8dee307e521a3a829a9624cfa188c4228beaa37ced2c353cbb617c3f59435049

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
09-04-2024 19:04

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General

Target

03b9f3a01bbddb3e25c1a8c435d80eee.exe
Size

93KB
MD5

03b9f3a01bbddb3e25c1a8c435d80eee
SHA1

338d7c916c1a5cad338c4fe84c2baff32b21b736
SHA256

8dee307e521a3a829a9624cfa188c4228beaa37ced2c353cbb617c3f59435049
SHA512

26e33bdd3e9b8c2b446a535b34dd42b930950691a2892228342a8cc6e1e065d7c7f080f6ad5f8b10ba525b5438eb086ede6ffceb756c0d8ce711023d11db5372
SSDEEP

1536:PBVAjmwXKECuU/Leyon6Q0zkKj512FNUHuTIFSE1mgLTABTBjiwg58:fAKmJCugqyUMkKj51YNykIFSEg9Y58

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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FAA099-1BAE-816E-D711-115290CEE717}"	03b9f3a01bbddb3e25c1a8c435d80eee.exe

Executes dropped EXE 1 IoCs

pid	Process
2140	Nkcmohbg.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Nkcmohbg.exe	03b9f3a01bbddb3e25c1a8c435d80eee.exe
File opened for modification	C:\Windows\SysWOW64\Nkcmohbg.exe	03b9f3a01bbddb3e25c1a8c435d80eee.exe
File created	C:\Windows\SysWOW64\Hnibdpde.dll	03b9f3a01bbddb3e25c1a8c435d80eee.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4468	2140	WerFault.exe	85

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ = "C:\\Windows\\SysWow64\\Hnibdpde.dll"	03b9f3a01bbddb3e25c1a8c435d80eee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ThreadingModel = "Apartment"	03b9f3a01bbddb3e25c1a8c435d80eee.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 2140	1132	03b9f3a01bbddb3e25c1a8c435d80eee.exe	85
PID 1132 wrote to memory of 2140	1132	03b9f3a01bbddb3e25c1a8c435d80eee.exe	85
PID 1132 wrote to memory of 2140	1132	03b9f3a01bbddb3e25c1a8c435d80eee.exe	85

C:\Users\Admin\AppData\Local\Temp\03b9f3a01bbddb3e25c1a8c435d80eee.exe
"C:\Users\Admin\AppData\Local\Temp\03b9f3a01bbddb3e25c1a8c435d80eee.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:1132
- C:\Windows\SysWOW64\Nkcmohbg.exe
  C:\Windows\system32\Nkcmohbg.exe
  2⤵
  - Executes dropped EXE
  PID:2140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 412
    3⤵
    - Program crash
    PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2140 -ip 2140
1⤵
PID:4128

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\Nkcmohbg.exe

Filesize
93KB

MD5
3209d50fe688b02cce61e65a060f527f

SHA1
d0565ad813af5bafab0a4f71c6e38c535868f117

SHA256
689e26f36ca7b348879ddbfca7f5f453a4f2c36fecd62077182edfc6cd3fc148

SHA512
04ad9bf057b24e43500ab790e5901622a7763759e7a9a4f3aba774f7ff0de3889edab2e4cd8033079978007b4239cd4d579b1b8912545b12e2e8bf0481390a05

Download Submit
memory/1132-0-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1132-9-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2140-8-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2140-10-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads