a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7

General

Target

a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe
Size

623KB
MD5

9dbd19323b253a9758195c8efa72f329
SHA1

1661ae91f105b6854ebfbaa47563fce45660cc79
SHA256

a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7
SHA512

2e34266b691a8041e525037ae67cf65142523c45f01b6da2008a50b452b9664697f86011cdb0daf0510cfea33bd786560bb2d147b06b00779f89199d32552e01
SSDEEP

12288:DIkz+rSP5VV3VG7rYyPT+p/VYXMJ8oD536bGIqs7GBvw0QygfmHH:DISj3IXYETQV1XD5VIZ7GOg1n

Score

9^/10

defense_evasion execution impact 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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2600 2140 WerFault.exe a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.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

2180 vssadmin.exe

pid	pid_target	process	target process
2600	2140	WerFault.exe	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe

pid	process
2180	vssadmin.exe

Modifies registry class 3 IoCs

Processes:

a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q\DefaultIcon	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3032 vssvc.exe
Token: SeRestorePrivilege 3032 vssvc.exe
Token: SeAuditPrivilege 3032 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	3032	vssvc.exe
Token: SeRestorePrivilege	3032	vssvc.exe
Token: SeAuditPrivilege	3032	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.execmd.exe

description	pid	process	target process
PID 2140 wrote to memory of 2156	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	cmd.exe
PID 2140 wrote to memory of 2156	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	cmd.exe
PID 2140 wrote to memory of 2156	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	cmd.exe
PID 2140 wrote to memory of 2156	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	cmd.exe
PID 2156 wrote to memory of 2180	2156	cmd.exe	vssadmin.exe
PID 2156 wrote to memory of 2180	2156	cmd.exe	vssadmin.exe
PID 2156 wrote to memory of 2180	2156	cmd.exe	vssadmin.exe
PID 2156 wrote to memory of 2180	2156	cmd.exe	vssadmin.exe
PID 2140 wrote to memory of 2600	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	WerFault.exe
PID 2140 wrote to memory of 2600	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	WerFault.exe
PID 2140 wrote to memory of 2600	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe	WerFault.exe
PID 2140 wrote to memory of 2600	2140	a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.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\a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe
"C:\Users\Admin\AppData\Local\Temp\a6fbdbf8efe0ea129636bb5b3d6d6faec298272a2afded7e7516f2491844abc7.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2140
- 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:2156
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 324
  2⤵
  - Program crash
  PID:2600

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

memory/2140-0-0x0000000000920000-0x00000000009FB000-memory.dmp

Filesize
876KB

Download
memory/2140-2-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2140-3-0x00000000022E0000-0x0000000002372000-memory.dmp

Filesize
584KB

Download
memory/2140-4-0x0000000000920000-0x00000000009FA000-memory.dmp

Filesize
872KB

Download
memory/2140-6-0x0000000000920000-0x00000000009FB000-memory.dmp

Filesize
876KB

Download
memory/2140-7-0x0000000000920000-0x00000000009FB000-memory.dmp

Filesize
876KB

Download
memory/2140-8-0x0000000000920000-0x00000000009FA000-memory.dmp

Filesize
872KB

Download

Analysis

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