bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8

Analysis

max time kernel
128s
max time network
39s
platform
windows10_x64
resource
win10v200430
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

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

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2188	attrib.exe
260	attrib.exe
280	attrib.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1516	vssvc.exe
Token: SeRestorePrivilege	1516	vssvc.exe
Token: SeAuditPrivilege	1516	vssvc.exe

Executes dropped EXE 2 IoCs

pid	Process
1548	Resources:bin
3812	Resources.exe

Drops file in System32 directory 2 IoCs

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

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2604	takeown.exe
2824	icacls.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
2604	takeown.exe
2824	icacls.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Resources: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

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
1664	vssadmin.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 1548	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	68
PID 1484 wrote to memory of 1548	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	68
PID 1484 wrote to memory of 1548	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	68
PID 1548 wrote to memory of 1664	1548	Resources:bin	69
PID 1548 wrote to memory of 1664	1548	Resources:bin	69
PID 1548 wrote to memory of 2604	1548	Resources:bin	73
PID 1548 wrote to memory of 2604	1548	Resources:bin	73
PID 1548 wrote to memory of 2604	1548	Resources:bin	73
PID 1548 wrote to memory of 2824	1548	Resources:bin	75
PID 1548 wrote to memory of 2824	1548	Resources:bin	75
PID 1548 wrote to memory of 2824	1548	Resources:bin	75
PID 3812 wrote to memory of 3980	3812	Resources.exe	79
PID 3812 wrote to memory of 3980	3812	Resources.exe	79
PID 3812 wrote to memory of 3980	3812	Resources.exe	79
PID 3980 wrote to memory of 984	3980	cmd.exe	81
PID 3980 wrote to memory of 984	3980	cmd.exe	81
PID 3980 wrote to memory of 984	3980	cmd.exe	81
PID 1548 wrote to memory of 1672	1548	Resources:bin	82
PID 1548 wrote to memory of 1672	1548	Resources:bin	82
PID 1548 wrote to memory of 1672	1548	Resources:bin	82
PID 1484 wrote to memory of 3484	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	84
PID 1484 wrote to memory of 3484	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	84
PID 1484 wrote to memory of 3484	1484	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	84
PID 1672 wrote to memory of 3776	1672	cmd.exe	86
PID 1672 wrote to memory of 3776	1672	cmd.exe	86
PID 1672 wrote to memory of 3776	1672	cmd.exe	86
PID 3484 wrote to memory of 980	3484	cmd.exe	87
PID 3484 wrote to memory of 980	3484	cmd.exe	87
PID 3484 wrote to memory of 980	3484	cmd.exe	87
PID 3980 wrote to memory of 2188	3980	cmd.exe	92
PID 3980 wrote to memory of 2188	3980	cmd.exe	92
PID 3980 wrote to memory of 2188	3980	cmd.exe	92
PID 1672 wrote to memory of 260	1672	cmd.exe	93
PID 1672 wrote to memory of 260	1672	cmd.exe	93
PID 1672 wrote to memory of 260	1672	cmd.exe	93
PID 3484 wrote to memory of 280	3484	cmd.exe	94
PID 3484 wrote to memory of 280	3484	cmd.exe	94
PID 3484 wrote to memory of 280	3484	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
"C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Users\Admin\AppData\Roaming\Resources:bin
  C:\Users\Admin\AppData\Roaming\Resources:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1548
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1664
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Resources.exe
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:2604
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Resources.exe /reset
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:2824
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Resources" & del "C:\Users\Admin\AppData\Roaming\Resources"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1672
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:3776
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Resources"
      4⤵
      Views/modifies file attributes
      PID:260
- 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
  PID:3484
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:980
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
    3⤵
    - Views/modifies file attributes
    PID:280

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1516

C:\Windows\SysWOW64\Resources.exe
C:\Windows\SysWOW64\Resources.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3812
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Resources.exe" & del "C:\Windows\SysWOW64\Resources.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3980
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:984
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Resources.exe"
    3⤵
    - Views/modifies file attributes
    - Drops file in System32 directory
    PID:2188

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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