da83f979eb4d3afdf93ff4c8da3ced02737e3faa452451392654ee97f1b3be13

Analysis

max time kernel
142s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 14:23

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General

Target

1b4f77c6fbe287862b20f05a8d2c791f.exe
Size

4.1MB
MD5

1b4f77c6fbe287862b20f05a8d2c791f
SHA1

ed8f34a9206f23aef91ec61a93e2bb96cc773e22
SHA256

da83f979eb4d3afdf93ff4c8da3ced02737e3faa452451392654ee97f1b3be13
SHA512

80411ba660d99b2e1619e60025dd30d9526e5ea3c72adfa64e146b18a2622b035ff6a0f0e5f8bf16a11b066368542118c62f90bb7d5dd8b6a1e6782d3f660e33
SSDEEP

98304:iXMi6MUL4wM8GwRZg7SU3xIoVdE+R0o5K0n4VcRgtB:imLC8fRZg/xIoVdE4EjVggH

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2216	_4CA9.tmpac7d.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-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\n6mp7dwswe80 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1b4f77c6fbe287862b20f05a8d2c791f.exe"	1b4f77c6fbe287862b20f05a8d2c791f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security Monitor = "\"C:\\Users\\Admin\\AppData\\Roaming\\Security Monitor\\Security_Monitor2012.exe\" /STARTUP"	1b4f77c6fbe287862b20f05a8d2c791f.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3948	4724	WerFault.exe	14

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	1b4f77c6fbe287862b20f05a8d2c791f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4724	1b4f77c6fbe287862b20f05a8d2c791f.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 2216	4724	1b4f77c6fbe287862b20f05a8d2c791f.exe	24
PID 4724 wrote to memory of 2216	4724	1b4f77c6fbe287862b20f05a8d2c791f.exe	24
PID 4724 wrote to memory of 2216	4724	1b4f77c6fbe287862b20f05a8d2c791f.exe	24

C:\Users\Admin\AppData\Local\Temp\1b4f77c6fbe287862b20f05a8d2c791f.exe
"C:\Users\Admin\AppData\Local\Temp\1b4f77c6fbe287862b20f05a8d2c791f.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Users\Admin\AppData\Local\Temp\_4CA9.tmpac7d.exe
  "C:\Users\Admin\AppData\Local\Temp\_4CA9.tmpac7d.exe" -p"10:33 PM" -y -o"C:\Users\Admin\AppData\Roaming\Security Monitor"
  2⤵
  - Executes dropped EXE
  PID:2216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4724 -s 860
  2⤵
  - Program crash
  PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4724 -ip 4724
1⤵
PID:3304

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4724-0-0x0000000002D00000-0x00000000030D3000-memory.dmp

Filesize
3.8MB

Download
memory/4724-2-0x0000000000400000-0x0000000000BB5000-memory.dmp

Filesize
7.7MB

Download
memory/4724-1-0x00000000038B0000-0x00000000038B1000-memory.dmp

Filesize
4KB

Download
memory/4724-20-0x0000000000400000-0x0000000000BB5000-memory.dmp

Filesize
7.7MB

Download
memory/4724-21-0x0000000002D00000-0x00000000030D3000-memory.dmp

Filesize
3.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads