0f8de2a116f590ace3a818302d2531af9f3c972816638c92773048c640807acc

General

Target

Reader.lnk
Size

2KB
MD5

66bb9363e23c7ef2d16c89cd654b491e
SHA1

c20e8d536804cf97584eec93d9a89c09541155bc
SHA256

61f36c5ae038faa2b58a9a17b464d01414b4265e46634f353319c471d0a35789
SHA512

b7a751e49218230d574ca9cc4cbbb1995d89798268124b1617889c7558c66902f81fdb77a299edcc6d96452cec81adb76768172710e00c9272d30821ab0089c5

Score

9^/10

defense_evasion discovery execution impact ransomware

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2632	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	red.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2224	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2632	powershell.exe
2632	powershell.exe
2632	powershell.exe
2760	red.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeTakeOwnershipPrivilege	2760	red.exe
Token: SeDebugPrivilege	2760	red.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2632	2716	cmd.exe	31
PID 2716 wrote to memory of 2632	2716	cmd.exe	31
PID 2716 wrote to memory of 2632	2716	cmd.exe	31
PID 2632 wrote to memory of 2760	2632	powershell.exe	32
PID 2632 wrote to memory of 2760	2632	powershell.exe	32
PID 2632 wrote to memory of 2760	2632	powershell.exe	32
PID 2632 wrote to memory of 2760	2632	powershell.exe	32
PID 2760 wrote to memory of 2492	2760	red.exe	33
PID 2760 wrote to memory of 2492	2760	red.exe	33
PID 2760 wrote to memory of 2492	2760	red.exe	33
PID 2760 wrote to memory of 2492	2760	red.exe	33
PID 2760 wrote to memory of 288	2760	red.exe	35
PID 2760 wrote to memory of 288	2760	red.exe	35
PID 2760 wrote to memory of 288	2760	red.exe	35
PID 2760 wrote to memory of 288	2760	red.exe	35
PID 2760 wrote to memory of 2224	2760	red.exe	37
PID 2760 wrote to memory of 2224	2760	red.exe	37
PID 2760 wrote to memory of 2224	2760	red.exe	37
PID 2760 wrote to memory of 2224	2760	red.exe	37

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Reader.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden -command start red.exe "1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Users\Admin\AppData\Local\Temp\red.exe
    "C:\Users\Admin\AppData\Local\Temp\red.exe" 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2760
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      4⤵
      System Location Discovery: System Language Discovery
      PID:2492
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      4⤵
      System Location Discovery: System Language Discovery
      PID:288
  - - C:\Windows\system32\vssadmin.exe
      "C:\Windows\sysnative\vssadmin.exe" delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

memory/2632-38-0x000007FEF5FBE000-0x000007FEF5FBF000-memory.dmp

Filesize
4KB

Download
memory/2632-40-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download
memory/2632-39-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2632-43-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download
memory/2632-44-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download
memory/2632-45-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download
memory/2632-42-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download
memory/2632-41-0x0000000001F60000-0x0000000001F68000-memory.dmp

Filesize
32KB

Download
memory/2632-46-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp

Filesize
9.6MB

Download

Analysis

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