1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a

Analysis

max time kernel
119s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2024, 12:01

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General

Target

1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe
Size

67KB
MD5

732f63bfcb91aa05c03c4f740dc564c4
SHA1

99200976a1aa972ebe5ccc29554c0cc10be6a7e4
SHA256

1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a
SHA512

c606973be9db3b463ff03c2cc113ea137be24d99fb3624ac839232368b38f790ddd4dd8688780bce8acc14f57ef0832a88f0ffa2c23c69257e191df7afd6b634
SSDEEP

1536:NAo0Tj2d6rnJwwvl4ulkP6v8tvGE9UHrSdghj8bvHRIkhbUIchUh80mhDoOho8HO:NAoglOwvl4ulkP6v8tvGE9UHrSdghj8X

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4364	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4364	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.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	microsofthelp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4364	4928	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe	83
PID 4928 wrote to memory of 4364	4928	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe	83
PID 4928 wrote to memory of 4364	4928	1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe	83

C:\Users\Admin\AppData\Local\Temp\1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe
"C:\Users\Admin\AppData\Local\Temp\1771b3424d1ba2c476868d9351a7e88d8007e8774c559ab8132f19588e39788a.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4928
- 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:4364

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
67KB

MD5
a84a74ae42efbad200829ed27f6b1eca

SHA1
751a04de074443f90da7915b134fc53bc2c48209

SHA256
1af9e371df826cc53cb94f7e1d5b9fcc78df1d38ae8a38ba4b143ff719320686

SHA512
a19550e7491d7d7d84a4aabcc4b5f19a838cef959b05e782ef1ff054b0ad5b204247c8fe5f06855725f8647bc3bae73d85d3d0f7f962945b366a82136fd93f1f

Download Submit
memory/4364-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4364-7-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4928-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4928-5-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads