blustealer | ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

Analysis

max time kernel
142s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2023 07:14

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General

Target

07487299.exe
Size

57KB
MD5

f40a160dfddf79de154ad448c33c2e45
SHA1

6edf15758a6618a0e357cf220225c54c10f4fc9f
SHA256

ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f
SHA512

b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503
SSDEEP

1536:UwlxZCBDfbP7W71uMVV1GMeaDySRImGzaref9uT:UwlxZQfbP7WbV1xeuySRIm4ayf9uT

Score

10^/10

blustealer collection persistence 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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	07487299.exe

Executes dropped EXE 1 IoCs

pid	Process
4808	svchost.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	07487299.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4808 set thread context of 2224	4808	svchost.exe	119
PID 2224 set thread context of 1360	2224	AddInProcess32.exe	120

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

T1053

pid	Process
4824	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4896	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
2172	07487299.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe
4808	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	07487299.exe
Token: SeDebugPrivilege	4808	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2224	AddInProcess32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 4632	2172	07487299.exe	85
PID 2172 wrote to memory of 4632	2172	07487299.exe	85
PID 2172 wrote to memory of 1560	2172	07487299.exe	87
PID 2172 wrote to memory of 1560	2172	07487299.exe	87
PID 4632 wrote to memory of 4824	4632	cmd.exe	89
PID 4632 wrote to memory of 4824	4632	cmd.exe	89
PID 1560 wrote to memory of 4896	1560	cmd.exe	90
PID 1560 wrote to memory of 4896	1560	cmd.exe	90
PID 1560 wrote to memory of 4808	1560	cmd.exe	91
PID 1560 wrote to memory of 4808	1560	cmd.exe	91
PID 4808 wrote to memory of 2424	4808	svchost.exe	92
PID 4808 wrote to memory of 2424	4808	svchost.exe	92
PID 4808 wrote to memory of 2748	4808	svchost.exe	93
PID 4808 wrote to memory of 2748	4808	svchost.exe	93
PID 4808 wrote to memory of 1760	4808	svchost.exe	94
PID 4808 wrote to memory of 1760	4808	svchost.exe	94
PID 4808 wrote to memory of 2680	4808	svchost.exe	95
PID 4808 wrote to memory of 2680	4808	svchost.exe	95
PID 4808 wrote to memory of 3592	4808	svchost.exe	96
PID 4808 wrote to memory of 3592	4808	svchost.exe	96
PID 4808 wrote to memory of 4996	4808	svchost.exe	97
PID 4808 wrote to memory of 4996	4808	svchost.exe	97
PID 4808 wrote to memory of 4292	4808	svchost.exe	98
PID 4808 wrote to memory of 4292	4808	svchost.exe	98
PID 4808 wrote to memory of 5084	4808	svchost.exe	99
PID 4808 wrote to memory of 5084	4808	svchost.exe	99
PID 4808 wrote to memory of 5084	4808	svchost.exe	99
PID 4808 wrote to memory of 1844	4808	svchost.exe	100
PID 4808 wrote to memory of 1844	4808	svchost.exe	100
PID 4808 wrote to memory of 4116	4808	svchost.exe	101
PID 4808 wrote to memory of 4116	4808	svchost.exe	101
PID 4808 wrote to memory of 1060	4808	svchost.exe	102
PID 4808 wrote to memory of 1060	4808	svchost.exe	102
PID 4808 wrote to memory of 4108	4808	svchost.exe	103
PID 4808 wrote to memory of 4108	4808	svchost.exe	103
PID 4808 wrote to memory of 1168	4808	svchost.exe	104
PID 4808 wrote to memory of 1168	4808	svchost.exe	104
PID 4808 wrote to memory of 2784	4808	svchost.exe	105
PID 4808 wrote to memory of 2784	4808	svchost.exe	105
PID 4808 wrote to memory of 420	4808	svchost.exe	106
PID 4808 wrote to memory of 420	4808	svchost.exe	106
PID 4808 wrote to memory of 1956	4808	svchost.exe	107
PID 4808 wrote to memory of 1956	4808	svchost.exe	107
PID 4808 wrote to memory of 2920	4808	svchost.exe	108
PID 4808 wrote to memory of 2920	4808	svchost.exe	108
PID 4808 wrote to memory of 3416	4808	svchost.exe	109
PID 4808 wrote to memory of 3416	4808	svchost.exe	109
PID 4808 wrote to memory of 4884	4808	svchost.exe	110
PID 4808 wrote to memory of 4884	4808	svchost.exe	110
PID 4808 wrote to memory of 364	4808	svchost.exe	111
PID 4808 wrote to memory of 364	4808	svchost.exe	111
PID 4808 wrote to memory of 216	4808	svchost.exe	112
PID 4808 wrote to memory of 216	4808	svchost.exe	112
PID 4808 wrote to memory of 244	4808	svchost.exe	113
PID 4808 wrote to memory of 244	4808	svchost.exe	113
PID 4808 wrote to memory of 228	4808	svchost.exe	114
PID 4808 wrote to memory of 228	4808	svchost.exe	114
PID 4808 wrote to memory of 112	4808	svchost.exe	115
PID 4808 wrote to memory of 112	4808	svchost.exe	115
PID 4808 wrote to memory of 4328	4808	svchost.exe	116
PID 4808 wrote to memory of 4328	4808	svchost.exe	116
PID 4808 wrote to memory of 1868	4808	svchost.exe	117
PID 4808 wrote to memory of 1868	4808	svchost.exe	117
PID 4808 wrote to memory of 1056	4808	svchost.exe	118

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\07487299.exe
"C:\Users\Admin\AppData\Local\Temp\07487299.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4824
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7EE9.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1560
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4896
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4808
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe"
      4⤵
      PID:2424
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe"
      4⤵
      PID:2748
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngentask.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngentask.exe"
      4⤵
      PID:1760
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe"
      4⤵
      PID:2680
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe"
      4⤵
      PID:3592
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ServiceModelReg.exe"
      4⤵
      PID:4996
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe"
      4⤵
      PID:4292
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe"
      4⤵
      PID:5084
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe"
      4⤵
      PID:1844
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe"
      4⤵
      PID:4116
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1060
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\DataSvcUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\DataSvcUtil.exe"
      4⤵
      PID:4108
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe"
      4⤵
      PID:1168
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe"
      4⤵
      PID:2784
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\CasPol.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\CasPol.exe"
      4⤵
      PID:420
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_state.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_state.exe"
      4⤵
      PID:1956
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"
      4⤵
      PID:2920
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ilasm.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ilasm.exe"
      4⤵
      PID:3416
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe"
      4⤵
      PID:4884
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:364
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe"
      4⤵
      PID:216
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe"
      4⤵
      PID:244
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe"
      4⤵
      PID:228
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe"
      4⤵
      PID:112
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe"
      4⤵
      PID:4328
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\WsatConfig.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\WsatConfig.exe"
      4⤵
      PID:1868
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe"
      4⤵
      PID:1056
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      PID:2224
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        5⤵
        Accesses Microsoft Outlook profiles
        outlook_office_path
        outlook_win_path
        
        PID:1360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

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\tmp7EE9.tmp.bat

Filesize
151B

MD5
75c8e764dac8cdd8f34f528f28cafe16

SHA1
24c1849da6a94b059693eec6ff8c4099b2af7094

SHA256
7a7f8016ef01bdf96e06e35c4c7ac8cc2aef6914bbb4ace954d88df372eca129

SHA512
8d9938f4184c57ca37e79a8decf0e5bf43b3945a54aeedc96996942c78589d27f11c48c4bc0b591368028b5f98a7e5d8fd78809a961018648a2fc1fa59b27f0c

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
57KB

MD5
f40a160dfddf79de154ad448c33c2e45

SHA1
6edf15758a6618a0e357cf220225c54c10f4fc9f

SHA256
ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

SHA512
b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
57KB

MD5
f40a160dfddf79de154ad448c33c2e45

SHA1
6edf15758a6618a0e357cf220225c54c10f4fc9f

SHA256
ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

SHA512
b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503

Download Submit
memory/1360-151-0x0000000001190000-0x00000000011F6000-memory.dmp

Filesize
408KB

Download
memory/1360-152-0x0000000005970000-0x0000000005A0C000-memory.dmp

Filesize
624KB

Download
memory/2172-133-0x0000023573CD0000-0x0000023573CE2000-memory.dmp

Filesize
72KB

Download
memory/2172-134-0x0000023576640000-0x0000023576B68000-memory.dmp

Filesize
5.2MB

Download
memory/2172-135-0x0000023576100000-0x0000023576110000-memory.dmp

Filesize
64KB

Download
memory/2224-144-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2224-147-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2224-150-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2224-154-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download