3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fc

Analysis

max time kernel
120s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/10/2024, 09:02

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General

Target

3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe
Size

50KB
MD5

5c2cedc20af089f5b409eeaf29f12410
SHA1

79233f19ee0d1237761f634279e8fbfd35ab89da
SHA256

3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fc
SHA512

7ba14c069ab230a06bea144678ecc4a515ec1afb77a0ce35fc010c1e2d0e62a6f5873e7469957878d1a8b1162b405916e0ec606355713893b06a800ee20db9d6
SSDEEP

1536:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYVFl2g5u58dO0xXHQEyYfdhNhFO5h3xhIk:+MA6C1VqaqhtgVRNToV7TtRu8rM0wYVe

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3128	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3128	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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.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	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 3128	2936	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe	82
PID 2936 wrote to memory of 3128	2936	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe	82
PID 2936 wrote to memory of 3128	2936	3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe	82

C:\Users\Admin\AppData\Local\Temp\3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe
"C:\Users\Admin\AppData\Local\Temp\3f3c257359b372b3890af11d0e4458387d56ae068683e5467e5845eafdb2e3fcN.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3128

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
50KB

MD5
46ec5b1f815efd716c3468c21418ccdd

SHA1
62aae63f6abcf849ff95d47d158da8fe619b082b

SHA256
a761c5981c93f901284678f3aee404eeedb857be3358c15ae8fc1d35f1878af9

SHA512
12e95b1ba411c4cecc2232fbc03e323a547766dbabf2debfec04259132ed3a2f737c34004b6f4bb76761d4e78ffaa210db5eec2fb2bf03cbaf9568202bfc98ff

Download Submit
memory/2936-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/2936-5-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3128-6-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3128-7-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads