f6a83e6ed8bf92b8ff4da0aba72fe354199ec79a99008b34800e4cfdb92d3a67

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:48

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General

Target

_003E0000.exe.vir.exe
Size

116KB
MD5

f57d188c4667fab46208396af20badd2
SHA1

367ea268c494d17672ef371adebef0f505c1a804
SHA256

878304de96556ed340f190a9d8b5650dc71512eed4210676560fc41e7ac4857c
SHA512

157615951ccf90c69aaa4e4e1e1f664ffcb6c5817371143ac5bc2dfac04185e57981d50194ad4a1784c29f16211b6a18e9fa085721d05e29ba63377e40dc41a2
SSDEEP

3072:SsB0ura/QOVLLkeyYP1RNDZyuubclhZUnr:Sef7wkey21flyu8+i

Score

9^/10

defense_evasion discovery execution impact persistence ransomware

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\610c40b.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\610c40 = "C:\\610c40b\\610c40b.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*10c40 = "C:\\610c40b\\610c40b.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\610c40b = "C:\\Users\\Admin\\AppData\\Roaming\\610c40b.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*10c40b = "C:\\Users\\Admin\\AppData\\Roaming\\610c40b.exe"	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	_003E0000.exe.vir.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2332	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
892	explorer.exe
892	explorer.exe
892	explorer.exe
892	explorer.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1892	_003E0000.exe.vir.exe
892	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2696	vssvc.exe
Token: SeRestorePrivilege	2696	vssvc.exe
Token: SeAuditPrivilege	2696	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 892	1892	_003E0000.exe.vir.exe	28
PID 1892 wrote to memory of 892	1892	_003E0000.exe.vir.exe	28
PID 1892 wrote to memory of 892	1892	_003E0000.exe.vir.exe	28
PID 1892 wrote to memory of 892	1892	_003E0000.exe.vir.exe	28
PID 892 wrote to memory of 2988	892	explorer.exe	29
PID 892 wrote to memory of 2988	892	explorer.exe	29
PID 892 wrote to memory of 2988	892	explorer.exe	29
PID 892 wrote to memory of 2988	892	explorer.exe	29
PID 892 wrote to memory of 2332	892	explorer.exe	30
PID 892 wrote to memory of 2332	892	explorer.exe	30
PID 892 wrote to memory of 2332	892	explorer.exe	30
PID 892 wrote to memory of 2332	892	explorer.exe	30

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\_003E0000.exe.vir.exe
"C:\Users\Admin\AppData\Local\Temp\_003E0000.exe.vir.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\syswow64\explorer.exe
  "C:\Windows\syswow64\explorer.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:892
- - C:\Windows\syswow64\svchost.exe
    -k netsvcs
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2988
- - C:\Windows\syswow64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2332

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/892-0-0x00000000000D0000-0x00000000000F0000-memory.dmp

Filesize
128KB

Download
memory/892-1-0x00000000000D0000-0x00000000000F0000-memory.dmp

Filesize
128KB

Download
memory/892-7-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/892-8-0x00000000000D0000-0x00000000000F0000-memory.dmp

Filesize
128KB

Download
memory/2988-5-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2988-6-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2988-9-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download