b97a8f7f8d94ab544501f35597711b50cf3274a76f75fc27f9fe92edc07a510c

Analysis

max time kernel
120s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 22:06

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General

Target

0a3166cfc6d771412517fd2ae96f29f0N.exe
Size

4.7MB
MD5

0a3166cfc6d771412517fd2ae96f29f0
SHA1

63b37bb26ac2272966c1c9b82debf93ea8be0574
SHA256

b97a8f7f8d94ab544501f35597711b50cf3274a76f75fc27f9fe92edc07a510c
SHA512

1994634bef6761e7885433a9a1bb4191eb678404d8068a7129f8b64bf8426ecb65700ea08003bd53c029b8612bc0f9ee89b55a87b929b6afb01a9225260966c1
SSDEEP

49152:tYtAAX6FcShtPyqSLhSFULhMYYKqFWsMhUY71l8bX:q8yqEUFYhMYYKqFWsMhf16

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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
4488	0a3166cfc6d771412517fd2ae96f29f0n.exe
1364	icsys.icn.exe
4380	explorer.exe
1356	spoolsv.exe
388	svchost.exe
4528	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\\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	0a3166cfc6d771412517fd2ae96f29f0N.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4688	4488	WerFault.exe	85

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	0a3166cfc6d771412517fd2ae96f29f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0a3166cfc6d771412517fd2ae96f29f0n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icsys.icn.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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\CID\{A3358E75-826A3-31A5-2C1E-14A484D53571}\242DD93D	0a3166cfc6d771412517fd2ae96f29f0n.exe
Key created	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\CID	0a3166cfc6d771412517fd2ae96f29f0n.exe
Key created	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\CID\{A3358E75-826A3-31A5-2C1E-14A484D53571}	0a3166cfc6d771412517fd2ae96f29f0n.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\CID\{A3358E75-826A3-31A5-2C1E-14A484D53571}\242DD93D\2 = "118105046078008009198080245028157129229105021171"	0a3166cfc6d771412517fd2ae96f29f0n.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
1364	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4380	explorer.exe
388	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4488	0a3166cfc6d771412517fd2ae96f29f0n.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
412	0a3166cfc6d771412517fd2ae96f29f0N.exe
1364	icsys.icn.exe
1364	icsys.icn.exe
4380	explorer.exe
4380	explorer.exe
1356	spoolsv.exe
1356	spoolsv.exe
388	svchost.exe
388	svchost.exe
4528	spoolsv.exe
4528	spoolsv.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 4488	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	85
PID 412 wrote to memory of 4488	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	85
PID 412 wrote to memory of 4488	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	85
PID 412 wrote to memory of 1364	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	88
PID 412 wrote to memory of 1364	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	88
PID 412 wrote to memory of 1364	412	0a3166cfc6d771412517fd2ae96f29f0N.exe	88
PID 1364 wrote to memory of 4380	1364	icsys.icn.exe	89
PID 1364 wrote to memory of 4380	1364	icsys.icn.exe	89
PID 1364 wrote to memory of 4380	1364	icsys.icn.exe	89
PID 4380 wrote to memory of 1356	4380	explorer.exe	90
PID 4380 wrote to memory of 1356	4380	explorer.exe	90
PID 4380 wrote to memory of 1356	4380	explorer.exe	90
PID 1356 wrote to memory of 388	1356	spoolsv.exe	91
PID 1356 wrote to memory of 388	1356	spoolsv.exe	91
PID 1356 wrote to memory of 388	1356	spoolsv.exe	91
PID 388 wrote to memory of 4528	388	svchost.exe	92
PID 388 wrote to memory of 4528	388	svchost.exe	92
PID 388 wrote to memory of 4528	388	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\0a3166cfc6d771412517fd2ae96f29f0N.exe
"C:\Users\Admin\AppData\Local\Temp\0a3166cfc6d771412517fd2ae96f29f0N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:412
- \??\c:\users\admin\appdata\local\temp\0a3166cfc6d771412517fd2ae96f29f0n.exe
  c:\users\admin\appdata\local\temp\0a3166cfc6d771412517fd2ae96f29f0n.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:4488
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 1776
    3⤵
    - Program crash
    PID:4688
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1364
- - \??\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
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4380
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1356
    - - \??\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
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:388
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4488 -ip 4488
1⤵
PID:3392

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

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:\Users\Admin\AppData\Local\Temp\0a3166cfc6d771412517fd2ae96f29f0n.exe

Filesize
4.6MB

MD5
e4d6bc579bb1784abe102df50b454415

SHA1
fdebff4c0fd98b33c44e0b2c8cd372fedbd8ede1

SHA256
f7edb4846e02a8ae90e6020ab69431825d27d9924835a70066f8449635baab50

SHA512
d8a2775a17eb8b4bfa4f92bba2f5a7b187a8b7d8b1dab53bded056c4d071a2d5e47a45acb4c3c12b5bcdde34876f95b0ae04e3db554093d79f7ab740fe7907ce

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

Filesize
135KB

MD5
d85133534ced162c057bb894f4b19de5

SHA1
6b7622e5013d9f402276c345d1e489c7ed821b00

SHA256
c69b2fcd96115515effb568d74934f896939cecdc100ab70615dbe8838d15cdb

SHA512
91408324d1a5afa6e701e6587218c28ecb980c27d882103bb6e4fa63f0fa327e24c7f2b6714bb150bf5c994f616b8d972c7645270462af449996089e97b75ebf

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

Filesize
135KB

MD5
b7b44d1c1561f42030e32f2c38664a0f

SHA1
38592dcd976e46d26dae56419f239bd5fbf487b5

SHA256
ebe48be77ba73d1f901dd793f4607dfbcad3e4618b83610edc512eabc2ea4761

SHA512
f85ad941df34f17a6fc4de49aaa3598b70cf78236783a495aa58bba15337cc6d5ff557ede82619bce4eb3fd6de728773ba36a0e4742de3b70f6226206d5e19fb

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

Filesize
135KB

MD5
ffb3538e8d5b2660646001bec6873457

SHA1
bfbebcc0953f1b91599f84e78f5aed0a0c0239b0

SHA256
d6c81c29a7ce96575441a891c170a75ea6dfd4bd8399cd8f0c3033961dad51aa

SHA512
38e6b533410e00c78e1fb04ddf86a898c8fa52f534b0ba1d02cb08e3ae215aa837ad36326cb25b2c8595b4774a60ef157e8a410b1b000a10602d8bbe7625390d

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

Filesize
135KB

MD5
b83d50823eaa3421f41e32e92246f67b

SHA1
764c1730d3b9e4718bad2d124905ab54be577f28

SHA256
fab256d3d9406a521d0c2d503fb9254cda3c3d205063d1c259f9649eee25dc83

SHA512
99dbab013659d71bc508c101c9f6f988a5ff7ca5fc526834e79a9bfd4ada72c8aab11afc20d263379c7fc9d994861f6bd611b54c035e2328ecbb1e2c144dfe3f

Download Submit
memory/412-57-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/412-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1356-55-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1364-20-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1364-56-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4488-12-0x0000000005B60000-0x0000000006104000-memory.dmp

Filesize
5.6MB

Download
memory/4488-15-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4488-14-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/4488-13-0x00000000055B0000-0x0000000005642000-memory.dmp

Filesize
584KB

Download
memory/4488-46-0x0000000006D00000-0x0000000006D66000-memory.dmp

Filesize
408KB

Download
memory/4488-11-0x0000000005510000-0x00000000055AC000-memory.dmp

Filesize
624KB

Download
memory/4488-10-0x0000000000630000-0x0000000000AC8000-memory.dmp

Filesize
4.6MB

Download
memory/4488-9-0x00000000746DE000-0x00000000746DF000-memory.dmp

Filesize
4KB

Download
memory/4488-58-0x0000000006940000-0x0000000006996000-memory.dmp

Filesize
344KB

Download
memory/4488-59-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4528-52-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4528-54-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download