bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8

Analysis

max time kernel
59s
max time network
6s
platform
windows7_x64
resource
win7
submitted
25-06-2020 05:30

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General

Target

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
Size

60KB
MD5

0ed2ca539a01cdb86c88a9a1604b2005
SHA1

4fed7eae00bfa21938e49f33b7c6794fd7d0750c
SHA256

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8
SHA512

34dad101cd7c5f9ff2267674d224986b9274e0e17d9ae665ca1af4ffa57408106238b1e248045465ab17c72a4b92473ab3714aefb705d95f9725a4251379c7e2

Score

9^/10

persistence discovery exploit ransomware

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	740	vssvc.exe
Token: SeRestorePrivilege	740	vssvc.exe
Token: SeAuditPrivilege	740	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\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
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
1804	takeown.exe
1356	icacls.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1356	icacls.exe
1804	takeown.exe

Loads dropped DLL 2 IoCs

pid	Process
1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	24
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	24
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	24
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	24
PID 1484 wrote to memory of 284	1484	Mpdev:bin	25
PID 1484 wrote to memory of 284	1484	Mpdev:bin	25
PID 1484 wrote to memory of 284	1484	Mpdev:bin	25
PID 1484 wrote to memory of 284	1484	Mpdev:bin	25
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	29
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	29
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	29
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	29
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	31
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	31
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	31
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	31
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	35
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	35
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	35
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	35
PID 1624 wrote to memory of 1532	1624	cmd.exe	37
PID 1624 wrote to memory of 1532	1624	cmd.exe	37
PID 1624 wrote to memory of 1532	1624	cmd.exe	37
PID 1624 wrote to memory of 1532	1624	cmd.exe	37
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	38
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	38
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	38
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	38
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	40
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	40
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	40
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	40
PID 1916 wrote to memory of 1972	1916	cmd.exe	42
PID 1916 wrote to memory of 1972	1916	cmd.exe	42
PID 1916 wrote to memory of 1972	1916	cmd.exe	42
PID 1916 wrote to memory of 1972	1916	cmd.exe	42
PID 1944 wrote to memory of 1964	1944	cmd.exe	43
PID 1944 wrote to memory of 1964	1944	cmd.exe	43
PID 1944 wrote to memory of 1964	1944	cmd.exe	43
PID 1944 wrote to memory of 1964	1944	cmd.exe	43
PID 1624 wrote to memory of 1980	1624	cmd.exe	44
PID 1624 wrote to memory of 1980	1624	cmd.exe	44
PID 1624 wrote to memory of 1980	1624	cmd.exe	44
PID 1624 wrote to memory of 1980	1624	cmd.exe	44
PID 1916 wrote to memory of 2040	1916	cmd.exe	45
PID 1916 wrote to memory of 2040	1916	cmd.exe	45
PID 1916 wrote to memory of 2040	1916	cmd.exe	45
PID 1916 wrote to memory of 2040	1916	cmd.exe	45
PID 1944 wrote to memory of 2004	1944	cmd.exe	46
PID 1944 wrote to memory of 2004	1944	cmd.exe	46
PID 1944 wrote to memory of 2004	1944	cmd.exe	46
PID 1944 wrote to memory of 2004	1944	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
284	vssadmin.exe

Drops file in System32 directory 2 IoCs

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

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1980	attrib.exe
2040	attrib.exe
2004	attrib.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Mpdev:bin	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

Executes dropped EXE 2 IoCs

pid	Process
1484	Mpdev:bin
1760	Mpdev.exe

Deletes itself 1 IoCs

pid	Process
1944	cmd.exe

C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
"C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- NTFS ADS
PID:1456
- C:\Users\Admin\AppData\Roaming\Mpdev:bin
  C:\Users\Admin\AppData\Roaming\Mpdev:bin -r
  2⤵
  - Suspicious use of WriteProcessMemory
  - Drops file in System32 directory
  - Executes dropped EXE
  PID:1484
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:284
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Mpdev.exe
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:1804
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Mpdev.exe /reset
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:1356
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Mpdev" & del "C:\Users\Admin\AppData\Roaming\Mpdev"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1916
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1972
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Mpdev"
      4⤵
      Views/modifies file attributes
      PID:2040
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe" & del "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Deletes itself
  PID:1944
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1964
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
    3⤵
    - Views/modifies file attributes
    PID:2004

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:740

C:\Windows\SysWOW64\Mpdev.exe
C:\Windows\SysWOW64\Mpdev.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Mpdev.exe" & del "C:\Windows\SysWOW64\Mpdev.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1532
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Mpdev.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1980

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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