wastedlocker | 7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559

Analysis

max time kernel
22s
max time network
18s
platform
windows7_x64
resource
win7v20201028
submitted
03-11-2020 14:20

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General

Target

7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe
Size

58KB
MD5

432a1dd2d40e5b0f6385096847efd3b2
SHA1

f5735932baf8b04a8e1ca622ff06d37a9db29d9f
SHA256

7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559
SHA512

0d713fa5ca52322ea2295d305adbcecc83aaf6b46024987a483112fbbc4c47db6695d0e019b7e68f1a8fe53ff4cbbb4010a981a3fa91eb9be42ebccc75118c1e

Score

10^/10

wastedlocker discovery exploit persistence ransomware

Malware Config

Signatures

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker
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
1344	Snmp:bin
1724	Snmp.exe

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\UpdateGrant.crw => C:\Users\Admin\Pictures\UpdateGrant.crw.garminwasted	Snmp.exe
File opened for modification	C:\Users\Admin\Pictures\UpdateGrant.crw.garminwasted	Snmp.exe
File created	C:\Users\Admin\Pictures\MergeFormat.raw.garminwasted_info	Snmp.exe
File renamed	C:\Users\Admin\Pictures\MergeFormat.raw => C:\Users\Admin\Pictures\MergeFormat.raw.garminwasted	Snmp.exe
File opened for modification	C:\Users\Admin\Pictures\MergeFormat.raw.garminwasted	Snmp.exe
File created	C:\Users\Admin\Pictures\UpdateGrant.crw.garminwasted_info	Snmp.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1632	takeown.exe
644	icacls.exe

Deletes itself 1 IoCs

pid	Process
616	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe
1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1632	takeown.exe
644	icacls.exe

Drops file in System32 directory 2 IoCs

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

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
1448	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Snmp:bin	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1144	vssvc.exe
Token: SeRestorePrivilege	1144	vssvc.exe
Token: SeAuditPrivilege	1144	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 1344	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	26
PID 1892 wrote to memory of 1344	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	26
PID 1892 wrote to memory of 1344	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	26
PID 1892 wrote to memory of 1344	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	26
PID 1344 wrote to memory of 1448	1344	Snmp:bin	27
PID 1344 wrote to memory of 1448	1344	Snmp:bin	27
PID 1344 wrote to memory of 1448	1344	Snmp:bin	27
PID 1344 wrote to memory of 1448	1344	Snmp:bin	27
PID 1344 wrote to memory of 1632	1344	Snmp:bin	31
PID 1344 wrote to memory of 1632	1344	Snmp:bin	31
PID 1344 wrote to memory of 1632	1344	Snmp:bin	31
PID 1344 wrote to memory of 1632	1344	Snmp:bin	31
PID 1344 wrote to memory of 644	1344	Snmp:bin	33
PID 1344 wrote to memory of 644	1344	Snmp:bin	33
PID 1344 wrote to memory of 644	1344	Snmp:bin	33
PID 1344 wrote to memory of 644	1344	Snmp:bin	33
PID 1724 wrote to memory of 396	1724	Snmp.exe	37
PID 1724 wrote to memory of 396	1724	Snmp.exe	37
PID 1724 wrote to memory of 396	1724	Snmp.exe	37
PID 1724 wrote to memory of 396	1724	Snmp.exe	37
PID 396 wrote to memory of 576	396	cmd.exe	39
PID 396 wrote to memory of 576	396	cmd.exe	39
PID 396 wrote to memory of 576	396	cmd.exe	39
PID 396 wrote to memory of 576	396	cmd.exe	39
PID 1344 wrote to memory of 852	1344	Snmp:bin	40
PID 1344 wrote to memory of 852	1344	Snmp:bin	40
PID 1344 wrote to memory of 852	1344	Snmp:bin	40
PID 1344 wrote to memory of 852	1344	Snmp:bin	40
PID 1892 wrote to memory of 616	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	41
PID 1892 wrote to memory of 616	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	41
PID 1892 wrote to memory of 616	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	41
PID 1892 wrote to memory of 616	1892	7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe	41
PID 852 wrote to memory of 848	852	cmd.exe	44
PID 852 wrote to memory of 848	852	cmd.exe	44
PID 852 wrote to memory of 848	852	cmd.exe	44
PID 852 wrote to memory of 848	852	cmd.exe	44
PID 616 wrote to memory of 1548	616	cmd.exe	45
PID 616 wrote to memory of 1548	616	cmd.exe	45
PID 616 wrote to memory of 1548	616	cmd.exe	45
PID 616 wrote to memory of 1548	616	cmd.exe	45
PID 396 wrote to memory of 1848	396	cmd.exe	49
PID 396 wrote to memory of 1848	396	cmd.exe	49
PID 396 wrote to memory of 1848	396	cmd.exe	49
PID 396 wrote to memory of 1848	396	cmd.exe	49
PID 852 wrote to memory of 1844	852	cmd.exe	50
PID 852 wrote to memory of 1844	852	cmd.exe	50
PID 852 wrote to memory of 1844	852	cmd.exe	50
PID 852 wrote to memory of 1844	852	cmd.exe	50
PID 616 wrote to memory of 1780	616	cmd.exe	51
PID 616 wrote to memory of 1780	616	cmd.exe	51
PID 616 wrote to memory of 1780	616	cmd.exe	51
PID 616 wrote to memory of 1780	616	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1844	attrib.exe
1780	attrib.exe
1848	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe
"C:\Users\Admin\AppData\Local\Temp\7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Users\Admin\AppData\Roaming\Snmp:bin
  C:\Users\Admin\AppData\Roaming\Snmp:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1344
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1448
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Snmp.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1632
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Snmp.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:644
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Snmp" & del "C:\Users\Admin\AppData\Roaming\Snmp"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:852
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:848
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Snmp"
      4⤵
      Views/modifies file attributes
      PID:1844
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:616
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1548
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\7de425238719622bf2b2150591631b0a71d6a5dade419a4e67b9bdbfa272b559.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:1780

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1144

C:\Windows\SysWOW64\Snmp.exe
C:\Windows\SysWOW64\Snmp.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Snmp.exe" & del "C:\Windows\SysWOW64\Snmp.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:576
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Snmp.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1848

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

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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