8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

Resubmissions

11-10-2022 04:47

221011-feqeysfcgp 8

10-10-2022 17:35

221010-v54slacfe3 8

28-09-2022 16:21

220928-ttpzmagec6 8

Analysis

max time kernel
91s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
10-10-2022 17:35

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General

Target

build3.exe
Size

9KB
MD5

9ead10c08e72ae41921191f8db39bc16
SHA1

abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA256

8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512

aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
SSDEEP

192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

mstsca.exe

pid process

224 mstsca.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

392 schtasks.exe
4924 schtasks.exe

pid	process
224	mstsca.exe

pid	process
392	schtasks.exe
4924	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

build3.exemstsca.exe

description	pid	process	target process
PID 4996 wrote to memory of 392	4996	build3.exe	schtasks.exe
PID 4996 wrote to memory of 392	4996	build3.exe	schtasks.exe
PID 4996 wrote to memory of 392	4996	build3.exe	schtasks.exe
PID 224 wrote to memory of 4924	224	mstsca.exe	schtasks.exe
PID 224 wrote to memory of 4924	224	mstsca.exe	schtasks.exe
PID 224 wrote to memory of 4924	224	mstsca.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\build3.exe
"C:\Users\Admin\AppData\Local\Temp\build3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
  2⤵
  - Creates scheduled task(s)
  PID:392

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
  2⤵
  - Creates scheduled task(s)
  PID:4924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

Download Submit
memory/392-132-0x0000000000000000-mapping.dmp

Download
memory/4924-135-0x0000000000000000-mapping.dmp

Download