blustealer | 481040d8ec2c9253e10b7d7bd1712ea29db40c98aae1b58ee21a6f5fcc64854d

Analysis

max time kernel
138s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 01:21

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General

Target

641be17bc535de14c143b803d9da4d1b.exe
Size

2.3MB
MD5

641be17bc535de14c143b803d9da4d1b
SHA1

42f20588bebcda54ee7482a01c4c12876d1d11a2
SHA256

481040d8ec2c9253e10b7d7bd1712ea29db40c98aae1b58ee21a6f5fcc64854d
SHA512

eea941e06e604db321faa5f4cc1c9d6c036b1eb915c517210434bb688a46517db792ff07ca215403a482550b317bd693779ee96f5b588ca02a5ab56d932674a1
SSDEEP

12288:Pr2WbxQJ6iVmp153F8bQRs2Wb4xRH3xImOj9a4ENpjPsh10LYoE5UcyZmexxlcUa:PrVbxi66I1F8bQDDW9/Esh10LYo/0

Score

10^/10

blustealer stealer

Malware Config

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	641be17bc535de14c143b803d9da4d1b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	noot.exe

Executes dropped EXE 1 IoCs

pid	Process
4508	noot.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3176 set thread context of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 4508 set thread context of 2876	4508	noot.exe	108

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/Job

T1053

pid	Process
1756	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3176	641be17bc535de14c143b803d9da4d1b.exe
Token: SeDebugPrivilege	4508	noot.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 4964	3176	641be17bc535de14c143b803d9da4d1b.exe	89
PID 3176 wrote to memory of 4964	3176	641be17bc535de14c143b803d9da4d1b.exe	89
PID 3176 wrote to memory of 4964	3176	641be17bc535de14c143b803d9da4d1b.exe	89
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 3460	3176	641be17bc535de14c143b803d9da4d1b.exe	91
PID 3176 wrote to memory of 2980	3176	641be17bc535de14c143b803d9da4d1b.exe	100
PID 3176 wrote to memory of 2980	3176	641be17bc535de14c143b803d9da4d1b.exe	100
PID 3176 wrote to memory of 2980	3176	641be17bc535de14c143b803d9da4d1b.exe	100
PID 3176 wrote to memory of 2972	3176	641be17bc535de14c143b803d9da4d1b.exe	102
PID 3176 wrote to memory of 2972	3176	641be17bc535de14c143b803d9da4d1b.exe	102
PID 3176 wrote to memory of 2972	3176	641be17bc535de14c143b803d9da4d1b.exe	102
PID 2980 wrote to memory of 1756	2980	cmd.exe	104
PID 2980 wrote to memory of 1756	2980	cmd.exe	104
PID 2980 wrote to memory of 1756	2980	cmd.exe	104
PID 4508 wrote to memory of 3268	4508	noot.exe	106
PID 4508 wrote to memory of 3268	4508	noot.exe	106
PID 4508 wrote to memory of 3268	4508	noot.exe	106
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108
PID 4508 wrote to memory of 2876	4508	noot.exe	108

C:\Users\Admin\AppData\Local\Temp\641be17bc535de14c143b803d9da4d1b.exe
"C:\Users\Admin\AppData\Local\Temp\641be17bc535de14c143b803d9da4d1b.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:4964
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:3460
- 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\noot\noot.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2980
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\noot\noot.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\641be17bc535de14c143b803d9da4d1b.exe" "C:\Users\Admin\AppData\Roaming\noot\noot.exe"
  2⤵
  PID:2972

C:\Users\Admin\AppData\Roaming\noot\noot.exe
C:\Users\Admin\AppData\Roaming\noot\noot.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:3268
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2.3MB

MD5
641be17bc535de14c143b803d9da4d1b

SHA1
42f20588bebcda54ee7482a01c4c12876d1d11a2

SHA256
481040d8ec2c9253e10b7d7bd1712ea29db40c98aae1b58ee21a6f5fcc64854d

SHA512
eea941e06e604db321faa5f4cc1c9d6c036b1eb915c517210434bb688a46517db792ff07ca215403a482550b317bd693779ee96f5b588ca02a5ab56d932674a1

Download Submit
memory/3176-3-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/3176-2-0x0000000005850000-0x0000000005DF4000-memory.dmp

Filesize
5.6MB

Download
memory/3176-0-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/3176-4-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/3176-5-0x00000000056C0000-0x00000000056CA000-memory.dmp

Filesize
40KB

Download
memory/3176-8-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/3176-9-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/3176-1-0x0000000000810000-0x0000000000A58000-memory.dmp

Filesize
2.3MB

Download
memory/3460-6-0x0000000000210000-0x0000000000286000-memory.dmp

Filesize
472KB

Download
memory/4508-14-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4508-15-0x0000000000C30000-0x0000000000E78000-memory.dmp

Filesize
2.3MB

Download
memory/4508-16-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads