905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a

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

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 408 vssvc.exe
Token: SeRestorePrivilege 408 vssvc.exe
Token: SeAuditPrivilege 408 vssvc.exe
NTFS ADS 1 IoCs

Processes:

2cc4534b0dd0e1c8d5b89644274a10c1.exe

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 Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

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

Processes:

vssadmin.exe

pid process

3112 vssadmin.exe

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

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

pid	process
1000	takeown.exe
1140	icacls.exe

pid	process
3112	vssadmin.exe

Drops file in System32 directory 2 IoCs

Processes:

F79}:binattrib.exe

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

Processes:

takeown.exeicacls.exe

pid process

1000 takeown.exe
1140 icacls.exe

pid	process
1000	takeown.exe
1140	icacls.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

2cc4534b0dd0e1c8d5b89644274a10c1.exeF79}:binF79}.execmd.execmd.execmd.exe

description	pid	process	target process
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	F79}:bin
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	F79}:bin
PID 3648 wrote to memory of 292	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	F79}:bin
PID 292 wrote to memory of 3112	292	F79}:bin	vssadmin.exe
PID 292 wrote to memory of 3112	292	F79}:bin	vssadmin.exe
PID 292 wrote to memory of 1000	292	F79}:bin	takeown.exe
PID 292 wrote to memory of 1000	292	F79}:bin	takeown.exe
PID 292 wrote to memory of 1000	292	F79}:bin	takeown.exe
PID 292 wrote to memory of 1140	292	F79}:bin	icacls.exe
PID 292 wrote to memory of 1140	292	F79}:bin	icacls.exe
PID 292 wrote to memory of 1140	292	F79}:bin	icacls.exe
PID 1284 wrote to memory of 1716	1284	F79}.exe	cmd.exe
PID 1284 wrote to memory of 1716	1284	F79}.exe	cmd.exe
PID 1284 wrote to memory of 1716	1284	F79}.exe	cmd.exe
PID 1716 wrote to memory of 2024	1716	cmd.exe	choice.exe
PID 1716 wrote to memory of 2024	1716	cmd.exe	choice.exe
PID 1716 wrote to memory of 2024	1716	cmd.exe	choice.exe
PID 292 wrote to memory of 1968	292	F79}:bin	cmd.exe
PID 292 wrote to memory of 1968	292	F79}:bin	cmd.exe
PID 292 wrote to memory of 1968	292	F79}:bin	cmd.exe
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 3648 wrote to memory of 2312	3648	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 1968 wrote to memory of 2936	1968	cmd.exe	choice.exe
PID 1968 wrote to memory of 2936	1968	cmd.exe	choice.exe
PID 1968 wrote to memory of 2936	1968	cmd.exe	choice.exe
PID 2312 wrote to memory of 2628	2312	cmd.exe	choice.exe
PID 2312 wrote to memory of 2628	2312	cmd.exe	choice.exe
PID 2312 wrote to memory of 2628	2312	cmd.exe	choice.exe
PID 1716 wrote to memory of 3864	1716	cmd.exe	attrib.exe
PID 1716 wrote to memory of 3864	1716	cmd.exe	attrib.exe
PID 1716 wrote to memory of 3864	1716	cmd.exe	attrib.exe
PID 1968 wrote to memory of 3928	1968	cmd.exe	attrib.exe
PID 1968 wrote to memory of 3928	1968	cmd.exe	attrib.exe
PID 1968 wrote to memory of 3928	1968	cmd.exe	attrib.exe
PID 2312 wrote to memory of 3800	2312	cmd.exe	attrib.exe
PID 2312 wrote to memory of 3800	2312	cmd.exe	attrib.exe
PID 2312 wrote to memory of 3800	2312	cmd.exe	attrib.exe

Executes dropped EXE 2 IoCs

Processes:

F79}:binF79}.exe

pid process

292 F79}:bin
1284 F79}.exe
Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

3864 attrib.exe
3928 attrib.exe
3800 attrib.exe

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

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

Processes:

F79}.exe

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

Processes:

vssvc.exe

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