c3743a8c944f5c9b17528418bf49b153b978946838f56e5fca0a3f6914bee887

Analysis

max time kernel
52s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/10/2022, 14:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c3743a8c944f5c9b17528418bf49b153b978946838f56e5fca0a3f6914bee887.dll
Size

514KB
MD5

4f3916e7714f2a32402c9d0b328a2c91
SHA1

1dcd85f7364ea06cd595a86e3e9be48995d596e9
SHA256

c3743a8c944f5c9b17528418bf49b153b978946838f56e5fca0a3f6914bee887
SHA512

56d4282d9076cd0d69c52aefba76b6634cb01e270f8275fc972917cfe26ad597a685f2f103a52d33a3e553e4a7552b7d79d42efcf9436882a48d903a647a58c8
SSDEEP

12288:aVlB29Tew4DtTqBIZqk/x31H8bNjh1PGLnLR:MB29KweTzZqO91elh14LR

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
15	384	rundll32.exe
22	384	rundll32.exe
25	384	rundll32.exe
26	384	rundll32.exe
27	384	rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\NvTmRep_CrashReport2_{F2FE1952-0186-36D3-AAHC-B80CA35AH5B6}.job	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
384	rundll32.exe
384	rundll32.exe
384	rundll32.exe
384	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
384	rundll32.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
384	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 384	400	rundll32.exe	82
PID 400 wrote to memory of 384	400	rundll32.exe	82
PID 400 wrote to memory of 384	400	rundll32.exe	82
PID 384 wrote to memory of 444	384	rundll32.exe	89
PID 384 wrote to memory of 444	384	rundll32.exe	89
PID 384 wrote to memory of 444	384	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c3743a8c944f5c9b17528418bf49b153b978946838f56e5fca0a3f6914bee887.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:400
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c3743a8c944f5c9b17528418bf49b153b978946838f56e5fca0a3f6914bee887.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:384
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C nltest /domain_trusts > C:\ProgramData\AF32BC.BTFA
    3⤵
    PID:444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/384-133-0x0000000010000000-0x0000000010050000-memory.dmp

Filesize
320KB

Download