wastedlocker | db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2

Resubmissions

16-03-2021 14:56

210316-kx75lxvtys 10

14-03-2021 20:10

210314-cba5cgrcvn 10

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7v20201028
submitted
14-03-2021 20:10

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General

Target

db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe
Size

1.2MB
MD5

82d841869e912a772413bb37f30307b0
SHA1

b75ab0170c1206c345d2fb82506e816098328ee8
SHA256

db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2
SHA512

48078796a9aa03e685bebd14539586c099f30c3a1e18639d4acb810dc3bbb0dc14b09066797e79c34dcd91a120b08537aadf228585e226101384ade3fe2252c6

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/0x00040000000130e4-6.dat	cryptone
behavioral1/files/0x00040000000130e4-13.dat	cryptone
behavioral1/files/0x0005000000005668-15.dat	cryptone
behavioral1/files/0x0005000000005668-17.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
2020	Extension:bin
1676	Extension.exe

Modifies extensions of user files 21 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\UndoBackup.png.seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\UnlockSuspend.tif.howto_seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\RedoPublish.crw.howto_seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\RedoPublish.crw.seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\ResumeHide.crw => C:\Users\Admin\Pictures\ResumeHide.crw.seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\UndoBackup.png.howto_seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\ResumeHide.crw.howto_seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\ResizeDisable.png.seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\CloseNew.crw.howto_seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\CloseNew.crw => C:\Users\Admin\Pictures\CloseNew.crw.seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\ExitSet.tiff => C:\Users\Admin\Pictures\ExitSet.tiff.seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\ResizeDisable.png.howto_seccrypt	Extension.exe
File created	C:\Users\Admin\Pictures\ExitSet.tiff.howto_seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\ResizeDisable.png => C:\Users\Admin\Pictures\ResizeDisable.png.seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\UndoBackup.png => C:\Users\Admin\Pictures\UndoBackup.png.seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\UnlockSuspend.tif => C:\Users\Admin\Pictures\UnlockSuspend.tif.seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockSuspend.tif.seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\CloseNew.crw.seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\ExitSet.tiff.seccrypt	Extension.exe
File renamed	C:\Users\Admin\Pictures\RedoPublish.crw => C:\Users\Admin\Pictures\RedoPublish.crw.seccrypt	Extension.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeHide.crw.seccrypt	Extension.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1568	takeown.exe
1524	icacls.exe

Deletes itself 1 IoCs

pid	Process
340	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe
792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1568	takeown.exe
1524	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Extension.exe	Extension:bin
File opened for modification	C:\Windows\SysWOW64\Extension.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
2000	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Extension:bin	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1800	vssvc.exe
Token: SeRestorePrivilege	1800	vssvc.exe
Token: SeAuditPrivilege	1800	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 2020	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	26
PID 792 wrote to memory of 2020	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	26
PID 792 wrote to memory of 2020	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	26
PID 792 wrote to memory of 2020	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	26
PID 2020 wrote to memory of 2000	2020	Extension:bin	27
PID 2020 wrote to memory of 2000	2020	Extension:bin	27
PID 2020 wrote to memory of 2000	2020	Extension:bin	27
PID 2020 wrote to memory of 2000	2020	Extension:bin	27
PID 2020 wrote to memory of 1568	2020	Extension:bin	31
PID 2020 wrote to memory of 1568	2020	Extension:bin	31
PID 2020 wrote to memory of 1568	2020	Extension:bin	31
PID 2020 wrote to memory of 1568	2020	Extension:bin	31
PID 2020 wrote to memory of 1524	2020	Extension:bin	33
PID 2020 wrote to memory of 1524	2020	Extension:bin	33
PID 2020 wrote to memory of 1524	2020	Extension:bin	33
PID 2020 wrote to memory of 1524	2020	Extension:bin	33
PID 1676 wrote to memory of 300	1676	Extension.exe	37
PID 1676 wrote to memory of 300	1676	Extension.exe	37
PID 1676 wrote to memory of 300	1676	Extension.exe	37
PID 1676 wrote to memory of 300	1676	Extension.exe	37
PID 300 wrote to memory of 936	300	cmd.exe	39
PID 300 wrote to memory of 936	300	cmd.exe	39
PID 300 wrote to memory of 936	300	cmd.exe	39
PID 300 wrote to memory of 936	300	cmd.exe	39
PID 2020 wrote to memory of 968	2020	Extension:bin	40
PID 2020 wrote to memory of 968	2020	Extension:bin	40
PID 2020 wrote to memory of 968	2020	Extension:bin	40
PID 2020 wrote to memory of 968	2020	Extension:bin	40
PID 792 wrote to memory of 340	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	42
PID 792 wrote to memory of 340	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	42
PID 792 wrote to memory of 340	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	42
PID 792 wrote to memory of 340	792	db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe	42
PID 968 wrote to memory of 1108	968	cmd.exe	44
PID 968 wrote to memory of 1108	968	cmd.exe	44
PID 968 wrote to memory of 1108	968	cmd.exe	44
PID 968 wrote to memory of 1108	968	cmd.exe	44
PID 340 wrote to memory of 112	340	cmd.exe	45
PID 340 wrote to memory of 112	340	cmd.exe	45
PID 340 wrote to memory of 112	340	cmd.exe	45
PID 340 wrote to memory of 112	340	cmd.exe	45
PID 300 wrote to memory of 1340	300	cmd.exe	49
PID 300 wrote to memory of 1340	300	cmd.exe	49
PID 300 wrote to memory of 1340	300	cmd.exe	49
PID 300 wrote to memory of 1340	300	cmd.exe	49
PID 968 wrote to memory of 896	968	cmd.exe	50
PID 968 wrote to memory of 896	968	cmd.exe	50
PID 968 wrote to memory of 896	968	cmd.exe	50
PID 968 wrote to memory of 896	968	cmd.exe	50
PID 340 wrote to memory of 204	340	cmd.exe	51
PID 340 wrote to memory of 204	340	cmd.exe	51
PID 340 wrote to memory of 204	340	cmd.exe	51
PID 340 wrote to memory of 204	340	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1340	attrib.exe
896	attrib.exe
204	attrib.exe

C:\Users\Admin\AppData\Local\Temp\db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe
"C:\Users\Admin\AppData\Local\Temp\db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:792
- C:\Users\Admin\AppData\Roaming\Extension:bin
  C:\Users\Admin\AppData\Roaming\Extension:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2000
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Extension.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1568
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Extension.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1524
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Extension" & del "C:\Users\Admin\AppData\Roaming\Extension"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:968
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1108
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Extension"
      4⤵
      Views/modifies file attributes
      PID:896
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:340
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:112
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\db665f26dbc4ca92d326f2cb98faafb9e84d404346b201cd88bec91ce4206bb2.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:204

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1800

C:\Windows\SysWOW64\Extension.exe
C:\Windows\SysWOW64\Extension.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Extension.exe" & del "C:\Windows\SysWOW64\Extension.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:300
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:936
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Extension.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1340

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/792-8-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/792-7-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/792-2-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads