wastedlocker | 85f391ecd480711401f6da2f371156f995dd5cff7580f37791e79e62b91fd9eb

Analysis

max time kernel
143s
max time network
149s
platform
windows7_x64
resource
win7
submitted
04-07-2020 03:56

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General

Target

gstabl72.exe
Size

848KB
MD5

3208a14c9bad334e331febe00f1e9734
SHA1

809fbd450e1a484a5af4ec05c345b2a7072723e7
SHA256

85f391ecd480711401f6da2f371156f995dd5cff7580f37791e79e62b91fd9eb
SHA512

b1460826b0a15e9cf752f001426ae6c9fffe96d01d7ab2802d0843b2c51f3dc1590c9c1f80e26ed9a751e7ac59f584fde4cb937841d5b4ea51a1883302da4029

Score

10^/10

ransomware persistence discovery exploit wastedlocker

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Order.exe	Order:bin
File opened for modification	C:\Windows\SysWOW64\Order.exe	attrib.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
2040	attrib.exe
1496	attrib.exe
1560	attrib.exe

Loads dropped DLL 2 IoCs

pid	Process
608	gstabl72.exe
608	gstabl72.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 608 wrote to memory of 1376	608	gstabl72.exe	24
PID 608 wrote to memory of 1376	608	gstabl72.exe	24
PID 608 wrote to memory of 1376	608	gstabl72.exe	24
PID 608 wrote to memory of 1376	608	gstabl72.exe	24
PID 1376 wrote to memory of 1428	1376	Order:bin	25
PID 1376 wrote to memory of 1428	1376	Order:bin	25
PID 1376 wrote to memory of 1428	1376	Order:bin	25
PID 1376 wrote to memory of 1428	1376	Order:bin	25
PID 1376 wrote to memory of 1680	1376	Order:bin	29
PID 1376 wrote to memory of 1680	1376	Order:bin	29
PID 1376 wrote to memory of 1680	1376	Order:bin	29
PID 1376 wrote to memory of 1680	1376	Order:bin	29
PID 1376 wrote to memory of 1816	1376	Order:bin	31
PID 1376 wrote to memory of 1816	1376	Order:bin	31
PID 1376 wrote to memory of 1816	1376	Order:bin	31
PID 1376 wrote to memory of 1816	1376	Order:bin	31
PID 1764 wrote to memory of 1836	1764	Order.exe	35
PID 1764 wrote to memory of 1836	1764	Order.exe	35
PID 1764 wrote to memory of 1836	1764	Order.exe	35
PID 1764 wrote to memory of 1836	1764	Order.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 1376 wrote to memory of 1576	1376	Order:bin	38
PID 1376 wrote to memory of 1576	1376	Order:bin	38
PID 1376 wrote to memory of 1576	1376	Order:bin	38
PID 1376 wrote to memory of 1576	1376	Order:bin	38
PID 608 wrote to memory of 1636	608	gstabl72.exe	40
PID 608 wrote to memory of 1636	608	gstabl72.exe	40
PID 608 wrote to memory of 1636	608	gstabl72.exe	40
PID 608 wrote to memory of 1636	608	gstabl72.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 2040	1836	cmd.exe	45
PID 1836 wrote to memory of 2040	1836	cmd.exe	45
PID 1836 wrote to memory of 2040	1836	cmd.exe	45
PID 1836 wrote to memory of 2040	1836	cmd.exe	45
PID 1636 wrote to memory of 1496	1636	cmd.exe	46
PID 1636 wrote to memory of 1496	1636	cmd.exe	46
PID 1636 wrote to memory of 1496	1636	cmd.exe	46
PID 1636 wrote to memory of 1496	1636	cmd.exe	46
PID 1576 wrote to memory of 1560	1576	cmd.exe	47
PID 1576 wrote to memory of 1560	1576	cmd.exe	47
PID 1576 wrote to memory of 1560	1576	cmd.exe	47
PID 1576 wrote to memory of 1560	1576	cmd.exe	47

Executes dropped EXE 2 IoCs

pid	Process
1376	Order:bin
1764	Order.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1680	takeown.exe
1816	icacls.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Order:bin	gstabl72.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1680	takeown.exe
1816	icacls.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
1428	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1000	vssvc.exe
Token: SeRestorePrivilege	1000	vssvc.exe
Token: SeAuditPrivilege	1000	vssvc.exe

Deletes itself 1 IoCs

pid	Process
1636	cmd.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

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\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization 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\Registry Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\gstabl72.exe
"C:\Users\Admin\AppData\Local\Temp\gstabl72.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- NTFS ADS
PID:608
- C:\Users\Admin\AppData\Roaming\Order:bin
  C:\Users\Admin\AppData\Roaming\Order:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:1376
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1428
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Order.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1680
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Order.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1816
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Order" & del "C:\Users\Admin\AppData\Roaming\Order"
    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\Order"
      4⤵
      Views/modifies file attributes
      PID:1560
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\gstabl72.exe" & del "C:\Users\Admin\AppData\Local\Temp\gstabl72.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\gstabl72.exe"
    3⤵
    - Views/modifies file attributes
    PID:1496

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:1000

C:\Windows\SysWOW64\Order.exe
C:\Windows\SysWOW64\Order.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1764
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Order.exe" & del "C:\Windows\SysWOW64\Order.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\Order.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:2040

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1916

C:\Windows\system32\notepad.exe
"C:\Windows\system32\notepad.exe"
1⤵
PID:208

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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