1ea665d2a1997a41210c305830e938fd73989f444310248ff9b9ac5d36012043

Analysis

max time kernel
120s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
628	164cac39cc9a43af184984e8b25600b0n.exe
1548	icsys.icn.exe
3784	explorer.exe
1636	spoolsv.exe
5028	svchost.exe
1124	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\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
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

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\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
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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
1548	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3784	explorer.exe
5028	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2972	164cac39cc9a43af184984e8b25600b0N.exe
2972	164cac39cc9a43af184984e8b25600b0N.exe
1548	icsys.icn.exe
1548	icsys.icn.exe
3784	explorer.exe
3784	explorer.exe
1636	spoolsv.exe
1636	spoolsv.exe
5028	svchost.exe
5028	svchost.exe
1124	spoolsv.exe
1124	spoolsv.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 628	2972	164cac39cc9a43af184984e8b25600b0N.exe	85
PID 2972 wrote to memory of 628	2972	164cac39cc9a43af184984e8b25600b0N.exe	85
PID 2972 wrote to memory of 628	2972	164cac39cc9a43af184984e8b25600b0N.exe	85
PID 2972 wrote to memory of 1548	2972	164cac39cc9a43af184984e8b25600b0N.exe	87
PID 2972 wrote to memory of 1548	2972	164cac39cc9a43af184984e8b25600b0N.exe	87
PID 2972 wrote to memory of 1548	2972	164cac39cc9a43af184984e8b25600b0N.exe	87
PID 1548 wrote to memory of 3784	1548	icsys.icn.exe	89
PID 1548 wrote to memory of 3784	1548	icsys.icn.exe	89
PID 1548 wrote to memory of 3784	1548	icsys.icn.exe	89
PID 3784 wrote to memory of 1636	3784	explorer.exe	90
PID 3784 wrote to memory of 1636	3784	explorer.exe	90
PID 3784 wrote to memory of 1636	3784	explorer.exe	90
PID 1636 wrote to memory of 5028	1636	spoolsv.exe	91
PID 1636 wrote to memory of 5028	1636	spoolsv.exe	91
PID 1636 wrote to memory of 5028	1636	spoolsv.exe	91
PID 5028 wrote to memory of 1124	5028	svchost.exe	92
PID 5028 wrote to memory of 1124	5028	svchost.exe	92
PID 5028 wrote to memory of 1124	5028	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\164cac39cc9a43af184984e8b25600b0N.exe
"C:\Users\Admin\AppData\Local\Temp\164cac39cc9a43af184984e8b25600b0N.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2972
- \??\c:\users\admin\appdata\local\temp\164cac39cc9a43af184984e8b25600b0n.exe
  c:\users\admin\appdata\local\temp\164cac39cc9a43af184984e8b25600b0n.exe
  2⤵
  - Executes dropped EXE
  PID:628
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1548
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3784
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1636
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Adds Run key to start application
        Drops file in System32 directory
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:5028
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:1124

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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
C:\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
dba4becbb5912b2735f5a82ffbe5d409

SHA1
f0c9e38175bdbc84be46d105bcbb1e9022707d1c

SHA256
1706b28db087d0a0400a02e34e80a11ed77c87bbba94e58ca5ba8d4f9404abae

SHA512
fba72545737f7d65a21fc068546954e36f06d87dc11e54c6efdd3e465baf38e143df6b48129589d7053018013aa446a0b404cb9c24a9fed9330eb122112bf981

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

Filesize
135KB

MD5
2c2fc16feecdb0e31598a314ba614b25

SHA1
cfa621dce7917db897f426e38b57efbeca60d0ea

SHA256
cb65bf37b474da7eb505a071d1d244da061796f2533345c64b7d615cf0168f25

SHA512
6c9e82a4064d2634dede62b2a7a3661c5a9a1fe080185db411ee0e1774b3fc490e3ac9b9153051bb0289a50908445605803a0113993e492761ec24bc7f46acfe

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

Filesize
135KB

MD5
2b1423eacd235afadd75a0d6de46e5da

SHA1
9a76e7a5b9d3136d62ed828a2fc4836d708acd1c

SHA256
dd7747e719af69b38738e61d2d0c9820c324663c2deabbfe23faa5daf88dd5cc

SHA512
b5ce24ac3ef3c77e79964cf4b0aa4a558b879b7704f8c93daffbad3193be8835a6d867687b564e9777a969ba6e9cabd37bfc28a7f2fd8d4aad7475130830d8c9

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

Filesize
135KB

MD5
7abf315dca2b922e1a5381c85008f6da

SHA1
f6bb7a4d79aa4abfed7419a138d0e4a89457899a

SHA256
e448d46ab4be30638ffde4e45e161b35231ae38425aba0f139b736d1595b1886

SHA512
9e2e468c5dee1afb4e50ad79f44eb955a10fadafb1bc97dbd800014a90bd17850df3be258c3e6f59575ee540b76eb91eaa227aa2bbd005675d1bcb42e353a13d

Download Submit
memory/1124-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1548-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1636-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2972-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2972-47-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3784-20-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download