b5abacf24ae5aa96016c09f71a78d0121fff396d6154740eab622c4751e1764f | Triage

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220310-en
submitted
11-04-2022 02:59

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General

Target

arnuceol.dll
Size

348KB
MD5

dca3f0a3eecf16ac4b72615d712112e9
SHA1

909870e8ea76626fbe13e2c960560c2a165bd102
SHA256

b5abacf24ae5aa96016c09f71a78d0121fff396d6154740eab622c4751e1764f
SHA512

4bb8558e76f78b1078526952420789552930119fff8a8163d86e809186bcc7f2d2b78ee1475bc2d143648a1e890da841f0dd24704a3a1b93783b686cd95dd510

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 7 IoCs

flow	pid	Process
15	2872	rundll32.exe
29	2872	rundll32.exe
33	2872	rundll32.exe
34	2872	rundll32.exe
35	2872	rundll32.exe
39	2872	rundll32.exe
40	2872	rundll32.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 2872	4044	rundll32.exe	79
PID 4044 wrote to memory of 2872	4044	rundll32.exe	79
PID 4044 wrote to memory of 2872	4044	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\arnuceol.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\arnuceol.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  PID:2872

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2872-135-0x0000000002AA0000-0x0000000002AC1000-memory.dmp

Filesize
132KB

Download
memory/2872-136-0x0000000010000000-0x000000001005C000-memory.dmp

Filesize
368KB

Download