outsteel | 434d39bfbcee378ed62a02aa40acc6507aa00b2a3cb0bf356c0b23cc9eebcd77

Analysis

max time kernel
122s
max time network
142s
platform
windows7_x64
resource
win7-en-20211208
submitted
28-02-2022 03:16

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General

Target

NewCovid-21/08042021.exe

Score

10^/10

outsteel spyware stealer

Malware Config

Signatures

OutSteel
OutSteel is a file uploader and document stealer written in AutoIT.
stealer outsteel

OutSteel batch script 1 IoCs

Detects batch script dropped by OutSteel

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\NewCovid-21\r.bat	outsteel_batch_script

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

968 cmd.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
968	cmd.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

08042021.exe

description	ioc	process
File opened (read-only)	\??\j:	08042021.exe
File opened (read-only)	\??\n:	08042021.exe
File opened (read-only)	\??\p:	08042021.exe
File opened (read-only)	\??\w:	08042021.exe
File opened (read-only)	\??\x:	08042021.exe
File opened (read-only)	\??\a:	08042021.exe
File opened (read-only)	\??\b:	08042021.exe
File opened (read-only)	\??\g:	08042021.exe
File opened (read-only)	\??\z:	08042021.exe
File opened (read-only)	\??\i:	08042021.exe
File opened (read-only)	\??\k:	08042021.exe
File opened (read-only)	\??\y:	08042021.exe
File opened (read-only)	\??\o:	08042021.exe
File opened (read-only)	\??\r:	08042021.exe
File opened (read-only)	\??\v:	08042021.exe
File opened (read-only)	\??\h:	08042021.exe
File opened (read-only)	\??\l:	08042021.exe
File opened (read-only)	\??\m:	08042021.exe
File opened (read-only)	\??\s:	08042021.exe
File opened (read-only)	\??\t:	08042021.exe
File opened (read-only)	\??\u:	08042021.exe
File opened (read-only)	\??\e:	08042021.exe
File opened (read-only)	\??\f:	08042021.exe
File opened (read-only)	\??\q:	08042021.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral1/memory/1628-57-0x00000000044A0000-0x000000000457D000-memory.dmp	autoit_exe
behavioral1/memory/1628-59-0x0000000000400000-0x00000000004E2000-memory.dmp	autoit_exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

788 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 788 taskkill.exe

pid	process
788	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	788	taskkill.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

08042021.exe

description	pid	process	target process
PID 1628 wrote to memory of 1704	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1704	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1704	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1704	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 544	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 544	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 544	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 544	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1636	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1636	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1636	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1636	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 784	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 784	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 784	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 784	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 956	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 956	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 956	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 956	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 592	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 592	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 592	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 592	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 856	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 856	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 856	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 856	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1768	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1768	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1768	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1768	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1208	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1208	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1208	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1208	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1292	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1292	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1292	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1292	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 912	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 912	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 912	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 912	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1736	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1736	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1736	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1736	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1076	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1076	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1076	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1076	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1744	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1744	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1744	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1744	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1948	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1948	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1948	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 1948	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 2020	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 2020	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 2020	1628	08042021.exe	cmd.exe
PID 1628 wrote to memory of 2020	1628	08042021.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\NewCovid-21\08042021.exe
"C:\Users\Admin\AppData\Local\Temp\NewCovid-21\08042021.exe"
1⤵
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
  2⤵
  PID:1704
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
  2⤵
  PID:544
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
  2⤵
  PID:1636
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
  2⤵
  PID:784
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
  2⤵
  PID:956
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
  2⤵
  PID:592
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
  2⤵
  PID:856
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
  2⤵
  PID:1768
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
  2⤵
  PID:1208
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
  2⤵
  PID:1292
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
  2⤵
  PID:912
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
  2⤵
  PID:1736
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
  2⤵
  PID:1076
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rar" /S /B /A
  2⤵
  PID:1744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.zip" /S /B /A
  2⤵
  PID:1948
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
  2⤵
  PID:2020
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
  2⤵
  PID:1444
- C:\Windows\SysWOW64\cmd.exe
  cmd /c start /min r.bat
  2⤵
  PID:748
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K r.bat
    3⤵
    - Deletes itself
    PID:968
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /min /c del "C:\Users\Admin\AppData\Local\Temp\NewCovid-21\r.bat"
      4⤵
      PID:768
  - - C:\Windows\SysWOW64\taskkill.exe
      Taskkill /IM cmd.exe /F
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:788

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\NewCovid-21\r.bat

MD5
b5ad26e1e63f33007e07116b9af012e2

SHA1
8be4a19bbd66392f3b424aa78ea3fade69ccdef8

SHA256
aa594fbd3204368ef365a67ae4bc6488e77e8d3cd80d1970bd05cd7a0e1eb1f7

SHA512
f14f213f45e87aaa01157edd65e804ec698a9ad41e04afe971474cae6204d63230c57e5d098470af6e2964e9bb3b6cee933157f8057f955b1670431fe49c3b70

Download Submit
memory/1628-55-0x0000000002C9B000-0x0000000002D16000-memory.dmp

Filesize
492KB

Download
memory/1628-56-0x0000000002C9B000-0x0000000002D16000-memory.dmp

Filesize
492KB

Download
memory/1628-57-0x00000000044A0000-0x000000000457D000-memory.dmp

Filesize
884KB

Download
memory/1628-58-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1628-59-0x0000000000400000-0x00000000004E2000-memory.dmp

Filesize
904KB

Download