fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

General

Target

build3.exe
Size

299KB
MD5

41b883a061c95e9b9cb17d4ca50de770
SHA1

1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad
SHA256

fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408
SHA512

cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319
SSDEEP

6144:2neDcgRQv5VaNT9DW7a6dtM9VstSttuvqIT:2O0v5VuT9DW7hdt9tKt2qI

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 10 IoCs

Processes:

mstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exe

pid	process
5096	mstsca.exe
736	mstsca.exe
4788	mstsca.exe
2788	mstsca.exe
1652	mstsca.exe
3268	mstsca.exe
4712	mstsca.exe
4376	mstsca.exe
3824	mstsca.exe
1584	mstsca.exe

Suspicious use of SetThreadContext 6 IoCs

Processes:

build3.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exe

description	pid	process	target process
PID 628 set thread context of 4604	628	build3.exe	build3.exe
PID 5096 set thread context of 736	5096	mstsca.exe	mstsca.exe
PID 4788 set thread context of 2788	4788	mstsca.exe	mstsca.exe
PID 1652 set thread context of 3268	1652	mstsca.exe	mstsca.exe
PID 4712 set thread context of 4376	4712	mstsca.exe	mstsca.exe
PID 3824 set thread context of 1584	3824	mstsca.exe	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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4016 schtasks.exe
4924 schtasks.exe

pid	process
4016	schtasks.exe
4924	schtasks.exe

Suspicious use of WriteProcessMemory 60 IoCs

Processes:

build3.exebuild3.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exemstsca.exe

description	pid	process	target process
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 628 wrote to memory of 4604	628	build3.exe	build3.exe
PID 4604 wrote to memory of 4924	4604	build3.exe	schtasks.exe
PID 4604 wrote to memory of 4924	4604	build3.exe	schtasks.exe
PID 4604 wrote to memory of 4924	4604	build3.exe	schtasks.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 5096 wrote to memory of 736	5096	mstsca.exe	mstsca.exe
PID 736 wrote to memory of 4016	736	mstsca.exe	schtasks.exe
PID 736 wrote to memory of 4016	736	mstsca.exe	schtasks.exe
PID 736 wrote to memory of 4016	736	mstsca.exe	schtasks.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 4788 wrote to memory of 2788	4788	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 1652 wrote to memory of 3268	1652	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 4712 wrote to memory of 4376	4712	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe
PID 3824 wrote to memory of 1584	3824	mstsca.exe	mstsca.exe

C:\Users\Admin\AppData\Local\Temp\build3.exe
"C:\Users\Admin\AppData\Local\Temp\build3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\build3.exe
  "C:\Users\Admin\AppData\Local\Temp\build3.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4604
- - 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:4924

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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5096
- 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:736
- - 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:4016

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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2788

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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3268

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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4376

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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:1584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

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
299KB

MD5
41b883a061c95e9b9cb17d4ca50de770

SHA1
1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

SHA256
fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

SHA512
cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

Download Submit
memory/628-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

Filesize
1024KB

Download
memory/628-2-0x00000000023F0000-0x00000000023F4000-memory.dmp

Filesize
16KB

Download
memory/1652-50-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/1652-40-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/3824-71-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/4604-9-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4604-8-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4604-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4604-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4604-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4712-56-0x0000000000840000-0x0000000000940000-memory.dmp

Filesize
1024KB

Download
memory/4788-25-0x0000000000940000-0x0000000000A40000-memory.dmp

Filesize
1024KB

Download
memory/5096-16-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads