

Filesize
48KB

Download
memory/1772-54-0x0000000000040000-0x0000000000126000-memory.dmp

Filesize
920KB

Download
memory/1772-57-0x0000000004D40000-0x0000000004D80000-memory.dmp

Filesize
256KB

Download
memory/1772-61-0x0000000005CC0000-0x0000000005D36000-memory.dmp

Filesize
472KB

Download
memory/1772-59-0x0000000005E60000-0x0000000005F0C000-memory.dmp

Filesize
688KB

Download
memory/1772-56-0x00000000004F0000-0x0000000000502000-memory.dmp

Filesize
72KB

Download
memory/1772-60-0x0000000004D40000-0x0000000004D80000-memory.dmp

Filesize
256KB

Download
memory/1772-55-0x0000000004D40000-0x0000000004D80000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing