85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 00:07

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General

Target

85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
Size

135KB
MD5

3d5b34e335d85f49fc6b03a1300e6636
SHA1

3deff9130e77c44199c338f70a9acb5a78ca0c9c
SHA256

85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08
SHA512

a884d88358503ac03309efc783b9f1926ea52b26b2f7ebe3acec8b503af0a6785dbe6e8e9df81ab6644b857a52f57292f455ca63236ffb8b52a44df3fd4b7608
SSDEEP

3072:4VqoCl/YgjxEufVU0TbTyDDalqfOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPu:4sLqdufVUNDaAGPPPPPPPPPPPPPPPPPu

Score

10^/10

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2728	explorer.exe
2548	spoolsv.exe
2864	svchost.exe
2712	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2728	explorer.exe
2548	spoolsv.exe
2864	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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.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	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.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

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2664	schtasks.exe
1940	schtasks.exe
1504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2728	explorer.exe
2728	explorer.exe
2728	explorer.exe
2864	svchost.exe
2864	svchost.exe
2728	explorer.exe
2864	svchost.exe
2728	explorer.exe
2864	svchost.exe
2728	explorer.exe
2864	svchost.exe
2728	explorer.exe
2864	svchost.exe
2728	explorer.exe
2864	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2728	explorer.exe
2864	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
2728	explorer.exe
2728	explorer.exe
2548	spoolsv.exe
2548	spoolsv.exe
2864	svchost.exe
2864	svchost.exe
2712	spoolsv.exe
2712	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2728	2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe	28
PID 2084 wrote to memory of 2728	2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe	28
PID 2084 wrote to memory of 2728	2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe	28
PID 2084 wrote to memory of 2728	2084	85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe	28
PID 2728 wrote to memory of 2548	2728	explorer.exe	29
PID 2728 wrote to memory of 2548	2728	explorer.exe	29
PID 2728 wrote to memory of 2548	2728	explorer.exe	29
PID 2728 wrote to memory of 2548	2728	explorer.exe	29
PID 2548 wrote to memory of 2864	2548	spoolsv.exe	30
PID 2548 wrote to memory of 2864	2548	spoolsv.exe	30
PID 2548 wrote to memory of 2864	2548	spoolsv.exe	30
PID 2548 wrote to memory of 2864	2548	spoolsv.exe	30
PID 2864 wrote to memory of 2712	2864	svchost.exe	31
PID 2864 wrote to memory of 2712	2864	svchost.exe	31
PID 2864 wrote to memory of 2712	2864	svchost.exe	31
PID 2864 wrote to memory of 2712	2864	svchost.exe	31
PID 2728 wrote to memory of 2584	2728	explorer.exe	32
PID 2728 wrote to memory of 2584	2728	explorer.exe	32
PID 2728 wrote to memory of 2584	2728	explorer.exe	32
PID 2728 wrote to memory of 2584	2728	explorer.exe	32
PID 2864 wrote to memory of 1504	2864	svchost.exe	33
PID 2864 wrote to memory of 1504	2864	svchost.exe	33
PID 2864 wrote to memory of 1504	2864	svchost.exe	33
PID 2864 wrote to memory of 1504	2864	svchost.exe	33
PID 2864 wrote to memory of 2664	2864	svchost.exe	38
PID 2864 wrote to memory of 2664	2864	svchost.exe	38
PID 2864 wrote to memory of 2664	2864	svchost.exe	38
PID 2864 wrote to memory of 2664	2864	svchost.exe	38
PID 2864 wrote to memory of 1940	2864	svchost.exe	40
PID 2864 wrote to memory of 1940	2864	svchost.exe	40
PID 2864 wrote to memory of 1940	2864	svchost.exe	40
PID 2864 wrote to memory of 1940	2864	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe
"C:\Users\Admin\AppData\Local\Temp\85ced5bf81b2f424eeba3369f9e96a5c8d4495bccbe143d6836c02cd626cbd08.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2084
- \??\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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2728
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2548
  - - \??\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
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2864
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2712
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:09 /f
        5⤵
        Creates scheduled task(s)
        
        PID:1504
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:10 /f
        5⤵
        Creates scheduled task(s)
        
        PID:2664
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:11 /f
        5⤵
        Creates scheduled task(s)
        
        PID:1940
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
e6f26f6729d9b703a58bf0cfd42330ed

SHA1
9e1cd934c37bf43725e9368d7a342285c58bec4a

SHA256
12a27513a44bf37466ce56760e7bfb5c43e8b227a49405624149fd32eef60a12

SHA512
aa2ddcc1f46b95ea74ae799caf66d0277d1b84b8c66da9f9e062d2d19cbad2d6cc74fbab717a3f540418d02d1c4d0623ce73800817e76ec8f69a790c6d9b9af8

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

Filesize
135KB

MD5
d81819643560ddbb099d789e6c37bf64

SHA1
ee68ce5f8db4a3e6fe6a894da408ff17ba8995c7

SHA256
976b13a9065bf9462210b7fb05f0eb36f5dcb0d1036aaa32f954214a530cbe0d

SHA512
2eaaa984039a01ed3049cdb0197515a5d66e3b3f8c7880bf17d734498bf2d174843f4221a0e690603acec0d55419789a4bb2403cb505a0595240bff29e4de1d2

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
6b0a27c12319efdd9dc731a6b9efe45b

SHA1
6fb14b56419f7a801170e2ad5707fa7923ebb796

SHA256
a7f9064185826d941d3e726854483d0c88dc124eb8cbf4b7793d40d9020e610a

SHA512
f52dc0a8b65963d0426dcc86623a6a671c471f178d6032a78f2b2b1a9bc0efbef3984c524b5ca78fd06b8f6adc6f059540dc1ee16d8af47124f20c285f2268f1

Download Submit
memory/2084-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2084-10-0x0000000000290000-0x00000000002AF000-memory.dmp

Filesize
124KB

Download
memory/2084-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2548-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2712-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2728-21-0x00000000003E0000-0x00000000003FF000-memory.dmp

Filesize
124KB

Download
memory/2864-34-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2864-39-0x0000000000420000-0x000000000043F000-memory.dmp

Filesize
124KB

Download