wastedlocker | 905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a

Analysis

max time kernel
115s
max time network
121s
platform
windows7_x64
resource
win7
submitted
26-07-2020 07:45

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General

Target

Interfaces.bin.exe
Size

1.2MB
MD5

2cc4534b0dd0e1c8d5b89644274a10c1
SHA1

735ee2c15c0b7172f65d39f0fd33b9186ee69653
SHA256

905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a
SHA512

a842b2d171aa6efa1b391d5d0f84663e78021b485555e2bf10a5e589d8652057f5abbd88e1a5ec628b714692ec5d63c3172894aa7846d5897e87d99dad67e2b8

Score

10^/10

persistence discovery exploit ransomware wastedlocker

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1004	vssvc.exe
Token: SeRestorePrivilege	1004	vssvc.exe
Token: SeAuditPrivilege	1004	vssvc.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1500	takeown.exe
1792	icacls.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 608 wrote to memory of 1184	608	Interfaces.bin.exe	24
PID 608 wrote to memory of 1184	608	Interfaces.bin.exe	24
PID 608 wrote to memory of 1184	608	Interfaces.bin.exe	24
PID 608 wrote to memory of 1184	608	Interfaces.bin.exe	24
PID 1184 wrote to memory of 1420	1184	Group:bin	25
PID 1184 wrote to memory of 1420	1184	Group:bin	25
PID 1184 wrote to memory of 1420	1184	Group:bin	25
PID 1184 wrote to memory of 1420	1184	Group:bin	25
PID 1184 wrote to memory of 1500	1184	Group:bin	29
PID 1184 wrote to memory of 1500	1184	Group:bin	29
PID 1184 wrote to memory of 1500	1184	Group:bin	29
PID 1184 wrote to memory of 1500	1184	Group:bin	29
PID 1184 wrote to memory of 1792	1184	Group:bin	31
PID 1184 wrote to memory of 1792	1184	Group:bin	31
PID 1184 wrote to memory of 1792	1184	Group:bin	31
PID 1184 wrote to memory of 1792	1184	Group:bin	31
PID 1768 wrote to memory of 1836	1768	Group.exe	35
PID 1768 wrote to memory of 1836	1768	Group.exe	35
PID 1768 wrote to memory of 1836	1768	Group.exe	35
PID 1768 wrote to memory of 1836	1768	Group.exe	35
PID 1836 wrote to memory of 1632	1836	cmd.exe	37
PID 1836 wrote to memory of 1632	1836	cmd.exe	37
PID 1836 wrote to memory of 1632	1836	cmd.exe	37
PID 1836 wrote to memory of 1632	1836	cmd.exe	37
PID 1184 wrote to memory of 1576	1184	Group:bin	38
PID 1184 wrote to memory of 1576	1184	Group:bin	38
PID 1184 wrote to memory of 1576	1184	Group:bin	38
PID 1184 wrote to memory of 1576	1184	Group:bin	38
PID 608 wrote to memory of 1636	608	Interfaces.bin.exe	40
PID 608 wrote to memory of 1636	608	Interfaces.bin.exe	40
PID 608 wrote to memory of 1636	608	Interfaces.bin.exe	40
PID 608 wrote to memory of 1636	608	Interfaces.bin.exe	40
PID 1576 wrote to memory of 1568	1576	cmd.exe	42
PID 1576 wrote to memory of 1568	1576	cmd.exe	42
PID 1576 wrote to memory of 1568	1576	cmd.exe	42
PID 1576 wrote to memory of 1568	1576	cmd.exe	42
PID 1636 wrote to memory of 1904	1636	cmd.exe	43
PID 1636 wrote to memory of 1904	1636	cmd.exe	43
PID 1636 wrote to memory of 1904	1636	cmd.exe	43
PID 1636 wrote to memory of 1904	1636	cmd.exe	43
PID 1836 wrote to memory of 1932	1836	cmd.exe	44
PID 1836 wrote to memory of 1932	1836	cmd.exe	44
PID 1836 wrote to memory of 1932	1836	cmd.exe	44
PID 1836 wrote to memory of 1932	1836	cmd.exe	44
PID 1576 wrote to memory of 1896	1576	cmd.exe	45
PID 1576 wrote to memory of 1896	1576	cmd.exe	45
PID 1576 wrote to memory of 1896	1576	cmd.exe	45
PID 1576 wrote to memory of 1896	1576	cmd.exe	45
PID 1636 wrote to memory of 1968	1636	cmd.exe	46
PID 1636 wrote to memory of 1968	1636	cmd.exe	46
PID 1636 wrote to memory of 1968	1636	cmd.exe	46
PID 1636 wrote to memory of 1968	1636	cmd.exe	46

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
1420	vssadmin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1500	takeown.exe
1792	icacls.exe

NTFS ADS 1 IoCs

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

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

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1932	attrib.exe
1896	attrib.exe
1968	attrib.exe

Loads dropped DLL 2 IoCs

pid	Process
608	Interfaces.bin.exe
608	Interfaces.bin.exe

Executes dropped EXE 2 IoCs

pid	Process
1184	Group:bin
1768	Group.exe

Deletes itself 1 IoCs

pid	Process
1636	cmd.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\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5}	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	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

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

File Deletion
T1107

Inhibit System Recovery
T1490

Drops file in System32 directory 2 IoCs

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

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ConfirmResume.tif.garminwasted	Group.exe
File created	C:\Users\Admin\Pictures\SkipUpdate.png.garminwasted_info	Group.exe
File renamed	C:\Users\Admin\Pictures\SkipUpdate.png => C:\Users\Admin\Pictures\SkipUpdate.png.garminwasted	Group.exe
File opened for modification	C:\Users\Admin\Pictures\SkipUpdate.png.garminwasted	Group.exe
File created	C:\Users\Admin\Pictures\ConfirmResume.tif.garminwasted_info	Group.exe
File renamed	C:\Users\Admin\Pictures\ConfirmResume.tif => C:\Users\Admin\Pictures\ConfirmResume.tif.garminwasted	Group.exe

C:\Users\Admin\AppData\Local\Temp\Interfaces.bin.exe
"C:\Users\Admin\AppData\Local\Temp\Interfaces.bin.exe"
1⤵
- Suspicious use of WriteProcessMemory
- NTFS ADS
- Loads dropped DLL
PID:608
- C:\Users\Admin\AppData\Roaming\Group:bin
  C:\Users\Admin\AppData\Roaming\Group:bin -r
  2⤵
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:1184
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1420
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Group.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1500
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Group.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1792
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Group" & del "C:\Users\Admin\AppData\Roaming\Group"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1576
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1568
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Group"
      4⤵
      Views/modifies file attributes
      PID:1896
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\Interfaces.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\Interfaces.bin.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Deletes itself
  PID:1636
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1904
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\Interfaces.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:1968

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:1004

C:\Windows\SysWOW64\Group.exe
C:\Windows\SysWOW64\Group.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
- Modifies extensions of user files
PID:1768
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Group.exe" & del "C:\Windows\SysWOW64\Group.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1632
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Group.exe"
    3⤵
    - Views/modifies file attributes
    - Drops file in System32 directory
    PID:1932

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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