wastedlocker | ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3

Analysis

max time kernel
23s
max time network
114s
platform
windows7_x64
resource
win7v20210410
submitted
26/07/2021, 12:42

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General

Target

ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe
Size

951KB
MD5

edbf07eaca4fff5f2d3f045567a9dc6f
SHA1

9292fa66c917bfa47e8012d302a69bec48e9b98c
SHA256

ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3
SHA512

731214358d4fcecdafe0d386a305a130185727b20704e6251e37ac5feb35eff8f3f31d8c740954feb57c699cc5975c3bb50fac5c5202c5933c4fe0dfd06bc8e6

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

resource	yara_rule
behavioral1/files/0x0004000000013104-66.dat	cryptone
behavioral1/files/0x0004000000013104-69.dat	cryptone
behavioral1/files/0x0005000000005668-71.dat	cryptone
behavioral1/files/0x0005000000005668-73.dat	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

pid	Process
1988	Secure:bin
1640	Secure.exe

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\UndoRead.tiff.d2lwasted	Secure.exe
File created	C:\Users\Admin\Pictures\MeasureUpdate.tiff.d2lwasted_info	Secure.exe
File renamed	C:\Users\Admin\Pictures\MeasureUpdate.tiff => C:\Users\Admin\Pictures\MeasureUpdate.tiff.d2lwasted	Secure.exe
File opened for modification	C:\Users\Admin\Pictures\ExportReceive.tiff.d2lwasted	Secure.exe
File opened for modification	C:\Users\Admin\Pictures\MeasureUpdate.tiff.d2lwasted	Secure.exe
File created	C:\Users\Admin\Pictures\UndoRead.tiff.d2lwasted_info	Secure.exe
File renamed	C:\Users\Admin\Pictures\UndoRead.tiff => C:\Users\Admin\Pictures\UndoRead.tiff.d2lwasted	Secure.exe
File created	C:\Users\Admin\Pictures\ExportReceive.tiff.d2lwasted_info	Secure.exe
File renamed	C:\Users\Admin\Pictures\ExportReceive.tiff => C:\Users\Admin\Pictures\ExportReceive.tiff.d2lwasted	Secure.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1300	takeown.exe
1144	icacls.exe

Deletes itself 1 IoCs

pid	Process
516	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe
308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1300	takeown.exe
1144	icacls.exe

Drops file in System32 directory 2 IoCs

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

pid	Process
1192	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Secure:bin	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1980	vssvc.exe
Token: SeRestorePrivilege	1980	vssvc.exe
Token: SeAuditPrivilege	1980	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 308 wrote to memory of 1988	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	26
PID 308 wrote to memory of 1988	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	26
PID 308 wrote to memory of 1988	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	26
PID 308 wrote to memory of 1988	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	26
PID 1988 wrote to memory of 1192	1988	Secure:bin	27
PID 1988 wrote to memory of 1192	1988	Secure:bin	27
PID 1988 wrote to memory of 1192	1988	Secure:bin	27
PID 1988 wrote to memory of 1192	1988	Secure:bin	27
PID 1988 wrote to memory of 1300	1988	Secure:bin	31
PID 1988 wrote to memory of 1300	1988	Secure:bin	31
PID 1988 wrote to memory of 1300	1988	Secure:bin	31
PID 1988 wrote to memory of 1300	1988	Secure:bin	31
PID 1988 wrote to memory of 1144	1988	Secure:bin	33
PID 1988 wrote to memory of 1144	1988	Secure:bin	33
PID 1988 wrote to memory of 1144	1988	Secure:bin	33
PID 1988 wrote to memory of 1144	1988	Secure:bin	33
PID 1640 wrote to memory of 1840	1640	Secure.exe	37
PID 1640 wrote to memory of 1840	1640	Secure.exe	37
PID 1640 wrote to memory of 1840	1640	Secure.exe	37
PID 1640 wrote to memory of 1840	1640	Secure.exe	37
PID 1840 wrote to memory of 1124	1840	cmd.exe	39
PID 1840 wrote to memory of 1124	1840	cmd.exe	39
PID 1840 wrote to memory of 1124	1840	cmd.exe	39
PID 1840 wrote to memory of 1124	1840	cmd.exe	39
PID 1988 wrote to memory of 928	1988	Secure:bin	41
PID 1988 wrote to memory of 928	1988	Secure:bin	41
PID 1988 wrote to memory of 928	1988	Secure:bin	41
PID 1988 wrote to memory of 928	1988	Secure:bin	41
PID 308 wrote to memory of 516	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	43
PID 308 wrote to memory of 516	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	43
PID 308 wrote to memory of 516	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	43
PID 308 wrote to memory of 516	308	ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe	43
PID 928 wrote to memory of 672	928	cmd.exe	44
PID 928 wrote to memory of 672	928	cmd.exe	44
PID 928 wrote to memory of 672	928	cmd.exe	44
PID 928 wrote to memory of 672	928	cmd.exe	44
PID 516 wrote to memory of 1552	516	cmd.exe	46
PID 516 wrote to memory of 1552	516	cmd.exe	46
PID 516 wrote to memory of 1552	516	cmd.exe	46
PID 516 wrote to memory of 1552	516	cmd.exe	46
PID 1840 wrote to memory of 1760	1840	cmd.exe	49
PID 1840 wrote to memory of 1760	1840	cmd.exe	49
PID 1840 wrote to memory of 1760	1840	cmd.exe	49
PID 1840 wrote to memory of 1760	1840	cmd.exe	49
PID 928 wrote to memory of 1804	928	cmd.exe	50
PID 928 wrote to memory of 1804	928	cmd.exe	50
PID 928 wrote to memory of 1804	928	cmd.exe	50
PID 928 wrote to memory of 1804	928	cmd.exe	50
PID 516 wrote to memory of 1732	516	cmd.exe	51
PID 516 wrote to memory of 1732	516	cmd.exe	51
PID 516 wrote to memory of 1732	516	cmd.exe	51
PID 516 wrote to memory of 1732	516	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1760	attrib.exe
1804	attrib.exe
1732	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe
"C:\Users\Admin\AppData\Local\Temp\ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:308
- C:\Users\Admin\AppData\Roaming\Secure:bin
  C:\Users\Admin\AppData\Roaming\Secure:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1192
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Secure.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1300
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Secure.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1144
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Secure" & del "C:\Users\Admin\AppData\Roaming\Secure"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:928
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:672
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Secure"
      4⤵
      Views/modifies file attributes
      PID:1804
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1552
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\ed0632acb266a4ec3f51dd803c8025bccd654e53c64eb613e203c590897079b3.sample.exe"
    3⤵
    - Views/modifies file attributes
    PID:1732

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1980

C:\Windows\SysWOW64\Secure.exe
C:\Windows\SysWOW64\Secure.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Secure.exe" & del "C:\Windows\SysWOW64\Secure.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1840
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1124
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Secure.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

memory/308-61-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/308-62-0x0000000000400000-0x00000000004EF000-memory.dmp

Filesize
956KB

Download
memory/308-60-0x0000000075A31000-0x0000000075A33000-memory.dmp

Filesize
8KB

Download
memory/1640-75-0x0000000000400000-0x00000000004EF000-memory.dmp

Filesize
956KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads