nloader | 93cc5e6a6b671d9b0124ade32ae8b09269de9f03c5c5e66347fbfc7a8c3b305e | Triage

Analysis

max time kernel
103s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2022 20:33

Sharing

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General

Target

4123.do1.dll
Size

48KB
MD5

f776deb4df137b37dcae5406c8f3a07a
SHA1

f6a31b594fca39c118927405fa4d14353b8fd49a
SHA256

93cc5e6a6b671d9b0124ade32ae8b09269de9f03c5c5e66347fbfc7a8c3b305e
SHA512

4077b4214b4683bb4776d470027e61fcc3cb3e78beb9377674e4a4de9115d52911e39cb29a566ab446c6962a252ce01020ffd616b5854a9d8230414262bfafe2
SSDEEP

768:fw2jnhaqqUgQeONXr27iLAkfP69FyfQZWBS:hjnEQeON727CA2G

Score

10^/10

nloader loader

Malware Config

Signatures

Nloader
Simple loader that includes the keyword 'campo' in the URL used to download other families.
loader nloader

Nloader payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/424-133-0x00000000014E0000-0x00000000014E9000-memory.dmp	nloader
behavioral2/memory/424-137-0x0000000002FE0000-0x0000000002FE7000-memory.dmp	nloader
behavioral2/memory/424-140-0x0000000003000000-0x0000000003005000-memory.dmp	nloader
behavioral2/memory/424-143-0x00000000014B0000-0x00000000014B6000-memory.dmp	nloader

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3548 424 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3628 wrote to memory of 424	3628	rundll32.exe	rundll32.exe
PID 3628 wrote to memory of 424	3628	rundll32.exe	rundll32.exe
PID 3628 wrote to memory of 424	3628	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.do1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.do1.dll,#1
  2⤵
  PID:424
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 424 -s 904
    3⤵
    - Program crash
    PID:3548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 424 -ip 424
1⤵
PID:2812

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/424-132-0x0000000000000000-mapping.dmp

Download
memory/424-133-0x00000000014E0000-0x00000000014E9000-memory.dmp

Filesize
36KB

Download
memory/424-137-0x0000000002FE0000-0x0000000002FE7000-memory.dmp

Filesize
28KB

Download
memory/424-140-0x0000000003000000-0x0000000003005000-memory.dmp

Filesize
20KB

Download
memory/424-143-0x00000000014B0000-0x00000000014B6000-memory.dmp

Filesize
24KB

Download