a9cd3d966d453afd424d9ac54df414b80073bb51d249f4089185976fb316e254

Resubmissions

31-03-2023 14:59

230331-scyprscb61 7

Analysis

max time kernel
43s
max time network
85s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
31-03-2023 14:59

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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

Processes:

MEMZ.exeMEMZ.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	MEMZ.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	MEMZ.exe

Executes dropped EXE 7 IoCs

Processes:

MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exe

pid process

1396 MEMZ.exe
4192 MEMZ.exe
4964 MEMZ.exe
1816 MEMZ.exe
3312 MEMZ.exe
444 MEMZ.exe
3304 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
T1067

Processes:

MEMZ.exe

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). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1396	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe
1816	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
3304	MEMZ.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exe

pid	process
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
1816	MEMZ.exe
3312	MEMZ.exe
1816	MEMZ.exe
3312	MEMZ.exe
4964	MEMZ.exe
4964	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
1816	MEMZ.exe
1816	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe
4964	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
1816	MEMZ.exe
1816	MEMZ.exe
4964	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe
4192	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
1816	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
1816	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exe

description	pid	process
Token: SeShutdownPrivilege	4192	MEMZ.exe
Token: SeShutdownPrivilege	3312	MEMZ.exe
Token: SeShutdownPrivilege	444	MEMZ.exe
Token: SeShutdownPrivilege	4964	MEMZ.exe
Token: SeShutdownPrivilege	1816	MEMZ.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

cscript.exe

pid process

2904 cscript.exe

pid	process
2904	cscript.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exe

pid	process
3304	MEMZ.exe
3312	MEMZ.exe
1816	MEMZ.exe
4964	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
1816	MEMZ.exe
4964	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
1816	MEMZ.exe
1816	MEMZ.exe
1816	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4964	MEMZ.exe
4964	MEMZ.exe
4964	MEMZ.exe
4964	MEMZ.exe
1816	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
3312	MEMZ.exe
1816	MEMZ.exe
4964	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
1816	MEMZ.exe
4964	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
4964	MEMZ.exe
1816	MEMZ.exe
4192	MEMZ.exe
3312	MEMZ.exe
444	MEMZ.exe
3312	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
4192	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe
444	MEMZ.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

cmd.exeMEMZ.exeMEMZ.exe

description	pid	process	target process
PID 4764 wrote to memory of 2904	4764	cmd.exe	cscript.exe
PID 4764 wrote to memory of 2904	4764	cmd.exe	cscript.exe
PID 4764 wrote to memory of 1396	4764	cmd.exe	MEMZ.exe
PID 4764 wrote to memory of 1396	4764	cmd.exe	MEMZ.exe
PID 4764 wrote to memory of 1396	4764	cmd.exe	MEMZ.exe
PID 1396 wrote to memory of 4192	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 4192	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 4192	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 4964	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 4964	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 4964	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 1816	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 1816	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 1816	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3312	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3312	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3312	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 444	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 444	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 444	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3304	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3304	1396	MEMZ.exe	MEMZ.exe
PID 1396 wrote to memory of 3304	1396	MEMZ.exe	MEMZ.exe
PID 3304 wrote to memory of 2268	3304	MEMZ.exe	notepad.exe
PID 3304 wrote to memory of 2268	3304	MEMZ.exe	notepad.exe
PID 3304 wrote to memory of 2268	3304	MEMZ.exe	notepad.exe

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:4764

C:\Windows\system32\cscript.exe
cscript x.js
2⤵
- Suspicious use of FindShellTrayWindow
PID:2904

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:1396

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4192

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4964

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1816

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3312

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:444

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:3304

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\System32\notepad.exe" \note.txt
4⤵
PID:2268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x
Filesize
4KB

MD5
b6873c6cbfc8482c7f0e2dcb77fb7f12

SHA1
844b14037e1f90973a04593785dc88dfca517673

SHA256
0a0cad82d9284ccc3c07de323b76ee2d1c0b328bd2ce59073ed5ac4eb7609bd1

SHA512
f3aa3d46d970db574113f40f489ff8a5f041606e79c4ab02301b283c66ff05732be4c5edc1cf4a851da9fbaaa2f296b97fc1135210966a0e2dfc3763398dfcaf

Download Submit
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.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\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:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
12KB

MD5
a7bcf7ea8e9f3f36ebfb85b823e39d91

SHA1
761168201520c199dba68add3a607922d8d4a86e

SHA256
3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

SHA512
89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

Download Submit