944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 01:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
Size

67KB
MD5

f23b574fad39f213858dc68196f18cf4
SHA1

fc90f13de3f4219d2ba60c06f1accb67cac646af
SHA256

944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c
SHA512

0b0c84cd04cc65d34a4f0a6b713ba93bff86e14384e53fd4618484f273f1d8374953b03025f36d3da801d7bb3953f4ae75f61267833c0bdd1acbeb492cd871de
SSDEEP

1536:EgXsfgWQN1kYsRxWTg3PwSWe991Rdolpdz6JAkAG:1tWYfGATvPe9slp+ApG

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2652	explorer.exe
2788	spoolsv.exe
2528	svchost.exe
2980	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
2652	explorer.exe
2652	explorer.exe
2788	spoolsv.exe
2788	spoolsv.exe
2528	svchost.exe
2528	svchost.exe

Adds Run key to start application 2 TTPs 4 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\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
2652	explorer.exe
2652	explorer.exe
2652	explorer.exe
2652	explorer.exe
2528	svchost.exe
2528	svchost.exe
2528	svchost.exe
2652	explorer.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2652	explorer.exe
2528	svchost.exe
2652	explorer.exe
2528	svchost.exe
2528	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2652	explorer.exe
2528	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
2652	explorer.exe
2652	explorer.exe
2788	spoolsv.exe
2788	spoolsv.exe
2528	svchost.exe
2528	svchost.exe
2980	spoolsv.exe
2980	spoolsv.exe
2652	explorer.exe
2652	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2652	2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	30
PID 2628 wrote to memory of 2652	2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	30
PID 2628 wrote to memory of 2652	2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	30
PID 2628 wrote to memory of 2652	2628	944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe	30
PID 2652 wrote to memory of 2788	2652	explorer.exe	31
PID 2652 wrote to memory of 2788	2652	explorer.exe	31
PID 2652 wrote to memory of 2788	2652	explorer.exe	31
PID 2652 wrote to memory of 2788	2652	explorer.exe	31
PID 2788 wrote to memory of 2528	2788	spoolsv.exe	32
PID 2788 wrote to memory of 2528	2788	spoolsv.exe	32
PID 2788 wrote to memory of 2528	2788	spoolsv.exe	32
PID 2788 wrote to memory of 2528	2788	spoolsv.exe	32
PID 2528 wrote to memory of 2980	2528	svchost.exe	33
PID 2528 wrote to memory of 2980	2528	svchost.exe	33
PID 2528 wrote to memory of 2980	2528	svchost.exe	33
PID 2528 wrote to memory of 2980	2528	svchost.exe	33
PID 2528 wrote to memory of 2396	2528	svchost.exe	34
PID 2528 wrote to memory of 2396	2528	svchost.exe	34
PID 2528 wrote to memory of 2396	2528	svchost.exe	34
PID 2528 wrote to memory of 2396	2528	svchost.exe	34
PID 2528 wrote to memory of 876	2528	svchost.exe	36
PID 2528 wrote to memory of 876	2528	svchost.exe	36
PID 2528 wrote to memory of 876	2528	svchost.exe	36
PID 2528 wrote to memory of 876	2528	svchost.exe	36
PID 2528 wrote to memory of 2412	2528	svchost.exe	39
PID 2528 wrote to memory of 2412	2528	svchost.exe	39
PID 2528 wrote to memory of 2412	2528	svchost.exe	39
PID 2528 wrote to memory of 2412	2528	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe
"C:\Users\Admin\AppData\Local\Temp\944ce2e2bcee30b2efce0b366bf39e18cc1855bd824e7976db65b1a7779cb54c.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2628
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2652
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2788
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2528
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2980
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:47 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2396
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:48 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:876
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:49 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
67KB

MD5
0105984e9d15b2cd4ffcdd1463a591c1

SHA1
72dcd83579bcc81d1addcad1921189b3ca0453ca

SHA256
a5a371eeb773c45f5da02860c30bccd3a587c412f1d974bc0114160864470de3

SHA512
82cef159dacf57046e51c60e98280d8d58b3e00bc5c2274454796a65a723ec2d231c2e7e6fe51998e3eb4c7a8a5bb5f1a0cea178997a45603467ab84692c6e3e

Download Submit
\Windows\system\explorer.exe

Filesize
67KB

MD5
08e1ca32661e22df425b1af2144f418a

SHA1
d11a4544c2e48dbbcd09b34d6f29b37010b2daa3

SHA256
d037b290f189fb55d3659b64782330db5788f04852cd2521333af738202cd7ec

SHA512
eb4b68c25ace971302d97d174be064e89fe2bf94614daa72fa0e7b80a145524b7ec6236ef1d3420a2b3d1746880ee5862c6cb949f0811d54545c29d8031040e6

Download Submit
\Windows\system\spoolsv.exe

Filesize
67KB

MD5
5bf046b2cbcf6b8c2a4f822f2ca8832a

SHA1
0f2d51268150cd14fefbf24a6950dc3a0768588f

SHA256
75fdf2bc91d55be4456305e8a016db154e1bb84f76947aec9fd2cb76a2ba6210

SHA512
1da769fa50af1062f7e95a2b3013312b94dff7f58413e5a02c4b6edba5c08a41132dfff3f0dcb5e2f3e724a6b814381761e88ba8cc313959335c15ba5bf90268

Download Submit
\Windows\system\svchost.exe

Filesize
67KB

MD5
4101962f6ca20d0b2fb3071bc5d473ee

SHA1
6ad36cae8dbc424c02d1b2cf1ea87d2c216ac8ed

SHA256
a0266731ff3f87c0db0d4e45545664872bc1d8385db205e2cfc345a6bc75a02c

SHA512
8c319cf10385ec35ed4d00cde620b1d48ee217189e09bde542ebe28b30ca6bfcb074f99bb4e48445e9d14a98184345657ffa94878f2aa3917810058d048fe071

Download Submit
memory/2528-54-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2528-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2528-79-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-12-0x0000000003260000-0x0000000003291000-memory.dmp

Filesize
196KB

Download
memory/2628-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2628-76-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-77-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2628-2-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2628-46-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2628-1-0x0000000000020000-0x0000000000024000-memory.dmp

Filesize
16KB

Download
memory/2652-20-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2652-58-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2652-33-0x00000000007D0000-0x0000000000801000-memory.dmp

Filesize
196KB

Download
memory/2652-80-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2652-92-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2652-18-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2788-52-0x00000000024C0000-0x00000000024F1000-memory.dmp

Filesize
196KB

Download
memory/2788-74-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2788-40-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2788-36-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2788-35-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2980-65-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2980-71-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download