blustealer | cba897dc82a468040a082fd6135edecb8dcdcd0f0fe1375adeaeff3262cc6504

Resubmissions

25/01/2022, 19:02

220125-xqabjsdea610

11/09/2021, 07:46

210911-jly78aecdr7

Analysis

max time kernel
140s
max time network
146s
platform
windows10_x64
resource
win10-en-20211208
submitted
25/01/2022, 19:02

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General

Target
c156f5367443c436b6a54f16a725d261.exe
Size 693KB
Sample220125-xqabjsdea6
SHA256 cba897dc82a468040a082fd6135edecb8dcdcd0f0fe1375adeaeff3262cc6504
MD5 c156f5367443c436b6a54f16a725d261
SHA1 774549155b8bf2a455db51444ed3cb277081ca6b
SHA512 b796c81cba0ba75cda33252adbf4ee40b659a7c714e4bce1e81c3d39ada8555bd890ad9930c3ae9657e3460b696e3a26514a960a8d86b968953859aa7ce7be3b
MD5 SHA1 SHA512

Score

10^/10

blustealer stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol
smtp
Host
bojtai.club
Port
587
Username
[email protected]
Password
BqYD=SYf~ueg

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69

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

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
976	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	c156f5367443c436b6a54f16a725d261.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2952	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 2952	2760	c156f5367443c436b6a54f16a725d261.exe	69
PID 2760 wrote to memory of 3816	2760	c156f5367443c436b6a54f16a725d261.exe	73
PID 2760 wrote to memory of 3816	2760	c156f5367443c436b6a54f16a725d261.exe	73
PID 2760 wrote to memory of 3816	2760	c156f5367443c436b6a54f16a725d261.exe	73
PID 2760 wrote to memory of 700	2760	c156f5367443c436b6a54f16a725d261.exe	75
PID 2760 wrote to memory of 700	2760	c156f5367443c436b6a54f16a725d261.exe	75
PID 2760 wrote to memory of 700	2760	c156f5367443c436b6a54f16a725d261.exe	75
PID 3816 wrote to memory of 976	3816	cmd.exe	77
PID 3816 wrote to memory of 976	3816	cmd.exe	77
PID 3816 wrote to memory of 976	3816	cmd.exe	77

C:\Users\Admin\AppData\Local\Temp\c156f5367443c436b6a54f16a725d261.exe
"C:\Users\Admin\AppData\Local\Temp\c156f5367443c436b6a54f16a725d261.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2952
- 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\cgbr\cgbr.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3816
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\cgbr\cgbr.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\c156f5367443c436b6a54f16a725d261.exe" "C:\Users\Admin\AppData\Roaming\cgbr\cgbr.exe"
  2⤵
  PID:700

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2760-115-0x0000000000E90000-0x0000000000F42000-memory.dmp

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memory/2760-116-0x0000000005860000-0x0000000005861000-memory.dmp

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memory/2760-117-0x0000000005D70000-0x000000000626E000-memory.dmp

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memory/2760-118-0x0000000005A50000-0x0000000005AE2000-memory.dmp

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memory/2760-119-0x0000000005A20000-0x0000000005A2A000-memory.dmp

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memory/2760-125-0x0000000001670000-0x00000000016D6000-memory.dmp

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memory/2952-120-0x0000000000400000-0x000000000047A000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads