Analysis
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max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-12-2024 19:06
Static task
static1
Behavioral task
behavioral1
Sample
fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe
Resource
win10v2004-20241007-en
General
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Target
fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe
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Size
271KB
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MD5
104e8d1eeac87bdae748957c3a1c2170
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SHA1
cf12406807753a8caff0dda2b855b216544a94d2
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SHA256
fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918
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SHA512
0768a926ce27add3bc75a356059e71504cc1c824eb86c7c93922c0765b0e7f6d9045c63b47dc61f27a23f79990b4b8e95bbfce7efcb00ee1e2043a11eb2d1375
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SSDEEP
6144:XILqdufR6Da5zmR7BV+UdvrEFp7hKlCUx/:4B6Da5zGBjvrEH7e7/
Malware Config
Signatures
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Floxif family
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe -
Detects Floxif payload 1 IoCs
resource yara_rule behavioral1/files/0x00090000000120f6-2.dat floxif -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x00090000000120f6-2.dat acprotect -
Executes dropped EXE 6 IoCs
pid Process 2756 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918n.exe 2748 icsys.icn.exe 2596 explorer.exe 2624 spoolsv.exe 1008 svchost.exe 964 spoolsv.exe -
Loads dropped DLL 8 IoCs
pid Process 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2748 icsys.icn.exe 2596 explorer.exe 2624 spoolsv.exe 1008 svchost.exe -
Adds Run key to start application 2 TTPs 4 IoCs
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 -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\e: fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.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 -
resource yara_rule behavioral1/memory/2792-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral1/files/0x00090000000120f6-2.dat upx behavioral1/files/0x0007000000016de0-15.dat upx behavioral1/memory/2792-17-0x00000000003C0000-0x00000000003FD000-memory.dmp upx behavioral1/memory/2792-53-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral1/memory/2756-73-0x0000000000400000-0x000000000043D000-memory.dmp upx behavioral1/memory/2792-79-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe -
Drops file in Windows directory 5 IoCs
description ioc Process File opened for modification C:\Windows\Resources\Themes\icsys.icn.exe fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.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 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918n.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 schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icsys.icn.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1640 schtasks.exe 1956 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 2596 explorer.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2596 explorer.exe 1008 svchost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 2748 icsys.icn.exe 2748 icsys.icn.exe 2596 explorer.exe 2596 explorer.exe 2624 spoolsv.exe 2624 spoolsv.exe 1008 svchost.exe 1008 svchost.exe 964 spoolsv.exe 964 spoolsv.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 2792 wrote to memory of 2756 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 30 PID 2792 wrote to memory of 2756 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 30 PID 2792 wrote to memory of 2756 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 30 PID 2792 wrote to memory of 2756 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 30 PID 2792 wrote to memory of 2748 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 31 PID 2792 wrote to memory of 2748 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 31 PID 2792 wrote to memory of 2748 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 31 PID 2792 wrote to memory of 2748 2792 fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe 31 PID 2748 wrote to memory of 2596 2748 icsys.icn.exe 32 PID 2748 wrote to memory of 2596 2748 icsys.icn.exe 32 PID 2748 wrote to memory of 2596 2748 icsys.icn.exe 32 PID 2748 wrote to memory of 2596 2748 icsys.icn.exe 32 PID 2596 wrote to memory of 2624 2596 explorer.exe 33 PID 2596 wrote to memory of 2624 2596 explorer.exe 33 PID 2596 wrote to memory of 2624 2596 explorer.exe 33 PID 2596 wrote to memory of 2624 2596 explorer.exe 33 PID 2624 wrote to memory of 1008 2624 spoolsv.exe 34 PID 2624 wrote to memory of 1008 2624 spoolsv.exe 34 PID 2624 wrote to memory of 1008 2624 spoolsv.exe 34 PID 2624 wrote to memory of 1008 2624 spoolsv.exe 34 PID 1008 wrote to memory of 964 1008 svchost.exe 35 PID 1008 wrote to memory of 964 1008 svchost.exe 35 PID 1008 wrote to memory of 964 1008 svchost.exe 35 PID 1008 wrote to memory of 964 1008 svchost.exe 35 PID 2596 wrote to memory of 2524 2596 explorer.exe 36 PID 2596 wrote to memory of 2524 2596 explorer.exe 36 PID 2596 wrote to memory of 2524 2596 explorer.exe 36 PID 2596 wrote to memory of 2524 2596 explorer.exe 36 PID 1008 wrote to memory of 1640 1008 svchost.exe 37 PID 1008 wrote to memory of 1640 1008 svchost.exe 37 PID 1008 wrote to memory of 1640 1008 svchost.exe 37 PID 1008 wrote to memory of 1640 1008 svchost.exe 37 PID 1008 wrote to memory of 1956 1008 svchost.exe 41 PID 1008 wrote to memory of 1956 1008 svchost.exe 41 PID 1008 wrote to memory of 1956 1008 svchost.exe 41 PID 1008 wrote to memory of 1956 1008 svchost.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe"C:\Users\Admin\AppData\Local\Temp\fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918N.exe"1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2792 -
\??\c:\users\admin\appdata\local\temp\fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918n.exec:\users\admin\appdata\local\temp\fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918n.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2756
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C:\Windows\Resources\Themes\icsys.icn.exeC:\Windows\Resources\Themes\icsys.icn.exe2⤵
- 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:2748 -
\??\c:\windows\resources\themes\explorer.exec:\windows\resources\themes\explorer.exe3⤵
- 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:2596 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe SE4⤵
- 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:2624 -
\??\c:\windows\resources\svchost.exec:\windows\resources\svchost.exe5⤵
- 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:1008 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe PR6⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:964
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:08 /f6⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1640
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:09 /f6⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1956
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe4⤵PID:2524
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
135KB
MD51954f8dfe5c17a8d56fd5befee052c3a
SHA1c3af21ac64d775b9950f2229967d16ed0d6ef957
SHA256bb16f5b8140e4a947d8c51d4687a2e2d55ed8686d55b54e2608d1838d53a598d
SHA51243f5cf826888c535e05f19260ecda823491387024477d7f7087337764e65859cc6554bb92708f61d28746a09c616c0f21187ba8214e7c2b536552b9b21cf0a9a
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
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\Users\Admin\AppData\Local\Temp\fd61dfd3efc792e8eee11592226d3e38f43ed0cbe8607a25f38253f2e9f0b918n.exe
Filesize59KB
MD52a0063bb4d8669ddc603064c36bb290b
SHA149aefdf9e9f9d7c2f2af35c7f46dac6dc349618f
SHA2565e84b6a41d3df263a83f67989f1401bd02cf9e13582d124cd44260e7ef9cac08
SHA5129e1bce5c1c85aa4850ff7cc956147eb1bf231d8142f39152fe1b94f98be97b4f8c4853e9f5523e8b6d1c0aef60e86b02121623ba0b88583905eb69f7b14a8393
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Filesize
135KB
MD5a3810d7cc63dedd1cb10ebeba6618f2e
SHA10b635e523731448d37ed281e9a009e16795d6ee7
SHA2565332be73f4848280f8212768d3a2e6af9c28c7c891d29a42fb23b6fd26a2ad7c
SHA51220261a093c19bca27ed7456b6712cabf440e36892db2d7103369a4c51919768757e3a13e61dfead7746e7da45c4d6f8b940eb4ae2c43e34779dd80aa27cc3c5c
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Filesize
135KB
MD580795ce16673d85a2cea017ec1356261
SHA130483b795c1157c63583817e5312c7664f40afdf
SHA2564932c2617cb23a04ed277d7c03fbed90acdf18b83ea5e21c35458d6d6612e388
SHA512bb20dc8b0409caf114462d52a7c8b249608e1b97dbf19c9fe9b77c3c78ad020240b737db69b65253ec2fd98e48f3616128149de3dd216c2bae530a3e6ae14ae0
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Filesize
135KB
MD5b48014a19842c0e8c0842ce7684653d6
SHA14d2dfd75646561e1e55495fe69794580e458786a
SHA25620425ba45cc7d57b78f1303417d8f6f953130af3f8f7298ed2305ce50f19b361
SHA5126964b5f93b277c1ce0c462e9591eefa5e8e49dc0bb144b6e1f46ebb4bee7ae6890460991b84f633eca49142b6e9b95aea1fdf8be8ab60cba797f59dd100335e6