e167373801728d455bbf3243b7c576f2fc05192dc9d5c0b91dc840100da59ad6

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231201-en
resource tags

arch:x64arch:x86image:win10v2004-20231201-enlocale:en-usos:windows10-2004-x64system
submitted
10/12/2023, 18:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Server.exe
Size

43KB
MD5

62e768f23a7ab49b2e263275f1ec3d32
SHA1

79abc6204488b22e4beb5dddab6c84a2c7afc372
SHA256

e167373801728d455bbf3243b7c576f2fc05192dc9d5c0b91dc840100da59ad6
SHA512

9622be1c1efe683372aa0758c0bf41a64494e540b82684b230edda038a2ed5b10c02f4269c86e1f699369dd0440d6a97829a0b16fa1a8365e58d84d848a02e0d
SSDEEP

768:jSXTp8yN83MSaCA/Cr+9WTO2CK58196HsjHvCqvtq1YLsL1/x0NVbK7z/8HCCjP9:0RWfQYklW1p0DHCCrk

Score

8^/10

evasion persistence

Malware Config

Signatures

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2824	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-1-5-21-2192493100-457715857-1189582111-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\42b3f673cf62159e1838e5f9292cb21c.exe	Builder.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\42b3f673cf62159e1838e5f9292cb21c.exe	Builder.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	Builder.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2192493100-457715857-1189582111-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\42b3f673cf62159e1838e5f9292cb21c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Builder.exe\" .."	Builder.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\42b3f673cf62159e1838e5f9292cb21c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Builder.exe\" .."	Builder.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe
3636	Builder.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	Builder.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 3636	1580	Server.exe	90
PID 1580 wrote to memory of 3636	1580	Server.exe	90
PID 1580 wrote to memory of 3636	1580	Server.exe	90
PID 3636 wrote to memory of 2824	3636	Builder.exe	91
PID 3636 wrote to memory of 2824	3636	Builder.exe	91
PID 3636 wrote to memory of 2824	3636	Builder.exe	91

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\AppData\Local\Temp\Builder.exe
  "C:\Users\Admin\AppData\Local\Temp\Builder.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3636
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Builder.exe" "Builder.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
43KB

MD5
62e768f23a7ab49b2e263275f1ec3d32

SHA1
79abc6204488b22e4beb5dddab6c84a2c7afc372

SHA256
e167373801728d455bbf3243b7c576f2fc05192dc9d5c0b91dc840100da59ad6

SHA512
9622be1c1efe683372aa0758c0bf41a64494e540b82684b230edda038a2ed5b10c02f4269c86e1f699369dd0440d6a97829a0b16fa1a8365e58d84d848a02e0d

Download Submit
memory/1580-0-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/1580-1-0x00000000013E0000-0x00000000013F0000-memory.dmp

Filesize
64KB

Download
memory/1580-2-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/1580-12-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/3636-13-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/3636-14-0x0000000001060000-0x0000000001070000-memory.dmp

Filesize
64KB

Download
memory/3636-15-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/3636-18-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/3636-19-0x0000000001060000-0x0000000001070000-memory.dmp

Filesize
64KB

Download