f8ea29e5d290c4fc61d6c1a628ddcdfcd020e3279894005f9c2e5f3ac0440d2f

Analysis

max time kernel
151s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 06:47

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General

Target

Trojan-Ransom.Win32.Blocker.exe
Size

4.3MB
MD5

f20398f054b01176d840c50cd1da50e8
SHA1

5799bbed633e61616af765a4016d3c5d254c43f8
SHA256

f8ea29e5d290c4fc61d6c1a628ddcdfcd020e3279894005f9c2e5f3ac0440d2f
SHA512

f59580fd802543b27a768f607c051aa9adf2563c741ab6e1303ca0b917a4c438811fd25a381dcf11c1800dc617a1dffa155a2e4ae0df94cad2154abe22dbdd0a
SSDEEP

98304:vfMOM+OKvL2ZOaHqe6ioUeQZk/FEXf9VX6Bkwlnx+6cB:vEjKDre6iZq/2lBePC6c

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Trojan-Ransom.Win32.Blocker.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\SysWOW64\drivers\placax.sys	Trojan-Ransom.Win32.Blocker.exe

Sets service image path in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\placax\ImagePath = "system32\\drivers\\placax.sys"	Trojan-Ransom.Win32.Blocker.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\impressorax\ImagePath = "system32\\drivers\\impressorax.sys"	Trojan-Ransom.Win32.Blocker.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	Trojan-Ransom.Win32.Blocker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Local\\ctfmor.exe"	Trojan-Ransom.Win32.Blocker.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Trojan-Ransom.Win32.Blocker.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1520	892	WerFault.exe	15

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
460	Process not Found
460	Process not Found

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 1520	892	Trojan-Ransom.Win32.Blocker.exe	27
PID 892 wrote to memory of 1520	892	Trojan-Ransom.Win32.Blocker.exe	27
PID 892 wrote to memory of 1520	892	Trojan-Ransom.Win32.Blocker.exe	27
PID 892 wrote to memory of 1520	892	Trojan-Ransom.Win32.Blocker.exe	27

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	Trojan-Ransom.Win32.Blocker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Trojan-Ransom.Win32.Blocker.exe

C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
1⤵
- UAC bypass
- Drops file in Drivers directory
- Sets service image path in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 572
  2⤵
  - Program crash
  PID:1520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/892-54-0x0000000000400000-0x00000000018BD000-memory.dmp

Filesize
20.7MB

Download
memory/892-55-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/892-56-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/892-57-0x00000000003E0000-0x00000000003EE000-memory.dmp

Filesize
56KB

Download
memory/892-58-0x0000000005790000-0x00000000058EC000-memory.dmp

Filesize
1.4MB

Download
memory/892-60-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/892-61-0x0000000000400000-0x00000000018BD000-memory.dmp

Filesize
20.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads