7a0a5d13d56af8698e952fc82cf0e90695ad28cc99f4c5ea2d7374db15a20211

Analysis

max time kernel
150s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2024 13:11

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General

Target

CraxsRat V7.4/CraxsRat V7.4/CraxsRat V7.4.exe
Size

62.2MB
MD5

64c02477cd6d67ced767aa342b8f61c0
SHA1

6b488e3b0185e30721cfc49e33a2a98864464f8e
SHA256

0530181f39d786218085f317b23fc38c271c6b99bf063662c46948214a988eaa
SHA512

120da180771db3b685fa96cc648b74fbb51da37f004d754fd5470a6b1e46a67151fcdfc1e520d1057398f5315e4ceca8c75dfb6ea3e36cb55d3c775e18603346
SSDEEP

786432:cc+NX10EPRuHoA5AKF7zR/t6tKF+iS6JkKgApbLKo2R:D+NX10qwAMzttZm6CKXxIR

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

Processes:

explorer.exesvchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

Processes:

craxsrat v7.4.exe icsys.icn.exeexplorer.exespoolsv.exesvchost.exespoolsv.exe

pid	Process
1804	craxsrat v7.4.exe
320	icsys.icn.exe
620	explorer.exe
940	spoolsv.exe
3060	svchost.exe
2868	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exeexplorer.exe

description	ioc	Process
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
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

Drops file in System32 directory 2 IoCs

Processes:

explorer.exesvchost.exe

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

Processes:

spoolsv.exeexplorer.exeCraxsRat V7.4.exeicsys.icn.exe

description	ioc	Process
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	CraxsRat V7.4.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

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

Processes:

icsys.icn.exeexplorer.exespoolsv.exesvchost.exespoolsv.exeCraxsRat V7.4.exe

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CraxsRat V7.4.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

CraxsRat V7.4.exeicsys.icn.exe

pid	Process
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe
320	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

explorer.exesvchost.exe

pid	Process
620	explorer.exe
3060	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

craxsrat v7.4.exe

pid	Process
1804	craxsrat v7.4.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

craxsrat v7.4.exe

pid	Process
1804	craxsrat v7.4.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

CraxsRat V7.4.exeicsys.icn.exeexplorer.exespoolsv.exesvchost.exespoolsv.exe

pid	Process
2660	CraxsRat V7.4.exe
2660	CraxsRat V7.4.exe
320	icsys.icn.exe
320	icsys.icn.exe
620	explorer.exe
620	explorer.exe
940	spoolsv.exe
940	spoolsv.exe
3060	svchost.exe
3060	svchost.exe
2868	spoolsv.exe
2868	spoolsv.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

CraxsRat V7.4.exeicsys.icn.exeexplorer.exespoolsv.exesvchost.exe

description	pid	Process	procid_target
PID 2660 wrote to memory of 1804	2660	CraxsRat V7.4.exe	87
PID 2660 wrote to memory of 1804	2660	CraxsRat V7.4.exe	87
PID 2660 wrote to memory of 320	2660	CraxsRat V7.4.exe	94
PID 2660 wrote to memory of 320	2660	CraxsRat V7.4.exe	94
PID 2660 wrote to memory of 320	2660	CraxsRat V7.4.exe	94
PID 320 wrote to memory of 620	320	icsys.icn.exe	95
PID 320 wrote to memory of 620	320	icsys.icn.exe	95
PID 320 wrote to memory of 620	320	icsys.icn.exe	95
PID 620 wrote to memory of 940	620	explorer.exe	96
PID 620 wrote to memory of 940	620	explorer.exe	96
PID 620 wrote to memory of 940	620	explorer.exe	96
PID 940 wrote to memory of 3060	940	spoolsv.exe	97
PID 940 wrote to memory of 3060	940	spoolsv.exe	97
PID 940 wrote to memory of 3060	940	spoolsv.exe	97
PID 3060 wrote to memory of 2868	3060	svchost.exe	98
PID 3060 wrote to memory of 2868	3060	svchost.exe	98
PID 3060 wrote to memory of 2868	3060	svchost.exe	98

C:\Users\Admin\AppData\Local\Temp\CraxsRat V7.4\CraxsRat V7.4\CraxsRat V7.4.exe
"C:\Users\Admin\AppData\Local\Temp\CraxsRat V7.4\CraxsRat V7.4\CraxsRat V7.4.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:2660
- \??\c:\users\admin\appdata\local\temp\craxsrat v7.4\craxsrat v7.4\craxsrat v7.4.exe
  "c:\users\admin\appdata\local\temp\craxsrat v7.4\craxsrat v7.4\craxsrat v7.4.exe "
  2⤵
  - Executes dropped EXE
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1804
- 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:320
- - \??\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:620
  - - \??\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:940
    - - \??\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:3060
      - \??\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:2868

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
a6c50b967b24ac189b14067a4ef27daf

SHA1
3f7733b27832f1ef70992fb93469a76638c123ea

SHA256
975099d8efea84173e6cbd4693feea5fdba522949baf60b03d58b05a40061d01

SHA512
2830a14befc6bd32bab8c93b4dd423666449eb06f40e2ef4ee0af6da8d9b525930ecbf412c8293615ba5b1055088a880100e03c3a0878b3757d8c3c022beca5d

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

Filesize
135KB

MD5
8af16e9175bb5820581bd95e3bf730aa

SHA1
2a0763e42e32d172dff2bf79b7dfeaf911f69fad

SHA256
1281996ce238f20d10d44d0dbf840c9c77249f6b81607629b98afa1dc96dc0b4

SHA512
a6dbf94688da4fe1833c6d6cd5100b50b673dbb6e09abe8bead5572916e3dbb8f72fc68b656ac7e029e7b66bc8f6e3a20e509cbd7328c094492260e2bd204937

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

Filesize
135KB

MD5
92b630b323a21253264d9b0d8b067d08

SHA1
560e6e43c7956dbe1a24d7a9273c374ba35248e2

SHA256
5c57c434feb036ea6a2c79995efa8bb8b6021f54c9929e9a6dca65f8cb4452f5

SHA512
8b646fa450cc511cdf542068832a01234eae897f7c9efe5488cca94cb94165f2cc82802d78fa30854935bde2b094443695ca615909755e5d3310c3e02fa7d386

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

Filesize
135KB

MD5
11eecd1be349d412de7f35a68c16a192

SHA1
bddc43e254db10d548f8b50564352acd244bd72d

SHA256
be39e7748d7b1647f68a7a5c3381c09c46ce4360c56e492254fea5d4734b979c

SHA512
9a400880d2797bfd87deeb233a8596f3a307877bad16a34427d93f449a0f5fee034bcac4bc18d5a7817ec9465a1d555061b59ea1b7e0bdf4a9bb1a865b479183

Download Submit
memory/320-19-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/320-61-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/620-72-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/940-60-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/940-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1804-15-0x000001DD9EA50000-0x000001DD9EA8C000-memory.dmp

Filesize
240KB

Download
memory/1804-52-0x00007FFBE79E0000-0x00007FFBE84A1000-memory.dmp

Filesize
10.8MB

Download
memory/1804-9-0x00007FFBE79E3000-0x00007FFBE79E5000-memory.dmp

Filesize
8KB

Download
memory/1804-27-0x00007FFBE79E0000-0x00007FFBE84A1000-memory.dmp

Filesize
10.8MB

Download
memory/1804-33-0x000001DD9F9F0000-0x000001DD9FB96000-memory.dmp

Filesize
1.6MB

Download
memory/1804-14-0x000001DD9E9E0000-0x000001DD9EA0C000-memory.dmp

Filesize
176KB

Download
memory/1804-13-0x000001DD85F90000-0x000001DD85FAC000-memory.dmp

Filesize
112KB

Download
memory/1804-11-0x00007FFBE79E0000-0x00007FFBE84A1000-memory.dmp

Filesize
10.8MB

Download
memory/1804-64-0x000001DD9EAB0000-0x000001DD9EB4A000-memory.dmp

Filesize
616KB

Download
memory/1804-26-0x00007FFBE79E0000-0x00007FFBE84A1000-memory.dmp

Filesize
10.8MB

Download
memory/1804-39-0x00007FFBE79E3000-0x00007FFBE79E5000-memory.dmp

Filesize
8KB

Download
memory/1804-63-0x00007FFBE79E0000-0x00007FFBE84A1000-memory.dmp

Filesize
10.8MB

Download
memory/1804-10-0x000001DD80560000-0x000001DD8436E000-memory.dmp

Filesize
62.1MB

Download
memory/1804-12-0x000001DD85F60000-0x000001DD85F6C000-memory.dmp

Filesize
48KB

Download
memory/2660-62-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2660-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2868-59-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2868-58-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3060-53-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3060-73-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download