51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597

General

Target

51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
Size

7.0MB
MD5

4dcc665d1ca0449ca8f3848c6dd4b0d6
SHA1

97c601f5d8ce771dcd7c16fae565b24b51bff92f
SHA256

51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597
SHA512

1e37df75348e3af9730c9d48ed0974e4207a5dd46e8c58ccfde126fef8bb7e4bc83ff7b09dd25b93009d60a091bb18023835b730c973e8252f77373da016cce4
SSDEEP

196608:dHVvwWB528rX22T3IjJx+2UTiADupsf+287nQR7L:/BB72sOADuB7nC

Score

9^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe

Modifies registry class 26 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 500031000000000066570d05100041646d696e003c0009000400efbe5757415f66570d052e00000078e101000000010000000000000000000000000000001dee2701410064006d0069006e00000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 78003100000000005757415f1100557365727300640009000400efbe874f774866570c052e000000c70500000000010000000000000000003a000000000039e00f0155007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4824	notepad.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2040	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2040	explorer.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
2040	explorer.exe
2040	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 4616	2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe	91
PID 2072 wrote to memory of 4616	2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe	91
PID 4616 wrote to memory of 3960	4616	cmd.exe	93
PID 4616 wrote to memory of 3960	4616	cmd.exe	93
PID 2072 wrote to memory of 1688	2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe	95
PID 2072 wrote to memory of 1688	2072	51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe	95
PID 1688 wrote to memory of 4824	1688	cmd.exe	97
PID 1688 wrote to memory of 4824	1688	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe
"C:\Users\Admin\AppData\Local\Temp\51f54d87b6c9908b5ed532af24531dd049f2148ce7436904136ca1bd74cbc597.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c explorer/select,C:\Users\Admin\HELanguage.hel
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\explorer.exe
    explorer /select,C:\Users\Admin\HELanguage.hel
    3⤵
    PID:3960
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start notepad C:\Users\Admin\HELanguage.hel
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1688
- - C:\Windows\system32\notepad.exe
    notepad C:\Users\Admin\HELanguage.hel
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:4824

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2040

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\HELanguage.hel

Filesize
9KB

MD5
3823c29c8fe18e23a5fae0e3d6b532ed

SHA1
d6a6bb56a26f3a7b7a8f894237318b62d5fae432

SHA256
a6226bfc3c5765048346a2ca643495269ff8b737a9ccd0b54f3d7e16920a3906

SHA512
0fcf14683ecc0d485124f77bb431d1b8344bd3f0d1691ee747964bf3d5c97e48aa146d485d7384c72c776d41aa358835d44381dfe1f00dbbe24405fb0d1aae6d

Download Submit
memory/2072-5-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-11-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-4-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-0-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-6-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-7-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-3-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-8-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-10-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-9-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-17-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-1-0x00007FF907C50000-0x00007FF907E45000-memory.dmp

Filesize
2.0MB

Download
memory/2072-19-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-20-0x00007FF907C50000-0x00007FF907E45000-memory.dmp

Filesize
2.0MB

Download
memory/2072-21-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download
memory/2072-23-0x00007FF651300000-0x00007FF6523FC000-memory.dmp

Filesize
17.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads