dfa5a7dc2c09518b7142489e3277dcb41346d39fe18d8091370ebdcd5fef2f8c

Analysis

max time kernel
119s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2024, 20:08

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General

Target

b4b62919ff25c23bf6a798cc13b4bd20N.exe
Size

47KB
MD5

b4b62919ff25c23bf6a798cc13b4bd20
SHA1

660b26b8d76ac131f5d06e73d131808aa9defa8f
SHA256

dfa5a7dc2c09518b7142489e3277dcb41346d39fe18d8091370ebdcd5fef2f8c
SHA512

84c1b644fce0581aa7a26316cfb066cf7fda9dd5cfc460fef253f431eda8bd7dd7fddcbbb3636c4230d8ce3f2945663d435408815e65fd8420bf172d2a38bd32
SSDEEP

768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhd:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wY9

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3196	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3196	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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b4b62919ff25c23bf6a798cc13b4bd20N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	b4b62919ff25c23bf6a798cc13b4bd20N.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	b4b62919ff25c23bf6a798cc13b4bd20N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 3196	5096	b4b62919ff25c23bf6a798cc13b4bd20N.exe	83
PID 5096 wrote to memory of 3196	5096	b4b62919ff25c23bf6a798cc13b4bd20N.exe	83
PID 5096 wrote to memory of 3196	5096	b4b62919ff25c23bf6a798cc13b4bd20N.exe	83

C:\Users\Admin\AppData\Local\Temp\b4b62919ff25c23bf6a798cc13b4bd20N.exe
"C:\Users\Admin\AppData\Local\Temp\b4b62919ff25c23bf6a798cc13b4bd20N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3196

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
47KB

MD5
14b9fa5f7ecb6c2a5dd29b7d26f7a586

SHA1
2609c56a1099c98f9ab5582af3c48b9ac3af491b

SHA256
e07fbb6fe40e146771d840ec13361db8368598989e0897d08331d162ab25ea9e

SHA512
94cd81a0a4ec460a162b4fa9e47d34747e2c8c15321372036b4c2828a8a29fa8e33cbf75cf55896fd01c476868ca7f5aab9a20680a0c30fb000ec60183e3aeea

Download Submit
memory/3196-6-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/5096-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/5096-4-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads