19d2bc696df6e60ee30ab2e3419d5eeee3695cdd4376014fc240559add980e8d

Analysis

max time kernel
147s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 05:37

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General

Target

0889ab88e6600b68fb0d680463a0a1ff.exe
Size

64KB
MD5

0889ab88e6600b68fb0d680463a0a1ff
SHA1

18e93778d334e01fdace10ab1dd41793c1b8c761
SHA256

19d2bc696df6e60ee30ab2e3419d5eeee3695cdd4376014fc240559add980e8d
SHA512

fbf0fd825646775b6277e3af16ea1814e47d9f325a36cc6ea00fda2ed75191fc178b7f6dcf372a8bc79ba6ee68172ca337943e1c14bad9faa0614184dd6b61aa
SSDEEP

768:EF5RLFVAdTg3f5wLxBznaXS4dJXyOs3zM2tRbUcAsYFLAglRuhjcL:EF5ZLAdTk5wPaXS4DsjZbUfJlMhjU

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	smss.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	smss.exe

Executes dropped EXE 1 IoCs

pid	Process
2708	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
2996	0889ab88e6600b68fb0d680463a0a1ff.exe
2996	0889ab88e6600b68fb0d680463a0a1ff.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Windows\\Fonts\\smss.exe"	smss.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\smss.exe	0889ab88e6600b68fb0d680463a0a1ff.exe
File opened for modification	C:\Windows\Fonts\smss.exe	0889ab88e6600b68fb0d680463a0a1ff.exe
File opened for modification	C:\Windows\Fonts\Admin271223.irra	smss.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2996	0889ab88e6600b68fb0d680463a0a1ff.exe
2708	smss.exe
2708	smss.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2708	2996	0889ab88e6600b68fb0d680463a0a1ff.exe	25
PID 2996 wrote to memory of 2708	2996	0889ab88e6600b68fb0d680463a0a1ff.exe	25
PID 2996 wrote to memory of 2708	2996	0889ab88e6600b68fb0d680463a0a1ff.exe	25
PID 2996 wrote to memory of 2708	2996	0889ab88e6600b68fb0d680463a0a1ff.exe	25

C:\Users\Admin\AppData\Local\Temp\0889ab88e6600b68fb0d680463a0a1ff.exe
"C:\Users\Admin\AppData\Local\Temp\0889ab88e6600b68fb0d680463a0a1ff.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\Fonts\smss.exe
  "C:\Windows\Fonts\smss.exe"
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:2708

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2708-17-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2996-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2996-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2996-13-0x0000000001E30000-0x0000000001E40000-memory.dmp

Filesize
64KB

Download
memory/2996-11-0x0000000001E30000-0x0000000001E40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads