3505bc92994bc33ab71bfb458177e0b8c34c7d9aed7d75f23df261d08417a168

Analysis

max time kernel
75s
max time network
137s
platform
windows10_x64
resource
win10
submitted
26/06/2020, 13:11

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General

Target

sample.exe
Size

56KB
MD5

ecb00e9a61f99a7d4c90723294986bbc
SHA1

be59c867da75e2a66b8c2519e950254f817cd4ad
SHA256

8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80
SHA512

9dee79827d865de41a63962b419eed7e1f9610ff27f00f8b7b2b9f51e905d5db907d310da590d8f1a11ac88e549373edf39bffdb44d1b205728f1b5e0a43aa5e

Score

9^/10

ransomware persistence discovery exploit

Malware Config

Signatures

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
3200	vssadmin.exe

Drops file in System32 directory 2 IoCs

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

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3200	attrib.exe
688	attrib.exe
1660	attrib.exe

NTFS ADS 1 IoCs

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

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 3836	3412	sample.exe	67
PID 3412 wrote to memory of 3836	3412	sample.exe	67
PID 3412 wrote to memory of 3836	3412	sample.exe	67
PID 3836 wrote to memory of 3200	3836	Launch:bin	68
PID 3836 wrote to memory of 3200	3836	Launch:bin	68
PID 3836 wrote to memory of 1812	3836	Launch:bin	72
PID 3836 wrote to memory of 1812	3836	Launch:bin	72
PID 3836 wrote to memory of 1812	3836	Launch:bin	72
PID 3836 wrote to memory of 732	3836	Launch:bin	74
PID 3836 wrote to memory of 732	3836	Launch:bin	74
PID 3836 wrote to memory of 732	3836	Launch:bin	74
PID 3040 wrote to memory of 2788	3040	Launch.exe	77
PID 3040 wrote to memory of 2788	3040	Launch.exe	77
PID 3040 wrote to memory of 2788	3040	Launch.exe	77
PID 2788 wrote to memory of 3912	2788	cmd.exe	79
PID 2788 wrote to memory of 3912	2788	cmd.exe	79
PID 2788 wrote to memory of 3912	2788	cmd.exe	79
PID 3836 wrote to memory of 3692	3836	Launch:bin	81
PID 3836 wrote to memory of 3692	3836	Launch:bin	81
PID 3836 wrote to memory of 3692	3836	Launch:bin	81
PID 3412 wrote to memory of 3764	3412	sample.exe	83
PID 3412 wrote to memory of 3764	3412	sample.exe	83
PID 3412 wrote to memory of 3764	3412	sample.exe	83
PID 3692 wrote to memory of 3608	3692	cmd.exe	85
PID 3692 wrote to memory of 3608	3692	cmd.exe	85
PID 3692 wrote to memory of 3608	3692	cmd.exe	85
PID 3764 wrote to memory of 256	3764	cmd.exe	86
PID 3764 wrote to memory of 256	3764	cmd.exe	86
PID 3764 wrote to memory of 256	3764	cmd.exe	86
PID 2788 wrote to memory of 3200	2788	cmd.exe	87
PID 2788 wrote to memory of 3200	2788	cmd.exe	87
PID 2788 wrote to memory of 3200	2788	cmd.exe	87
PID 3692 wrote to memory of 688	3692	cmd.exe	88
PID 3692 wrote to memory of 688	3692	cmd.exe	88
PID 3692 wrote to memory of 688	3692	cmd.exe	88
PID 3764 wrote to memory of 1660	3764	cmd.exe	89
PID 3764 wrote to memory of 1660	3764	cmd.exe	89
PID 3764 wrote to memory of 1660	3764	cmd.exe	89

Executes dropped EXE 2 IoCs

pid	Process
3836	Launch:bin
3040	Launch.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1812	takeown.exe
732	icacls.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3892	vssvc.exe
Token: SeRestorePrivilege	3892	vssvc.exe
Token: SeAuditPrivilege	3892	vssvc.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

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1812	takeown.exe
732	icacls.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Users\Admin\AppData\Roaming\Launch:bin
  C:\Users\Admin\AppData\Roaming\Launch:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:3836
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3200
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Launch.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1812
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Launch.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:732
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Launch" & del "C:\Users\Admin\AppData\Roaming\Launch"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3692
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:3608
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Launch"
      4⤵
      Views/modifies file attributes
      PID:688
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\sample.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3764
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:256
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\sample.exe"
    3⤵
    - Views/modifies file attributes
    PID:1660

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:3892

C:\Windows\SysWOW64\Launch.exe
C:\Windows\SysWOW64\Launch.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Launch.exe" & del "C:\Windows\SysWOW64\Launch.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:3912
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Launch.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3200

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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