73e5e04afae3801cbadde703045d1a4ad8c8c29c8120ee091bc226e58ccdb715

Analysis

max time kernel
122s
max time network
133s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 03:31

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General

Target

033461e1a1e0afbb2de1e56488c4c816.exe
Size

26KB
MD5

033461e1a1e0afbb2de1e56488c4c816
SHA1

02977e132baee83024aeabdd9768765772508f3a
SHA256

73e5e04afae3801cbadde703045d1a4ad8c8c29c8120ee091bc226e58ccdb715
SHA512

293caeca03c8695ea169f16e6463b15cc41595b55dcafb68ad353f0e3f68569f3aa2a497bf8b9d05e232abcdfba6152a9195b62e9e97284bc89e0f5b672c7b02
SSDEEP

384:ximQrpRZPN37o04YBUqe4YJ0oJ2Pdo4E24JEv7ceAay3J:bQ1jV8LEUcgqvtAe/y3J

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3020	mcsmss.exe

Loads dropped DLL 2 IoCs

pid	Process
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe

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\cmssSystemProcess = "c:\\windows\\system32\\mcsmss.exe"	033461e1a1e0afbb2de1e56488c4c816.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\mcsmss.exe	033461e1a1e0afbb2de1e56488c4c816.exe
File opened for modification	\??\c:\windows\SysWOW64\mcsmss.exe	033461e1a1e0afbb2de1e56488c4c816.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
2108	033461e1a1e0afbb2de1e56488c4c816.exe
3020	mcsmss.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2108	033461e1a1e0afbb2de1e56488c4c816.exe
3020	mcsmss.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 3020	2108	033461e1a1e0afbb2de1e56488c4c816.exe	28
PID 2108 wrote to memory of 3020	2108	033461e1a1e0afbb2de1e56488c4c816.exe	28
PID 2108 wrote to memory of 3020	2108	033461e1a1e0afbb2de1e56488c4c816.exe	28
PID 2108 wrote to memory of 3020	2108	033461e1a1e0afbb2de1e56488c4c816.exe	28

C:\Users\Admin\AppData\Local\Temp\033461e1a1e0afbb2de1e56488c4c816.exe
"C:\Users\Admin\AppData\Local\Temp\033461e1a1e0afbb2de1e56488c4c816.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2108
- C:\windows\SysWOW64\mcsmss.exe
  "C:\windows\system32\mcsmss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3020

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 Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Windows\SysWOW64\mcsmss.exe

Filesize
26KB

MD5
033461e1a1e0afbb2de1e56488c4c816

SHA1
02977e132baee83024aeabdd9768765772508f3a

SHA256
73e5e04afae3801cbadde703045d1a4ad8c8c29c8120ee091bc226e58ccdb715

SHA512
293caeca03c8695ea169f16e6463b15cc41595b55dcafb68ad353f0e3f68569f3aa2a497bf8b9d05e232abcdfba6152a9195b62e9e97284bc89e0f5b672c7b02

Download Submit
memory/2108-0-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2108-10-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3020-11-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3020-12-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download