fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

General

Target

mstsca.exe
Size

299KB
MD5

41b883a061c95e9b9cb17d4ca50de770
SHA1

1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad
SHA256

fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408
SHA512

cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319
SSDEEP

6144:2neDcgRQv5VaNT9DW7a6dtM9VstSttuvqIT:2O0v5VuT9DW7hdt9tKt2qI

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 18 IoCs

Processes:

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

pid	process
3164	mstsca.exe
672	mstsca.exe
216	mstsca.exe
4188	mstsca.exe
4516	mstsca.exe
3676	mstsca.exe
4080	mstsca.exe
2820	mstsca.exe
632	mstsca.exe
2328	mstsca.exe
2516	mstsca.exe
2680	mstsca.exe
5032	mstsca.exe
628	mstsca.exe
4616	mstsca.exe
4992	mstsca.exe
3020	mstsca.exe
4496	mstsca.exe

Suspicious use of SetThreadContext 10 IoCs

Processes:

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

description	pid	process	target process
PID 4976 set thread context of 3268	4976	mstsca.exe	mstsca.exe
PID 3164 set thread context of 672	3164	mstsca.exe	mstsca.exe
PID 216 set thread context of 4188	216	mstsca.exe	mstsca.exe
PID 4516 set thread context of 3676	4516	mstsca.exe	mstsca.exe
PID 4080 set thread context of 2820	4080	mstsca.exe	mstsca.exe
PID 632 set thread context of 2328	632	mstsca.exe	mstsca.exe
PID 2516 set thread context of 2680	2516	mstsca.exe	mstsca.exe
PID 5032 set thread context of 628	5032	mstsca.exe	mstsca.exe
PID 4616 set thread context of 4992	4616	mstsca.exe	mstsca.exe
PID 3020 set thread context of 4496	3020	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

552 schtasks.exe
872 schtasks.exe

pid	process
552	schtasks.exe
872	schtasks.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

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

description	pid	process	target process
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 4976 wrote to memory of 3268	4976	mstsca.exe	mstsca.exe
PID 3268 wrote to memory of 552	3268	mstsca.exe	schtasks.exe
PID 3268 wrote to memory of 552	3268	mstsca.exe	schtasks.exe
PID 3268 wrote to memory of 552	3268	mstsca.exe	schtasks.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 3164 wrote to memory of 672	3164	mstsca.exe	mstsca.exe
PID 672 wrote to memory of 872	672	mstsca.exe	schtasks.exe
PID 672 wrote to memory of 872	672	mstsca.exe	schtasks.exe
PID 672 wrote to memory of 872	672	mstsca.exe	schtasks.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 216 wrote to memory of 4188	216	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4516 wrote to memory of 3676	4516	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 4080 wrote to memory of 2820	4080	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 632 wrote to memory of 2328	632	mstsca.exe	mstsca.exe
PID 2516 wrote to memory of 2680	2516	mstsca.exe	mstsca.exe
PID 2516 wrote to memory of 2680	2516	mstsca.exe	mstsca.exe
PID 2516 wrote to memory of 2680	2516	mstsca.exe	mstsca.exe
PID 2516 wrote to memory of 2680	2516	mstsca.exe	mstsca.exe

C:\Users\Admin\AppData\Local\Temp\mstsca.exe
"C:\Users\Admin\AppData\Local\Temp\mstsca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Users\Admin\AppData\Local\Temp\mstsca.exe
  "C:\Users\Admin\AppData\Local\Temp\mstsca.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3268
- - 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:552

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:3164
- 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:672
- - 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:872

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:216
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4188

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:4516
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3676

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:4080
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2820

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:632
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2328

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:2516
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2680

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
PID:5032
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:628

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
PID:4616
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4992

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
PID:3020
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4496

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

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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/216-35-0x0000000002400000-0x0000000002404000-memory.dmp

Filesize
16KB

Download
memory/216-31-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/632-71-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2516-86-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/3020-131-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download
memory/3164-13-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download
memory/3268-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3268-9-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3268-8-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3268-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3268-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4080-56-0x0000000000A40000-0x0000000000B40000-memory.dmp

Filesize
1024KB

Download
memory/4516-41-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download
memory/4616-116-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/4976-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/4976-2-0x00000000009B0000-0x00000000009B4000-memory.dmp

Filesize
16KB

Download
memory/5032-101-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads