blustealer | 13ec1600c34aef86c927c06c2930cc91c57af490d206783263c82a5d3877bd44

Analysis

max time kernel
294s
max time network
296s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
08-06-2023 11:04

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General

Target

13.exe
Size

1.3MB
MD5

47e740a60ad3725bf3e8aa0f1ca06602
SHA1

14cdc8c2df7e674eff67104603841113d83b4927
SHA256

13ec1600c34aef86c927c06c2930cc91c57af490d206783263c82a5d3877bd44
SHA512

3cef948a617aef62b2483b34649f631c1f0f9a59308fd2c3a32d049843fa9eb634f46d955a7e1c1ca20c03bad6df8cf59327cb8b23ed095870e217a9940b6214
SSDEEP

12288:/06hthweHJDyHYKeu7oFcN6wLEOcU8od5bkwIf4PghrV1U9REyaXO1fIM0WQCjTr:38oOLEOJ805UP37yao0DCb

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol: smtp
Host:
mail.dphe.gov.bd
Port:
587
Username:
[email protected]
Password:
@DphE20#

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	13.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\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 1084 set thread context of 3528	1084	13.exe	91
PID 3528 set thread context of 2328	3528	MSBuild.exe	94

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe

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

T1053

pid	Process
3280	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
348	taskmgr.exe
348	taskmgr.exe
1084	13.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
1776	powershell.exe
1084	13.exe
1776	powershell.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	348	taskmgr.exe
Token: SeSystemProfilePrivilege	348	taskmgr.exe
Token: SeCreateGlobalPrivilege	348	taskmgr.exe
Token: SeDebugPrivilege	1084	13.exe
Token: SeDebugPrivilege	1776	powershell.exe
Token: 33	348	taskmgr.exe
Token: SeIncBasePriorityPrivilege	348	taskmgr.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe

Suspicious use of SendNotifyMessage 34 IoCs

pid	Process
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe
348	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3528	MSBuild.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 1776	1084	13.exe	87
PID 1084 wrote to memory of 1776	1084	13.exe	87
PID 1084 wrote to memory of 1776	1084	13.exe	87
PID 1084 wrote to memory of 3280	1084	13.exe	89
PID 1084 wrote to memory of 3280	1084	13.exe	89
PID 1084 wrote to memory of 3280	1084	13.exe	89
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 1084 wrote to memory of 3528	1084	13.exe	91
PID 3528 wrote to memory of 2328	3528	MSBuild.exe	94
PID 3528 wrote to memory of 2328	3528	MSBuild.exe	94
PID 3528 wrote to memory of 2328	3528	MSBuild.exe	94
PID 3528 wrote to memory of 2328	3528	MSBuild.exe	94
PID 3528 wrote to memory of 2328	3528	MSBuild.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\13.exe
"C:\Users\Admin\AppData\Local\Temp\13.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YLaBcpsPbHzc.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1776
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YLaBcpsPbHzc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2D3A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3280
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3528
- - 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:2328

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:348

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2pfeltcu.gj3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2D3A.tmp

Filesize
1KB

MD5
262844c6e76d79e3c56c753415e5b2e5

SHA1
bfc7f4bd01a26a02b5e1aa29d1ae3ce954421ea1

SHA256
9dc3f3c377a89bdf24283ecad1d09eac3608ab2fffe9bbb72d916c7705f6427a

SHA512
a88e33e17b3854deb7f1dbe1a1cb8246ab174f47d9cf6a4eea0c1a12a4247321b236f2faf29e4677697231388d9130d9ac2a88697d57554c67eb43adfb6325e6

Download Submit
memory/348-151-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-150-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-155-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-154-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-153-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-143-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-144-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-145-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-149-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/348-152-0x00000197AB400000-0x00000197AB401000-memory.dmp

Filesize
4KB

Download
memory/1084-135-0x0000000005690000-0x0000000005722000-memory.dmp

Filesize
584KB

Download
memory/1084-136-0x00000000055F0000-0x00000000055FA000-memory.dmp

Filesize
40KB

Download
memory/1084-139-0x000000000BD00000-0x000000000BD9C000-memory.dmp

Filesize
624KB

Download
memory/1084-138-0x00000000058A0000-0x00000000058B0000-memory.dmp

Filesize
64KB

Download
memory/1084-137-0x00000000058A0000-0x00000000058B0000-memory.dmp

Filesize
64KB

Download
memory/1084-134-0x0000000005BA0000-0x0000000006144000-memory.dmp

Filesize
5.6MB

Download
memory/1084-133-0x0000000000C20000-0x0000000000D66000-memory.dmp

Filesize
1.3MB

Download
memory/1776-160-0x0000000005460000-0x0000000005482000-memory.dmp

Filesize
136KB

Download
memory/1776-182-0x00000000072E0000-0x0000000007312000-memory.dmp

Filesize
200KB

Download
memory/1776-161-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/1776-157-0x0000000004DB0000-0x0000000004DE6000-memory.dmp

Filesize
216KB

Download
memory/1776-202-0x0000000007950000-0x0000000007958000-memory.dmp

Filesize
32KB

Download
memory/1776-167-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/1776-168-0x0000000004EB0000-0x0000000004EC0000-memory.dmp

Filesize
64KB

Download
memory/1776-174-0x0000000004EB0000-0x0000000004EC0000-memory.dmp

Filesize
64KB

Download
memory/1776-201-0x0000000007970000-0x000000000798A000-memory.dmp

Filesize
104KB

Download
memory/1776-180-0x0000000006330000-0x000000000634E000-memory.dmp

Filesize
120KB

Download
memory/1776-200-0x0000000007860000-0x000000000786E000-memory.dmp

Filesize
56KB

Download
memory/1776-158-0x00000000054F0000-0x0000000005B18000-memory.dmp

Filesize
6.2MB

Download
memory/1776-183-0x0000000073AB0000-0x0000000073AFC000-memory.dmp

Filesize
304KB

Download
memory/1776-193-0x00000000068E0000-0x00000000068FE000-memory.dmp

Filesize
120KB

Download
memory/1776-194-0x0000000004EB0000-0x0000000004EC0000-memory.dmp

Filesize
64KB

Download
memory/1776-195-0x000000007EE70000-0x000000007EE80000-memory.dmp

Filesize
64KB

Download
memory/1776-196-0x0000000007C70000-0x00000000082EA000-memory.dmp

Filesize
6.5MB

Download
memory/1776-197-0x0000000007630000-0x000000000764A000-memory.dmp

Filesize
104KB

Download
memory/1776-198-0x00000000076A0000-0x00000000076AA000-memory.dmp

Filesize
40KB

Download
memory/1776-199-0x00000000078B0000-0x0000000007946000-memory.dmp

Filesize
600KB

Download
memory/2328-205-0x0000000000140000-0x00000000001A6000-memory.dmp

Filesize
408KB

Download
memory/3528-181-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3528-177-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3528-169-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download