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
1068	mstsca.exe
2648	mstsca.exe
4448	mstsca.exe
1688	mstsca.exe
4456	mstsca.exe
3836	mstsca.exe
1768	mstsca.exe
1924	mstsca.exe
3796	mstsca.exe
3308	mstsca.exe

Suspicious use of SetThreadContext 6 IoCs

Processes:

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

description	pid	process	target process
PID 4804 set thread context of 3096	4804	build3.exe	build3.exe
PID 1068 set thread context of 2648	1068	mstsca.exe	mstsca.exe
PID 4448 set thread context of 1688	4448	mstsca.exe	mstsca.exe
PID 4456 set thread context of 3836	4456	mstsca.exe	mstsca.exe
PID 1768 set thread context of 1924	1768	mstsca.exe	mstsca.exe
PID 3796 set thread context of 3308	3796	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

1948 schtasks.exe
4044 schtasks.exe

pid	process
1948	schtasks.exe
4044	schtasks.exe

Suspicious use of WriteProcessMemory 60 IoCs

Processes:

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

description	pid	process	target process
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 4804 wrote to memory of 3096	4804	build3.exe	build3.exe
PID 3096 wrote to memory of 1948	3096	build3.exe	schtasks.exe
PID 3096 wrote to memory of 1948	3096	build3.exe	schtasks.exe
PID 3096 wrote to memory of 1948	3096	build3.exe	schtasks.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 1068 wrote to memory of 2648	1068	mstsca.exe	mstsca.exe
PID 2648 wrote to memory of 4044	2648	mstsca.exe	schtasks.exe
PID 2648 wrote to memory of 4044	2648	mstsca.exe	schtasks.exe
PID 2648 wrote to memory of 4044	2648	mstsca.exe	schtasks.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4448 wrote to memory of 1688	4448	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 4456 wrote to memory of 3836	4456	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 1768 wrote to memory of 1924	1768	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	mstsca.exe	mstsca.exe
PID 3796 wrote to memory of 3308	3796	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:4804
- C:\Users\Admin\AppData\Local\Temp\build3.exe
  "C:\Users\Admin\AppData\Local\Temp\build3.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3096
- - 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:1948

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:1068
- 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:2648
- - 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:4044

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:4448
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:1688

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:4456
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3836

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:1768
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:1924

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:3796
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3308

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/1068-15-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/1768-57-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/3096-9-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3096-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3096-8-0x0000000000410000-0x0000000000413000-memory.dmp

Filesize
12KB

Download
memory/3096-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3096-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3796-72-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/4448-32-0x0000000000B30000-0x0000000000C30000-memory.dmp

Filesize
1024KB

Download
memory/4448-35-0x0000000000B30000-0x0000000000C30000-memory.dmp

Filesize
1024KB

Download
memory/4456-42-0x00000000009A0000-0x0000000000AA0000-memory.dmp

Filesize
1024KB

Download
memory/4804-1-0x0000000000B40000-0x0000000000C40000-memory.dmp

Filesize
1024KB

Download
memory/4804-2-0x0000000000B10000-0x0000000000B14000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads