Overview
overview
7Static
static
3iLemon/lpk.dll
windows7-x64
7iLemon/lpk.dll
windows10-2004-x64
7iLemon/set...1].exe
windows7-x64
7iLemon/set...1].exe
windows10-2004-x64
7$PLUGINSDI...LL.dll
windows7-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows7-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...gs.dll
windows7-x64
3$PLUGINSDI...gs.dll
windows10-2004-x64
3$PLUGINSDI...dl.dll
windows7-x64
3$PLUGINSDI...dl.dll
windows10-2004-x64
31.3.1.1002...ar.exe
windows7-x64
61.3.1.1002...ar.exe
windows10-2004-x64
71.3.1.1002...ce.exe
windows7-x64
11.3.1.1002...ce.exe
windows10-2004-x64
11.3.1.1002...er.exe
windows7-x64
11.3.1.1002...er.exe
windows10-2004-x64
11.3.1.1002...64.exe
windows7-x64
11.3.1.1002...64.exe
windows10-2004-x64
11.3.1.1002...op.exe
windows7-x64
61.3.1.1002...op.exe
windows10-2004-x64
71.3.1.1002...te.exe
windows7-x64
11.3.1.1002...te.exe
windows10-2004-x64
1ShellExtHelper.dll
windows7-x64
7ShellExtHelper.dll
windows10-2004-x64
7ShellExtHelper64.dll
windows7-x64
7ShellExtHelper64.dll
windows10-2004-x64
7iLemon.exe
windows7-x64
6iLemon.exe
windows10-2004-x64
6Analysis
-
max time kernel
122s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
15-06-2024 06:58
Static task
static1
Behavioral task
behavioral1
Sample
iLemon/lpk.dll
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
iLemon/lpk.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
iLemon/setup_1.3.1.1002_qd[1].exe
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
iLemon/setup_1.3.1.1002_qd[1].exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win7-20240611-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win7-20240611-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240221-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral11
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win7-20240508-en
Behavioral task
behavioral12
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral13
Sample
$PLUGINSDIR/nsisdl.dll
Resource
win7-20240221-en
Behavioral task
behavioral14
Sample
$PLUGINSDIR/nsisdl.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral15
Sample
1.3.1.1002/LemonCalendar.exe
Resource
win7-20240611-en
Behavioral task
behavioral16
Sample
1.3.1.1002/LemonCalendar.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral17
Sample
1.3.1.1002/LemonService.exe
Resource
win7-20240508-en
Behavioral task
behavioral18
Sample
1.3.1.1002/LemonService.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral19
Sample
1.3.1.1002/RunningHelper.exe
Resource
win7-20240611-en
Behavioral task
behavioral20
Sample
1.3.1.1002/RunningHelper.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral21
Sample
1.3.1.1002/RunningHelper64.exe
Resource
win7-20240508-en
Behavioral task
behavioral22
Sample
1.3.1.1002/RunningHelper64.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral23
Sample
1.3.1.1002/SmartDesktop.exe
Resource
win7-20231129-en
Behavioral task
behavioral24
Sample
1.3.1.1002/SmartDesktop.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral25
Sample
1.3.1.1002/SmartNote.exe
Resource
win7-20240611-en
Behavioral task
behavioral26
Sample
1.3.1.1002/SmartNote.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral27
Sample
ShellExtHelper.dll
Resource
win7-20240508-en
Behavioral task
behavioral28
Sample
ShellExtHelper.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral29
Sample
ShellExtHelper64.dll
Resource
win7-20240221-en
Behavioral task
behavioral30
Sample
ShellExtHelper64.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral31
Sample
iLemon.exe
Resource
win7-20240221-en
Behavioral task
behavioral32
Sample
iLemon.exe
Resource
win10v2004-20240611-en
General
-
Target
1.3.1.1002/LemonCalendar.exe
-
Size
968KB
-
MD5
6316d6cbb865715433fabb26ef40475c
-
SHA1
26fe47aa5a8cba00724437f48ff2a945f6438388
-
SHA256
e85fcae499aa5adb7655fb969faeeddfd29d533848c2bb024d3cd5cbdabb1800
-
SHA512
8c199d0b84272a5604884895dbf48fe48ca3000d7a6010a51d1e65ad4f708e733077453c61ea11dc2cf16ea1f552feb86468d1ff3cc5feea1aae75084fd93587
-
SSDEEP
12288:8GMJPzFmrIyaAn+FJqbtMGapym5mWaaj6jIRnA3CKvFmdY8/riVjcP55CI7kqhpf:8Tx3Ak6KUm5gSRorX4bCI7kG4J7Y
Malware Config
Signatures
-
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
LemonCalendar.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\柠檬桌面 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\iLemon.exe\" /from=autorun" LemonCalendar.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
LemonCalendar.exedescription ioc process File opened for modification \??\PhysicalDrive0 LemonCalendar.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of FindShellTrayWindow 8 IoCs
Processes:
RunningHelper64.exeLemonCalendar.exepid process 2216 RunningHelper64.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe 2436 LemonCalendar.exe -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
LemonCalendar.exepid process 2436 LemonCalendar.exe 2436 LemonCalendar.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RunningHelper64.exepid process 2216 RunningHelper64.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
LemonCalendar.exedescription pid process target process PID 2436 wrote to memory of 2216 2436 LemonCalendar.exe RunningHelper64.exe PID 2436 wrote to memory of 2216 2436 LemonCalendar.exe RunningHelper64.exe PID 2436 wrote to memory of 2216 2436 LemonCalendar.exe RunningHelper64.exe PID 2436 wrote to memory of 2216 2436 LemonCalendar.exe RunningHelper64.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\1.3.1.1002\LemonCalendar.exe"C:\Users\Admin\AppData\Local\Temp\1.3.1.1002\LemonCalendar.exe"1⤵
- Adds Run key to start application
- Writes to the Master Boot Record (MBR)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\1.3.1.1002\RunningHelper64.exe"C:\Users\Admin\AppData\Local\Temp\1.3.1.1002\RunningHelper64.exe" /dll_launch=Install_Force2⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
-
memory/2436-0-0x0000000002C90000-0x0000000002C91000-memory.dmpFilesize
4KB