bazarloader | b51cb6fa584a073fe95bcf8749cf84363cb431f520a5d97cec92aae88329b7cb | Triage

Analysis

max time kernel
97s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20220331-en
submitted
04-04-2022 03:24

Sharing

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General

Target

fileman.dll
Size

213KB
MD5

6f3be0dfe6b5971b16464b7924772445
SHA1

8af5e975c00f5bdbd843f644a60adbb5f8da8a0d
SHA256

b51cb6fa584a073fe95bcf8749cf84363cb431f520a5d97cec92aae88329b7cb
SHA512

a1a8d49ec7610c37284a2e9f7409f1f93343c7d9c676985b9a3759388835880e7e376451e89294654cb4fc0f6c6386876896da50347c8bc4a98b80b1825cd5ef

Score

10^/10

bazarloader dropper loader

Malware Config

Extracted

Family

bazarloader

C2

148.163.42.213

5.255.102.10

188.127.235.177

23.160.193.221

reddew28c.bazar

bluehail.bazar

whitestorm9p.bazar

Signatures

Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
loader dropper bazarloader

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.execmd.exe

description	pid	process	target process
PID 4660 wrote to memory of 4384	4660	rundll32.exe	cmd.exe
PID 4660 wrote to memory of 4384	4660	rundll32.exe	cmd.exe
PID 4384 wrote to memory of 4628	4384	cmd.exe	choice.exe
PID 4384 wrote to memory of 4628	4384	cmd.exe	choice.exe
PID 4384 wrote to memory of 2184	4384	cmd.exe	rundll32.exe
PID 4384 wrote to memory of 2184	4384	cmd.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fileman.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4660

C:\Windows\system32\cmd.exe
cmd /c choice /n /c y /d y /t 8 & "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\fileman.dll", #1 ZF3bI6aD VI0rr2aG & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4384

C:\Windows\system32\choice.exe
choice /n /c y /d y /t 8
3⤵
PID:4628

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\fileman.dll", #1 ZF3bI6aD VI0rr2aG
3⤵
PID:2184

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2184-127-0x0000000000000000-mapping.dmp

Download
memory/2184-128-0x0000015C521E0000-0x0000015C52200000-memory.dmp

Filesize
128KB

Download
memory/4384-125-0x0000000000000000-mapping.dmp

Download
memory/4628-126-0x0000000000000000-mapping.dmp

Download
memory/4660-124-0x000001A9F99C0000-0x000001A9F99E0000-memory.dmp

Filesize
128KB

Download