e8fcbb9a903ab5bbabf27c37d6333232bb832126f10551bf8a2420dfac616b56

Analysis

max time kernel
163s
max time network
177s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 18:53

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General

Target

d3caf175fabc265c3cf49125144a4ac1.exe
Size

64KB
MD5

d3caf175fabc265c3cf49125144a4ac1
SHA1

b1fcea8e32c79c49d3812014a3599fb599d009d2
SHA256

e8fcbb9a903ab5bbabf27c37d6333232bb832126f10551bf8a2420dfac616b56
SHA512

35cdaa46f7235c6b87588117ec1a0b10f446dd7f2c858d82d396870e949c67f09d9a55f3dd38ecf94e9594fc1855efb7cc40a9523e8564e2874e63a90d189f60
SSDEEP

768:XANOxr7P+txLHrLIuWqYiCKCGMq0H4c9xaMGFo4K2p/1H5XPXdnh0Usb0DWBi:XAcl7kr4uR+G8H4OaMd2LbrDWBi

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FEACFF-FFCE-815E-A900-316290B5B738}"	d3caf175fabc265c3cf49125144a4ac1.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	d3caf175fabc265c3cf49125144a4ac1.exe

Executes dropped EXE 1 IoCs

pid	Process
3356	Amhdmi32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Amhdmi32.exe	d3caf175fabc265c3cf49125144a4ac1.exe
File created	C:\Windows\SysWOW64\Ejcdfahd.dll	d3caf175fabc265c3cf49125144a4ac1.exe
File created	C:\Windows\SysWOW64\Amhdmi32.exe	d3caf175fabc265c3cf49125144a4ac1.exe

Modifies registry class 6 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ = "C:\\Windows\\SysWow64\\Ejcdfahd.dll"	d3caf175fabc265c3cf49125144a4ac1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32\ThreadingModel = "Apartment"	d3caf175fabc265c3cf49125144a4ac1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}\InProcServer32	d3caf175fabc265c3cf49125144a4ac1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	d3caf175fabc265c3cf49125144a4ac1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	d3caf175fabc265c3cf49125144a4ac1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FEACFF-FFCE-815E-A900-316290B5B738}	d3caf175fabc265c3cf49125144a4ac1.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 3356	3708	d3caf175fabc265c3cf49125144a4ac1.exe	93
PID 3708 wrote to memory of 3356	3708	d3caf175fabc265c3cf49125144a4ac1.exe	93
PID 3708 wrote to memory of 3356	3708	d3caf175fabc265c3cf49125144a4ac1.exe	93

C:\Users\Admin\AppData\Local\Temp\d3caf175fabc265c3cf49125144a4ac1.exe
"C:\Users\Admin\AppData\Local\Temp\d3caf175fabc265c3cf49125144a4ac1.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\SysWOW64\Amhdmi32.exe
  C:\Windows\system32\Amhdmi32.exe
  2⤵
  - Executes dropped EXE
  PID:3356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Amhdmi32.exe

Filesize
64KB

MD5
7f724d6308b21c8826eeb6b17cd0aeae

SHA1
166105e5dd3065281844c10e64a48dcc4b399f61

SHA256
ae35107f8464f25132c269ed4c5e3cbd0559a31c3b28de61d50ed2ccc5a4ba8a

SHA512
2af103cd10d95f56c1a4a29db5d86b715da7d932525a0507d41610e5868793b5f5f5b45ac785c4a943ae80dd548665750e12fd648172cad067b6bdf0d6c00855

Download Submit
memory/3356-10-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3356-12-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3708-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3708-1-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3708-8-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads