37f9ef58121be8aea583bce2112f5192bbff22aa3eda063f1978626bc42d6177 | Triage

Analysis

max time kernel
140s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/05/2024, 05:15

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General

Target

zlib1.dll
Size

105KB
MD5

b8a9e91134e7c89440a0f95470d5e47b
SHA1

3cbcee30fc0a7e9807931bc0dafceb627042bfc9
SHA256

42967a768f341d9ce5174eb38a4d63754c3c41739e7d88f4e39cd7354c1fac71
SHA512

e8583ea94b9d1321889359317e367abc88e90e96d0d9243258244a527ffa2b13ab97d0787693ca328960ceb934ea11eefd14abafd640a654473c26e420d2ec54
SSDEEP

3072:Y15jVjUqf9CtXH/4UghkGTBfmJyqLEC9BRY:Yf81wpTB+Jyqb

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2608	2852	WerFault.exe	28

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2856 wrote to memory of 2852	2856	rundll32.exe	28
PID 2852 wrote to memory of 2608	2852	rundll32.exe	29
PID 2852 wrote to memory of 2608	2852	rundll32.exe	29
PID 2852 wrote to memory of 2608	2852	rundll32.exe	29
PID 2852 wrote to memory of 2608	2852	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 224
    3⤵
    - Program crash
    PID:2608

Network

MITRE ATT&CK Matrix

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Downloads

memory/2852-0-0x0000000062E80000-0x0000000062EA2000-memory.dmp

Filesize
136KB

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