940bddbc6ef19b211f2022d61bf4d006969da11f9fe0beba98586e554dfcc741

General

Target

R5X2SH.exe
Size

229KB
MD5

2316091f02153ac20dff768513aae1a4
SHA1

6b7b1017b9313ab87fccf4ea08a427c1499b89dc
SHA256

940bddbc6ef19b211f2022d61bf4d006969da11f9fe0beba98586e554dfcc741
SHA512

ff039365b85686a4b191a81d3f0e3b8ced76a7b3161d28906854d86cf2452c96dd2e476ef29f3eae29ea22efce4f0d4484b82a32bfe8dde0e0fec91d630b1448
SSDEEP

6144:oNxyvPouZtK58suC/004GKXkq4RUs3fY:oNxyXNtK58su3Z0RPY

Score

9^/10

discovery persistence ransomware

Malware Config

Signatures

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

File Deletion
T1107

Inhibit System Recovery
T1490
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1624 cmd.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

2036 icacls.exe

pid	process
1624	cmd.exe

pid	process
2036	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

R5X2SH.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run	R5X2SH.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSFEEditor = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\R5X2SH.exe\" e"	R5X2SH.exe

Drops desktop.ini file(s) 1 IoCs

Processes:

R5X2SH.exe

description ioc process

File opened for modification \??\E:\$RECYCLE.BIN\S-1-5-21-3948302646-268491222-1934009652-1000\desktop.ini R5X2SH.exe

description	ioc	process
File opened for modification	\??\E:\$RECYCLE.BIN\S-1-5-21-3948302646-268491222-1934009652-1000\desktop.ini	R5X2SH.exe

Enumerates connected drives 3 TTPs 18 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vssadmin.exeR5X2SH.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exe

description	ioc	process
File opened (read-only)	\??\h:	vssadmin.exe
File opened (read-only)	\??\H:	vssadmin.exe
File opened (read-only)	\??\D:	R5X2SH.exe
File opened (read-only)	\??\D:	vssadmin.exe
File opened (read-only)	\??\f:	vssadmin.exe
File opened (read-only)	\??\g:	vssadmin.exe
File opened (read-only)	\??\G:	vssadmin.exe
File opened (read-only)	\??\h:	vssadmin.exe
File opened (read-only)	\??\D:	vssadmin.exe
File opened (read-only)	\??\E:	vssadmin.exe
File opened (read-only)	\??\f:	vssadmin.exe
File opened (read-only)	\??\F:	vssadmin.exe
File opened (read-only)	\??\E:	R5X2SH.exe
File opened (read-only)	\??\E:	vssadmin.exe
File opened (read-only)	\??\F:	vssadmin.exe
File opened (read-only)	\??\g:	vssadmin.exe
File opened (read-only)	\??\G:	vssadmin.exe
File opened (read-only)	\??\H:	vssadmin.exe

Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exe

pid process

1544 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

840 timeout.exe

pid	process
1544	sc.exe

pid	process
840	timeout.exe

Interacts with shadow copies 2 TTPs 14 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

Processes:

vssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exevssadmin.exe

pid	process
1948	vssadmin.exe
872	vssadmin.exe
1920	vssadmin.exe
1552	vssadmin.exe
1624	vssadmin.exe
2000	vssadmin.exe
1264	vssadmin.exe
1436	vssadmin.exe
1180	vssadmin.exe
1964	vssadmin.exe
1488	vssadmin.exe
2012	vssadmin.exe
1212	vssadmin.exe
820	vssadmin.exe

Runs net.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exeR5X2SH.exe

pid process

1572 powershell.exe
2016 R5X2SH.exe

pid	process
1572	powershell.exe
2016	R5X2SH.exe

Suspicious use of AdjustPrivilegeToken 44 IoCs

Processes:

vssvc.exewmic.exepowershell.exe

description	pid	process
Token: SeBackupPrivilege	1504	vssvc.exe
Token: SeRestorePrivilege	1504	vssvc.exe
Token: SeAuditPrivilege	1504	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1104	wmic.exe
Token: SeSecurityPrivilege	1104	wmic.exe
Token: SeTakeOwnershipPrivilege	1104	wmic.exe
Token: SeLoadDriverPrivilege	1104	wmic.exe
Token: SeSystemProfilePrivilege	1104	wmic.exe
Token: SeSystemtimePrivilege	1104	wmic.exe
Token: SeProfSingleProcessPrivilege	1104	wmic.exe
Token: SeIncBasePriorityPrivilege	1104	wmic.exe
Token: SeCreatePagefilePrivilege	1104	wmic.exe
Token: SeBackupPrivilege	1104	wmic.exe
Token: SeRestorePrivilege	1104	wmic.exe
Token: SeShutdownPrivilege	1104	wmic.exe
Token: SeDebugPrivilege	1104	wmic.exe
Token: SeSystemEnvironmentPrivilege	1104	wmic.exe
Token: SeRemoteShutdownPrivilege	1104	wmic.exe
Token: SeUndockPrivilege	1104	wmic.exe
Token: SeManageVolumePrivilege	1104	wmic.exe
Token: 33	1104	wmic.exe
Token: 34	1104	wmic.exe
Token: 35	1104	wmic.exe
Token: SeIncreaseQuotaPrivilege	1104	wmic.exe
Token: SeSecurityPrivilege	1104	wmic.exe
Token: SeTakeOwnershipPrivilege	1104	wmic.exe
Token: SeLoadDriverPrivilege	1104	wmic.exe
Token: SeSystemProfilePrivilege	1104	wmic.exe
Token: SeSystemtimePrivilege	1104	wmic.exe
Token: SeProfSingleProcessPrivilege	1104	wmic.exe
Token: SeIncBasePriorityPrivilege	1104	wmic.exe
Token: SeCreatePagefilePrivilege	1104	wmic.exe
Token: SeBackupPrivilege	1104	wmic.exe
Token: SeRestorePrivilege	1104	wmic.exe
Token: SeShutdownPrivilege	1104	wmic.exe
Token: SeDebugPrivilege	1104	wmic.exe
Token: SeSystemEnvironmentPrivilege	1104	wmic.exe
Token: SeRemoteShutdownPrivilege	1104	wmic.exe
Token: SeUndockPrivilege	1104	wmic.exe
Token: SeManageVolumePrivilege	1104	wmic.exe
Token: 33	1104	wmic.exe
Token: 34	1104	wmic.exe
Token: 35	1104	wmic.exe
Token: SeDebugPrivilege	1572	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

R5X2SH.exenet.exe

description	pid	process	target process
PID 2016 wrote to memory of 2012	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2012	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2012	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2012	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1996	2016	R5X2SH.exe	net.exe
PID 2016 wrote to memory of 1996	2016	R5X2SH.exe	net.exe
PID 2016 wrote to memory of 1996	2016	R5X2SH.exe	net.exe
PID 2016 wrote to memory of 1996	2016	R5X2SH.exe	net.exe
PID 1996 wrote to memory of 644	1996	net.exe	net1.exe
PID 1996 wrote to memory of 644	1996	net.exe	net1.exe
PID 1996 wrote to memory of 644	1996	net.exe	net1.exe
PID 1996 wrote to memory of 644	1996	net.exe	net1.exe
PID 2016 wrote to memory of 1544	2016	R5X2SH.exe	sc.exe
PID 2016 wrote to memory of 1544	2016	R5X2SH.exe	sc.exe
PID 2016 wrote to memory of 1544	2016	R5X2SH.exe	sc.exe
PID 2016 wrote to memory of 1544	2016	R5X2SH.exe	sc.exe
PID 2016 wrote to memory of 1104	2016	R5X2SH.exe	wmic.exe
PID 2016 wrote to memory of 1104	2016	R5X2SH.exe	wmic.exe
PID 2016 wrote to memory of 1104	2016	R5X2SH.exe	wmic.exe
PID 2016 wrote to memory of 1104	2016	R5X2SH.exe	wmic.exe
PID 2016 wrote to memory of 1212	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1212	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1212	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1212	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1948	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1948	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1948	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1948	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 820	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 820	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 820	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 820	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1436	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1436	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1436	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1436	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1624	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1624	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1624	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1624	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1180	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1180	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1180	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1180	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1964	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1964	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1964	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1964	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 872	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 872	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 872	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 872	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1488	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1488	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1488	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1488	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2000	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2000	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2000	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 2000	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1920	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1920	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1920	2016	R5X2SH.exe	vssadmin.exe
PID 2016 wrote to memory of 1920	2016	R5X2SH.exe	vssadmin.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

R5X2SH.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	R5X2SH.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\R5X2SH.exe
"C:\Users\Admin\AppData\Local\Temp\R5X2SH.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2016

C:\Windows\SysWOW64\vssadmin.exe
vssadmin delete shadows /all /quiet
2⤵
- Interacts with shadow copies
PID:2012

C:\Windows\SysWOW64\net.exe
net stop VSS & sc config VSS start= disabled
2⤵
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop VSS & sc config VSS start= disabled
3⤵
PID:644

C:\Windows\SysWOW64\sc.exe
sc config VSS start= Demand & net start VSS
2⤵
- Launches sc.exe
PID:1544

C:\Windows\SysWOW64\Wbem\wmic.exe
wmic.exe SHADOWCOPY delete /nointeractive
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1104

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
2⤵
- Interacts with shadow copies
PID:1212

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=401MB
2⤵
- Interacts with shadow copies
PID:1948

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=c: /on=c: /maxsize=unbounded
2⤵
- Interacts with shadow copies
PID:820

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=401MB
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1436

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=d: /on=d: /maxsize=unbounded
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1624

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=401MB
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1180

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=e: /on=e: /maxsize=unbounded
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1964

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=401MB
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:872

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=f: /on=f: /maxsize=unbounded
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1488

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=401MB
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:2000

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=g: /on=g: /maxsize=unbounded
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1920

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=401MB
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1264

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Resize ShadowStorage /for=h: /on=h: /maxsize=unbounded
2⤵
- Enumerates connected drives
- Interacts with shadow copies
PID:1552

C:\Windows\SysWOW64\icacls.exe
icacls.exe "{A-Z}:" /grant {Username}:F /T /C /Q
2⤵
- Modifies file permissions
PID:2036

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -command "Get-WmiObject Win32_Shadowcopy | ForEach-Object {$_.Delete();}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1572

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout 1 && del "C:\Users\Admin\AppData\Local\Temp\R5X2SH.exe" >> NUL
2⤵
- Deletes itself
PID:1624

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:840

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1504

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

File Permissions Modification

1

T1222

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

memory/1572-61-0x00000000026E0000-0x0000000002720000-memory.dmp

Filesize
256KB

Download
memory/2016-54-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download
memory/2016-56-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download
memory/2016-55-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download
memory/2016-57-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download
memory/2016-58-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download
memory/2016-66-0x0000000000890000-0x000000000091F000-memory.dmp

Filesize
572KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads