21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74f

Analysis

max time kernel
120s
max time network
97s
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 16:58

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General

Target

21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe
Size

47KB
MD5

7a75c8c7e98ba871b43e2e1e69d395d0
SHA1

448e883d60518194e8f5c0ed7a7026d9a20a066a
SHA256

21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74f
SHA512

2784eaa6a0c4ce4e79be9a914be0364730329d23a65fcacc08f49c58d747e110d3f2e61f92bea1420b95a7c7bb5bcd9c1ef403b600be5a826b7553791628bbc1
SSDEEP

768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhr:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYL

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1100	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
1100	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.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	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 1100	3168	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe	82
PID 3168 wrote to memory of 1100	3168	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe	82
PID 3168 wrote to memory of 1100	3168	21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe	82

C:\Users\Admin\AppData\Local\Temp\21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe
"C:\Users\Admin\AppData\Local\Temp\21f87b0119b20706c8fc3d108b65a561b40eaf7fb834f93297e04c048fe1a74fN.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1100

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
48KB

MD5
841358c2bcdfaec56a163ee25ca267a8

SHA1
b22921ffa4c32448a1cf6ab002da6d6acf3409da

SHA256
a0d675153b1f989fe848f05552204ccdaf17b4a04cdab3347735ed0fb6330ae7

SHA512
bc9758c0d181f78a4e24ed31ca1555972aba2d66cf70c3e2a2f83e6581b79bd89d9f45f049baec6840eca23af79330ad82f2de0f11f8305339c2c255ef9955a2

Download Submit
memory/1100-6-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/1100-7-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3168-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3168-5-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads