4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a

Analysis

max time kernel
149s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/11/2024, 22:10

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General

Target
4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe
Size 27KB
Sample241109-13fkwasmhz
SHA256 4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a
MD5 f571bafa285b2505e1946ec845e8365c
SHA1 832635b8f68ce349ac47e63ba38ac2141a45358a
SHA512 713b4cf7c14245d24f94a1d513051c1a91ce874b4366a64b31d0a09cde0b7b2e9fe3ddb38f6f3e372324e613e04a5553a3c326ebe5994290012d792241de00b0
SSDEEP 768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wk7IEhGOrlDth7h/IbjfhP6giwzhth3:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wky
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1872	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
1872	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.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	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 1872	3916	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe	83
PID 3916 wrote to memory of 1872	3916	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe	83
PID 3916 wrote to memory of 1872	3916	4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe	83

C:\Users\Admin\AppData\Local\Temp\4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe
"C:\Users\Admin\AppData\Local\Temp\4f2c1f687591636647cebc2531383519cdcb261d755112c216d4bf31e1e66a3a.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1872

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

microsofthelp.exe

Path C:\Windows\microsofthelp.exe
Size 28KB
SHA256 a062e0300c9a5a1d81a3f9c22cfc38fd1ec76cfa09d04c660ba8d0e633b389c5
MD5 41f1c6dfeb3b6749e79e2c51feb9df52
SHA1 70ddf0ece6ceeadabe4a22dc8b4cb492f532cc0f
SHA512 9223d6ff11a2cb03010d5b10c294551e3f16a253c699e0b763f30c347aaf2916dad267e434ab6b4e8e42a58c0fb39e0c1d9de9fd66eac5c407fbe3978a571bb8
SSDEEP 768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wk7IEhGOrlDth7h/IbjfhP6giwzhthx:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wk0
MD5 SHA1 SHA512 SSDEEP

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memory/1872-6-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/3916-0-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/3916-5-0x0000000000400000-0x0000000000403000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads