wastedlocker | 887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

Analysis

max time kernel
130s
max time network
130s
platform
windows10_x64
resource
win10
submitted
30-06-2020 13:07

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General

Target

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe
Size

1.1MB
MD5

6b20ef8fb494cc6e455220356de298d0
SHA1

763d356d30e81d1cd15f6bc6a31f96181edb0b8f
SHA256

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d
SHA512

ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Score

10^/10

ransomware persistence discovery exploit wastedlocker

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\FormatRequest.wmf.txt

Family

wastedlocker

Ransom Note

BBA Aviation 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]WKBc2Jtdg8eBI/92fL/IcPyqpDM7ZDUc33WEuLWmgvRvVI6UxpLLmGmm3dugkY+5 o8HXYQTrx1hU/ykMLg4c6ADFH52C4PKXH5o3EU22KJ57hlBKNrj+2gRQ1/uBlTZ2 r/dxlWPf7259NdgB+Br8duD4FJfiDHMt/GnPm9QhZ7KSpEEkNpV6CDaIXHrpNqEr UjfUCIsgVxa4n/5tYCUevauT/OUoHxV+/7EcMfeCeJNXVAnUUMRUV/e0OJ64EAbR OqyJGEPrkS931iaM4WyaPw0Y9npSmutrDTen6q1gFbyLZ5PMaKRzhm/4jMezAARn xfelKR9X8ZnkKwkDHNP0UaFTZfQwl2QyurZFGfGqKI9XybvasI8xRelalr50AFfU SR1/2Dqv3LEPBtaF3Jds460kbKMcH3waZvMznhmGyG348iHcRLP1gdOB2Iaft9fv Ih+uvcWEhth/i55tAamSQoBvrqFYc/jQ2p4haJ7GoHTSrIzYhOzeo0h+YllDpb4N eT81GOaHA3HUMTnlI/D1Wl83sMrDS7rY1JabPlwjuvq+65gbjSqoU/N5WyGQOKdQ cl0rUx7Qp/K3EEeqOlgpuXXsAOsEZBban5DKcR/VVOe1fSkAyZKT12YDkI53lgmU 75DOmD3bO1CQhr2stOcMB5oGesqsXLiboQ/UYCBsyZV=[end_key] KEEP IT

Emails

[email protected]

Signatures

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
3876	vssadmin.exe

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

Drops file in System32 directory 2 IoCs

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

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2088	NOTEPAD.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Hal:bin	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.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\Registry 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\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

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
740	icacls.exe
3496	takeown.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3496	takeown.exe
740	icacls.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3308	attrib.exe
3496	attrib.exe
3876	attrib.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	67
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	67
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	67
PID 3992 wrote to memory of 3876	3992	Hal:bin	68
PID 3992 wrote to memory of 3876	3992	Hal:bin	68
PID 3992 wrote to memory of 3496	3992	Hal:bin	72
PID 3992 wrote to memory of 3496	3992	Hal:bin	72
PID 3992 wrote to memory of 3496	3992	Hal:bin	72
PID 3992 wrote to memory of 740	3992	Hal:bin	74
PID 3992 wrote to memory of 740	3992	Hal:bin	74
PID 3992 wrote to memory of 740	3992	Hal:bin	74
PID 688 wrote to memory of 2524	688	Hal.exe	77
PID 688 wrote to memory of 2524	688	Hal.exe	77
PID 688 wrote to memory of 2524	688	Hal.exe	77
PID 2524 wrote to memory of 2184	2524	cmd.exe	79
PID 2524 wrote to memory of 2184	2524	cmd.exe	79
PID 2524 wrote to memory of 2184	2524	cmd.exe	79
PID 3992 wrote to memory of 1540	3992	Hal:bin	81
PID 3992 wrote to memory of 1540	3992	Hal:bin	81
PID 3992 wrote to memory of 1540	3992	Hal:bin	81
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	83
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	83
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	83
PID 1540 wrote to memory of 3872	1540	cmd.exe	85
PID 1540 wrote to memory of 3872	1540	cmd.exe	85
PID 1540 wrote to memory of 3872	1540	cmd.exe	85
PID 2388 wrote to memory of 3300	2388	cmd.exe	86
PID 2388 wrote to memory of 3300	2388	cmd.exe	86
PID 2388 wrote to memory of 3300	2388	cmd.exe	86
PID 2524 wrote to memory of 3876	2524	cmd.exe	87
PID 2524 wrote to memory of 3876	2524	cmd.exe	87
PID 2524 wrote to memory of 3876	2524	cmd.exe	87
PID 1540 wrote to memory of 3308	1540	cmd.exe	88
PID 1540 wrote to memory of 3308	1540	cmd.exe	88
PID 1540 wrote to memory of 3308	1540	cmd.exe	88
PID 2388 wrote to memory of 3496	2388	cmd.exe	89
PID 2388 wrote to memory of 3496	2388	cmd.exe	89
PID 2388 wrote to memory of 3496	2388	cmd.exe	89

Executes dropped EXE 2 IoCs

pid	Process
3992	Hal:bin
688	Hal.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3956	vssvc.exe
Token: SeRestorePrivilege	3956	vssvc.exe
Token: SeAuditPrivilege	3956	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe
"C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Roaming\Hal:bin
  C:\Users\Admin\AppData\Roaming\Hal:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:3992
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3876
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Hal.exe
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:3496
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Hal.exe /reset
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:740
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Hal" & del "C:\Users\Admin\AppData\Roaming\Hal"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1540
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:3872
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Hal"
      4⤵
      Views/modifies file attributes
      PID:3308
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe" & del "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:3300
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
    3⤵
    - Views/modifies file attributes
    PID:3496

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:3956

C:\Windows\SysWOW64\Hal.exe
C:\Windows\SysWOW64\Hal.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:688
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Hal.exe" & del "C:\Windows\SysWOW64\Hal.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2184
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Hal.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3876

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\FormatRequest.wmf.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2088

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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