1d0799de8e01ed4b223ed6e00d6e51cf8fcfc3142b9b794a901fb9baa3b4ecda

Analysis

max time kernel
144s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
10/01/2024, 19:20

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General

Target

36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Size

13KB
MD5

36f0e4ed75a4cbbe79b1a7105bbb3995
SHA1

f9c8792aa1d0544a41effe50d0c33378bd977a5c
SHA256

1d0799de8e01ed4b223ed6e00d6e51cf8fcfc3142b9b794a901fb9baa3b4ecda
SHA512

c19fd65c087d2946f4045535dc21ed52e9e8fc15b049479d1af00207558c010e9d5921e5765bb3136d9d1e982cecc4cfadb0db4b10705be4d8e8586a54dcb47d
SSDEEP

192:m51V1upEMYREAW6tHwK1igssEcX4jXv+quAOhWEUmJA0B/CPd1jjkEp0hq:U/EA11MpXvagqkbjjkk0Q

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies Shared Task Scheduler registry keys 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\Explorer\SharedTaskScheduler	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler\{786C369D-409A-456f-A13C-971EADA850C6} = "DertertDE"	36f0e4ed75a4cbbe79b1a7105bbb3995.exe

Loads dropped DLL 1 IoCs

pid	Process
3888	rundll32.exe

Registers COM server for autorun 1 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32\ = "C:\\Windows\\SysWow64\\birdasfihuy32.dll"	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32\ThreadingModel = "Apartment"	36f0e4ed75a4cbbe79b1a7105bbb3995.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2232-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/2232-5-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\birdasfihuy32.dll	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
File created	C:\Windows\SysWOW64\biasfardihuy.dll	36f0e4ed75a4cbbe79b1a7105bbb3995.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32\ = "C:\\Windows\\SysWow64\\birdasfihuy32.dll"	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32\ThreadingModel = "Apartment"	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node\CLSID\{786C369D-409A-456f-A13C-971EADA850C6}\InProcServer32	36f0e4ed75a4cbbe79b1a7105bbb3995.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\WOW6432Node	36f0e4ed75a4cbbe79b1a7105bbb3995.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 3888	2232	36f0e4ed75a4cbbe79b1a7105bbb3995.exe	91
PID 2232 wrote to memory of 3888	2232	36f0e4ed75a4cbbe79b1a7105bbb3995.exe	91
PID 2232 wrote to memory of 3888	2232	36f0e4ed75a4cbbe79b1a7105bbb3995.exe	91

C:\Users\Admin\AppData\Local\Temp\36f0e4ed75a4cbbe79b1a7105bbb3995.exe
"C:\Users\Admin\AppData\Local\Temp\36f0e4ed75a4cbbe79b1a7105bbb3995.exe"
1⤵
- Modifies Shared Task Scheduler registry keys
- Registers COM server for autorun
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\birdasfihuy32.dll, load
  2⤵
  - Loads dropped DLL
  PID:3888

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\birdasfihuy32.dll

Filesize
28KB

MD5
4d837e1558925bc0f5e877f5622e3d72

SHA1
81e55afedf9e5cbdb7de3d0a706e4902cf6466c8

SHA256
75ee404677b89dff50e0df72052158ef2d06245c8601af00c19cab70fa929b1c

SHA512
7c55da66f18ec44cd2793ac72901ed11e437865d98f69402e66a75cbab4dfb419ba3f258b52ae374b9d10ff2083df16bb40437768491b52adaa30e33a32fcad4

Download Submit
memory/2232-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2232-5-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads