d8b47727ea05305ad396977b336c3bfc86ae122cdde01976fa9b0c3a7c2d3f24

Resubmissions

06-04-2023 08:33

230406-kfx9eacc46 7

06-04-2023 08:30

230406-kedtdacc37 7

Analysis

max time kernel
39s
max time network
74s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-04-2023 08:33

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General

Target

memz.bat
Size

13KB
MD5

44fbd58c401a7786da2e8b6a6291379e
SHA1

9dbfd08fa557d9dce79911eb4bbddb2008d4f53f
SHA256

d8b47727ea05305ad396977b336c3bfc86ae122cdde01976fa9b0c3a7c2d3f24
SHA512

c369f749ba3ef4e463524b3483c4250311c2a19414a49dc86c052cac9c9d0a3b05dbdbf71b854ccf6f46abc46e439f9264c7672e22a0c3004b7d679e26a56de3
SSDEEP

192:vOyUySl0UaDz2gWsIzlmj+BxZ3yqueWQx0lZicyC8Sh31xcjBzyxwn7AVhllz3:vVODaDSHMql3yqlxy5L1xcjwrlz3

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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	MEMZ.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	MEMZ.exe

Executes dropped EXE 7 IoCs

Processes:

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

pid process

3724 MEMZ.exe
4400 MEMZ.exe
3384 MEMZ.exe
3660 MEMZ.exe
2304 MEMZ.exe
4596 MEMZ.exe
4252 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
3724	MEMZ.exe
4400	MEMZ.exe
3384	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
4596	MEMZ.exe
4252	MEMZ.exe

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

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

taskmgr.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exe

pid	process
4400	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
3384	MEMZ.exe
3384	MEMZ.exe
3660	MEMZ.exe
3660	MEMZ.exe
3384	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
3384	MEMZ.exe
4596	MEMZ.exe
4596	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
3384	MEMZ.exe
2304	MEMZ.exe
3384	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
2304	MEMZ.exe
3384	MEMZ.exe
4400	MEMZ.exe
3384	MEMZ.exe
4400	MEMZ.exe
4596	MEMZ.exe
4596	MEMZ.exe
2304	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
4596	MEMZ.exe
2304	MEMZ.exe
4596	MEMZ.exe
3384	MEMZ.exe
3384	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
2304	MEMZ.exe
2304	MEMZ.exe
3660	MEMZ.exe
3660	MEMZ.exe
2304	MEMZ.exe
2304	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe
4596	MEMZ.exe
4596	MEMZ.exe
3384	MEMZ.exe
3384	MEMZ.exe
3384	MEMZ.exe
4596	MEMZ.exe
4596	MEMZ.exe
3384	MEMZ.exe
2304	MEMZ.exe
2304	MEMZ.exe
4400	MEMZ.exe
4400	MEMZ.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

taskmgr.exe

description pid process

Token: SeDebugPrivilege 520 taskmgr.exe
Token: SeSystemProfilePrivilege 520 taskmgr.exe
Token: SeCreateGlobalPrivilege 520 taskmgr.exe

description	pid	process
Token: SeDebugPrivilege	520	taskmgr.exe
Token: SeSystemProfilePrivilege	520	taskmgr.exe
Token: SeCreateGlobalPrivilege	520	taskmgr.exe

Suspicious use of FindShellTrayWindow 28 IoCs

Processes:

taskmgr.exe

pid	process
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe

Suspicious use of SendNotifyMessage 28 IoCs

Processes:

taskmgr.exe

pid	process
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe
520	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MEMZ.exe

pid process

4252 MEMZ.exe

pid	process
4252	MEMZ.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

cmd.exeMEMZ.exeMEMZ.exe

description	pid	process	target process
PID 2488 wrote to memory of 2448	2488	cmd.exe	cscript.exe
PID 2488 wrote to memory of 2448	2488	cmd.exe	cscript.exe
PID 2488 wrote to memory of 3724	2488	cmd.exe	MEMZ.exe
PID 2488 wrote to memory of 3724	2488	cmd.exe	MEMZ.exe
PID 2488 wrote to memory of 3724	2488	cmd.exe	MEMZ.exe
PID 3724 wrote to memory of 4400	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4400	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4400	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3384	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3384	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3384	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3660	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3660	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 3660	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 2304	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 2304	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 2304	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4596	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4596	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4596	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4252	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4252	3724	MEMZ.exe	MEMZ.exe
PID 3724 wrote to memory of 4252	3724	MEMZ.exe	MEMZ.exe
PID 4252 wrote to memory of 4216	4252	MEMZ.exe	notepad.exe
PID 4252 wrote to memory of 4216	4252	MEMZ.exe	notepad.exe
PID 4252 wrote to memory of 4216	4252	MEMZ.exe	notepad.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\memz.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2488

C:\Windows\system32\cscript.exe
cscript x.js
2⤵
PID:2448

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:3724

C:\Users\Admin\AppData\Roaming\MEMZ.exe
"C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4400

C:\Users\Admin\AppData\Roaming\MEMZ.exe
"C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3384

C:\Users\Admin\AppData\Roaming\MEMZ.exe
"C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3660

C:\Users\Admin\AppData\Roaming\MEMZ.exe
"C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2304

C:\Users\Admin\AppData\Roaming\MEMZ.exe
"C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4596

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:4252

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\System32\notepad.exe" \note.txt
4⤵
PID:4216

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:520

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39ba855 /state1:0x41c64e6d
1⤵
PID:4896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

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\x
Filesize
4KB

MD5
214f98cb6a54654a4ca5c456f16aed0a

SHA1
2229090d2f6a1814ba648e5b5a5ae26389cba5a0

SHA256
45f18ccd8df88c127304a7855a608661b52b0ca813e87e06d87da15259c45037

SHA512
5f058b05f166e2688df7b3960e135ada25bbcdfbb62a11da3cf9e70c08c51e5589a1e6ca2250318a694d27197f2c5ba1028c443831c43fba2171ca8e072e9873

Download Submit
C:\Users\Admin\AppData\Local\Temp\x
Filesize
11KB

MD5
1882f3dd051e401349f1af58d55b0a37

SHA1
6b0875f9e3164f3a9f21c1ec36748a7243515b47

SHA256
3c8cea1a86f07b018e637a1ea2649d907573f78c7e4025ef7e514362d09ff6c0

SHA512
fec96d873997b5c6c82a94f8796c88fc2dd38739277c517b8129277dcbda02576851f1e27bdb2fbb7255281077d5b9ba867f6dfe66bedfc859c59fdd3bbffacf

Download Submit
C:\Users\Admin\AppData\Local\Temp\x.js
Filesize
448B

MD5
8eec8704d2a7bc80b95b7460c06f4854

SHA1
1b34585c1fa7ec0bd0505478ac9dbb8b8d19f326

SHA256
aa01b8864b43e92077a106ed3d4656a511f3ba1910fba40c78a32ee6a621d596

SHA512
e274b92810e9a30627a65f87448d784967a2fcfbf49858cbe6ccb841f09e0f53fde253ecc1ea0c7de491d8cc56a6cf8c79d1b7c657e72928cfb0479d11035210

Download Submit
C:\Users\Admin\AppData\Local\Temp\z.zip
Filesize
8KB

MD5
63ee4412b95d7ad64c54b4ba673470a7

SHA1
1cf423c6c2c6299e68e1927305a3057af9b3ce06

SHA256
44c1857b1c4894b3dfbaccbe04905652e634283dcf6b06c25a74b17021e2a268

SHA512
7ff153826bd5fed0a410f6d15a54787b79eba927d5b573c8a7f23f4ecef7bb223d79fd29fe8c2754fbf5b4c77ab7c41598f2989b6f4c7b2aa2f579ef4af06ee7

Download Submit
C:\Users\Admin\AppData\Local\Temp\z.zip
Filesize
8KB

MD5
63ee4412b95d7ad64c54b4ba673470a7

SHA1
1cf423c6c2c6299e68e1927305a3057af9b3ce06

SHA256
44c1857b1c4894b3dfbaccbe04905652e634283dcf6b06c25a74b17021e2a268

SHA512
7ff153826bd5fed0a410f6d15a54787b79eba927d5b573c8a7f23f4ecef7bb223d79fd29fe8c2754fbf5b4c77ab7c41598f2989b6f4c7b2aa2f579ef4af06ee7

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\Users\Admin\AppData\Roaming\MEMZ.exe
Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\note.txt
Filesize
218B

MD5
afa6955439b8d516721231029fb9ca1b

SHA1
087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

SHA256
8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

SHA512
5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

Download Submit
memory/520-324-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-325-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-326-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-330-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-331-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-332-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-333-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-334-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-335-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download
memory/520-336-0x0000022026470000-0x0000022026471000-memory.dmp

Filesize
4KB

Download