blustealer | 9e24a8e4cef47a41f9434fddf3ce24b754d3ba105cdf10ab936b446d0e700e7d

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-en-20211208
submitted
15/12/2021, 01:52

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General

Target
Product-63036500212_IMG.exe
Size 1.0MB
Sample211215-caeacagfa8
SHA256 9e24a8e4cef47a41f9434fddf3ce24b754d3ba105cdf10ab936b446d0e700e7d
MD5 b0f6a1985213d6310bc369bf747e3f19
SHA1 630617c252229ff0239345896ac7440aa53857ee
SHA512 a7c80806c47233c05d27222f975e3c09ed5e0d32bb59e74a3f8b3ed84c9842b6a9ebb297b949dd5d770134ea0cf90783554a5a8e28fe47371347310df8da5995
MD5 SHA1 SHA512

Score

10^/10

blustealer stealer

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1344	sobu.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\abc.txt	sobu.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1588 set thread context of 544	1588	Product-63036500212_IMG.exe	27
PID 1344 set thread context of 1700	1344	sobu.exe	40

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1916	schtasks.exe
568	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	Product-63036500212_IMG.exe
Token: SeDebugPrivilege	1344	sobu.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
544	vbc.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 544	1588	Product-63036500212_IMG.exe	27
PID 1588 wrote to memory of 2032	1588	Product-63036500212_IMG.exe	29
PID 1588 wrote to memory of 2032	1588	Product-63036500212_IMG.exe	29
PID 1588 wrote to memory of 2032	1588	Product-63036500212_IMG.exe	29
PID 1588 wrote to memory of 2032	1588	Product-63036500212_IMG.exe	29
PID 1588 wrote to memory of 432	1588	Product-63036500212_IMG.exe	30
PID 1588 wrote to memory of 432	1588	Product-63036500212_IMG.exe	30
PID 1588 wrote to memory of 432	1588	Product-63036500212_IMG.exe	30
PID 1588 wrote to memory of 432	1588	Product-63036500212_IMG.exe	30
PID 1588 wrote to memory of 1100	1588	Product-63036500212_IMG.exe	32
PID 1588 wrote to memory of 1100	1588	Product-63036500212_IMG.exe	32
PID 1588 wrote to memory of 1100	1588	Product-63036500212_IMG.exe	32
PID 1588 wrote to memory of 1100	1588	Product-63036500212_IMG.exe	32
PID 432 wrote to memory of 1916	432	cmd.exe	35
PID 432 wrote to memory of 1916	432	cmd.exe	35
PID 432 wrote to memory of 1916	432	cmd.exe	35
PID 432 wrote to memory of 1916	432	cmd.exe	35
PID 1504 wrote to memory of 1344	1504	taskeng.exe	37
PID 1504 wrote to memory of 1344	1504	taskeng.exe	37
PID 1504 wrote to memory of 1344	1504	taskeng.exe	37
PID 1504 wrote to memory of 1344	1504	taskeng.exe	37
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1700	1344	sobu.exe	40
PID 1344 wrote to memory of 1720	1344	sobu.exe	41
PID 1344 wrote to memory of 1720	1344	sobu.exe	41
PID 1344 wrote to memory of 1720	1344	sobu.exe	41
PID 1344 wrote to memory of 1720	1344	sobu.exe	41
PID 1344 wrote to memory of 1480	1344	sobu.exe	42
PID 1344 wrote to memory of 1480	1344	sobu.exe	42
PID 1344 wrote to memory of 1480	1344	sobu.exe	42
PID 1344 wrote to memory of 1480	1344	sobu.exe	42
PID 1344 wrote to memory of 888	1344	sobu.exe	44
PID 1344 wrote to memory of 888	1344	sobu.exe	44
PID 1344 wrote to memory of 888	1344	sobu.exe	44
PID 1344 wrote to memory of 888	1344	sobu.exe	44
PID 1480 wrote to memory of 568	1480	cmd.exe	47
PID 1480 wrote to memory of 568	1480	cmd.exe	47
PID 1480 wrote to memory of 568	1480	cmd.exe	47
PID 1480 wrote to memory of 568	1480	cmd.exe	47

C:\Users\Admin\AppData\Local\Temp\Product-63036500212_IMG.exe
"C:\Users\Admin\AppData\Local\Temp\Product-63036500212_IMG.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:544
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\sobu"
  2⤵
  PID:2032
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\sobu\sobu.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\sobu\sobu.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\Product-63036500212_IMG.exe" "C:\Users\Admin\AppData\Roaming\sobu\sobu.exe"
  2⤵
  PID:1100

C:\Windows\system32\taskeng.exe
taskeng.exe {BDA53EA6-C0FC-4CFC-A2E3-078100D45F79} S-1-5-21-3846991908-3261386348-1409841751-1000:VQVVOAJK\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Roaming\sobu\sobu.exe
  C:\Users\Admin\AppData\Roaming\sobu\sobu.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1344
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:1700
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\sobu"
    3⤵
    PID:1720
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\sobu\sobu.exe'" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1480
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\sobu\sobu.exe'" /f
      4⤵
      Creates scheduled task(s)
      PID:568
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c copy "C:\Users\Admin\AppData\Roaming\sobu\sobu.exe" "C:\Users\Admin\AppData\Roaming\sobu\sobu.exe"
    3⤵
    PID:888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/544-58-0x0000000000400000-0x000000000049F000-memory.dmp

Download

memory/544-60-0x0000000000400000-0x000000000049F000-memory.dmp

Download

memory/544-57-0x0000000000400000-0x000000000049F000-memory.dmp

Download

memory/544-62-0x0000000000180000-0x0000000000186000-memory.dmp

Download

memory/544-63-0x0000000000180000-0x000000000018A000-memory.dmp

Download

memory/544-56-0x0000000000400000-0x000000000049F000-memory.dmp

Download

memory/544-68-0x0000000000400000-0x000000000049F000-memory.dmp

Download

memory/1344-74-0x0000000002210000-0x0000000002211000-memory.dmp

Download

memory/1344-72-0x00000000002F0000-0x00000000002F1000-memory.dmp

Download

memory/1588-53-0x0000000000F40000-0x0000000000F41000-memory.dmp

Download

memory/1588-55-0x0000000004600000-0x0000000004601000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads