9caa1cdcd41a24eeea2abd80e356a2f160ff8dd138df0c7494784a6a38fb0054

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11/09/2024, 17:05

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General

Target

21bfb71331b476e357363a791c3c8450N.exe
Size

47KB
MD5

21bfb71331b476e357363a791c3c8450
SHA1

fdb11bbefe70300b6f92477db331fd9a994ed0d4
SHA256

9caa1cdcd41a24eeea2abd80e356a2f160ff8dd138df0c7494784a6a38fb0054
SHA512

23ef4138656db6bfe34430a49b831ee4594b81a6772585d15bcd8b5a87c2749bdfba2137e7f08cbc5c03bfebfaf6bdf4797b5c21c1da4a110ac556af7885fffa
SSDEEP

768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNh2:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYW

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3672	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3672	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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	21bfb71331b476e357363a791c3c8450N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	21bfb71331b476e357363a791c3c8450N.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	21bfb71331b476e357363a791c3c8450N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 3672	3780	21bfb71331b476e357363a791c3c8450N.exe	84
PID 3780 wrote to memory of 3672	3780	21bfb71331b476e357363a791c3c8450N.exe	84
PID 3780 wrote to memory of 3672	3780	21bfb71331b476e357363a791c3c8450N.exe	84

C:\Users\Admin\AppData\Local\Temp\21bfb71331b476e357363a791c3c8450N.exe
"C:\Users\Admin\AppData\Local\Temp\21bfb71331b476e357363a791c3c8450N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3672

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
296d048ac8c7a219cb995293adead20c

SHA1
7a6b373e7e9e935448ec34dd419a07e911e228ad

SHA256
89489b616d76a8b3931078ef2830aafa4f810676718302f0a8df326cb00ae0a2

SHA512
9263dea8561c984cb5bbb3e1c7a146a6e9e151f5886466d5bce206ff287c7d4a963bfd935d2e9776a28bab8e87f455e46f8e165d9d3945b1d35cd0902eb49a0e

Download Submit
memory/3672-6-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3780-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3780-4-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads