a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cd

Analysis

max time kernel
119s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 00:14

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General

Target

a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe
Size

81KB
MD5

14fcb95dab52ba8b36a3f66107a3a380
SHA1

d38d8dc61fb790d21434ae913d06af6dc9d4d14f
SHA256

a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cd
SHA512

b34a02ac883b78c5ec8ad62d7e5a9894e623816dcf0e8723c45d981b4327421bd5df4a364beb19bab83fc2b0df1b155b142a24ad06b11fbbc40482b94d4398a3
SSDEEP

1536:86RAo0ej2d6rnJwwvlNlIUBvsI7hrhEh9cpDN/qhAvP3OInvnHvvxIfhqhcGoI/R:xAo1lOwvlNlXBvsI7hrhEh9cpDN/qhAR

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4444	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	microsofthelp.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\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 4444	3984	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe	82
PID 3984 wrote to memory of 4444	3984	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe	82
PID 3984 wrote to memory of 4444	3984	a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe	82

C:\Users\Admin\AppData\Local\Temp\a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe
"C:\Users\Admin\AppData\Local\Temp\a43fc0c478296ee38d2cccfb65691000137009d4c340610a08389a918cf687cdN.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4444

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\microsofthelp.exe

Filesize
81KB

MD5
ed09dfdc65373f56960481f684e079fd

SHA1
fdddb21f2de7f3884fbcfd36bedec16a6c095704

SHA256
f4c5562ae2ebb965dee480899d85ec755ba948a9d2eac10fdebae707d67f4ca7

SHA512
107493b8d5e26490e8f1bcd49b124a7365f563c62eac0326ea4609236d72b54bf61fe702db526a244b722c794cfc0f7e807181335a42d0e2cda844fb38437f54

Download Submit
memory/3984-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3984-3-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4444-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads