081f5e20e8714daab866fc9de69e2eda3282b1e46c538a01043ee786f35176d0

General

Target

8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe
Size

1.2MB
MD5

7e34c5bd27f25a1e1d47a27702708e28
SHA1

fb65ea1cc1d81a17effe16ecd2d10f34975a67d8
SHA256

8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01
SHA512

2b4099e3f15dfd6414c812e87c5f8cfd1926234012e6c67e71433bc4bed7c823ca6d19f8bb927d16ee8e32859b663a9cbccc890eedb3cdaebb8ec2c04784114f

Score

9^/10

ransomware discovery persistence exploit

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Executes dropped EXE 2 IoCs

Processes:

Diag:binDiag.exe

pid process

756 Diag:bin
1508 Diag.exe

pid	process
756	Diag:bin
1508	Diag.exe

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

Diag.exe

description	ioc	process
File created	C:\Users\Admin\Pictures\DisconnectInstall.raw.easy2lock_read_me	Diag.exe
File opened for modification	C:\Users\Admin\Pictures\DisconnectInstall.raw.easy2lock	Diag.exe
File renamed	C:\Users\Admin\Pictures\SearchSet.tiff => C:\Users\Admin\Pictures\SearchSet.tiff.easy2lock	Diag.exe
File created	C:\Users\Admin\Pictures\WaitGroup.tif.easy2lock_read_me	Diag.exe
File opened for modification	C:\Users\Admin\Pictures\WaitGroup.tif.easy2lock	Diag.exe
File renamed	C:\Users\Admin\Pictures\DisconnectInstall.raw => C:\Users\Admin\Pictures\DisconnectInstall.raw.easy2lock	Diag.exe
File created	C:\Users\Admin\Pictures\JoinUninstall.tiff.easy2lock_read_me	Diag.exe
File renamed	C:\Users\Admin\Pictures\JoinUninstall.tiff => C:\Users\Admin\Pictures\JoinUninstall.tiff.easy2lock	Diag.exe
File opened for modification	C:\Users\Admin\Pictures\JoinUninstall.tiff.easy2lock	Diag.exe
File created	C:\Users\Admin\Pictures\SearchSet.tiff.easy2lock_read_me	Diag.exe
File opened for modification	C:\Users\Admin\Pictures\SearchSet.tiff.easy2lock	Diag.exe
File renamed	C:\Users\Admin\Pictures\WaitGroup.tif => C:\Users\Admin\Pictures\WaitGroup.tif.easy2lock	Diag.exe

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1640 takeown.exe
1584 icacls.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

580 cmd.exe

pid	process
1640	takeown.exe
1584	icacls.exe

pid	process
580	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe

pid	process
848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe
848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe

Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1640 takeown.exe
1584 icacls.exe

pid	process
1640	takeown.exe
1584	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

Diag:binattrib.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Diag.exe	Diag:bin
File opened for modification	C:\Windows\SysWOW64\Diag.exe	attrib.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

vssvc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5}	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer	vssvc.exe

Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

1056 vssadmin.exe

pid	process
1056	vssadmin.exe

NTFS ADS 1 IoCs

Processes:

8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Diag:bin	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1540 vssvc.exe
Token: SeRestorePrivilege 1540 vssvc.exe
Token: SeAuditPrivilege 1540 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1540	vssvc.exe
Token: SeRestorePrivilege	1540	vssvc.exe
Token: SeAuditPrivilege	1540	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exeDiag:binDiag.execmd.execmd.execmd.exe

description	pid	process	target process
PID 848 wrote to memory of 756	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	Diag:bin
PID 848 wrote to memory of 756	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	Diag:bin
PID 848 wrote to memory of 756	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	Diag:bin
PID 848 wrote to memory of 756	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	Diag:bin
PID 756 wrote to memory of 1056	756	Diag:bin	vssadmin.exe
PID 756 wrote to memory of 1056	756	Diag:bin	vssadmin.exe
PID 756 wrote to memory of 1056	756	Diag:bin	vssadmin.exe
PID 756 wrote to memory of 1056	756	Diag:bin	vssadmin.exe
PID 756 wrote to memory of 1640	756	Diag:bin	takeown.exe
PID 756 wrote to memory of 1640	756	Diag:bin	takeown.exe
PID 756 wrote to memory of 1640	756	Diag:bin	takeown.exe
PID 756 wrote to memory of 1640	756	Diag:bin	takeown.exe
PID 756 wrote to memory of 1584	756	Diag:bin	icacls.exe
PID 756 wrote to memory of 1584	756	Diag:bin	icacls.exe
PID 756 wrote to memory of 1584	756	Diag:bin	icacls.exe
PID 756 wrote to memory of 1584	756	Diag:bin	icacls.exe
PID 1508 wrote to memory of 1992	1508	Diag.exe	cmd.exe
PID 1508 wrote to memory of 1992	1508	Diag.exe	cmd.exe
PID 1508 wrote to memory of 1992	1508	Diag.exe	cmd.exe
PID 1508 wrote to memory of 1992	1508	Diag.exe	cmd.exe
PID 1992 wrote to memory of 1972	1992	cmd.exe	choice.exe
PID 1992 wrote to memory of 1972	1992	cmd.exe	choice.exe
PID 1992 wrote to memory of 1972	1992	cmd.exe	choice.exe
PID 1992 wrote to memory of 1972	1992	cmd.exe	choice.exe
PID 756 wrote to memory of 676	756	Diag:bin	cmd.exe
PID 756 wrote to memory of 676	756	Diag:bin	cmd.exe
PID 756 wrote to memory of 676	756	Diag:bin	cmd.exe
PID 756 wrote to memory of 676	756	Diag:bin	cmd.exe
PID 848 wrote to memory of 580	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	cmd.exe
PID 848 wrote to memory of 580	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	cmd.exe
PID 848 wrote to memory of 580	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	cmd.exe
PID 848 wrote to memory of 580	848	8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe	cmd.exe
PID 676 wrote to memory of 1392	676	cmd.exe	choice.exe
PID 676 wrote to memory of 1392	676	cmd.exe	choice.exe
PID 676 wrote to memory of 1392	676	cmd.exe	choice.exe
PID 676 wrote to memory of 1392	676	cmd.exe	choice.exe
PID 580 wrote to memory of 1548	580	cmd.exe	choice.exe
PID 580 wrote to memory of 1548	580	cmd.exe	choice.exe
PID 580 wrote to memory of 1548	580	cmd.exe	choice.exe
PID 580 wrote to memory of 1548	580	cmd.exe	choice.exe
PID 1992 wrote to memory of 2032	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 2032	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 2032	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 2032	1992	cmd.exe	attrib.exe
PID 580 wrote to memory of 1468	580	cmd.exe	attrib.exe
PID 580 wrote to memory of 1468	580	cmd.exe	attrib.exe
PID 580 wrote to memory of 1468	580	cmd.exe	attrib.exe
PID 580 wrote to memory of 1468	580	cmd.exe	attrib.exe
PID 676 wrote to memory of 1516	676	cmd.exe	attrib.exe
PID 676 wrote to memory of 1516	676	cmd.exe	attrib.exe
PID 676 wrote to memory of 1516	676	cmd.exe	attrib.exe
PID 676 wrote to memory of 1516	676	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

1468 attrib.exe
1516 attrib.exe
2032 attrib.exe

pid	process
1468	attrib.exe
1516	attrib.exe
2032	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe
"C:\Users\Admin\AppData\Local\Temp\8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:848

C:\Users\Admin\AppData\Roaming\Diag:bin
C:\Users\Admin\AppData\Roaming\Diag:bin -r
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1056

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Diag.exe
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1640

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Diag.exe /reset
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1584

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Diag" & del "C:\Users\Admin\AppData\Roaming\Diag"
3⤵
- Suspicious use of WriteProcessMemory
PID:676

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1392

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Diag"
4⤵
- Views/modifies file attributes
PID:1516

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe" & del "C:\Users\Admin\AppData\Local\Temp\8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1548

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01.exe"
3⤵
- Views/modifies file attributes
PID:1468

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1540

C:\Windows\SysWOW64\Diag.exe
C:\Windows\SysWOW64\Diag.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1508

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Diag.exe" & del "C:\Windows\SysWOW64\Diag.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1972

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Diag.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:2032

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

File Permissions Modification

1

T1222

Modify Registry

1

T1112

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\Users\Admin\AppData\Roaming\Diag:bin
MD5
7e34c5bd27f25a1e1d47a27702708e28

SHA1
fb65ea1cc1d81a17effe16ecd2d10f34975a67d8

SHA256
8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01

SHA512
2b4099e3f15dfd6414c812e87c5f8cfd1926234012e6c67e71433bc4bed7c823ca6d19f8bb927d16ee8e32859b663a9cbccc890eedb3cdaebb8ec2c04784114f

Download Submit
C:\Users\Admin\AppData\Roaming\Diag:bin
MD5
7e34c5bd27f25a1e1d47a27702708e28

SHA1
fb65ea1cc1d81a17effe16ecd2d10f34975a67d8

SHA256
8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01

SHA512
2b4099e3f15dfd6414c812e87c5f8cfd1926234012e6c67e71433bc4bed7c823ca6d19f8bb927d16ee8e32859b663a9cbccc890eedb3cdaebb8ec2c04784114f

Download Submit
C:\Windows\SysWOW64\Diag.exe
MD5
7e34c5bd27f25a1e1d47a27702708e28

SHA1
fb65ea1cc1d81a17effe16ecd2d10f34975a67d8

SHA256
8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01

SHA512
2b4099e3f15dfd6414c812e87c5f8cfd1926234012e6c67e71433bc4bed7c823ca6d19f8bb927d16ee8e32859b663a9cbccc890eedb3cdaebb8ec2c04784114f

Download Submit
C:\Windows\SysWOW64\Diag.exe
MD5
7e34c5bd27f25a1e1d47a27702708e28

SHA1
fb65ea1cc1d81a17effe16ecd2d10f34975a67d8

SHA256
8dc3389d37519b24aef2bcf2a15530ea1b13ff4b98228967c9876835bdb99a01

SHA512
2b4099e3f15dfd6414c812e87c5f8cfd1926234012e6c67e71433bc4bed7c823ca6d19f8bb927d16ee8e32859b663a9cbccc890eedb3cdaebb8ec2c04784114f

Download Submit
\Users\Admin\AppData\Roaming\Diag
MD5
207cf171b1c6b8ae50c1fbf87363eebc

SHA1
a26252ed88a6330f7d4919c25ae2511b02a2840f

SHA256
c1acacb32a63b52a08af2a52b4736b9d737116aeebd51c28eae804a03497642a

SHA512
e5e5d64f3722c111b045c0b49c327b7815bd134dd7dd850faeaf65501a59d1c45e8495cfda2fe48edc53a975c7ddc7894dfa4bc916db15b91b78fd7ed7001b64

Download Submit
\Users\Admin\AppData\Roaming\Diag
MD5
207cf171b1c6b8ae50c1fbf87363eebc

SHA1
a26252ed88a6330f7d4919c25ae2511b02a2840f

SHA256
c1acacb32a63b52a08af2a52b4736b9d737116aeebd51c28eae804a03497642a

SHA512
e5e5d64f3722c111b045c0b49c327b7815bd134dd7dd850faeaf65501a59d1c45e8495cfda2fe48edc53a975c7ddc7894dfa4bc916db15b91b78fd7ed7001b64

Download Submit
memory/580-13-0x0000000000000000-mapping.dmp

Download
memory/676-12-0x0000000000000000-mapping.dmp

Download
memory/756-2-0x0000000000000000-mapping.dmp

Download
memory/1056-4-0x0000000000000000-mapping.dmp

Download
memory/1392-14-0x0000000000000000-mapping.dmp

Download
memory/1468-17-0x0000000000000000-mapping.dmp

Download
memory/1516-18-0x0000000000000000-mapping.dmp

Download
memory/1548-15-0x0000000000000000-mapping.dmp

Download
memory/1584-8-0x0000000000000000-mapping.dmp

Download
memory/1640-6-0x0000000000000000-mapping.dmp

Download
memory/1972-11-0x0000000000000000-mapping.dmp

Download
memory/1992-10-0x0000000000000000-mapping.dmp

Download
memory/2032-16-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads