53ead46fd6527c5e97e29944d6c40302be0b63192d00c1646939330fb2d319c0

Analysis

max time kernel
143s
max time network
150s
platform
windows7_x64
resource
win7
submitted
26/06/2020, 08:58

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General

Target

aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe
Size

1.1MB
MD5

13e623cdfb75d99ea7e04c6157ca8ae6
SHA1

f25f0b369a355f30f5e11ac11a7f644bcfefd963
SHA256

aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772
SHA512

ea6b5c882a5298e527be1f3c40cc6d75c56453dd0111d7e9818c28fa7ec32feb19f17cab9a9e49eb0ab9f3a987f7dcc5cadfea7ae99a996f174b0a89e674f421

Score

9^/10

exploit ransomware persistence discovery

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

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

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 608 wrote to memory of 316	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	24
PID 608 wrote to memory of 316	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	24
PID 608 wrote to memory of 316	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	24
PID 608 wrote to memory of 316	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	24
PID 316 wrote to memory of 1460	316	Pn:bin	25
PID 316 wrote to memory of 1460	316	Pn:bin	25
PID 316 wrote to memory of 1460	316	Pn:bin	25
PID 316 wrote to memory of 1460	316	Pn:bin	25
PID 316 wrote to memory of 1680	316	Pn:bin	29
PID 316 wrote to memory of 1680	316	Pn:bin	29
PID 316 wrote to memory of 1680	316	Pn:bin	29
PID 316 wrote to memory of 1680	316	Pn:bin	29
PID 316 wrote to memory of 1816	316	Pn:bin	31
PID 316 wrote to memory of 1816	316	Pn:bin	31
PID 316 wrote to memory of 1816	316	Pn:bin	31
PID 316 wrote to memory of 1816	316	Pn:bin	31
PID 1764 wrote to memory of 1836	1764	Pn.exe	35
PID 1764 wrote to memory of 1836	1764	Pn.exe	35
PID 1764 wrote to memory of 1836	1764	Pn.exe	35
PID 1764 wrote to memory of 1836	1764	Pn.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 316 wrote to memory of 1576	316	Pn:bin	38
PID 316 wrote to memory of 1576	316	Pn:bin	38
PID 316 wrote to memory of 1576	316	Pn:bin	38
PID 316 wrote to memory of 1576	316	Pn:bin	38
PID 608 wrote to memory of 1636	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	40
PID 608 wrote to memory of 1636	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	40
PID 608 wrote to memory of 1636	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe	40
PID 608 wrote to memory of 1636	608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.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 1620	1636	cmd.exe	43
PID 1636 wrote to memory of 1620	1636	cmd.exe	43
PID 1636 wrote to memory of 1620	1636	cmd.exe	43
PID 1636 wrote to memory of 1620	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 1968	1576	cmd.exe	46
PID 1576 wrote to memory of 1968	1576	cmd.exe	46
PID 1576 wrote to memory of 1968	1576	cmd.exe	46
PID 1576 wrote to memory of 1968	1576	cmd.exe	46
PID 1636 wrote to memory of 1896	1636	cmd.exe	45
PID 1636 wrote to memory of 1896	1636	cmd.exe	45
PID 1636 wrote to memory of 1896	1636	cmd.exe	45
PID 1636 wrote to memory of 1896	1636	cmd.exe	45

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1680	takeown.exe
1816	icacls.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

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
1460	vssadmin.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\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\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

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Pn:bin	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1680	takeown.exe
1816	icacls.exe

Loads dropped DLL 2 IoCs

pid	Process
608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe
608	aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe

Executes dropped EXE 2 IoCs

pid	Process
316	Pn:bin
1764	Pn.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	876	vssvc.exe
Token: SeRestorePrivilege	876	vssvc.exe
Token: SeAuditPrivilege	876	vssvc.exe

Deletes itself 1 IoCs

pid	Process
1636	cmd.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

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

C:\Users\Admin\AppData\Local\Temp\aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe
"C:\Users\Admin\AppData\Local\Temp\aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe"
1⤵
- Suspicious use of WriteProcessMemory
- NTFS ADS
- Loads dropped DLL
PID:608
- C:\Users\Admin\AppData\Roaming\Pn:bin
  C:\Users\Admin\AppData\Roaming\Pn:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:316
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1460
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Pn.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1680
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Pn.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\Pn" & del "C:\Users\Admin\AppData\Roaming\Pn"
    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\Pn"
      4⤵
      Views/modifies file attributes
      PID:1968
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe" & del "C:\Users\Admin\AppData\Local\Temp\aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Deletes itself
  PID:1636
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1620
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\aa05e7a187ddec2e11fc1c9eafe61408d085b0ab6cd12caeaf531c9dca129772.exe"
    3⤵
    - Views/modifies file attributes
    PID:1896

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:876

C:\Windows\SysWOW64\Pn.exe
C:\Windows\SysWOW64\Pn.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\Pn.exe" & del "C:\Windows\SysWOW64\Pn.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\Pn.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    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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