Analysis
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max time kernel
141s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
13/03/2024, 06:26
Static task
static1
Behavioral task
behavioral1
Sample
c5326b8ccd0481b6fc7ea4d0261b15d5.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
c5326b8ccd0481b6fc7ea4d0261b15d5.exe
Resource
win10v2004-20240226-en
General
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Target
c5326b8ccd0481b6fc7ea4d0261b15d5.exe
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Size
10.5MB
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MD5
c5326b8ccd0481b6fc7ea4d0261b15d5
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SHA1
633991440ac46243f20396e1acaac7f8a5fb8b6c
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SHA256
3a0812a11a42c0ad5c6a6fa2b2ae73125561d2de24c2177e3794107de6d34f67
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SHA512
3ba5a1cb9ae7d8db7a1b9706e2429a2e541725f2b5d5ac2774f7416d5e965b0af55577ebdf66e3324090ef786c493effd83a147cb5f5bcd63d430efecc86e252
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SSDEEP
24576:CjY+lg48SlJPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPX:tHSl
Malware Config
Extracted
tofsee
43.231.4.6
lazystax.ru
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rtsnwfhh = "0" svchost.exe -
Creates new service(s) 1 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2692 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\rtsnwfhh\ImagePath = "C:\\Windows\\SysWOW64\\rtsnwfhh\\fczxjujx.exe" svchost.exe -
Deletes itself 1 IoCs
pid Process 2460 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1604 fczxjujx.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1604 set thread context of 2460 1604 fczxjujx.exe 41 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 2612 sc.exe 2508 sc.exe 2660 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1948 wrote to memory of 2668 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 28 PID 1948 wrote to memory of 2668 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 28 PID 1948 wrote to memory of 2668 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 28 PID 1948 wrote to memory of 2668 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 28 PID 1948 wrote to memory of 2148 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 30 PID 1948 wrote to memory of 2148 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 30 PID 1948 wrote to memory of 2148 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 30 PID 1948 wrote to memory of 2148 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 30 PID 1948 wrote to memory of 2612 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 32 PID 1948 wrote to memory of 2612 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 32 PID 1948 wrote to memory of 2612 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 32 PID 1948 wrote to memory of 2612 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 32 PID 1948 wrote to memory of 2508 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 34 PID 1948 wrote to memory of 2508 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 34 PID 1948 wrote to memory of 2508 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 34 PID 1948 wrote to memory of 2508 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 34 PID 1948 wrote to memory of 2660 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 36 PID 1948 wrote to memory of 2660 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 36 PID 1948 wrote to memory of 2660 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 36 PID 1948 wrote to memory of 2660 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 36 PID 1948 wrote to memory of 2692 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 39 PID 1948 wrote to memory of 2692 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 39 PID 1948 wrote to memory of 2692 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 39 PID 1948 wrote to memory of 2692 1948 c5326b8ccd0481b6fc7ea4d0261b15d5.exe 39 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41 PID 1604 wrote to memory of 2460 1604 fczxjujx.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\c5326b8ccd0481b6fc7ea4d0261b15d5.exe"C:\Users\Admin\AppData\Local\Temp\c5326b8ccd0481b6fc7ea4d0261b15d5.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1948 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rtsnwfhh\2⤵PID:2668
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fczxjujx.exe" C:\Windows\SysWOW64\rtsnwfhh\2⤵PID:2148
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create rtsnwfhh binPath= "C:\Windows\SysWOW64\rtsnwfhh\fczxjujx.exe /d\"C:\Users\Admin\AppData\Local\Temp\c5326b8ccd0481b6fc7ea4d0261b15d5.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
PID:2612
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description rtsnwfhh "wifi internet conection"2⤵
- Launches sc.exe
PID:2508
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start rtsnwfhh2⤵
- Launches sc.exe
PID:2660
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
PID:2692
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C:\Windows\SysWOW64\rtsnwfhh\fczxjujx.exeC:\Windows\SysWOW64\rtsnwfhh\fczxjujx.exe /d"C:\Users\Admin\AppData\Local\Temp\c5326b8ccd0481b6fc7ea4d0261b15d5.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1604 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2460
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
4.4MB
MD5b89e9f1dfa7ce11aeff8d1f2faa41f9a
SHA1f9498ea707d7189b08bf685ede05a101bcf7413d
SHA25664671356c869cff08a7be79d7b3e10a9729b2646e344c30d3e529ef5f670dcdb
SHA51268d0c74cba0ba5901b938aa5e57e7713b7679585fcc41359f7e4424714dc5ca8cf6b47eff22bb799e583b012e8586d62ca8da004bd3e28ccdee47521e27e5f86
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Filesize
4.1MB
MD5e2d9c34f2a8c08b6ff142edc6a13e245
SHA1eb6ea090516e019fc8b279b61bbe55b5fbd72970
SHA25625dd10f4e6f793072e7c3032503728a1c467adcc0975bb9f03bcfd39d3fdbcdf
SHA5121757ce9d5cdbfcb1d5aa9eac9428a80536c9e58b7be46462e514d7a5421e13104b7e8aa282e7e3f73032ffc8dab51b160d05a10a1fe6024585094d618f7f3a67