blustealer | 1d0e997a1e0cca7446644a5082da18ea191862c85a3e222b0296bdb158c2a387

Analysis

max time kernel
123s
max time network
121s
platform
windows7_x64
resource
win7-en-20210920
submitted
12-10-2021 12:17

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General

Target

T98765434567898.exe
Size

1.2MB
MD5

abb26d1600dda55b1004b39d569178a8
SHA1

8e6cba40d4ddd9d6ff6b781f79febbb47e58855b
SHA256

1d0e997a1e0cca7446644a5082da18ea191862c85a3e222b0296bdb158c2a387
SHA512

8d560a240bba2f915ff5a7b05bd061cbc68c8ce2268ee8b6815834f00452232e4f63da89e8d9b565dec45f0e9df232931676caae8ac6242995d14ad1222eb3e4

Score

10^/10

blustealer stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot1838876767:AAEiDKTcT_A4WBwpMo9nnrtBP7OvsmEUnNU/sendMessage?chat_id=1300181783

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1268	T98765434567898.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1268 set thread context of 672	1268	T98765434567898.exe	27

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
672	T98765434567898.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	27

C:\Users\Admin\AppData\Local\Temp\T98765434567898.exe
"C:\Users\Admin\AppData\Local\Temp\T98765434567898.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\T98765434567898.exe
  "C:\Users\Admin\AppData\Local\Temp\T98765434567898.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/672-56-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download
memory/672-58-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/672-59-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download
memory/672-60-0x0000000000230000-0x000000000023A000-memory.dmp

Filesize
40KB

Download
memory/1268-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

Filesize
8KB

Download