16fac30777000a16e64573623673640b70003119b3a7e65420e1208e08f30040

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2024, 02:18

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General

Target

66a2d9a797a53dfee20c2ed6819d0627.exe
Size

5.8MB
MD5

66a2d9a797a53dfee20c2ed6819d0627
SHA1

9a445dced06aa1702f2971179990b3ddbfa4f681
SHA256

16fac30777000a16e64573623673640b70003119b3a7e65420e1208e08f30040
SHA512

ca69d30098d567eb7b40247f2688a617fc84e019da6294b245fdfca2e1c3ec0d9229cb6466f10e0239615fefd1c685cc0fbc170f9fc0ef4110ffa51195106235
SSDEEP

49152:vzlnEcO3Cgrb/TbvO90d7HjmAFd4A64nsfJa/pJMBMvDF/4q4auspdkgKKhdvZfj:63CE/Xx4LKhdkZESp

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3176	ChromeUpdateTaskMachinCore.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe	66a2d9a797a53dfee20c2ed6819d0627.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	66a2d9a797a53dfee20c2ed6819d0627.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	66a2d9a797a53dfee20c2ed6819d0627.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	66a2d9a797a53dfee20c2ed6819d0627.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4828	66a2d9a797a53dfee20c2ed6819d0627.exe
4828	66a2d9a797a53dfee20c2ed6819d0627.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 4520	4828	66a2d9a797a53dfee20c2ed6819d0627.exe	81
PID 4828 wrote to memory of 4520	4828	66a2d9a797a53dfee20c2ed6819d0627.exe	81
PID 4828 wrote to memory of 2840	4828	66a2d9a797a53dfee20c2ed6819d0627.exe	83
PID 4828 wrote to memory of 2840	4828	66a2d9a797a53dfee20c2ed6819d0627.exe	83
PID 2840 wrote to memory of 3176	2840	cmd.exe	85
PID 2840 wrote to memory of 3176	2840	cmd.exe	85

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\66a2d9a797a53dfee20c2ed6819d0627.exe
"C:\Users\Admin\AppData\Local\Temp\66a2d9a797a53dfee20c2ed6819d0627.exe"
1⤵
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Windows\system32\schtasks.exe
  C:\Windows\system32\schtasks.exe /CREATE /XML C:\Users\Admin\AppData\Local\Temp\eGIMc /F /TN ChromeUpdateTaskMachinCore
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4520
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c "C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe
    "C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe"
    3⤵
    - Executes dropped EXE
    PID:3176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe

Filesize
5.8MB

MD5
07401a393124e00e35d3014b854eaa8e

SHA1
30606ced9ee070dbade8f2b91ca21d0fb7da45c2

SHA256
a944a1f12474a7fb2dba70bc25d747c6c04a466208be8934dd91307dd4f9d204

SHA512
b9713595ebfb8dbf8ad7c3cb1590f6776d72fbb2b94e4eb1735f7d9bc0f6c818a8a02b9298833550445265085389ebe7901eb0a39635c2333eb989fde25ab772

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C:\Users\Admin\AppData\Local\Temp\eGIMc

Filesize
1KB

MD5
1bf5076d24d2bd9b2cea3d950f844a7a

SHA1
dbb1be5ccc66b7ef0792d35a95a93a1a17b1e636

SHA256
d79f2b872feb31a25f8c922621ef3f1342f800a54cd89acb62b9c72e2b2f1da1

SHA512
7a1ac5dc0eb4262c9a576cc72e311705c1f90771e4814faae033bf7001837cfd5e11387de548d6a1d6b63801153d5836c10a9d2e4eb0c9b382aa5d3aecc1209c

Download Submit