4b30f308a5f0cf34361f5a53f2d73c523188adbbd9ac264275946197a3a8aa28

Resubmissions

03-03-2024 13:51

240303-q5vgpscb85 10

03-03-2024 13:45

240303-q2r76sbd9y 10

Analysis

max time kernel
7s
max time network
9s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03-03-2024 13:45

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General

Target

MEMZ 3.0/MEMZ.bat
Size

12KB
MD5

13a43c26bb98449fd82d2a552877013a
SHA1

71eb7dc393ac1f204488e11f5c1eef56f1e746af
SHA256

5f52365accb76d679b2b3946870439a62eb8936b9a0595f0fb0198138106b513
SHA512

602518b238d80010fa88c2c88699f70645513963ef4f148a0345675738cf9b0c23b9aeb899d9f7830cc1e5c7e9c7147b2dc4a9222770b4a052ee0c879062cd5a
SSDEEP

384:nnLhRNiqt0kCH2LR0GPXxGiZgCz+KG/yKhLdW79HOli+lz3:nLhRN9t0SR4iZtzlREBWhuF

Score

7^/10

bootkit persistence

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	MEMZ.exe
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	MEMZ.exe

Executes dropped EXE 7 IoCs

pid	Process
4156	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
3336	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
1092	MEMZ.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	MEMZ.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
4880	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
4488	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
3336	MEMZ.exe
3336	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
4488	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
4488	MEMZ.exe
3336	MEMZ.exe
3336	MEMZ.exe
2160	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
3336	MEMZ.exe
3336	MEMZ.exe
4488	MEMZ.exe
4488	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4168	MEMZ.exe
4168	MEMZ.exe
4168	MEMZ.exe
4168	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
3336	MEMZ.exe
2160	MEMZ.exe
3336	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
2160	MEMZ.exe
3336	MEMZ.exe
3336	MEMZ.exe
4880	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
4488	MEMZ.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
648	cscript.exe

Suspicious use of SetWindowsHookEx 21 IoCs

pid	Process
1092	MEMZ.exe
4168	MEMZ.exe
3336	MEMZ.exe
4880	MEMZ.exe
4488	MEMZ.exe
2160	MEMZ.exe
4880	MEMZ.exe
3336	MEMZ.exe
4168	MEMZ.exe
2160	MEMZ.exe
4488	MEMZ.exe
4168	MEMZ.exe
4880	MEMZ.exe
3336	MEMZ.exe
4488	MEMZ.exe
2160	MEMZ.exe
4168	MEMZ.exe
4880	MEMZ.exe
3336	MEMZ.exe
2160	MEMZ.exe
4488	MEMZ.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 648	4216	cmd.exe	87
PID 4216 wrote to memory of 648	4216	cmd.exe	87
PID 4216 wrote to memory of 4156	4216	cmd.exe	90
PID 4216 wrote to memory of 4156	4216	cmd.exe	90
PID 4216 wrote to memory of 4156	4216	cmd.exe	90
PID 4156 wrote to memory of 4880	4156	MEMZ.exe	93
PID 4156 wrote to memory of 4880	4156	MEMZ.exe	93
PID 4156 wrote to memory of 4880	4156	MEMZ.exe	93
PID 4156 wrote to memory of 4488	4156	MEMZ.exe	94
PID 4156 wrote to memory of 4488	4156	MEMZ.exe	94
PID 4156 wrote to memory of 4488	4156	MEMZ.exe	94
PID 4156 wrote to memory of 3336	4156	MEMZ.exe	95
PID 4156 wrote to memory of 3336	4156	MEMZ.exe	95
PID 4156 wrote to memory of 3336	4156	MEMZ.exe	95
PID 4156 wrote to memory of 4168	4156	MEMZ.exe	97
PID 4156 wrote to memory of 4168	4156	MEMZ.exe	97
PID 4156 wrote to memory of 4168	4156	MEMZ.exe	97
PID 4156 wrote to memory of 2160	4156	MEMZ.exe	98
PID 4156 wrote to memory of 2160	4156	MEMZ.exe	98
PID 4156 wrote to memory of 2160	4156	MEMZ.exe	98
PID 4156 wrote to memory of 1092	4156	MEMZ.exe	99
PID 4156 wrote to memory of 1092	4156	MEMZ.exe	99
PID 4156 wrote to memory of 1092	4156	MEMZ.exe	99
PID 1092 wrote to memory of 3332	1092	MEMZ.exe	101
PID 1092 wrote to memory of 3332	1092	MEMZ.exe	101
PID 1092 wrote to memory of 3332	1092	MEMZ.exe	101

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Windows\system32\cscript.exe
  cscript x.js
  2⤵
  - Suspicious use of FindShellTrayWindow
  PID:648
- C:\Users\Admin\AppData\Roaming\MEMZ.exe
  "C:\Users\Admin\AppData\Roaming\MEMZ.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:4880
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:4488
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:3336
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:4168
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:2160
- - C:\Users\Admin\AppData\Roaming\MEMZ.exe
    "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /main
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Writes to the Master Boot Record (MBR)
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1092
  - - C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\System32\notepad.exe" \note.txt
      4⤵
      PID:3332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x

Filesize
10KB

MD5
fc59b7d2eb1edbb9c8cb9eb08115a98e

SHA1
90a6479ce14f8548df54c434c0a524e25efd9d17

SHA256
a05b9be9dd87492f265094146e18d628744c6b09c0e7efaabf228a9f1091a279

SHA512
3392cfc0dbddb37932e76da5a49f4e010a49aaa863c882b85cccab676cd458cfc8f880d8a0e0dc7581175f447e6b0a002da1591ecd14756650bb74996eacd2b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x

Filesize
4KB

MD5
c6e68ff1dc039af122429c3c5418630f

SHA1
771938ab02aaf6714782ea1c70420794848b1d9c

SHA256
b18e0bb23b9b78ca561b9499853ec5be84f67fcb7db5c7e207c6da1b89c17dbb

SHA512
837b8b31d381030b79a1b85449238b8770999dde21dd705aec81a0205cfc40cb2f65fb7877de479bae9ca96c1233a62078332c93db764389bd6f26985b61c9b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x.js

Filesize
448B

MD5
8eec8704d2a7bc80b95b7460c06f4854

SHA1
1b34585c1fa7ec0bd0505478ac9dbb8b8d19f326

SHA256
aa01b8864b43e92077a106ed3d4656a511f3ba1910fba40c78a32ee6a621d596

SHA512
e274b92810e9a30627a65f87448d784967a2fcfbf49858cbe6ccb841f09e0f53fde253ecc1ea0c7de491d8cc56a6cf8c79d1b7c657e72928cfb0479d11035210

Download Submit
C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\z.zip

Filesize
7KB

MD5
cf0c19ef6909e5c1f10c8460ba9299d8

SHA1
875b575c124acfc1a4a21c1e05acb9690e50b880

SHA256
abb834ebd4b7d7f8ddf545976818f41b3cb51d2b895038a56457616d3a2c6776

SHA512
d930a022a373c283f35d103e277487c2034a0b0814913b8f6ec695b45e20528667aa830eeab58e4483d523bd6a755a16a5379095cb137db6c91909a545a19a2f

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe

Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\note.txt

Filesize
218B

MD5
afa6955439b8d516721231029fb9ca1b

SHA1
087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

SHA256
8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

SHA512
5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

Download Submit