64be767713553d9381add65aa62e302691a86257c087ddbaccdf56f7b905cb31

Analysis

max time kernel
147s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 12:11

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General

Target

temp.exe
Size

2.7MB
MD5

80e3cf78b36403d94dc167fb157241a7
SHA1

990c00b029bb0006968d5ff970257793a94e5429
SHA256

64be767713553d9381add65aa62e302691a86257c087ddbaccdf56f7b905cb31
SHA512

7eaf50cd1a18a77737522d85084f7bca394ac7f2e6afdef96a0fbc47ba33c3d7d543d12ce8cc106203ffeb3c20bee63f099f7ca2817d9ba2ff821ae342c023ad
SSDEEP

49152:smuk6Flic1CcPANlX7c8TuQsRVg+HIbHczjzXThtYJtkE:+XCKfDNlsCE

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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
3040	temp.exe
3052	icsys.icn.exe
4820	explorer.exe
1196	spoolsv.exe
2100	svchost.exe
4016	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	temp.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 6 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	temp.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
2332	temp.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
3052	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4820	explorer.exe
2100	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2332	temp.exe
2332	temp.exe
3052	icsys.icn.exe
3052	icsys.icn.exe
4820	explorer.exe
4820	explorer.exe
1196	spoolsv.exe
1196	spoolsv.exe
2100	svchost.exe
2100	svchost.exe
4016	spoolsv.exe
4016	spoolsv.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 3040	2332	temp.exe	82
PID 2332 wrote to memory of 3040	2332	temp.exe	82
PID 2332 wrote to memory of 3052	2332	temp.exe	84
PID 2332 wrote to memory of 3052	2332	temp.exe	84
PID 2332 wrote to memory of 3052	2332	temp.exe	84
PID 3052 wrote to memory of 4820	3052	icsys.icn.exe	85
PID 3052 wrote to memory of 4820	3052	icsys.icn.exe	85
PID 3052 wrote to memory of 4820	3052	icsys.icn.exe	85
PID 4820 wrote to memory of 1196	4820	explorer.exe	86
PID 4820 wrote to memory of 1196	4820	explorer.exe	86
PID 4820 wrote to memory of 1196	4820	explorer.exe	86
PID 1196 wrote to memory of 2100	1196	spoolsv.exe	87
PID 1196 wrote to memory of 2100	1196	spoolsv.exe	87
PID 1196 wrote to memory of 2100	1196	spoolsv.exe	87
PID 2100 wrote to memory of 4016	2100	svchost.exe	88
PID 2100 wrote to memory of 4016	2100	svchost.exe	88
PID 2100 wrote to memory of 4016	2100	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\temp.exe
"C:\Users\Admin\AppData\Local\Temp\temp.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:2332
- \??\c:\users\admin\appdata\local\temp\temp.exe
  c:\users\admin\appdata\local\temp\temp.exe
  2⤵
  - Executes dropped EXE
  PID:3040
- 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:3052
- - \??\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:4820
  - - \??\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:1196
    - - \??\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:2100
      - \??\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:4016

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:\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
6e3625f2c270acc71f37d028535883a4

SHA1
be3e5870ca4d716e739211765c41327b9be2ae5b

SHA256
f0ec345cdafaf7dbd56a986a22f03fde47cbd71418173f34289f12ac6263f59e

SHA512
fdfc796f1414d3d67da1e14f72d8561d995e4354a5b927ad40c460917d7b31e55b38fc7b6e8083c2204b318c6bef66643a9ba5992beb98b13f0e7e2a6bc1509a

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

Filesize
135KB

MD5
0df007d4164b36b476945aa3ee23b740

SHA1
8b8e30289b3d6878665196fdd4e5f69756323b6d

SHA256
54f4d8ea7768f201590f3532d6dcf1ad2d3bb0e8416a03a473dc94730db8223c

SHA512
c253c92e3ceec8929a7fc488df1f5f43e43aefb01febfa4aec88bd0a589bcc59690c81b5238d3e25226121eb2affab8056ecef99dd4a00de42a4a13e3eb794c9

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

Filesize
135KB

MD5
18e03fcaa381713935c6e96c9c912a40

SHA1
67cd7d2303c9ecaf7a3c3b8818224db38fe4d186

SHA256
f98c6fe0ac661b26aea5add3b15e144b3172b5609c1ebc69335d60bcdaf3447b

SHA512
4717635e2e3eb406bf82693334037eda1e17c6aacaa8b7704d0c255d08a0e639e1e9e84ccfd30f3387e82de4829ba7842ffc4b46aa27ee8dbb582c5694ac17ab

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

Filesize
135KB

MD5
4010770736ac8bfe7369ab467a5eab6f

SHA1
74ae347ef10fec1d2a7474605e8c8b498a3f8106

SHA256
edef7aa4cf774a50f359984233a75a9f2e2cd5a63649203fe18592785a4541d9

SHA512
7610cb6bb703d32712b91e2b92a7683cf81b050821d3fdbe76031ee4f432ec0c4870fd2c51df2d525a69995170e470e8089589614e4f3559964009043256f02d

Download Submit
\??\c:\users\admin\appdata\local\temp\temp.exe

Filesize
2.6MB

MD5
f19e882a33d21b592907a8866d5a5ccc

SHA1
cdf3496e95505e93011d75832d756f679150fd87

SHA256
1b0843d77be37f4e6c54e8e0940bfe44bdd4c084c08f432b3cd4fc716f19f82a

SHA512
569971c96c8540d59a9cd2c472355ca2cca6be8c7cf25be531663e309ba24234b8aac4a1c8da0f631f2a785240618633c012ec87552768ccf6fe0612008cd30a

Download Submit
memory/1196-120-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1196-158-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2100-449-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-160-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3040-43-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-76-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-85-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-64-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-54-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-30-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-16-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3040-15-0x00007FFDD3910000-0x00007FFDD3B05000-memory.dmp

Filesize
2.0MB

Download
memory/3052-163-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4016-150-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4820-448-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download