1ea665d2a1997a41210c305830e938fd73989f444310248ff9b9ac5d36012043

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
20/07/2024, 22:18

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General

Target

164cac39cc9a43af184984e8b25600b0N.exe
Size

7.0MB
MD5

164cac39cc9a43af184984e8b25600b0
SHA1

7e15a37fde68b784173099aaa2203caf6751e872
SHA256

1ea665d2a1997a41210c305830e938fd73989f444310248ff9b9ac5d36012043
SHA512

c970f9467fc20e2bba7ccfebf69f055aaa6b374bc6454cf206289ef678bbe418ca9f3fed96e9007381eae93f058c07cb949b696e0c1506ab14fe62405fb52836
SSDEEP

49152:twlipMZE8Q+fzT/QwadfqUAnggWrh3Co6BjkpqpkmyUD7LNq0I698hczq4wvILkC:IipMZE8Q+f44fpOkfylw9LJ9sY3p

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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
2140	164cac39cc9a43af184984e8b25600b0n.exe
2648	icsys.icn.exe
2664	explorer.exe
2712	spoolsv.exe
2560	svchost.exe
2540	spoolsv.exe

Loads dropped DLL 7 IoCs

pid	Process
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2648	icsys.icn.exe
2664	explorer.exe
2712	spoolsv.exe
2560	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 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	164cac39cc9a43af184984e8b25600b0N.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.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

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
2516	schtasks.exe
1232	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2664	explorer.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2664	explorer.exe
2560	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2080	164cac39cc9a43af184984e8b25600b0N.exe
2080	164cac39cc9a43af184984e8b25600b0N.exe
2648	icsys.icn.exe
2648	icsys.icn.exe
2664	explorer.exe
2664	explorer.exe
2712	spoolsv.exe
2712	spoolsv.exe
2560	svchost.exe
2560	svchost.exe
2540	spoolsv.exe
2540	spoolsv.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2140	2080	164cac39cc9a43af184984e8b25600b0N.exe	30
PID 2080 wrote to memory of 2140	2080	164cac39cc9a43af184984e8b25600b0N.exe	30
PID 2080 wrote to memory of 2140	2080	164cac39cc9a43af184984e8b25600b0N.exe	30
PID 2080 wrote to memory of 2140	2080	164cac39cc9a43af184984e8b25600b0N.exe	30
PID 2080 wrote to memory of 2648	2080	164cac39cc9a43af184984e8b25600b0N.exe	31
PID 2080 wrote to memory of 2648	2080	164cac39cc9a43af184984e8b25600b0N.exe	31
PID 2080 wrote to memory of 2648	2080	164cac39cc9a43af184984e8b25600b0N.exe	31
PID 2080 wrote to memory of 2648	2080	164cac39cc9a43af184984e8b25600b0N.exe	31
PID 2648 wrote to memory of 2664	2648	icsys.icn.exe	33
PID 2648 wrote to memory of 2664	2648	icsys.icn.exe	33
PID 2648 wrote to memory of 2664	2648	icsys.icn.exe	33
PID 2648 wrote to memory of 2664	2648	icsys.icn.exe	33
PID 2664 wrote to memory of 2712	2664	explorer.exe	34
PID 2664 wrote to memory of 2712	2664	explorer.exe	34
PID 2664 wrote to memory of 2712	2664	explorer.exe	34
PID 2664 wrote to memory of 2712	2664	explorer.exe	34
PID 2712 wrote to memory of 2560	2712	spoolsv.exe	35
PID 2712 wrote to memory of 2560	2712	spoolsv.exe	35
PID 2712 wrote to memory of 2560	2712	spoolsv.exe	35
PID 2712 wrote to memory of 2560	2712	spoolsv.exe	35
PID 2560 wrote to memory of 2540	2560	svchost.exe	36
PID 2560 wrote to memory of 2540	2560	svchost.exe	36
PID 2560 wrote to memory of 2540	2560	svchost.exe	36
PID 2560 wrote to memory of 2540	2560	svchost.exe	36
PID 2664 wrote to memory of 3004	2664	explorer.exe	37
PID 2664 wrote to memory of 3004	2664	explorer.exe	37
PID 2664 wrote to memory of 3004	2664	explorer.exe	37
PID 2664 wrote to memory of 3004	2664	explorer.exe	37
PID 2560 wrote to memory of 2516	2560	svchost.exe	38
PID 2560 wrote to memory of 2516	2560	svchost.exe	38
PID 2560 wrote to memory of 2516	2560	svchost.exe	38
PID 2560 wrote to memory of 2516	2560	svchost.exe	38
PID 2560 wrote to memory of 1232	2560	svchost.exe	41
PID 2560 wrote to memory of 1232	2560	svchost.exe	41
PID 2560 wrote to memory of 1232	2560	svchost.exe	41
PID 2560 wrote to memory of 1232	2560	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\164cac39cc9a43af184984e8b25600b0N.exe
"C:\Users\Admin\AppData\Local\Temp\164cac39cc9a43af184984e8b25600b0N.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2080
- \??\c:\users\admin\appdata\local\temp\164cac39cc9a43af184984e8b25600b0n.exe
  c:\users\admin\appdata\local\temp\164cac39cc9a43af184984e8b25600b0n.exe
  2⤵
  - Executes dropped EXE
  PID:2140
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2648
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - 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:2664
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Windows directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2712
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        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:2560
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2540
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:20 /f
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:2516
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:21 /f
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1232
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:3004

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\164cac39cc9a43af184984e8b25600b0n.exe

Filesize
6.9MB

MD5
b30dc44ed05c285d270654cf0ed80569

SHA1
7ee0c8496c8e9ac0a22c82370a25127dd62a51cd

SHA256
deff17ed68a3a4b102b3c3f640968eb29e55c39c0f1fe672dee7cc744c109a8f

SHA512
10ff37371216fb3f34da1dbbefe2ec3434010331847961a2965203bf30535bff711dca0b8114f529c0a53180e2767a8b517214479e0a2afcb8e1f382d4c321a8

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

Filesize
135KB

MD5
6d5cb208dd2833f2d5c2138902224278

SHA1
6c7489acbaa66b8a8da92deae7e1349215da3deb

SHA256
abaef8d94df537cda152c12dc29b8faa3b1f7feed62e2da23bf983da309f22ef

SHA512
c84b7c8a9ede7a05f4ae082c4297d4a4b0cb153953ad1d0d0637ff95e9f6a9dfa1a164b9c279a6b1b256551cf98557bf60012e3ebfa199d1483ee389e49b3cad

Download Submit
\Windows\Resources\Themes\icsys.icn.exe

Filesize
135KB

MD5
2c2fc16feecdb0e31598a314ba614b25

SHA1
cfa621dce7917db897f426e38b57efbeca60d0ea

SHA256
cb65bf37b474da7eb505a071d1d244da061796f2533345c64b7d615cf0168f25

SHA512
6c9e82a4064d2634dede62b2a7a3661c5a9a1fe080185db411ee0e1774b3fc490e3ac9b9153051bb0289a50908445605803a0113993e492761ec24bc7f46acfe

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
6dd9863910d3fb0a27c575b916136102

SHA1
c158c15637c26d02ebb8e91377fb4d29db358f5b

SHA256
629dbaadc71660ba1754b78f11e435449317d3f020802ea493f0f2e0b13f2423

SHA512
5af99137281444b0205d643a5379388017d6dfb9b08578a1f5db2495c272bc43a0edd2d802717790f0ced887466ccadcc4eb66021c64a15e38183bd9cdc5dbf4

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
98749f7c37264a7484f66094c1ee8f40

SHA1
7fc30998ed8d905411d67cd79aeadd972239a881

SHA256
44d66cec3aeb84f8fa103c197efa88dbd446ef909a5ac0808ca5eca2e51910b9

SHA512
3de801c5657103303130a99402d23ae6a8db0430a94360e96619a37aee040ae4e1442e0768f88af78effa51d0e3e450e47958fccba942137fedcaa6a59c00896

Download Submit
memory/2080-29-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2080-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2080-17-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2540-62-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2560-55-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2560-57-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2648-28-0x00000000002A0000-0x00000000002BF000-memory.dmp

Filesize
124KB

Download
memory/2648-64-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2712-53-0x00000000003B0000-0x00000000003CF000-memory.dmp

Filesize
124KB

Download
memory/2712-63-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download