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 9 IoCs

Processes:

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

pid process

2608 mstsca.exe
3148 mstsca.exe
4488 mstsca.exe
2900 mstsca.exe
4916 mstsca.exe
2596 mstsca.exe
2624 mstsca.exe
4496 mstsca.exe
4392 mstsca.exe

pid	process
2608	mstsca.exe
3148	mstsca.exe
4488	mstsca.exe
2900	mstsca.exe
4916	mstsca.exe
2596	mstsca.exe
2624	mstsca.exe
4496	mstsca.exe
4392	mstsca.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

build3.exemstsca.exemstsca.exemstsca.exemstsca.exe

description	pid	process	target process
PID 3340 set thread context of 4088	3340	build3.exe	build3.exe
PID 2608 set thread context of 3148	2608	mstsca.exe	mstsca.exe
PID 4488 set thread context of 2900	4488	mstsca.exe	mstsca.exe
PID 4916 set thread context of 2596	4916	mstsca.exe	mstsca.exe
PID 2624 set thread context of 4496	2624	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

3896 schtasks.exe
3508 schtasks.exe

pid	process
3896	schtasks.exe
3508	schtasks.exe

Suspicious use of WriteProcessMemory 51 IoCs

Processes:

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

description	pid	process	target process
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 3340 wrote to memory of 4088	3340	build3.exe	build3.exe
PID 4088 wrote to memory of 3896	4088	build3.exe	schtasks.exe
PID 4088 wrote to memory of 3896	4088	build3.exe	schtasks.exe
PID 4088 wrote to memory of 3896	4088	build3.exe	schtasks.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 3148	2608	mstsca.exe	mstsca.exe
PID 3148 wrote to memory of 3508	3148	mstsca.exe	schtasks.exe
PID 3148 wrote to memory of 3508	3148	mstsca.exe	schtasks.exe
PID 3148 wrote to memory of 3508	3148	mstsca.exe	schtasks.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4488 wrote to memory of 2900	4488	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 4916 wrote to memory of 2596	4916	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	mstsca.exe	mstsca.exe
PID 2624 wrote to memory of 4496	2624	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:3340
- C:\Users\Admin\AppData\Local\Temp\build3.exe
  "C:\Users\Admin\AppData\Local\Temp\build3.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4088
- - 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:3896

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:2608
- 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:3148
- - 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:3508

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:4488
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2900

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:4916
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:2596

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:2624
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:4496

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
PID:4392

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/2608-17-0x0000000000950000-0x0000000000A50000-memory.dmp

Filesize
1024KB

Download
memory/2624-60-0x000000000083E000-0x000000000084E000-memory.dmp

Filesize
64KB

Download
memory/3340-3-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/3340-4-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/4088-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4088-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4088-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4088-8-0x0000000000410000-0x00000000004D5000-memory.dmp

Filesize
788KB

Download
memory/4488-27-0x0000000000A7E000-0x0000000000A8E000-memory.dmp

Filesize
64KB

Download
memory/4916-40-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads