fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 02:09

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General

Target

fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
Size

135KB
MD5

5cce295f1ee69d425efce8fead025570
SHA1

0d8568f147661df587684dac99bc7dd8446da01b
SHA256

fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512
SHA512

1b11c177fc7747206d8cbdce5a1b9f0ab32db18006cf65e53bff2d3130a0ba3d23dcd124d2d1637ff273b537662a8a93ccf8463b8ff7966f6f77c630a9557ba7
SSDEEP

3072:UVqoCl/YgjxEufVU0TbTyDDalAFp9VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVo:UsLqdufVUNDaWa

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2828	explorer.exe
2800	spoolsv.exe
2912	svchost.exe
2768	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2828	explorer.exe
2800	spoolsv.exe
2912	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\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
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	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3008	schtasks.exe
2064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2912	svchost.exe
2828	explorer.exe
2912	svchost.exe
2912	svchost.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2912	svchost.exe
2912	svchost.exe
2828	explorer.exe
2912	svchost.exe
2828	explorer.exe
2828	explorer.exe
2912	svchost.exe
2912	svchost.exe
2828	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2912	svchost.exe
2828	explorer.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
2828	explorer.exe
2828	explorer.exe
2800	spoolsv.exe
2800	spoolsv.exe
2912	svchost.exe
2912	svchost.exe
2768	spoolsv.exe
2768	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2828	2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe	30
PID 2704 wrote to memory of 2828	2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe	30
PID 2704 wrote to memory of 2828	2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe	30
PID 2704 wrote to memory of 2828	2704	fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe	30
PID 2828 wrote to memory of 2800	2828	explorer.exe	31
PID 2828 wrote to memory of 2800	2828	explorer.exe	31
PID 2828 wrote to memory of 2800	2828	explorer.exe	31
PID 2828 wrote to memory of 2800	2828	explorer.exe	31
PID 2800 wrote to memory of 2912	2800	spoolsv.exe	32
PID 2800 wrote to memory of 2912	2800	spoolsv.exe	32
PID 2800 wrote to memory of 2912	2800	spoolsv.exe	32
PID 2800 wrote to memory of 2912	2800	spoolsv.exe	32
PID 2912 wrote to memory of 2768	2912	svchost.exe	33
PID 2912 wrote to memory of 2768	2912	svchost.exe	33
PID 2912 wrote to memory of 2768	2912	svchost.exe	33
PID 2912 wrote to memory of 2768	2912	svchost.exe	33
PID 2828 wrote to memory of 2624	2828	explorer.exe	34
PID 2828 wrote to memory of 2624	2828	explorer.exe	34
PID 2828 wrote to memory of 2624	2828	explorer.exe	34
PID 2828 wrote to memory of 2624	2828	explorer.exe	34
PID 2912 wrote to memory of 3008	2912	svchost.exe	35
PID 2912 wrote to memory of 3008	2912	svchost.exe	35
PID 2912 wrote to memory of 3008	2912	svchost.exe	35
PID 2912 wrote to memory of 3008	2912	svchost.exe	35
PID 2912 wrote to memory of 2064	2912	svchost.exe	38
PID 2912 wrote to memory of 2064	2912	svchost.exe	38
PID 2912 wrote to memory of 2064	2912	svchost.exe	38
PID 2912 wrote to memory of 2064	2912	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.exe
"C:\Users\Admin\AppData\Local\Temp\fb0ccd8ab9273d7d768043175371ff68a5cc97c577124844e6d3c006b46d5512N.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:2704
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - 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:2828
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\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:2800
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2912
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2768
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:11 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:3008
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:12 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2064
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
e6014d7cf8e38374bfa3df8f8ea49f71

SHA1
2062e4173f79346ce1f5139ba295b713ce81ec0d

SHA256
57931f01042e821e5de42a0bf253350f2cd895469176688a05973e41dc829b4c

SHA512
b5dc7f12884415dd7b73cca57448b1bde3b11fdd083e7d5f392b89fa913d547f3c02842b060708265e39e0fab66cdc3b7939e2e5b1cebb599b96edf6768156b3

Download Submit
\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
0d6546a1b0d8750082d69d42dcbf03ad

SHA1
14186e7fa2cd97e4a9778441a9c082eaab5a817b

SHA256
c857fccbcff53b489867ad6f2fd980e22707a6ef43f9cdcc5bcdb6706d2aa620

SHA512
20844a0c37784cf508d902239ec7f04a175501cf62d6818008112fa943331fd8bb96c76e0a6600f879e952e92c2d96c70d7636c4a5d1f7fd87a493838b63b671

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
65596178f7be7b7ee06c2d5a719f2924

SHA1
d388c94b9f0a2c3bdb3cee4ee5acf0898e4081ff

SHA256
b01870973e86696a4a59e14210bc0d52ced951e6bde8187b24cfa3d6ba7788c5

SHA512
3876ddb7a6d36de0edbf53cec1778b7c9db8c41072b4a5e53c73784dd81a7f406f46ddb473ae1337d92d2e68bf6e015e42c3b31aa4087090af8aee6314fa696e

Download Submit
memory/2704-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2704-9-0x0000000000380000-0x000000000039F000-memory.dmp

Filesize
124KB

Download
memory/2704-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2768-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2800-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-45-0x00000000002B0000-0x00000000002CF000-memory.dmp

Filesize
124KB

Download
memory/2912-36-0x00000000002F0000-0x000000000030F000-memory.dmp

Filesize
124KB

Download
memory/2912-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download