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 20 IoCs

Processes:

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

pid	process
4048	mstsca.exe
4356	mstsca.exe
4128	mstsca.exe
2872	mstsca.exe
4808	mstsca.exe
3456	mstsca.exe
5052	mstsca.exe
2516	mstsca.exe
1688	mstsca.exe
4464	mstsca.exe
4824	mstsca.exe
4468	mstsca.exe
1276	mstsca.exe
3644	mstsca.exe
2500	mstsca.exe
4868	mstsca.exe
3332	mstsca.exe
4164	mstsca.exe
2564	mstsca.exe
3228	mstsca.exe

Suspicious use of SetThreadContext 11 IoCs

Processes:

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

description	pid	process	target process
PID 2024 set thread context of 3044	2024	build3.exe	build3.exe
PID 4048 set thread context of 4356	4048	mstsca.exe	mstsca.exe
PID 4128 set thread context of 2872	4128	mstsca.exe	mstsca.exe
PID 4808 set thread context of 3456	4808	mstsca.exe	mstsca.exe
PID 5052 set thread context of 2516	5052	mstsca.exe	mstsca.exe
PID 1688 set thread context of 4464	1688	mstsca.exe	mstsca.exe
PID 4824 set thread context of 4468	4824	mstsca.exe	mstsca.exe
PID 1276 set thread context of 3644	1276	mstsca.exe	mstsca.exe
PID 2500 set thread context of 4868	2500	mstsca.exe	mstsca.exe
PID 3332 set thread context of 4164	3332	mstsca.exe	mstsca.exe
PID 2564 set thread context of 3228	2564	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

4072 schtasks.exe
320 schtasks.exe

pid	process
4072	schtasks.exe
320	schtasks.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

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

description	pid	process	target process
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 2024 wrote to memory of 3044	2024	build3.exe	build3.exe
PID 3044 wrote to memory of 320	3044	build3.exe	schtasks.exe
PID 3044 wrote to memory of 320	3044	build3.exe	schtasks.exe
PID 3044 wrote to memory of 320	3044	build3.exe	schtasks.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4048 wrote to memory of 4356	4048	mstsca.exe	mstsca.exe
PID 4356 wrote to memory of 4072	4356	mstsca.exe	schtasks.exe
PID 4356 wrote to memory of 4072	4356	mstsca.exe	schtasks.exe
PID 4356 wrote to memory of 4072	4356	mstsca.exe	schtasks.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4128 wrote to memory of 2872	4128	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 4808 wrote to memory of 3456	4808	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 5052 wrote to memory of 2516	5052	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 1688 wrote to memory of 4464	1688	mstsca.exe	mstsca.exe
PID 4824 wrote to memory of 4468	4824	mstsca.exe	mstsca.exe
PID 4824 wrote to memory of 4468	4824	mstsca.exe	mstsca.exe
PID 4824 wrote to memory of 4468	4824	mstsca.exe	mstsca.exe
PID 4824 wrote to memory of 4468	4824	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:2024
- C:\Users\Admin\AppData\Local\Temp\build3.exe
  "C:\Users\Admin\AppData\Local\Temp\build3.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3044
- - 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:320

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:4048
- 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:4356
- - 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:4072

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:4128
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2872

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:4808
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3456

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:5052
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2516

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:1688
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4464

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:4824
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4468

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:1276
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3644

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:2500
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4868

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:3332
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4164

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:2564
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3228

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/1276-100-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/1688-70-0x0000000000940000-0x0000000000A40000-memory.dmp

Filesize
1024KB

Download
memory/2024-2-0x0000000002530000-0x0000000002534000-memory.dmp

Filesize
16KB

Download
memory/2024-1-0x0000000000960000-0x0000000000A60000-memory.dmp

Filesize
1024KB

Download
memory/2500-115-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/2564-145-0x0000000000B30000-0x0000000000C30000-memory.dmp

Filesize
1024KB

Download
memory/3044-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3044-9-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3044-8-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3044-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3044-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3332-130-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

Filesize
1024KB

Download
memory/4048-13-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/4128-25-0x00000000008D0000-0x00000000009D0000-memory.dmp

Filesize
1024KB

Download
memory/4808-40-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/4824-87-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/5052-57-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads