blustealer | b56d4ab0764e9a3cdcaa5c369dd48fb6e16541acd08da86ac0e53f45f6bf7ed0

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2025 15:30

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General

Target

Airway Bill Receipt - #50773009879.exe
Size

1.1MB
MD5

147df2e568f7f1ab66c80ee3750071c8
SHA1

95ae7d0650f3c0b3983bbc6c17e1906b3e885a08
SHA256

37a00c3fa2945635f627455fbe31e05146c69427df5dab9b9d0fa21a1bb14cb3
SHA512

e84bfb4b743377ea2d6fe1248ffa2e433b5d4d23d83c394ac6f92fb58cc840327eb734a87b21727bdad89f42ef522044710024ce5d5e6ec6808d1fd2ca39d694
SSDEEP

24576:w7rjjcpyXb3wGvgHFk9hYATuKYLLow2Fxa/a:cWyLKttLofxay

Score

10^/10

blustealer discovery stealer

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Airway Bill Receipt - #50773009879.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	dfxzdg.exe

Executes dropped EXE 1 IoCs

pid	Process
4692	dfxzdg.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4916 set thread context of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4692 set thread context of 3692	4692	dfxzdg.exe	104

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Airway Bill Receipt - #50773009879.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfxzdg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4812	schtasks.exe
3492	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	Airway Bill Receipt - #50773009879.exe
Token: SeDebugPrivilege	4692	dfxzdg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3692	vbc.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4808	4916	Airway Bill Receipt - #50773009879.exe	94
PID 4916 wrote to memory of 4600	4916	Airway Bill Receipt - #50773009879.exe	95
PID 4916 wrote to memory of 4600	4916	Airway Bill Receipt - #50773009879.exe	95
PID 4916 wrote to memory of 4600	4916	Airway Bill Receipt - #50773009879.exe	95
PID 4916 wrote to memory of 1800	4916	Airway Bill Receipt - #50773009879.exe	97
PID 4916 wrote to memory of 1800	4916	Airway Bill Receipt - #50773009879.exe	97
PID 4916 wrote to memory of 1800	4916	Airway Bill Receipt - #50773009879.exe	97
PID 4600 wrote to memory of 4812	4600	cmd.exe	99
PID 4600 wrote to memory of 4812	4600	cmd.exe	99
PID 4600 wrote to memory of 4812	4600	cmd.exe	99
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3692	4692	dfxzdg.exe	104
PID 4692 wrote to memory of 3116	4692	dfxzdg.exe	105
PID 4692 wrote to memory of 3116	4692	dfxzdg.exe	105
PID 4692 wrote to memory of 3116	4692	dfxzdg.exe	105
PID 4692 wrote to memory of 3632	4692	dfxzdg.exe	106
PID 4692 wrote to memory of 3632	4692	dfxzdg.exe	106
PID 4692 wrote to memory of 3632	4692	dfxzdg.exe	106
PID 3116 wrote to memory of 3492	3116	cmd.exe	109
PID 3116 wrote to memory of 3492	3116	cmd.exe	109
PID 3116 wrote to memory of 3492	3116	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\Airway Bill Receipt - #50773009879.exe
"C:\Users\Admin\AppData\Local\Temp\Airway Bill Receipt - #50773009879.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4600
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\Airway Bill Receipt - #50773009879.exe" "C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1800

C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe
C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe" "C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\dfxzdg\dfxzdg.exe

Filesize
1.1MB

MD5
147df2e568f7f1ab66c80ee3750071c8

SHA1
95ae7d0650f3c0b3983bbc6c17e1906b3e885a08

SHA256
37a00c3fa2945635f627455fbe31e05146c69427df5dab9b9d0fa21a1bb14cb3

SHA512
e84bfb4b743377ea2d6fe1248ffa2e433b5d4d23d83c394ac6f92fb58cc840327eb734a87b21727bdad89f42ef522044710024ce5d5e6ec6808d1fd2ca39d694

Download Submit
memory/3692-23-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/3692-20-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/4692-17-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4692-16-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4692-15-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4692-14-0x0000000000380000-0x00000000004A8000-memory.dmp

Filesize
1.2MB

Download
memory/4808-8-0x0000000000810000-0x000000000087A000-memory.dmp

Filesize
424KB

Download
memory/4916-0-0x000000007509E000-0x000000007509F000-memory.dmp

Filesize
4KB

Download
memory/4916-7-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4916-6-0x000000007509E000-0x000000007509F000-memory.dmp

Filesize
4KB

Download
memory/4916-5-0x0000000005620000-0x000000000562A000-memory.dmp

Filesize
40KB

Download
memory/4916-4-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4916-3-0x00000000052F0000-0x0000000005382000-memory.dmp

Filesize
584KB

Download
memory/4916-2-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/4916-1-0x0000000000E60000-0x0000000000F88000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads