blustealer | 1d0e997a1e0cca7446644a5082da18ea191862c85a3e222b0296bdb158c2a387

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

C2

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

Processes:

T98765434567898.exe

pid process

1268 T98765434567898.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

T98765434567898.exe

description pid process target process

PID 1268 set thread context of 672 1268 T98765434567898.exe T98765434567898.exe
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

Processes:

T98765434567898.exe

pid process

672 T98765434567898.exe

pid	process
1268	T98765434567898.exe

description	pid	process	target process
PID 1268 set thread context of 672	1268	T98765434567898.exe	T98765434567898.exe

pid	process
672	T98765434567898.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

T98765434567898.exe

description	pid	process	target process
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe
PID 1268 wrote to memory of 672	1268	T98765434567898.exe	T98765434567898.exe

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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsyDE9D.tmp\gyyrofsvwt.dll

MD5
593ae51744a3a1518c88249d88f6e0d8

SHA1
799fc91d7871e4387fd487da8c066a5908263088

SHA256
f5b07baf233029ae6a86a512fd84161c07d27827ef0222eea9783296249f646b

SHA512
91d538a964f803b97b5983ca7bfab265cbfca1d481c9da7038d478bef56cea033cd9fc7acaf18b5a9680fb684cacab950df66fc9b4264ba8b5ed63c56e80cf6a

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

Filesize
1.0MB

Download
memory/672-57-0x000000000040261C-mapping.dmp

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

Analysis

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