8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

Analysis

max time kernel
47s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
17-06-2023 02:56

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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

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

mstsca.exe

pid process

1872 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

2044 schtasks.exe
520 schtasks.exe

pid	process
1872	mstsca.exe

pid	process
2044	schtasks.exe
520	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

build3.exetaskeng.exemstsca.exe

description	pid	process	target process
PID 1704 wrote to memory of 2044	1704	build3.exe	schtasks.exe
PID 1704 wrote to memory of 2044	1704	build3.exe	schtasks.exe
PID 1704 wrote to memory of 2044	1704	build3.exe	schtasks.exe
PID 1704 wrote to memory of 2044	1704	build3.exe	schtasks.exe
PID 1236 wrote to memory of 1872	1236	taskeng.exe	mstsca.exe
PID 1236 wrote to memory of 1872	1236	taskeng.exe	mstsca.exe
PID 1236 wrote to memory of 1872	1236	taskeng.exe	mstsca.exe
PID 1236 wrote to memory of 1872	1236	taskeng.exe	mstsca.exe
PID 1872 wrote to memory of 520	1872	mstsca.exe	schtasks.exe
PID 1872 wrote to memory of 520	1872	mstsca.exe	schtasks.exe
PID 1872 wrote to memory of 520	1872	mstsca.exe	schtasks.exe
PID 1872 wrote to memory of 520	1872	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:1704

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:2044

C:\Windows\system32\taskeng.exe
taskeng.exe {97DBE534-75D3-4251-9FC8-B57407282D04} S-1-5-21-3948302646-268491222-1934009652-1000:KXZDHPUW\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1236

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1872

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"
3⤵
- Creates scheduled task(s)
PID:520

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads