wastedlocker | 887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

General

Target

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe
Size

1.1MB
MD5

6b20ef8fb494cc6e455220356de298d0
SHA1

763d356d30e81d1cd15f6bc6a31f96181edb0b8f
SHA256

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d
SHA512

ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Score

10^/10

wastedlocker cryptone discovery exploit packer ransomware

Malware Config

Signatures

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker

CryptOne packer 4 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Session:bin	cryptone
C:\Users\Admin\AppData\Roaming\Session:bin	cryptone
C:\Windows\SysWOW64\Session.exe	cryptone
C:\Windows\SysWOW64\Session.exe	cryptone

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:

Session:binSession.exe

pid process

1232 Session:bin
692 Session.exe

pid	process
1232	Session:bin
692	Session.exe

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

Session.exe

description	ioc	process
File created	C:\Users\Admin\Pictures\NewFind.raw.bbawasted_info	Session.exe
File renamed	C:\Users\Admin\Pictures\RedoImport.crw => C:\Users\Admin\Pictures\RedoImport.crw.bbawasted	Session.exe
File created	C:\Users\Admin\Pictures\RenameLimit.tif.bbawasted_info	Session.exe
File renamed	C:\Users\Admin\Pictures\RenameLimit.tif => C:\Users\Admin\Pictures\RenameLimit.tif.bbawasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\RenameLimit.tif.bbawasted	Session.exe
File renamed	C:\Users\Admin\Pictures\NewFind.raw => C:\Users\Admin\Pictures\NewFind.raw.bbawasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\NewFind.raw.bbawasted	Session.exe
File created	C:\Users\Admin\Pictures\RedoImport.crw.bbawasted_info	Session.exe
File opened for modification	C:\Users\Admin\Pictures\RedoImport.crw.bbawasted	Session.exe

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1412 takeown.exe
268 icacls.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1668 cmd.exe

pid	process
1412	takeown.exe
268	icacls.exe

pid	process
1668	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe

pid	process
1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe
1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe

Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1412 takeown.exe
268 icacls.exe

pid	process
1412	takeown.exe
268	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

Session:binattrib.exe

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

1992 vssadmin.exe

pid	process
1992	vssadmin.exe

NTFS ADS 1 IoCs

Processes:

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Session:bin	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1776 vssvc.exe
Token: SeRestorePrivilege 1776 vssvc.exe
Token: SeAuditPrivilege 1776 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1776	vssvc.exe
Token: SeRestorePrivilege	1776	vssvc.exe
Token: SeAuditPrivilege	1776	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exeSession:binSession.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1088 wrote to memory of 1232	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	Session:bin
PID 1088 wrote to memory of 1232	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	Session:bin
PID 1088 wrote to memory of 1232	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	Session:bin
PID 1088 wrote to memory of 1232	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	Session:bin
PID 1232 wrote to memory of 1992	1232	Session:bin	vssadmin.exe
PID 1232 wrote to memory of 1992	1232	Session:bin	vssadmin.exe
PID 1232 wrote to memory of 1992	1232	Session:bin	vssadmin.exe
PID 1232 wrote to memory of 1992	1232	Session:bin	vssadmin.exe
PID 1232 wrote to memory of 1412	1232	Session:bin	takeown.exe
PID 1232 wrote to memory of 1412	1232	Session:bin	takeown.exe
PID 1232 wrote to memory of 1412	1232	Session:bin	takeown.exe
PID 1232 wrote to memory of 1412	1232	Session:bin	takeown.exe
PID 1232 wrote to memory of 268	1232	Session:bin	icacls.exe
PID 1232 wrote to memory of 268	1232	Session:bin	icacls.exe
PID 1232 wrote to memory of 268	1232	Session:bin	icacls.exe
PID 1232 wrote to memory of 268	1232	Session:bin	icacls.exe
PID 692 wrote to memory of 1860	692	Session.exe	cmd.exe
PID 692 wrote to memory of 1860	692	Session.exe	cmd.exe
PID 692 wrote to memory of 1860	692	Session.exe	cmd.exe
PID 692 wrote to memory of 1860	692	Session.exe	cmd.exe
PID 1860 wrote to memory of 292	1860	cmd.exe	choice.exe
PID 1860 wrote to memory of 292	1860	cmd.exe	choice.exe
PID 1860 wrote to memory of 292	1860	cmd.exe	choice.exe
PID 1860 wrote to memory of 292	1860	cmd.exe	choice.exe
PID 1232 wrote to memory of 952	1232	Session:bin	cmd.exe
PID 1232 wrote to memory of 952	1232	Session:bin	cmd.exe
PID 1232 wrote to memory of 952	1232	Session:bin	cmd.exe
PID 1232 wrote to memory of 952	1232	Session:bin	cmd.exe
PID 1088 wrote to memory of 1668	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	cmd.exe
PID 1088 wrote to memory of 1668	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	cmd.exe
PID 1088 wrote to memory of 1668	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	cmd.exe
PID 1088 wrote to memory of 1668	1088	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe	cmd.exe
PID 952 wrote to memory of 2004	952	cmd.exe	choice.exe
PID 952 wrote to memory of 2004	952	cmd.exe	choice.exe
PID 952 wrote to memory of 2004	952	cmd.exe	choice.exe
PID 952 wrote to memory of 2004	952	cmd.exe	choice.exe
PID 1668 wrote to memory of 1980	1668	cmd.exe	choice.exe
PID 1668 wrote to memory of 1980	1668	cmd.exe	choice.exe
PID 1668 wrote to memory of 1980	1668	cmd.exe	choice.exe
PID 1668 wrote to memory of 1980	1668	cmd.exe	choice.exe
PID 1860 wrote to memory of 1196	1860	cmd.exe	attrib.exe
PID 1860 wrote to memory of 1196	1860	cmd.exe	attrib.exe
PID 1860 wrote to memory of 1196	1860	cmd.exe	attrib.exe
PID 1860 wrote to memory of 1196	1860	cmd.exe	attrib.exe
PID 952 wrote to memory of 1364	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1364	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1364	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1364	952	cmd.exe	attrib.exe
PID 1668 wrote to memory of 1548	1668	cmd.exe	attrib.exe
PID 1668 wrote to memory of 1548	1668	cmd.exe	attrib.exe
PID 1668 wrote to memory of 1548	1668	cmd.exe	attrib.exe
PID 1668 wrote to memory of 1548	1668	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

1196 attrib.exe
1364 attrib.exe
1548 attrib.exe

pid	process
1196	attrib.exe
1364	attrib.exe
1548	attrib.exe

C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe
"C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1088

C:\Users\Admin\AppData\Roaming\Session:bin
C:\Users\Admin\AppData\Roaming\Session:bin -r
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1232

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1992

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Session.exe
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1412

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Session.exe /reset
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:268

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Session" & del "C:\Users\Admin\AppData\Roaming\Session"
3⤵
- Suspicious use of WriteProcessMemory
PID:952

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:2004

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Session"
4⤵
- Views/modifies file attributes
PID:1364

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1980

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.sample.exe"
3⤵
- Views/modifies file attributes
PID:1548

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1776

C:\Windows\SysWOW64\Session.exe
C:\Windows\SysWOW64\Session.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Session.exe" & del "C:\Windows\SysWOW64\Session.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1860

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:292

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Session.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:1196

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

File Permissions Modification

1

T1222

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Session:bin
MD5
6b20ef8fb494cc6e455220356de298d0

SHA1
763d356d30e81d1cd15f6bc6a31f96181edb0b8f

SHA256
887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

SHA512
ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Download Submit
C:\Users\Admin\AppData\Roaming\Session:bin
MD5
6b20ef8fb494cc6e455220356de298d0

SHA1
763d356d30e81d1cd15f6bc6a31f96181edb0b8f

SHA256
887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

SHA512
ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Download Submit
C:\Windows\SysWOW64\Session.exe
MD5
6b20ef8fb494cc6e455220356de298d0

SHA1
763d356d30e81d1cd15f6bc6a31f96181edb0b8f

SHA256
887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

SHA512
ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Download Submit
C:\Windows\SysWOW64\Session.exe
MD5
6b20ef8fb494cc6e455220356de298d0

SHA1
763d356d30e81d1cd15f6bc6a31f96181edb0b8f

SHA256
887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

SHA512
ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Download Submit
\Users\Admin\AppData\Roaming\Session
MD5
f4b36bf2bad783478fcbe9c1f9620c9e

SHA1
c340ccd703873b353f843f6c50a51f17c037aee6

SHA256
5b4711c0e0a819ac8637c0946e5b9fc62b4ba819b1c234a8bff3d499cb268430

SHA512
f416d29027a4971e713c546b7cc47e68b98690d59eaaad97be056d05463a3dcea33220b5dae4c40d189e01d5a14cc3c0e45f19a4cc5c6424e67d651cd24300ae

Download Submit
\Users\Admin\AppData\Roaming\Session
MD5
f4b36bf2bad783478fcbe9c1f9620c9e

SHA1
c340ccd703873b353f843f6c50a51f17c037aee6

SHA256
5b4711c0e0a819ac8637c0946e5b9fc62b4ba819b1c234a8bff3d499cb268430

SHA512
f416d29027a4971e713c546b7cc47e68b98690d59eaaad97be056d05463a3dcea33220b5dae4c40d189e01d5a14cc3c0e45f19a4cc5c6424e67d651cd24300ae

Download Submit
memory/268-72-0x0000000000000000-mapping.dmp

Download
memory/292-77-0x0000000000000000-mapping.dmp

Download
memory/692-75-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/952-78-0x0000000000000000-mapping.dmp

Download
memory/1088-62-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-61-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/1088-60-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1196-82-0x0000000000000000-mapping.dmp

Download
memory/1232-65-0x0000000000000000-mapping.dmp

Download
memory/1364-83-0x0000000000000000-mapping.dmp

Download
memory/1412-70-0x0000000000000000-mapping.dmp

Download
memory/1548-84-0x0000000000000000-mapping.dmp

Download
memory/1668-79-0x0000000000000000-mapping.dmp

Download
memory/1860-76-0x0000000000000000-mapping.dmp

Download
memory/1980-81-0x0000000000000000-mapping.dmp

Download
memory/1992-68-0x0000000000000000-mapping.dmp

Download
memory/2004-80-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads