f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25

Analysis

max time kernel
120s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-10-2024 09:06

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General

Target

f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe
Size

62KB
MD5

0e65b06f6a730e03f75e11619c01b310
SHA1

771763e0070d36e8ee7b1b4819d5bc0184560bfa
SHA256

f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25
SHA512

2ff625a22cd16c49782ee5995a73b9f7801b9cd8ea5ed24c6c660cae4eb99c1493f627aad4c0b562ba7da7de698818f5e5837d3f10686e174b0476cd039955e1
SSDEEP

1536:NAo0Tj2d6rnJwwvl4ulkP6vghzwYu7vih9GueIh9j2IoHAcBHUIF2kvEHrhYhvhv:NAoglOwvl4ulkP6vghzwYu7vih9GueIi

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4344	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.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	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 4344	1076	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe	82
PID 1076 wrote to memory of 4344	1076	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe	82
PID 1076 wrote to memory of 4344	1076	f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe	82

C:\Users\Admin\AppData\Local\Temp\f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe
"C:\Users\Admin\AppData\Local\Temp\f77c576fe8e71fbfc19b7f65dd82c932a7a5898c28293b97e69f63ca17588c25N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1076
- 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:4344

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
63KB

MD5
e8b6ab257a70ea94bc014d75e80cf67b

SHA1
944809027af93c3fb752361fcb2211eafe904088

SHA256
006621e92a6212caa2d90150d37900d941719ba7a0130152b0e412a9cf72818e

SHA512
ad53b5d98c46d6a3571f05f5e92078ef3055fee486993a6df0cfd5d6288529515463fa3d608c9b3441900972beacbbbe6ad74fa499d2dd585e187986eef5e580

Download Submit
memory/1076-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1076-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4344-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads