905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a

Analysis

max time kernel
63s
max time network
64s
platform
windows10_x64
resource
win10v200722
submitted
05/08/2020, 20:59

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General

Target

2cc4534b0dd0e1c8d5b89644274a10c1.exe
Size

1.2MB
MD5

2cc4534b0dd0e1c8d5b89644274a10c1
SHA1

735ee2c15c0b7172f65d39f0fd33b9186ee69653
SHA256

905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a
SHA512

a842b2d171aa6efa1b391d5d0f84663e78021b485555e2bf10a5e589d8652057f5abbd88e1a5ec628b714692ec5d63c3172894aa7846d5897e87d99dad67e2b8

Score

9^/10

ransomware persistence discovery exploit

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	408	vssvc.exe
Token: SeRestorePrivilege	408	vssvc.exe
Token: SeAuditPrivilege	408	vssvc.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\F79}:bin	2cc4534b0dd0e1c8d5b89644274a10c1.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1000	takeown.exe
1140	icacls.exe

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
3112	vssadmin.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\F79}.exe	F79}:bin
File opened for modification	C:\Windows\SysWOW64\F79}.exe	attrib.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1000	takeown.exe
1140	icacls.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	66
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	66
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	66
PID 292 wrote to memory of 3112	292	F79}:bin	67
PID 292 wrote to memory of 3112	292	F79}:bin	67
PID 292 wrote to memory of 1000	292	F79}:bin	71
PID 292 wrote to memory of 1000	292	F79}:bin	71
PID 292 wrote to memory of 1000	292	F79}:bin	71
PID 292 wrote to memory of 1140	292	F79}:bin	73
PID 292 wrote to memory of 1140	292	F79}:bin	73
PID 292 wrote to memory of 1140	292	F79}:bin	73
PID 1284 wrote to memory of 1716	1284	F79}.exe	77
PID 1284 wrote to memory of 1716	1284	F79}.exe	77
PID 1284 wrote to memory of 1716	1284	F79}.exe	77
PID 1716 wrote to memory of 2024	1716	cmd.exe	79
PID 1716 wrote to memory of 2024	1716	cmd.exe	79
PID 1716 wrote to memory of 2024	1716	cmd.exe	79
PID 292 wrote to memory of 1968	292	F79}:bin	80
PID 292 wrote to memory of 1968	292	F79}:bin	80
PID 292 wrote to memory of 1968	292	F79}:bin	80
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	82
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	82
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	82
PID 1968 wrote to memory of 2936	1968	cmd.exe	84
PID 1968 wrote to memory of 2936	1968	cmd.exe	84
PID 1968 wrote to memory of 2936	1968	cmd.exe	84
PID 2312 wrote to memory of 2628	2312	cmd.exe	85
PID 2312 wrote to memory of 2628	2312	cmd.exe	85
PID 2312 wrote to memory of 2628	2312	cmd.exe	85
PID 1716 wrote to memory of 3864	1716	cmd.exe	87
PID 1716 wrote to memory of 3864	1716	cmd.exe	87
PID 1716 wrote to memory of 3864	1716	cmd.exe	87
PID 1968 wrote to memory of 3928	1968	cmd.exe	88
PID 1968 wrote to memory of 3928	1968	cmd.exe	88
PID 1968 wrote to memory of 3928	1968	cmd.exe	88
PID 2312 wrote to memory of 3800	2312	cmd.exe	89
PID 2312 wrote to memory of 3800	2312	cmd.exe	89
PID 2312 wrote to memory of 3800	2312	cmd.exe	89

Executes dropped EXE 2 IoCs

pid	Process
292	F79}:bin
1284	F79}.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3864	attrib.exe
3928	attrib.exe
3800	attrib.exe

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\ClearDeny.crw.garminwasted_info	F79}.exe
File renamed	C:\Users\Admin\Pictures\ClearDeny.crw => C:\Users\Admin\Pictures\ClearDeny.crw.garminwasted	F79}.exe
File opened for modification	C:\Users\Admin\Pictures\ClearDeny.crw.garminwasted	F79}.exe
File created	C:\Users\Admin\Pictures\EnterSearch.tiff.garminwasted_info	F79}.exe
File renamed	C:\Users\Admin\Pictures\EnterSearch.tiff => C:\Users\Admin\Pictures\EnterSearch.tiff.garminwasted	F79}.exe
File opened for modification	C:\Users\Admin\Pictures\EnterSearch.tiff.garminwasted	F79}.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

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\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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe
"C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Users\Admin\AppData\Roaming\F79}:bin
  C:\Users\Admin\AppData\Roaming\F79}:bin -r
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:292
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3112
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\F79}.exe
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:1000
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\F79}.exe /reset
    3⤵
    - Modifies file permissions
    - Possible privilege escalation attempt
    PID:1140
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\F79}" & del "C:\Users\Admin\AppData\Roaming\F79}"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1968
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:2936
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\F79}"
      4⤵
      Views/modifies file attributes
      PID:3928
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe" & del "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2628
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
    3⤵
    - Views/modifies file attributes
    PID:3800

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:408

C:\Windows\SysWOW64\F79}.exe
C:\Windows\SysWOW64\F79}.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
- Modifies extensions of user files
PID:1284
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\F79}.exe" & del "C:\Windows\SysWOW64\F79}.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1716
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2024
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\F79}.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3864

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

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads