wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

Analysis

max time kernel
114s
max time network
120s
platform
windows7_x64
resource
win7
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 exploit wastedlocker persistence discovery

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\PushSend.aifc.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]gwZBEAvEP2FqvUvL47sPJ45/yVBX4Yw3mjqRxsUH0eMigNwvIjy5CGS3jZvjAOCL 4qNHA6uQpH6xp7nlGPojecVwtbE0PQ0AzWqjLF+rhmBximG1pC3sSVp5otVCqnGf wLAA0ArD1ifoCS71IGZr6FKtP7z+pQj862fG9ev4IeRiLvRyjwCTp3ZbebV6i6qp 7Z9ICPUDH+Io9kKf1M+x4DMNFvobtTrDfG4OyvlSflIjOLMIKs7t797AYMPIQBXf IU8n6jN526XpohETzyhEzp/pnSTU7gm3Rewzo4Om6H47yqnpiqvi2dK5TZ46e4Hb geBNBiMp/+f9ym6TIPAHoaZ4v9HyxkyY4Dw2Pwx6zWkWs5A7+LvG3GfAetF1kgf+ 6/dMG7chAu9cfVVOTr2W5rSyncUW9mZiVc96hRIXbFB23DTIMXDU1lnp4b0E2stu mCcASWt4SvEAC6xmDNu4OZFyMJ9Y/hTCOniStc0b+V1zJAgPE0oOl34IX2O2mPxi rDQEp1KbGbjGkaIybaT+aN2i55FQpbxiRsKARv8XXJuQqe5kOuF1Avu+zRSgAEu3 fJPttM5dyIIm7QRUHJSb47GgIoEVbvHepw4RYtQugkWhJSsHg9yrmnugS+ezCWJM 8saesPbsb/xZSNpNI7/keZX0X6ZHCyfax8NvQiqPKo2=[end_key] KEEP IT

Emails

[email protected]

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1508	vssvc.exe
Token: SeRestorePrivilege	1508	vssvc.exe
Token: SeAuditPrivilege	1508	vssvc.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2028	attrib.exe
1280	attrib.exe
1364	attrib.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
528	NOTEPAD.EXE

Drops file in System32 directory 2 IoCs

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

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 364	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1612 wrote to memory of 364	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1612 wrote to memory of 364	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1612 wrote to memory of 364	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 364 wrote to memory of 1052	364	Name:bin	25
PID 364 wrote to memory of 1052	364	Name:bin	25
PID 364 wrote to memory of 1052	364	Name:bin	25
PID 364 wrote to memory of 1052	364	Name:bin	25
PID 364 wrote to memory of 1416	364	Name:bin	29
PID 364 wrote to memory of 1416	364	Name:bin	29
PID 364 wrote to memory of 1416	364	Name:bin	29
PID 364 wrote to memory of 1416	364	Name:bin	29
PID 364 wrote to memory of 1948	364	Name:bin	31
PID 364 wrote to memory of 1948	364	Name:bin	31
PID 364 wrote to memory of 1948	364	Name:bin	31
PID 364 wrote to memory of 1948	364	Name:bin	31
PID 1956 wrote to memory of 1828	1956	Name.exe	35
PID 1956 wrote to memory of 1828	1956	Name.exe	35
PID 1956 wrote to memory of 1828	1956	Name.exe	35
PID 1956 wrote to memory of 1828	1956	Name.exe	35
PID 1828 wrote to memory of 1644	1828	cmd.exe	37
PID 1828 wrote to memory of 1644	1828	cmd.exe	37
PID 1828 wrote to memory of 1644	1828	cmd.exe	37
PID 1828 wrote to memory of 1644	1828	cmd.exe	37
PID 364 wrote to memory of 1628	364	Name:bin	38
PID 364 wrote to memory of 1628	364	Name:bin	38
PID 364 wrote to memory of 1628	364	Name:bin	38
PID 364 wrote to memory of 1628	364	Name:bin	38
PID 1612 wrote to memory of 1640	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1612 wrote to memory of 1640	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1612 wrote to memory of 1640	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1612 wrote to memory of 1640	1612	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1628 wrote to memory of 1632	1628	cmd.exe	42
PID 1628 wrote to memory of 1632	1628	cmd.exe	42
PID 1628 wrote to memory of 1632	1628	cmd.exe	42
PID 1628 wrote to memory of 1632	1628	cmd.exe	42
PID 1640 wrote to memory of 1128	1640	cmd.exe	43
PID 1640 wrote to memory of 1128	1640	cmd.exe	43
PID 1640 wrote to memory of 1128	1640	cmd.exe	43
PID 1640 wrote to memory of 1128	1640	cmd.exe	43
PID 1828 wrote to memory of 2028	1828	cmd.exe	44
PID 1828 wrote to memory of 2028	1828	cmd.exe	44
PID 1828 wrote to memory of 2028	1828	cmd.exe	44
PID 1828 wrote to memory of 2028	1828	cmd.exe	44
PID 1640 wrote to memory of 1364	1640	cmd.exe	46
PID 1640 wrote to memory of 1364	1640	cmd.exe	46
PID 1640 wrote to memory of 1364	1640	cmd.exe	46
PID 1640 wrote to memory of 1364	1640	cmd.exe	46
PID 1628 wrote to memory of 1280	1628	cmd.exe	45
PID 1628 wrote to memory of 1280	1628	cmd.exe	45
PID 1628 wrote to memory of 1280	1628	cmd.exe	45
PID 1628 wrote to memory of 1280	1628	cmd.exe	45

Deletes itself 1 IoCs

pid	Process
1640	cmd.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

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
1052	vssadmin.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1416	takeown.exe
1948	icacls.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\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
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

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1416	takeown.exe
1948	icacls.exe

Executes dropped EXE 2 IoCs

pid	Process
364	Name:bin
1956	Name.exe

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

NTFS ADS 1 IoCs

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

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- NTFS ADS
PID:1612
- C:\Users\Admin\AppData\Roaming\Name:bin
  C:\Users\Admin\AppData\Roaming\Name:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:364
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1052
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Name.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1416
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Name.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1948
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Name" & del "C:\Users\Admin\AppData\Roaming\Name"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1632
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Name"
      4⤵
      Views/modifies file attributes
      PID:1280
- 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
  - Deletes itself
  PID:1640
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1128
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
    3⤵
    - Views/modifies file attributes
    PID:1364

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:1508

C:\Windows\SysWOW64\Name.exe
C:\Windows\SysWOW64\Name.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1956
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Name.exe" & del "C:\Windows\SysWOW64\Name.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1644
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Name.exe"
    3⤵
    - Views/modifies file attributes
    - Drops file in System32 directory
    PID:2028

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\PushSend.aifc.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:528

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

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads