d16dddc1e9ad69c5ef67afd93eb801c74ca5b95ec8b46741786c8c8ec47b1b1d

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 14:29

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General

Target

heur002.dll
Size

117KB
MD5

ee21fd7fa9a45453ed55ccb7ce7b9aaa
SHA1

335d0f3bad37dfc77cafa85b2f56c27688e64e7d
SHA256

1f6a5cd4ec1e361925b80b7b4f18b77ff70f0d27d5f6bc043f605363f1f2ef05
SHA512

d8c244c3f188a9a348cf32f1982fe4a7ff7c5a21e45ef8a5a69033b7287fd1b83bf83de2659f9cdcd516e4bef17d84cec2f0a0abcb59108127f2c2ab771f865d
SSDEEP

3072:p0WzeOMDsoAwOSxoPMVsf0nQla8vxgs2N+r3rYF:uWq/DsRgPvSCsDr3r

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 3 IoCs

Processes:

rundll32.exe

description	ioc	process
File created	C:\Windows\Nail.exe	rundll32.exe
File opened for modification	C:\Windows\Nail.exe	rundll32.exe
File created	C:\Windows\Nail.txt	rundll32.exe

Modifies registry class 3 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2256 wrote to memory of 620	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 620	2256	rundll32.exe	rundll32.exe
PID 2256 wrote to memory of 620	2256	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\heur002.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2256

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\heur002.dll,#1
2⤵
- Drops file in Windows directory
- Modifies registry class
PID:620

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\Nail.txt
Filesize
1024B

MD5
8eb85022cce2fe906582fda63342960c

SHA1
a9af95b43fa57d35b74e07d13cf5157844f1ed23

SHA256
44a4f3ecc18c319e588e701abb5751131b1287a9223f17c75728fd33e71aaaab

SHA512
6f698738439fab644d0e87ff6510afdb0426f6117b3c0f7108164d911e1ff123ce20c1883ac0b633e3377d2e08760c84206fd4ff2b8a0127074b8ce43ddd53dc

Download Submit
memory/620-7-0x0000000002C00000-0x0000000002C01000-memory.dmp

Filesize
4KB

Download
memory/620-5-0x0000000002DC0000-0x0000000002DC1000-memory.dmp

Filesize
4KB

Download
memory/620-15-0x0000000002F70000-0x0000000002F71000-memory.dmp

Filesize
4KB

Download
memory/620-4-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/620-16-0x0000000002F30000-0x0000000002F31000-memory.dmp

Filesize
4KB

Download
memory/620-6-0x0000000002DB0000-0x0000000002DB1000-memory.dmp

Filesize
4KB

Download
memory/620-0-0x0000000010000000-0x0000000010023000-memory.dmp

Filesize
140KB

Download
memory/620-8-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

Filesize
4KB

Download
memory/620-9-0x0000000002BF0000-0x0000000002BF1000-memory.dmp

Filesize
4KB

Download
memory/620-10-0x0000000002E30000-0x0000000002E31000-memory.dmp

Filesize
4KB

Download
memory/620-12-0x0000000002F50000-0x0000000002F51000-memory.dmp

Filesize
4KB

Download
memory/620-17-0x0000000002F40000-0x0000000002F41000-memory.dmp

Filesize
4KB

Download
memory/620-13-0x0000000002F90000-0x0000000002F91000-memory.dmp

Filesize
4KB

Download
memory/620-14-0x0000000002F80000-0x0000000002F81000-memory.dmp

Filesize
4KB

Download
memory/620-2-0x0000000002E00000-0x0000000002E01000-memory.dmp

Filesize
4KB

Download
memory/620-3-0x0000000002BE0000-0x0000000002BE1000-memory.dmp

Filesize
4KB

Download
memory/620-11-0x0000000002F60000-0x0000000002F61000-memory.dmp

Filesize
4KB

Download
memory/620-18-0x0000000002DE0000-0x0000000002DE1000-memory.dmp

Filesize
4KB

Download
memory/620-19-0x0000000002E10000-0x0000000002E11000-memory.dmp

Filesize
4KB

Download
memory/620-20-0x0000000002EB0000-0x0000000002EB1000-memory.dmp

Filesize
4KB

Download
memory/620-1-0x0000000002C10000-0x0000000002C3C000-memory.dmp

Filesize
176KB

Download
memory/620-23-0x0000000002ED0000-0x0000000002ED1000-memory.dmp

Filesize
4KB

Download
memory/620-27-0x0000000002EC0000-0x0000000002EC1000-memory.dmp

Filesize
4KB

Download
memory/620-28-0x0000000002EE0000-0x0000000002EE1000-memory.dmp

Filesize
4KB

Download
memory/620-29-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

Filesize
4KB

Download
memory/620-30-0x0000000002F20000-0x0000000002F21000-memory.dmp

Filesize
4KB

Download
memory/620-31-0x0000000002F10000-0x0000000002F11000-memory.dmp

Filesize
4KB

Download
memory/620-32-0x0000000002F00000-0x0000000002F01000-memory.dmp

Filesize
4KB

Download
memory/620-33-0x0000000002F00000-0x0000000002F01000-memory.dmp

Filesize
4KB

Download