ca0273c55507c3aae95539812c2c5d9bbdc80deb8e714360fe4bcc65d257aeb0

Analysis

max time kernel
141s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 12:59

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General

Target

350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe
Size

737KB
MD5

0bf7bc20496143a9f028e77ab47b4698
SHA1

aa54013aeb502b4a936331deb76a6411f1f1ade7
SHA256

350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd
SHA512

5e94cd77c4ad6dfa1064915ca0f4d117a2e3a4e924d05a16df0b223a5a0cbcb6124627e41d184aa0584f3ff3bbd5f9f913964887c7eb140e105317d4f5709981
SSDEEP

12288:bO+sm75a7DI9Mv53VI/XfaUs442JbV24chSS1i2wZbDFMMWzVFq:rh75a7M9S3VYa4npY4cFM2MWhY

Score

9^/10

ransomware

Malware Config

Signatures

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

File Deletion
T1070.004

Inhibit System Recovery
T1490
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1312 2236 WerFault.exe 350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

2548 vssadmin.exe

pid	pid_target	process	target process
1312	2236	WerFault.exe	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe

pid	process
2548	vssadmin.exe

Modifies registry class 3 IoCs

Processes:

350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u\DefaultIcon	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2940 vssvc.exe
Token: SeRestorePrivilege 2940 vssvc.exe
Token: SeAuditPrivilege 2940 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	2940	vssvc.exe
Token: SeRestorePrivilege	2940	vssvc.exe
Token: SeAuditPrivilege	2940	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.execmd.exe

description	pid	process	target process
PID 2236 wrote to memory of 1692	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	cmd.exe
PID 2236 wrote to memory of 1692	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	cmd.exe
PID 2236 wrote to memory of 1692	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	cmd.exe
PID 2236 wrote to memory of 1692	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	cmd.exe
PID 1692 wrote to memory of 2548	1692	cmd.exe	vssadmin.exe
PID 1692 wrote to memory of 2548	1692	cmd.exe	vssadmin.exe
PID 1692 wrote to memory of 2548	1692	cmd.exe	vssadmin.exe
PID 1692 wrote to memory of 2548	1692	cmd.exe	vssadmin.exe
PID 2236 wrote to memory of 1312	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	WerFault.exe
PID 2236 wrote to memory of 1312	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	WerFault.exe
PID 2236 wrote to memory of 1312	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	WerFault.exe
PID 2236 wrote to memory of 1312	2236	350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe	WerFault.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\350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe
"C:\Users\Admin\AppData\Local\Temp\350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 324
  2⤵
  - Program crash
  PID:1312

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/2236-0-0x0000000000460000-0x00000000004F3000-memory.dmp

Filesize
588KB

Download
memory/2236-1-0x0000000000910000-0x00000000009E9000-memory.dmp

Filesize
868KB

Download
memory/2236-3-0x0000000000910000-0x00000000009E9000-memory.dmp

Filesize
868KB

Download