wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

General

Target

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe
Size

1.0MB
MD5

572fea5f025df78f2d316216fbeee52e
SHA1

91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA256

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
SHA512

eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

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

1212 Session:bin
1208 Session.exe

pid	process
1212	Session:bin
1208	Session.exe

Modifies extensions of user files 21 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

Session.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\GrantUndo.raw.rlhwasted	Session.exe
File renamed	C:\Users\Admin\Pictures\InvokeSearch.tiff => C:\Users\Admin\Pictures\InvokeSearch.tiff.rlhwasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\InvokeSearch.tiff.rlhwasted	Session.exe
File renamed	C:\Users\Admin\Pictures\RedoTrace.png => C:\Users\Admin\Pictures\RedoTrace.png.rlhwasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\RedoTrace.png.rlhwasted	Session.exe
File renamed	C:\Users\Admin\Pictures\BackupAdd.tiff => C:\Users\Admin\Pictures\BackupAdd.tiff.rlhwasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\BackupAdd.tiff.rlhwasted	Session.exe
File renamed	C:\Users\Admin\Pictures\DebugTrace.png => C:\Users\Admin\Pictures\DebugTrace.png.rlhwasted	Session.exe
File created	C:\Users\Admin\Pictures\InvokeSearch.tiff.rlhwasted_info	Session.exe
File renamed	C:\Users\Admin\Pictures\AssertOptimize.png => C:\Users\Admin\Pictures\AssertOptimize.png.rlhwasted	Session.exe
File opened for modification	C:\Users\Admin\Pictures\AssertOptimize.png.rlhwasted	Session.exe
File created	C:\Users\Admin\Pictures\DebugTrace.png.rlhwasted_info	Session.exe
File renamed	C:\Users\Admin\Pictures\RestartDisable.tif => C:\Users\Admin\Pictures\RestartDisable.tif.rlhwasted	Session.exe
File created	C:\Users\Admin\Pictures\GrantUndo.raw.rlhwasted_info	Session.exe
File renamed	C:\Users\Admin\Pictures\GrantUndo.raw => C:\Users\Admin\Pictures\GrantUndo.raw.rlhwasted	Session.exe
File created	C:\Users\Admin\Pictures\RestartDisable.tif.rlhwasted_info	Session.exe
File created	C:\Users\Admin\Pictures\RedoTrace.png.rlhwasted_info	Session.exe
File opened for modification	C:\Users\Admin\Pictures\RestartDisable.tif.rlhwasted	Session.exe
File created	C:\Users\Admin\Pictures\AssertOptimize.png.rlhwasted_info	Session.exe
File created	C:\Users\Admin\Pictures\BackupAdd.tiff.rlhwasted_info	Session.exe
File opened for modification	C:\Users\Admin\Pictures\DebugTrace.png.rlhwasted	Session.exe

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1644 takeown.exe
672 icacls.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

972 cmd.exe

pid	process
1644	takeown.exe
672	icacls.exe

pid	process
972	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe

pid	process
1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe
1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe

Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1644 takeown.exe
672 icacls.exe

pid	process
1644	takeown.exe
672	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

1928 vssadmin.exe

pid	process
1928	vssadmin.exe

NTFS ADS 1 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Session:bin	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1788 vssvc.exe
Token: SeRestorePrivilege 1788 vssvc.exe
Token: SeAuditPrivilege 1788 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1788	vssvc.exe
Token: SeRestorePrivilege	1788	vssvc.exe
Token: SeAuditPrivilege	1788	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exeSession:binSession.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1672 wrote to memory of 1212	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	Session:bin
PID 1672 wrote to memory of 1212	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	Session:bin
PID 1672 wrote to memory of 1212	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	Session:bin
PID 1672 wrote to memory of 1212	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	Session:bin
PID 1212 wrote to memory of 1928	1212	Session:bin	vssadmin.exe
PID 1212 wrote to memory of 1928	1212	Session:bin	vssadmin.exe
PID 1212 wrote to memory of 1928	1212	Session:bin	vssadmin.exe
PID 1212 wrote to memory of 1928	1212	Session:bin	vssadmin.exe
PID 1212 wrote to memory of 1644	1212	Session:bin	takeown.exe
PID 1212 wrote to memory of 1644	1212	Session:bin	takeown.exe
PID 1212 wrote to memory of 1644	1212	Session:bin	takeown.exe
PID 1212 wrote to memory of 1644	1212	Session:bin	takeown.exe
PID 1212 wrote to memory of 672	1212	Session:bin	icacls.exe
PID 1212 wrote to memory of 672	1212	Session:bin	icacls.exe
PID 1212 wrote to memory of 672	1212	Session:bin	icacls.exe
PID 1212 wrote to memory of 672	1212	Session:bin	icacls.exe
PID 1208 wrote to memory of 748	1208	Session.exe	cmd.exe
PID 1208 wrote to memory of 748	1208	Session.exe	cmd.exe
PID 1208 wrote to memory of 748	1208	Session.exe	cmd.exe
PID 1208 wrote to memory of 748	1208	Session.exe	cmd.exe
PID 1212 wrote to memory of 1816	1212	Session:bin	cmd.exe
PID 1212 wrote to memory of 1816	1212	Session:bin	cmd.exe
PID 1212 wrote to memory of 1816	1212	Session:bin	cmd.exe
PID 1212 wrote to memory of 1816	1212	Session:bin	cmd.exe
PID 1672 wrote to memory of 972	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	cmd.exe
PID 1672 wrote to memory of 972	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	cmd.exe
PID 1672 wrote to memory of 972	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	cmd.exe
PID 1672 wrote to memory of 972	1672	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe	cmd.exe
PID 1816 wrote to memory of 1692	1816	cmd.exe	choice.exe
PID 1816 wrote to memory of 1692	1816	cmd.exe	choice.exe
PID 1816 wrote to memory of 1692	1816	cmd.exe	choice.exe
PID 1816 wrote to memory of 1692	1816	cmd.exe	choice.exe
PID 748 wrote to memory of 896	748	cmd.exe	choice.exe
PID 748 wrote to memory of 896	748	cmd.exe	choice.exe
PID 748 wrote to memory of 896	748	cmd.exe	choice.exe
PID 748 wrote to memory of 896	748	cmd.exe	choice.exe
PID 972 wrote to memory of 928	972	cmd.exe	choice.exe
PID 972 wrote to memory of 928	972	cmd.exe	choice.exe
PID 972 wrote to memory of 928	972	cmd.exe	choice.exe
PID 972 wrote to memory of 928	972	cmd.exe	choice.exe
PID 1816 wrote to memory of 1536	1816	cmd.exe	attrib.exe
PID 1816 wrote to memory of 1536	1816	cmd.exe	attrib.exe
PID 1816 wrote to memory of 1536	1816	cmd.exe	attrib.exe
PID 1816 wrote to memory of 1536	1816	cmd.exe	attrib.exe
PID 748 wrote to memory of 1620	748	cmd.exe	attrib.exe
PID 748 wrote to memory of 1620	748	cmd.exe	attrib.exe
PID 748 wrote to memory of 1620	748	cmd.exe	attrib.exe
PID 748 wrote to memory of 1620	748	cmd.exe	attrib.exe
PID 972 wrote to memory of 1724	972	cmd.exe	attrib.exe
PID 972 wrote to memory of 1724	972	cmd.exe	attrib.exe
PID 972 wrote to memory of 1724	972	cmd.exe	attrib.exe
PID 972 wrote to memory of 1724	972	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

1620 attrib.exe
1536 attrib.exe
1724 attrib.exe

pid	process
1620	attrib.exe
1536	attrib.exe
1724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1672

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:1212

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1928

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:1644

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:672

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:1816

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1692

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Session"
4⤵
- Views/modifies file attributes
PID:1536

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:928

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.sample.exe"
3⤵
- Views/modifies file attributes
PID:1724

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1788

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:1208

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:748

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:896

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Session.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:1620

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

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Downloads

C:\Users\Admin\AppData\Roaming\Session:bin
MD5
572fea5f025df78f2d316216fbeee52e

SHA1
91b2bf44b1f9282c09f07f16631deaa3ad9d956d

SHA256
5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

SHA512
eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Download Submit
C:\Users\Admin\AppData\Roaming\Session:bin
MD5
572fea5f025df78f2d316216fbeee52e

SHA1
91b2bf44b1f9282c09f07f16631deaa3ad9d956d

SHA256
5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

SHA512
eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Download Submit
C:\Windows\SysWOW64\Session.exe
MD5
572fea5f025df78f2d316216fbeee52e

SHA1
91b2bf44b1f9282c09f07f16631deaa3ad9d956d

SHA256
5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

SHA512
eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Download Submit
C:\Windows\SysWOW64\Session.exe
MD5
572fea5f025df78f2d316216fbeee52e

SHA1
91b2bf44b1f9282c09f07f16631deaa3ad9d956d

SHA256
5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

SHA512
eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Download Submit
\Users\Admin\AppData\Roaming\Session
MD5
5fd9f4da2a693eff494b2ad2f2b46f74

SHA1
1fb1217ea249931b3af8bb7a721a4b47c1045c9d

SHA256
2fe0c34b05264f9c0eb09948a058f89e404682150dbbba1613015bfd08391307

SHA512
ed07f24e00e0d2afab5b4dd7f0c6ae13bb7c509c00bcc16ae40ec74e1b34517ac3013929837e2bba8c8848b73cb4fdf49eb0ec42831258e0f9393338c0d22307

Download Submit
\Users\Admin\AppData\Roaming\Session
MD5
5fd9f4da2a693eff494b2ad2f2b46f74

SHA1
1fb1217ea249931b3af8bb7a721a4b47c1045c9d

SHA256
2fe0c34b05264f9c0eb09948a058f89e404682150dbbba1613015bfd08391307

SHA512
ed07f24e00e0d2afab5b4dd7f0c6ae13bb7c509c00bcc16ae40ec74e1b34517ac3013929837e2bba8c8848b73cb4fdf49eb0ec42831258e0f9393338c0d22307

Download Submit
memory/672-72-0x0000000000000000-mapping.dmp

Download
memory/748-76-0x0000000000000000-mapping.dmp

Download
memory/896-80-0x0000000000000000-mapping.dmp

Download
memory/928-81-0x0000000000000000-mapping.dmp

Download
memory/972-78-0x0000000000000000-mapping.dmp

Download
memory/1208-75-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

Download
memory/1212-63-0x0000000000000000-mapping.dmp

Download
memory/1536-82-0x0000000000000000-mapping.dmp

Download
memory/1620-83-0x0000000000000000-mapping.dmp

Download
memory/1644-70-0x0000000000000000-mapping.dmp

Download
memory/1672-67-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/1672-68-0x0000000000400000-0x0000000000507000-memory.dmp

Filesize
1.0MB

Download
memory/1672-60-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/1692-79-0x0000000000000000-mapping.dmp

Download
memory/1724-84-0x0000000000000000-mapping.dmp

Download
memory/1816-77-0x0000000000000000-mapping.dmp

Download
memory/1928-66-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads