75fb6872dca0bf3598c17e011f8cda935e7b93e7a7b63f109d61f491fca0c643

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 19:16

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General

Target

373c8aa42ba6d9107d9768f698f38838.exe
Size

18KB
MD5

373c8aa42ba6d9107d9768f698f38838
SHA1

eb09190164947696649fdf8b7bad0cd86d787e5b
SHA256

75fb6872dca0bf3598c17e011f8cda935e7b93e7a7b63f109d61f491fca0c643
SHA512

f7bf0576ce10c35fb33df30c2786fef148a048625052c5623e4bd2867d402467b2cb8e6a9e5ce712bdd996c939db9a8d1636cb4a70a58e39be58d5198b11b46e
SSDEEP

384:22B5qa6ngcMDBd5184bzhI/z2wQkSsCD+YKJ0wj:Tbz84iL2wQLsCT

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2924	373c8aa42ba6d9107d9768f698f38838.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2924-0-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/2924-20-0x0000000000400000-0x0000000000411000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 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\RUN\fmcbbqi = "C:\\Windows\\fmcbbqi.exe"	373c8aa42ba6d9107d9768f698f38838.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fmcbbqi.dll	373c8aa42ba6d9107d9768f698f38838.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\fmcbbqi.exe	373c8aa42ba6d9107d9768f698f38838.exe
File opened for modification	C:\Windows\fmcbbqi.exe	373c8aa42ba6d9107d9768f698f38838.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2924	373c8aa42ba6d9107d9768f698f38838.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2924	373c8aa42ba6d9107d9768f698f38838.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 1216	2924	373c8aa42ba6d9107d9768f698f38838.exe	6
PID 2924 wrote to memory of 1216	2924	373c8aa42ba6d9107d9768f698f38838.exe	6

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1216
- C:\Users\Admin\AppData\Local\Temp\373c8aa42ba6d9107d9768f698f38838.exe
  "C:\Users\Admin\AppData\Local\Temp\373c8aa42ba6d9107d9768f698f38838.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2924

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

memory/1216-3-0x0000000002A60000-0x0000000002A61000-memory.dmp

Filesize
4KB

Download
memory/2924-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2924-20-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2924-16-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2924-12-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download