65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 22:51

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General

Target

65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
Size

66KB
MD5

64e0703fdb2060ad9a9b51a956395a2f
SHA1

fb6fbc8a78f093c28325577d8a2fa59a94d44985
SHA256

65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf
SHA512

0786af8d971904a1942b7cbe055235d899d455e1f1e3950a03b9d0f56fb8f6065667b36a819ebedab128e2ff0dcda6e72b0762351c8b0279d661ce2d857073dc
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXiF:IeklMMYJhqezw/pXzH9iF

Score

10^/10

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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
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
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

Executes dropped EXE 4 IoCs

pid	Process
2628	explorer.exe
2232	spoolsv.exe
4048	svchost.exe
4948	spoolsv.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	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
2628	explorer.exe
2628	explorer.exe
2628	explorer.exe
2628	explorer.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe
2628	explorer.exe
2628	explorer.exe
4048	svchost.exe
4048	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2628	explorer.exe
4048	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
2628	explorer.exe
2628	explorer.exe
2232	spoolsv.exe
2232	spoolsv.exe
4048	svchost.exe
4048	svchost.exe
4948	spoolsv.exe
4948	spoolsv.exe
2628	explorer.exe
2628	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 352 wrote to memory of 2628	352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe	83
PID 352 wrote to memory of 2628	352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe	83
PID 352 wrote to memory of 2628	352	65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe	83
PID 2628 wrote to memory of 2232	2628	explorer.exe	85
PID 2628 wrote to memory of 2232	2628	explorer.exe	85
PID 2628 wrote to memory of 2232	2628	explorer.exe	85
PID 2232 wrote to memory of 4048	2232	spoolsv.exe	86
PID 2232 wrote to memory of 4048	2232	spoolsv.exe	86
PID 2232 wrote to memory of 4048	2232	spoolsv.exe	86
PID 4048 wrote to memory of 4948	4048	svchost.exe	87
PID 4048 wrote to memory of 4948	4048	svchost.exe	87
PID 4048 wrote to memory of 4948	4048	svchost.exe	87
PID 4048 wrote to memory of 2948	4048	svchost.exe	88
PID 4048 wrote to memory of 2948	4048	svchost.exe	88
PID 4048 wrote to memory of 2948	4048	svchost.exe	88
PID 4048 wrote to memory of 1004	4048	svchost.exe	99
PID 4048 wrote to memory of 1004	4048	svchost.exe	99
PID 4048 wrote to memory of 1004	4048	svchost.exe	99
PID 4048 wrote to memory of 2472	4048	svchost.exe	101
PID 4048 wrote to memory of 2472	4048	svchost.exe	101
PID 4048 wrote to memory of 2472	4048	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe
"C:\Users\Admin\AppData\Local\Temp\65b938e7fa958188eb05272c548b5849f71826c882eacbf334e476324562cbaf.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:352
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2628
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2232
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4048
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4948
    - - C:\Windows\SysWOW64\at.exe
        
        at 22:53 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2948
    - - C:\Windows\SysWOW64\at.exe
        
        at 22:54 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1004
    - - C:\Windows\SysWOW64\at.exe
        
        at 22:55 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2472

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
66KB

MD5
2af89d9fe1ec0c792e63ba0a1226493b

SHA1
d69cf511f4c8be5094c071c24f300a96c465df46

SHA256
ccc8f2d00c3ef79e08691de1375cc1fbc19bc50fba35672fc56d90a9791d760d

SHA512
157e18ec7892d10aca80906ff460bf04b8b7d049824dc2fb13cca3a2749892ff6a8c3a7a5df6eedf645abb6f0dab765ca9e9eae18ef6b763d7cd7208cc632b1c

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
66KB

MD5
06b6c222949d8613afd7f1b667c438a8

SHA1
1d4f1ffd0bcfa7470162154e5e3c7dbf266cc722

SHA256
cde7fd72580c00ae35e8d597ff6b2fbff3a2501f61d1b9240d3eb2c2414da664

SHA512
0ec3819f30ab51e1df21c36fb6bc8bf7865ae6e0efe15f91ae6aeee38992b6f0107936ad4cd51237b86701c7fca7f5d8b1ca03bf0009c0142261483c1e18e6b1

Download Submit
C:\Windows\System\svchost.exe

Filesize
66KB

MD5
e344e8a6ccc5d88fc066b57fc5a2873d

SHA1
fbbad25eadfce4cba12f77f6d435e5c0485ff280

SHA256
bff2d1c580791e100e75a99e39a58d307e9a4b6b7d0e7f1e5d80ac3b3ff78526

SHA512
476a354aa5f9f1ec9f8a6ce74b6ff5dcfc136eeb57c92b434a1ebc2bc3b4678234834d5c8f8933edb24abc3109e70e73c6058f14ac7459c71493635f192ff3df

Download Submit
\??\c:\windows\system\explorer.exe

Filesize
66KB

MD5
a31c448cbc3f0679fcfb4773a219089e

SHA1
1ae828fe4261c88619c87dc0edb933e3925cf2ae

SHA256
07c07e5b12e9c5f21515e60e744541193c8f457281412efd0355d10b118f5816

SHA512
40c6765f2bf27c1ff731df2d83c72f79673c1246d0bc02ffef10b979dd6a552365b47d80e5cde65de1c860466601a36b7f759067fbadb5b222a0525e76084cc2

Download Submit
memory/352-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/352-2-0x0000000075B10000-0x0000000075C6D000-memory.dmp

Filesize
1.4MB

Download
memory/352-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/352-54-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/352-55-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/352-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/352-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/352-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2232-52-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2232-25-0x0000000075B10000-0x0000000075C6D000-memory.dmp

Filesize
1.4MB

Download
memory/2628-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-14-0x0000000075B10000-0x0000000075C6D000-memory.dmp

Filesize
1.4MB

Download
memory/2628-16-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2628-68-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4048-39-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4048-35-0x0000000075B10000-0x0000000075C6D000-memory.dmp

Filesize
1.4MB

Download
memory/4048-59-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4948-50-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4948-42-0x0000000075B10000-0x0000000075C6D000-memory.dmp

Filesize
1.4MB

Download