ec8d9ef8d99f6ec9a664dfbcfd924815c7e383a1dad88c4797f8baa00ca3a34b

Analysis

max time kernel
100s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 00:49

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General

Target

75acde9221d6b38c8a2547d8bf9202f0N.exe
Size

15KB
MD5

75acde9221d6b38c8a2547d8bf9202f0
SHA1

3f966428543cc1bcb187a8cafc516322c97fc202
SHA256

ec8d9ef8d99f6ec9a664dfbcfd924815c7e383a1dad88c4797f8baa00ca3a34b
SHA512

cecaf96763370d38fb6d67acf2907c8bdf01e5cc68435e6dc5754996ff6ddcf6d657d6e5203b63152e756a85fc0772b3eb9d64437a046375795db43d8bcf4531
SSDEEP

384:kYho7iQAtR/zv87udVieokSSrOtEaq+hciduuLT+tkUGEg:uATTAud/atJTLLKSUGEg

Score

8^/10

discovery persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	LYLOADER.EXE

Deletes itself 1 IoCs

pid	Process
4528	LYLOADER.EXE

Executes dropped EXE 1 IoCs

pid	Process
4528	LYLOADER.EXE

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDEG32.DLL	LYLOADER.EXE
File created	C:\Windows\SysWOW64\REGKEY.hiv	LYLOADER.EXE
File created	C:\Windows\SysWOW64\LYMANGR.DLL	LYLOADER.EXE

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	75acde9221d6b38c8a2547d8bf9202f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LYLOADER.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4528	LYLOADER.EXE
4528	LYLOADER.EXE
4528	LYLOADER.EXE
4528	LYLOADER.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	4528	LYLOADER.EXE
Token: SeDebugPrivilege	4528	LYLOADER.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 4528	744	75acde9221d6b38c8a2547d8bf9202f0N.exe	86
PID 744 wrote to memory of 4528	744	75acde9221d6b38c8a2547d8bf9202f0N.exe	86
PID 744 wrote to memory of 4528	744	75acde9221d6b38c8a2547d8bf9202f0N.exe	86
PID 4528 wrote to memory of 3532	4528	LYLOADER.EXE	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3532
- C:\Users\Admin\AppData\Local\Temp\75acde9221d6b38c8a2547d8bf9202f0N.exe
  "C:\Users\Admin\AppData\Local\Temp\75acde9221d6b38c8a2547d8bf9202f0N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:744
- - C:\Users\Admin\AppData\Local\Temp\LYLOADER.EXE
    C:\Users\Admin\AppData\Local\Temp\LYLOADER.EXE "C:\Users\Admin\AppData\Local\Temp\75acde9221d6b38c8a2547d8bf9202f0N.exe"
    3⤵
    - Adds policy Run key to start application
    - Deletes itself
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4528

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\LYLOADER.EXE

Filesize
11KB

MD5
e5a44f73aca316bb65072d6f8fc76e1c

SHA1
dd0cca6f2279ff07b35c2e8631b030169e699abe

SHA256
646c9ebf22bd8f944628cc33ad45700b87fd3fbc0fe6304dbfcff5c3045b56f8

SHA512
235cefd8cd1f3ea8081f52f0a9aa076c73b47e0026bcac7045f091e2e8c91f3a2eae70c2391ad3cf974f84da48801587c7b0a242d96677297e8dc5d245d25332

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