54ce7a04b71a1bbdfcfd0bf46bd1f138dee5d4554e21192d1f98d0e02694f351

Analysis

max time kernel
153s
max time network
157s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 21:53

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General

Target

Trojan-Ransom.Win32.Blocker.exe
Size

159KB
MD5

dc5c71aef24a5899f63c3f9c15993697
SHA1

2905771c826c7d9f183c73d6e97c990c022f1ef8
SHA256

54ce7a04b71a1bbdfcfd0bf46bd1f138dee5d4554e21192d1f98d0e02694f351
SHA512

f2ed34207c9f8381fcd0069c268dc3bdd4a1f7d57ea339362f23522c1157d6a9ec8c2489c5a2cca90b4213a3ed91182f94cfd45c04750d74851fdca7b1ac9f02
SSDEEP

3072:QXKzYpRZUWtMLQ3qn8JZFHWFxxxIwL0OgYe3Wwiku:QXk2RPWQ3q8/OxjL0o3Hku

Score

9^/10

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\92b5590.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\92b559 = "C:\\92b5590\\92b5590.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*2b559 = "C:\\92b5590\\92b5590.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\92b5590 = "C:\\Users\\Admin\\AppData\\Roaming\\92b5590.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*2b5590 = "C:\\Users\\Admin\\AppData\\Roaming\\92b5590.exe"	explorer.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

pid	Process
1152	vssadmin.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1636	Trojan-Ransom.Win32.Blocker.exe
1728	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	888	vssvc.exe
Token: SeRestorePrivilege	888	vssvc.exe
Token: SeAuditPrivilege	888	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1728	1636	Trojan-Ransom.Win32.Blocker.exe	27
PID 1636 wrote to memory of 1728	1636	Trojan-Ransom.Win32.Blocker.exe	27
PID 1636 wrote to memory of 1728	1636	Trojan-Ransom.Win32.Blocker.exe	27
PID 1636 wrote to memory of 1728	1636	Trojan-Ransom.Win32.Blocker.exe	27
PID 1728 wrote to memory of 1224	1728	explorer.exe	28
PID 1728 wrote to memory of 1224	1728	explorer.exe	28
PID 1728 wrote to memory of 1224	1728	explorer.exe	28
PID 1728 wrote to memory of 1224	1728	explorer.exe	28
PID 1728 wrote to memory of 1152	1728	explorer.exe	29
PID 1728 wrote to memory of 1152	1728	explorer.exe	29
PID 1728 wrote to memory of 1152	1728	explorer.exe	29
PID 1728 wrote to memory of 1152	1728	explorer.exe	29

C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\syswow64\explorer.exe
  "C:\Windows\syswow64\explorer.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Windows\syswow64\svchost.exe
    -k netsvcs
    3⤵
    PID:1224
- - C:\Windows\syswow64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1152

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact