blister | f9508e81f1ac31569646fde9e864e25212457ca62ac768e23fbb95c290950e99

Analysis

max time kernel
59s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2022 15:50

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General

Target

2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3.exe
Size

1.1MB
MD5

70f3bf9c31361ebe3e39afc4f05fa160
SHA1

0d1c448b739b18d0e277f2db264b7a6d3d957edd
SHA256

2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3
SHA512

2f1f64c8a20bc753232f7ce912f8dca36db06338df81393b95434dd5e5e60b9fd11aca3f61105eec3eb2c8bd8fd13a31d7bd6713e1e098ea251ae4511cb821f2
SSDEEP

24576:RXwmJ5CbuufVhiKWaoqdk5Tzq47Do4yykwA5BGeudzNd:llJ4budTzqScwAWeuZNd

Score

10^/10

blister loader

Malware Config

Signatures

BLISTER
BLISTER is a downloader used to deliver other malware families.
loader blister

Detect Blister loader x32 3 IoCs

loader

resource	yara_rule
behavioral20/files/0x0004000000022dd5-133.dat	family_blister_x32
behavioral20/files/0x0004000000022dd5-135.dat	family_blister_x32
behavioral20/memory/1116-136-0x0000000075700000-0x0000000075830000-memory.dmp	family_blister_x32

Loads dropped DLL 1 IoCs

pid	Process
1116	rundll32.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 WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2316	1508	2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3.exe	81
PID 1508 wrote to memory of 2316	1508	2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3.exe	81
PID 2316 wrote to memory of 1116	2316	Rundll32.exe	82
PID 2316 wrote to memory of 1116	2316	Rundll32.exe	82
PID 2316 wrote to memory of 1116	2316	Rundll32.exe	82

C:\Users\Admin\AppData\Local\Temp\2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3.exe
"C:\Users\Admin\AppData\Local\Temp\2aaa916d56cfe95abb65fbc222bfdfa2b16a3ffb6660c1bdc211004302a1aef3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\SYSTEM32\Rundll32.exe
  Rundll32.exe C:\Users\Admin\AppData\Local\Temp\rdpencom_tmp\rdpencom.dll,DllUnregisterServer
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Windows\SysWOW64\rundll32.exe
    Rundll32.exe C:\Users\Admin\AppData\Local\Temp\rdpencom_tmp\rdpencom.dll,DllUnregisterServer
    3⤵
    - Loads dropped DLL
    PID:1116

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

C:\Users\Admin\AppData\Local\Temp\rdpencom_tmp\rdpencom.dll

Filesize
1.2MB

MD5
a6d49b646ed61b91bcfe9c2170b258cd

SHA1
75c7cdddfbf538f51da8b74cbad11c302206750e

SHA256
c0f3b27ae4f7db457a86a38244225cca35aa0960eb6a685ed350e99a36c32b61

SHA512
18be0707af33a9c4e3b9c57e7c6a3a00b0a249acf606ccb7cc0d968a722637e8bfdc4f7d09da208cd9477ef915fd019ff171df8977c55481093c35d0ccf6a2cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\rdpencom_tmp\rdpencom.dll

Filesize
1.2MB

MD5
a6d49b646ed61b91bcfe9c2170b258cd

SHA1
75c7cdddfbf538f51da8b74cbad11c302206750e

SHA256
c0f3b27ae4f7db457a86a38244225cca35aa0960eb6a685ed350e99a36c32b61

SHA512
18be0707af33a9c4e3b9c57e7c6a3a00b0a249acf606ccb7cc0d968a722637e8bfdc4f7d09da208cd9477ef915fd019ff171df8977c55481093c35d0ccf6a2cc

Download Submit
memory/1116-136-0x0000000075700000-0x0000000075830000-memory.dmp

Filesize
1.2MB

Download