Analysis
- max time kernel
140s - max time network
143s - platform
windows10_x64 - resource
win10v20201028 - submitted
30/03/2021, 17:50
Static task
static1
Behavioral task
behavioral1
Sample
document-1801844583.xlsm
Resource
win7v20201028
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1801844583.xlsm
Resource
win10v20201028
0 signatures
0 seconds
General
- Target document-1801844583.xlsm
- Size 105KB
- Sample210330-tw33m3gaws
- SHA256 f75eb673f63060d1a8726b6d7255555eda5873b8a95c8efcea1bb9eb61972c1f
- MD5 e318c284205bd6df674722e362e89f84
- SHA1 0c34215a6757d1b4f5d468e67d76d1fde572d362
- SHA512 0da9a7dcbd5a2925fb2cd63ff589af4df2af4dfb13c6a8aa77ab5f49dc6872d72f523c681390794142ecffd6c6b6bd4e7b04f643ddd1ee21c65171d01614c529
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Family
-
icedid
Campaign
-
3717128962
C2
-
usaaforced.fun
Signatures
- Process spawned unexpected child process 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1856 636 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3764 636 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3500 636 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4036 636 rundll32.exe 67 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1016 636 rundll32.exe 67 - IcedID First Stage Loader 1 IoCs
resource yara_rule behavioral2/memory/1856-10-0x0000018A140D0000-0x0000018A140D7000-memory.dmp IcedidFirstLoader - Blocklisted process makes network request 6 IoCs
flow pid Process 54 1856 rundll32.exe 56 1856 rundll32.exe 57 4036 rundll32.exe 58 4036 rundll32.exe 59 1016 rundll32.exe 60 1016 rundll32.exe - Loads dropped DLL 3 IoCs
pid Process 1856 rundll32.exe 4036 rundll32.exe 1016 rundll32.exe - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 636 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1856 rundll32.exe 1856 rundll32.exe 4036 rundll32.exe 4036 rundll32.exe 1016 rundll32.exe 1016 rundll32.exe - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE 636 EXCEL.EXE - Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 636 wrote to memory of 1856 636 EXCEL.EXE 81 PID 636 wrote to memory of 1856 636 EXCEL.EXE 81 PID 636 wrote to memory of 3764 636 EXCEL.EXE 82 PID 636 wrote to memory of 3764 636 EXCEL.EXE 82 PID 636 wrote to memory of 3500 636 EXCEL.EXE 83 PID 636 wrote to memory of 3500 636 EXCEL.EXE 83 PID 636 wrote to memory of 4036 636 EXCEL.EXE 84 PID 636 wrote to memory of 4036 636 EXCEL.EXE 84 PID 636 wrote to memory of 1016 636 EXCEL.EXE 85 PID 636 wrote to memory of 1016 636 EXCEL.EXE 85
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\document-1801844583.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:636 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\ksjvoefv.skd,DllRegisterServer2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:1856
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-
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\ksjvoefv.skd1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3764
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-
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\ksjvoefv.skd2,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3500
-
-
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\ksjvoefv.skd3,DllRegisterServer2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:4036
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-
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\ksjvoefv.skd4,DllRegisterServer2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:1016
-