c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 06:30

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General

Target

c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe
Size

44KB
MD5

a47048df5a6a482fe30be0ccfe33ef40
SHA1

be6a5cf0cf393f191d7ca17ef0b204ac7a0c21fe
SHA256

c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1
SHA512

b76f6865bf8a5cb219c565f59e300bf7bfef5447da7b6b68e77a38f900e20d55cc6a9ab82ed14d5210f47d170df060056e297fb16c9c453d20e22a38ef3ff15d
SSDEEP

768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhr:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYL

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2788	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2788	2684	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe	30
PID 2684 wrote to memory of 2788	2684	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe	30
PID 2684 wrote to memory of 2788	2684	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe	30
PID 2684 wrote to memory of 2788	2684	c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe	30

C:\Users\Admin\AppData\Local\Temp\c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe
"C:\Users\Admin\AppData\Local\Temp\c39d73d1aa41183888afce7eb49369b4ab445b6a6b8464732a495faa1680c0b1N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  PID:2788

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
45KB

MD5
0a0273b34cc7238c6f99d8592e7e3776

SHA1
94977402c4fdbc96df8991f8a66e3b903ccfd56f

SHA256
6c1f2bec7ad9dcb4117ab3e65ce2ac05fc107e8f8700a23864eb4c10608c248d

SHA512
cd6f4f72e059af0ea2385daaff7b96317847bf58f6ad6e2f917dad418ae6594597bce2142e98782d2b688e3d8cfb9e99c3405265909140df7610ee535e1723a8

Download Submit
memory/2684-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/2684-6-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/2788-9-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads