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

2608 mstsca.exe
2572 mstsca.exe
1896 mstsca.exe
668 mstsca.exe
896 mstsca.exe
2824 mstsca.exe
1100 mstsca.exe
2468 mstsca.exe
1968 mstsca.exe
1632 mstsca.exe

pid	process
2608	mstsca.exe
2572	mstsca.exe
1896	mstsca.exe
668	mstsca.exe
896	mstsca.exe
2824	mstsca.exe
1100	mstsca.exe
2468	mstsca.exe
1968	mstsca.exe
1632	mstsca.exe

Suspicious use of SetThreadContext 6 IoCs

Processes:

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

description	pid	process	target process
PID 2268 set thread context of 2876	2268	build3.exe	build3.exe
PID 2608 set thread context of 2572	2608	mstsca.exe	mstsca.exe
PID 1896 set thread context of 668	1896	mstsca.exe	mstsca.exe
PID 896 set thread context of 2824	896	mstsca.exe	mstsca.exe
PID 1100 set thread context of 2468	1100	mstsca.exe	mstsca.exe
PID 1968 set thread context of 1632	1968	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

2640 schtasks.exe
2108 schtasks.exe

pid	process
2640	schtasks.exe
2108	schtasks.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

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

description	pid	process	target process
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2268 wrote to memory of 2876	2268	build3.exe	build3.exe
PID 2876 wrote to memory of 2108	2876	build3.exe	schtasks.exe
PID 2876 wrote to memory of 2108	2876	build3.exe	schtasks.exe
PID 2876 wrote to memory of 2108	2876	build3.exe	schtasks.exe
PID 2876 wrote to memory of 2108	2876	build3.exe	schtasks.exe
PID 2860 wrote to memory of 2608	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 2608	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 2608	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 2608	2860	taskeng.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2608 wrote to memory of 2572	2608	mstsca.exe	mstsca.exe
PID 2572 wrote to memory of 2640	2572	mstsca.exe	schtasks.exe
PID 2572 wrote to memory of 2640	2572	mstsca.exe	schtasks.exe
PID 2572 wrote to memory of 2640	2572	mstsca.exe	schtasks.exe
PID 2572 wrote to memory of 2640	2572	mstsca.exe	schtasks.exe
PID 2860 wrote to memory of 1896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1896	2860	taskeng.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 1896 wrote to memory of 668	1896	mstsca.exe	mstsca.exe
PID 2860 wrote to memory of 896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 896	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 896	2860	taskeng.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 896 wrote to memory of 2824	896	mstsca.exe	mstsca.exe
PID 2860 wrote to memory of 1100	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1100	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1100	2860	taskeng.exe	mstsca.exe
PID 2860 wrote to memory of 1100	2860	taskeng.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:2268
- C:\Users\Admin\AppData\Local\Temp\build3.exe
  "C:\Users\Admin\AppData\Local\Temp\build3.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2876
- - 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:2108

C:\Windows\system32\taskeng.exe
taskeng.exe {CE5391BF-D857-47D4-998D-A28DD1D155D1} S-1-5-21-928733405-3780110381-2966456290-1000:VTILVGXH\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2860
- 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 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
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - 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"
      4⤵
      Creates scheduled task(s)
      PID:2640
- 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 SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    3⤵
    - Executes dropped EXE
    PID:668
- 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 SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:896
- - C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    3⤵
    - Executes dropped EXE
    PID:2824
- 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 SetThreadContext
  PID:1100
- - C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    3⤵
    - Executes dropped EXE
    PID:2468
- 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 SetThreadContext
  PID:1968
- - C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    3⤵
    - Executes dropped EXE
    PID:1632

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/896-48-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/1100-61-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/1896-29-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download
memory/1968-78-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/2268-2-0x0000000000C30000-0x0000000000D30000-memory.dmp

Filesize
1024KB

Download
memory/2268-4-0x0000000000220000-0x0000000000224000-memory.dmp

Filesize
16KB

Download
memory/2608-14-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/2876-5-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2876-7-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2876-8-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads