wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

Analysis

max time kernel
103s
max time network
136s
platform
windows10_x64
resource
win10
submitted
30-06-2020 13:07

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General

Target

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
Size

1.0MB
MD5

572fea5f025df78f2d316216fbeee52e
SHA1

91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA256

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
SHA512

eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Score

10^/10

ransomware persistence wastedlocker exploit discovery

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\GetStep.vsdm.txt

Family

wastedlocker

Ransom Note

RL Hudson YOUR NETWORK IS ENCRYPTED NOW USE [email protected] | [email protected] TO GET THE PRICE FOR YOUR DATA DO NOT GIVE THIS EMAIL TO 3RD PARTIES DO NOT RENAME OR MOVE THE FILE THE FILE IS ENCRYPTED WITH THE FOLLOWING KEY: [begin_key]AMMvvfBFxT/SglXwsLFjZfsgxAjEV7S7t5/+VLJYw1FBbOlJsOekbqf7oZ+5zjU+ CUpP2x0iyK7XixJd/mJ4lg2JeoEgCTsv/1gneuN4XxuHByhenCVYmso9x/ZV//el /gOj+1rfzvI1MwDu2fg2VlXiBJPb25Lr620RyEcmhUen/WIuhy2Wd11OT3M0Wvy5 yVi4jN1gjIiTnF/ctyNlcebIeouD4pUAKBZHWM1GfIXzjqPLiSnD/4hL/+kdXLO5 Q/aEWpsfvgdtVMysBVACIx9XMzbnFIAVGId4t72opfD/RSoSNlHIRzTxVWMdKrhO 4xzfpALd/WN2PaGrRK+eZYE5CVVnJ+pl9xWMuDyC0A48vJ2Lq2w+5ItQvMxNoX8U ZhfJOjt6SCJJ88g5fWy5Evhn/NxIlrIDZoIoy9FkGu6gv6euJooNWWm/DqbliB72 i8vdNJLrQKC1hVqi1Ofsecmb85XE+GRVpOFmQ6U1fvN6fjNpPONcs8KBCj396S98 auTiSjEbfNayu+LoMCeWglULtF4knXs5ZY8eNMr65PQol90eD4mx8KpD8AuZSyGy /BQirSkE/Ed2BzULpE1U0Bqnmryqeg31mu8Zg64MqoFOaGH8YngjdJ4qYROwzkmP +aaodiaPHV9dz3SJLyGwVVTymX7O88HUyn/dMAh/p4x=[end_key] KEEP IT

Emails

[email protected]

Signatures

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2980	NOTEPAD.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

pid	Process
3916	vssadmin.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1104	attrib.exe
996	attrib.exe
692	attrib.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3796	vssvc.exe
Token: SeRestorePrivilege	3796	vssvc.exe
Token: SeAuditPrivilege	3796	vssvc.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

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

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

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1660	takeown.exe
3988	icacls.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Initial:bin	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Initial.exe	Initial:bin
File opened for modification	C:\Windows\SysWOW64\Initial.exe	attrib.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 3836	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	67
PID 3068 wrote to memory of 3836	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	67
PID 3068 wrote to memory of 3836	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	67
PID 3836 wrote to memory of 3916	3836	Initial:bin	68
PID 3836 wrote to memory of 3916	3836	Initial:bin	68
PID 3836 wrote to memory of 1660	3836	Initial:bin	72
PID 3836 wrote to memory of 1660	3836	Initial:bin	72
PID 3836 wrote to memory of 1660	3836	Initial:bin	72
PID 3836 wrote to memory of 3988	3836	Initial:bin	74
PID 3836 wrote to memory of 3988	3836	Initial:bin	74
PID 3836 wrote to memory of 3988	3836	Initial:bin	74
PID 3100 wrote to memory of 3976	3100	Initial.exe	77
PID 3100 wrote to memory of 3976	3100	Initial.exe	77
PID 3100 wrote to memory of 3976	3100	Initial.exe	77
PID 3976 wrote to memory of 2068	3976	cmd.exe	79
PID 3976 wrote to memory of 2068	3976	cmd.exe	79
PID 3976 wrote to memory of 2068	3976	cmd.exe	79
PID 3836 wrote to memory of 3764	3836	Initial:bin	81
PID 3836 wrote to memory of 3764	3836	Initial:bin	81
PID 3836 wrote to memory of 3764	3836	Initial:bin	81
PID 3068 wrote to memory of 416	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	83
PID 3068 wrote to memory of 416	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	83
PID 3068 wrote to memory of 416	3068	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	83
PID 3764 wrote to memory of 896	3764	cmd.exe	85
PID 3764 wrote to memory of 896	3764	cmd.exe	85
PID 3764 wrote to memory of 896	3764	cmd.exe	85
PID 416 wrote to memory of 836	416	cmd.exe	86
PID 416 wrote to memory of 836	416	cmd.exe	86
PID 416 wrote to memory of 836	416	cmd.exe	86
PID 3976 wrote to memory of 996	3976	cmd.exe	87
PID 3976 wrote to memory of 996	3976	cmd.exe	87
PID 3976 wrote to memory of 996	3976	cmd.exe	87
PID 3764 wrote to memory of 692	3764	cmd.exe	88
PID 3764 wrote to memory of 692	3764	cmd.exe	88
PID 3764 wrote to memory of 692	3764	cmd.exe	88
PID 416 wrote to memory of 1104	416	cmd.exe	89
PID 416 wrote to memory of 1104	416	cmd.exe	89
PID 416 wrote to memory of 1104	416	cmd.exe	89

Executes dropped EXE 2 IoCs

pid	Process
3836	Initial:bin
3100	Initial.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1660	takeown.exe
3988	icacls.exe

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Users\Admin\AppData\Roaming\Initial:bin
  C:\Users\Admin\AppData\Roaming\Initial:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:3836
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3916
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Initial.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1660
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Initial.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3988
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Initial" & del "C:\Users\Admin\AppData\Roaming\Initial"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3764
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:896
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Initial"
      4⤵
      Views/modifies file attributes
      PID:692
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe" & del "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:416
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:836
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
    3⤵
    - Views/modifies file attributes
    PID:1104

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:3796

C:\Windows\SysWOW64\Initial.exe
C:\Windows\SysWOW64\Initial.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:3100
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Initial.exe" & del "C:\Windows\SysWOW64\Initial.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3976
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2068
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Initial.exe"
    3⤵
    - Views/modifies file attributes
    - Drops file in System32 directory
    PID:996

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GetStep.vsdm.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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