ab70718453b398f9ec798d5150c51f0ccb91de22345388e00cd94a0ec42d9d95

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 20:10

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General

Target

3af1558bce50b6a2393dbf3aa23b6685.exe
Size

83KB
MD5

3af1558bce50b6a2393dbf3aa23b6685
SHA1

411ff922a2cb6162ae336c8104b72e500b5b709d
SHA256

ab70718453b398f9ec798d5150c51f0ccb91de22345388e00cd94a0ec42d9d95
SHA512

53b2fd03e7a8f2fc3f7f9a30706f10ab7f7aacd446448290be25670353975a86284e52e410c093c3b88cc1557883ec3d50f222183a597af25f86fb062785427d
SSDEEP

1536:0OgrF9Gj6Fz4EVCQbLs8yRGBl14FaYMswlL5n+XVFlxkBp6WJ1GsNJOfbFqD:0Jyjkwu6FaYMswbnmVTxkBp6WJUs7OFq

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\WinDir = "{bfbc1a78-cddd-1672-876e-324d6c4686e9}"	3af1558bce50b6a2393dbf3aa23b6685.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	3af1558bce50b6a2393dbf3aa23b6685.exe

Loads dropped DLL 1 IoCs

pid	Process
4588	3af1558bce50b6a2393dbf3aa23b6685.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\NTboot.exe	3af1558bce50b6a2393dbf3aa23b6685.exe
File created	C:\Windows\SysWOW64\NTboot32.dll	3af1558bce50b6a2393dbf3aa23b6685.exe
File created	C:\Windows\SysWOW64\NTboot.exe	3af1558bce50b6a2393dbf3aa23b6685.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	3af1558bce50b6a2393dbf3aa23b6685.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bfbc1a78-cddd-1672-876e-324d6c4686e9}	3af1558bce50b6a2393dbf3aa23b6685.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bfbc1a78-cddd-1672-876e-324d6c4686e9}\InProcServer32\ = "NTboot32.dll"	3af1558bce50b6a2393dbf3aa23b6685.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bfbc1a78-cddd-1672-876e-324d6c4686e9}\InProcServer32\ThreadingModel = "Apartment"	3af1558bce50b6a2393dbf3aa23b6685.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{bfbc1a78-cddd-1672-876e-324d6c4686e9}\InProcServer32	3af1558bce50b6a2393dbf3aa23b6685.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	3af1558bce50b6a2393dbf3aa23b6685.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe
4588	3af1558bce50b6a2393dbf3aa23b6685.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	3af1558bce50b6a2393dbf3aa23b6685.exe
Token: SeIncBasePriorityPrivilege	4588	3af1558bce50b6a2393dbf3aa23b6685.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 3132	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	16
PID 4588 wrote to memory of 3132	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	16
PID 4588 wrote to memory of 3132	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	16
PID 4588 wrote to memory of 3132	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	16
PID 4588 wrote to memory of 3296	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	97
PID 4588 wrote to memory of 3296	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	97
PID 4588 wrote to memory of 3296	4588	3af1558bce50b6a2393dbf3aa23b6685.exe	97

C:\Users\Admin\AppData\Local\Temp\3af1558bce50b6a2393dbf3aa23b6685.exe
"C:\Users\Admin\AppData\Local\Temp\3af1558bce50b6a2393dbf3aa23b6685.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe"
  2⤵
  PID:3132
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\3AF155~1.EXE > nul
  2⤵
  PID:3296

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\NTboot32.dll

Filesize
132KB

MD5
e4fe4485807c5c0d5324c33560e5b93d

SHA1
d2720527e9b65c221a0fe57ea30a5e4cd76aa1f7

SHA256
f189615c83e1a53a833105242ed30e257b8d7cb4fdcd3f9d31bbc3cc09b047bd

SHA512
0e52e63d6195bbe7ef384bd43906b19da99e5d197b1b7d9c35190465bb9f957758f8c6e6ded7a9669ee9636cc9b6d38bc4217fa4df4c412c15ddd7499aa0e0d7

Download Submit
memory/4588-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4588-6-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download