dca8f8ce0a652c81fc9894b102feb8099366a2f0ba64892290c46a2605c2c52b

Analysis

max time kernel
95s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17/03/2023, 21:15

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General

Target

test.bat
Size

63B
MD5

5edcff91edc49be050b96a68f68f95bd
SHA1

b97dde35f636c022b4698172fafa2137d5c9d79f
SHA256

621814b35e92dabd039eeddb511a1325c98bf1330c0fb588f6bff314bfd83e43
SHA512

001906c256cfa9204180dd1332c3289c8bb03f76e4a28407f36dde89c35fb0f791340d6de8b14698271c05832a64d6ebc1c15bef2c382b7dd9b00c1b67b69316

Score

8^/10

persistence

Malware Config

Signatures

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\AppMgmt\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\sample.dll"	reg.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 64 wrote to memory of 460	64	cmd.exe	84
PID 64 wrote to memory of 460	64	cmd.exe	84
PID 460 wrote to memory of 1396	460	rundll32.exe	85
PID 460 wrote to memory of 1396	460	rundll32.exe	85
PID 460 wrote to memory of 1396	460	rundll32.exe	85
PID 1396 wrote to memory of 1704	1396	rundll32.exe	86
PID 1396 wrote to memory of 1704	1396	rundll32.exe	86
PID 1396 wrote to memory of 1704	1396	rundll32.exe	86
PID 1396 wrote to memory of 2332	1396	rundll32.exe	87
PID 1396 wrote to memory of 2332	1396	rundll32.exe	87
PID 1396 wrote to memory of 2332	1396	rundll32.exe	87
PID 2332 wrote to memory of 1368	2332	net.exe	90
PID 2332 wrote to memory of 1368	2332	net.exe	90
PID 2332 wrote to memory of 1368	2332	net.exe	90
PID 1704 wrote to memory of 1688	1704	cmd.exe	91
PID 1704 wrote to memory of 1688	1704	cmd.exe	91
PID 1704 wrote to memory of 1688	1704	cmd.exe	91
PID 1704 wrote to memory of 3676	1704	cmd.exe	92
PID 1704 wrote to memory of 3676	1704	cmd.exe	92
PID 1704 wrote to memory of 3676	1704	cmd.exe	92
PID 1704 wrote to memory of 4332	1704	cmd.exe	93
PID 1704 wrote to memory of 4332	1704	cmd.exe	93
PID 1704 wrote to memory of 4332	1704	cmd.exe	93

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\test.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\system32\rundll32.exe
  rundll32.exe -e C:\Users\Admin\AppData\Local\Temp\sample.dll,#2
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:460
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe -e C:\Users\Admin\AppData\Local\Temp\sample.dll,#2
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:1396
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1704
    - - C:\Windows\SysWOW64\reg.exe
        
        ReG aDd hKEy_LOcAl_MaChiNE\SYsTEm\CuRRenTCoNTRolSeT\SeRViCeS\AppMgmt\pARamEteRs /v ServiceDll /t REG_EXPAND_SZ /d "C:\Users\Admin\AppData\Local\Temp\sample.dll" /f
        5⤵
        Sets DLL path for service in the registry
        
        PID:1688
    - - C:\Windows\SysWOW64\reg.exe
        
        ReG aDd hKEy_LOcAl_MaChiNE\SYsTEm\CuRRenTCoNTRolSeT\SeRViCeS\AppMgmt /v Start /t REG_DWORD /d 2 /f
        5⤵
        
        PID:3676
    - - C:\Windows\SysWOW64\reg.exe
        
        ReG dELete hKEy_LOcAl_MaChiNE\SYsTEm\CuRRenTCoNTRolSeT\SeRViCeS\AppMgmt\pARamEteRs /v ServiceDllUnloadOnStop /f
        5⤵
        
        PID:4332
  - - C:\Windows\SysWOW64\net.exe
      net start AppMgmt
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2332
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 start AppMgmt
        5⤵
        
        PID:1368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp.bat

Filesize
386B

MD5
379a3418df6035e9f53b2da2e5307486

SHA1
f58733daf0d750a9c7735604510dbc5dcd01a3f2

SHA256
ecb73342ded3fd09ea0159c28a1d086143d9fd5d28e80b5644e3cfac360b0470

SHA512
8c2bdc2f1bb8bdeca92e0ee68d8a09252ee05afbdce8843203d2110fb47d2ac9a374bf068190c35b2a838b119886611c99f9e29164333e6dd73deedea7e9f549

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