46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49

Analysis

max time kernel
120s
max time network
21s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
10/10/2024, 12:50

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General

Target

46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
Size

1.7MB
MD5

13b9675d1e67b8cc1c401038647535d0
SHA1

b0d760d490932040490748ed641b245c90a0245a
SHA256

46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49
SHA512

d2752cfe32df336a4602120b5b5b52d006137547a0aad4718ff85ff0c955946b8f88711bf61ee4d1841968927bfaa36e8428523c83f36297b334c518f0753167
SSDEEP

49152:tnsExITYbNbNWo4kSH3OqtwI6V6dRPaRWLT:RsExIT4bNJFY3Oqt1d1eWLT

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

Executes dropped EXE 6 IoCs

pid	Process
2272	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
2968	icsys.icn.exe
2800	explorer.exe
2948	spoolsv.exe
2720	svchost.exe
2752	spoolsv.exe

Loads dropped DLL 7 IoCs

pid	Process
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
2968	icsys.icn.exe
2800	explorer.exe
2948	spoolsv.exe
2720	svchost.exe
1284	Process not Found

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	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.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

System Location Discovery: System Language Discovery 1 TTPs 8 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.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
2280	schtasks.exe
832	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
2272	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2800	explorer.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2800	explorer.exe
2720	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
2968	icsys.icn.exe
2968	icsys.icn.exe
2800	explorer.exe
2800	explorer.exe
2948	spoolsv.exe
2948	spoolsv.exe
2720	svchost.exe
2720	svchost.exe
2752	spoolsv.exe
2752	spoolsv.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 2272	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	30
PID 1520 wrote to memory of 2272	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	30
PID 1520 wrote to memory of 2272	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	30
PID 1520 wrote to memory of 2272	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	30
PID 1520 wrote to memory of 2968	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	31
PID 1520 wrote to memory of 2968	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	31
PID 1520 wrote to memory of 2968	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	31
PID 1520 wrote to memory of 2968	1520	46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe	31
PID 2968 wrote to memory of 2800	2968	icsys.icn.exe	32
PID 2968 wrote to memory of 2800	2968	icsys.icn.exe	32
PID 2968 wrote to memory of 2800	2968	icsys.icn.exe	32
PID 2968 wrote to memory of 2800	2968	icsys.icn.exe	32
PID 2800 wrote to memory of 2948	2800	explorer.exe	33
PID 2800 wrote to memory of 2948	2800	explorer.exe	33
PID 2800 wrote to memory of 2948	2800	explorer.exe	33
PID 2800 wrote to memory of 2948	2800	explorer.exe	33
PID 2948 wrote to memory of 2720	2948	spoolsv.exe	34
PID 2948 wrote to memory of 2720	2948	spoolsv.exe	34
PID 2948 wrote to memory of 2720	2948	spoolsv.exe	34
PID 2948 wrote to memory of 2720	2948	spoolsv.exe	34
PID 2720 wrote to memory of 2752	2720	svchost.exe	35
PID 2720 wrote to memory of 2752	2720	svchost.exe	35
PID 2720 wrote to memory of 2752	2720	svchost.exe	35
PID 2720 wrote to memory of 2752	2720	svchost.exe	35
PID 2800 wrote to memory of 2476	2800	explorer.exe	36
PID 2800 wrote to memory of 2476	2800	explorer.exe	36
PID 2800 wrote to memory of 2476	2800	explorer.exe	36
PID 2800 wrote to memory of 2476	2800	explorer.exe	36
PID 2720 wrote to memory of 2280	2720	svchost.exe	37
PID 2720 wrote to memory of 2280	2720	svchost.exe	37
PID 2720 wrote to memory of 2280	2720	svchost.exe	37
PID 2720 wrote to memory of 2280	2720	svchost.exe	37
PID 2720 wrote to memory of 832	2720	svchost.exe	40
PID 2720 wrote to memory of 832	2720	svchost.exe	40
PID 2720 wrote to memory of 832	2720	svchost.exe	40
PID 2720 wrote to memory of 832	2720	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.exe
"C:\Users\Admin\AppData\Local\Temp\46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49N.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:1520
- \??\c:\users\admin\appdata\local\temp\46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
  c:\users\admin\appdata\local\temp\46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe
  2⤵
  - Executes dropped EXE
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2272
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2968
- - \??\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
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      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:2948
    - - \??\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
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2720
      - \??\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:2752
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:52 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2280
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:53 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:832
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:2476

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

Query Registry

T1012

System Information Discovery

T1082

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\Themes\explorer.exe

Filesize
135KB

MD5
166d4f14ffdfc3c1b21aee892f91e1b7

SHA1
ae2c34c06dd44c4f0505cdff6037459e905c5c2a

SHA256
66b549e10cc7c7fb6844cb8cf5603f711d44aed038f80c21a9ead8b3831e05cd

SHA512
0d1a2d361a237f54b127024d740b271cb9e48a7a8bc36a48735901627ba542e323f53c7afd170ef1a877f4adeaae6c3c6fd8ce43dd370fa98b3b835a5acb806b

Download Submit
\Users\Admin\AppData\Local\Temp\46154c0c670ecd7b9a9966fef17352e80366371a5c7240617b0c416ef18b4c49n.exe

Filesize
1.6MB

MD5
ed87e86892e7f39fb9911a5e8451bc12

SHA1
f2d3f0dbca4c0777de5819f0d96036cd90293020

SHA256
643eaebfd8a057e6e9cc88863d7e9430b932b06470ea7ba809e337c99c4c4890

SHA512
8fcd881b7d0b24bbf91a7ecc1de1bd3fd7020f4d933b79c0d423e6f0365660fb3a141a0de32db57fe322f36fdb64a2add29d578db396ddd708bdb6e094904fcf

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

Filesize
135KB

MD5
9ef8c8cef3be80b1fb5adc183dec4c43

SHA1
c34b76e1304a94c2dd591763718c7cf6ca8ede89

SHA256
d1a1ad3ee951b40257f1fc70c22d6c94efb20942e57f29dd4ab33fd8120de560

SHA512
3b8532f71be6e874cefde755b9d9c6a30baed56a8b58472704cff5205f8f5bd2f73c34eefa51ab678b8e52881baeb6c7b3982fdab4de4edd6849b67dfd9920b8

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
d4c47653a27adfa9251866eceff65ac4

SHA1
47a5bf1ffe5387f39ee8cc698afbd736570fba06

SHA256
1ef8cc15c01fcd76eee56821fc55865615721f0e09a133e140bfe2f929d443ab

SHA512
47770bb7fa63ea72e283b9b6c45f021d0a30abb120f353e59317f5742af121519aaed2da9e2aedbbb6d5adb106c460794018973bf9c14d4f517eee8eed0c77b5

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
bda8c78a49f1d585b285cfaa5d45a9b2

SHA1
d418b25aa8c74d5a79df6b4644185a7d3b4606b5

SHA256
4fcc69b6dca758f0fb301c921f152f712fc51d4c9ba7dfff010ea89d383057d7

SHA512
01ea583bd7127c31b8ac8d9c1e4446d3645a6d939865e0a28025cfdd779afb02f320b04ad6c0c0133b15f7925e349feb7861addee46ab5573cb2c8b6171c01a4

Download Submit
memory/1520-65-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1520-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1520-18-0x00000000004A0000-0x00000000004BF000-memory.dmp

Filesize
124KB

Download
memory/2272-13-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2272-64-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2272-12-0x000000001CAD0000-0x000000001CCE4000-memory.dmp

Filesize
2.1MB

Download
memory/2272-11-0x00000000008D0000-0x0000000000A66000-memory.dmp

Filesize
1.6MB

Download
memory/2272-56-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/2272-10-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/2720-70-0x00000000004A0000-0x00000000004BF000-memory.dmp

Filesize
124KB

Download
memory/2720-58-0x00000000004A0000-0x00000000004BF000-memory.dmp

Filesize
124KB

Download
memory/2720-69-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2752-62-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2800-68-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2948-63-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2948-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

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memory/2968-66-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

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memory/2968-27-0x00000000002F0000-0x000000000030F000-memory.dmp

Filesize
124KB

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