5eadeba25ef4e49920fa50a8015124ea3de3d4ff55996a95835294edb1bf1fb6 | Triage

Analysis

max time kernel
20s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 22:00

Sharing

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General

Target

nfzn.dll
Size

327KB
MD5

91f1cdf9df39b6c0486277e4ef1818c7
SHA1

cba42ce5ddb87b5a521b6dc569a4296789f5fef2
SHA256

822bafa548278d2559660cfec702f0123d02ef0a1d4c23351acaebe28a7a9d3f
SHA512

65403e6d668b098bba136a7bfa146eab536c68587d55c202c6599539ccfabc9bedec7e60e7ee1284968cbee718781c6dff936f9b76f4cb39db2c2ca5901d27c0
SSDEEP

6144:9KleXWMzLp6p750N0exZUkf0Jx+GQB+TDsAVVEgjDf6STtlvAx0U/pkCm:z0y0ext++ITDBVEeDf6ktloxV/pI

Score

8^/10

vmprotect

Malware Config

Signatures

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

Processes:

resource	yara_rule
behavioral5/memory/952-56-0x0000000041700000-0x00000000417A6000-memory.dmp	vmprotect

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe
PID 968 wrote to memory of 952	968	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\nfzn.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\nfzn.dll,#1
2⤵
PID:952

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/952-54-0x0000000000000000-mapping.dmp

Download
memory/952-55-0x0000000075F21000-0x0000000075F23000-memory.dmp

Filesize
8KB

Download
memory/952-56-0x0000000041700000-0x00000000417A6000-memory.dmp

Filesize
664KB

Download