39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2022, 00:10

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General

Target

39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe
Size

78KB
MD5

945003bafa2e3c6d008df685e9820d36
SHA1

583f4e1455e6d64eb273f90e2ed3c92f355319c2
SHA256

39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96
SHA512

e9c47d4fbcb6076e0869d2965f6d594ba4c6db6069262bd7d8beb74fa929bd705ae58647219e69b1afe57e152ddab0ee1f40dff1e7f85a9003da12fcd0fa9247
SSDEEP

768:Q//QAtksRzwFys/n/L/n/Iy9y+fCn9wDVLrIzepPTeJttsud0MFtg4szKjugeanz:Q34I8/jfK+qOVnIYPyuMo4OaKYLFr

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4920	dwm.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
528	netsh.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9c67cd1d587548c4935cdea93d6e94fd.exe	dwm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9c67cd1d587548c4935cdea93d6e94fd.exe	dwm.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9c67cd1d587548c4935cdea93d6e94fd = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dwm.exe\" .."	dwm.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9c67cd1d587548c4935cdea93d6e94fd = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dwm.exe\" .."	dwm.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 25 IoCs

pid	Process
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe
4920	dwm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	dwm.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 4920	4972	39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe	81
PID 4972 wrote to memory of 4920	4972	39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe	81
PID 4972 wrote to memory of 4920	4972	39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe	81
PID 4920 wrote to memory of 528	4920	dwm.exe	82
PID 4920 wrote to memory of 528	4920	dwm.exe	82
PID 4920 wrote to memory of 528	4920	dwm.exe	82

C:\Users\Admin\AppData\Local\Temp\39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe
"C:\Users\Admin\AppData\Local\Temp\39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\dwm.exe
  "C:\Users\Admin\AppData\Local\Temp\dwm.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dwm.exe" "dwm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:528

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\dwm.exe

Filesize
78KB

MD5
945003bafa2e3c6d008df685e9820d36

SHA1
583f4e1455e6d64eb273f90e2ed3c92f355319c2

SHA256
39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96

SHA512
e9c47d4fbcb6076e0869d2965f6d594ba4c6db6069262bd7d8beb74fa929bd705ae58647219e69b1afe57e152ddab0ee1f40dff1e7f85a9003da12fcd0fa9247

Download Submit
C:\Users\Admin\AppData\Local\Temp\dwm.exe

Filesize
78KB

MD5
945003bafa2e3c6d008df685e9820d36

SHA1
583f4e1455e6d64eb273f90e2ed3c92f355319c2

SHA256
39fe8eac5fd89bf85de2ebb2900ce19ddfea4e2c3ce31311ac7c15d813ef9c96

SHA512
e9c47d4fbcb6076e0869d2965f6d594ba4c6db6069262bd7d8beb74fa929bd705ae58647219e69b1afe57e152ddab0ee1f40dff1e7f85a9003da12fcd0fa9247

Download Submit
memory/4920-137-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/4920-139-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/4972-136-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/4972-138-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download