Analysis
- max time kernel
113s - max time network
124s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
01/12/2021, 23:29
Static task
static1
Behavioral task
behavioral1
Sample
3762.xlsm
Resource
win7-en-20211104
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
3762.xlsm
Resource
win10-en-20211014
windows10_x64
0 signatures
0 seconds
General
- Target 3762.xlsm
- Size 131KB
- Sample211201-3gkc2scab9
- SHA256 dd589bbbfcec22650ed4aeb33606b6d9ee4b2afdce6cb2e22435f34348714f81
- MD5 db35212aa7fbb90f60c862a82fc4f34c
- SHA1 9167a3c7816d6cba5335c74da2fc2c786b9c131e
- SHA512 1e507da789e0cd52ee1ccbe2cdf0f8bdf14e9fe312d4f4960176f4d0a85c567ad7c0ee30bd3c3a9aff50412e3a99d2d51b9fb8b77ae6ab24bfc4c75861c55e01
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Process spawned unexpected child process 2 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 3676 2720 wmic.exe 67 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2020 428 mshta.exe 68 - Blocklisted process makes network request 1 IoCs
flow pid Process 36 2020 mshta.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 2720 EXCEL.EXE - Suspicious use of AdjustPrivilegeToken 42 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3676 wmic.exe Token: SeSecurityPrivilege 3676 wmic.exe Token: SeTakeOwnershipPrivilege 3676 wmic.exe Token: SeLoadDriverPrivilege 3676 wmic.exe Token: SeSystemProfilePrivilege 3676 wmic.exe Token: SeSystemtimePrivilege 3676 wmic.exe Token: SeProfSingleProcessPrivilege 3676 wmic.exe Token: SeIncBasePriorityPrivilege 3676 wmic.exe Token: SeCreatePagefilePrivilege 3676 wmic.exe Token: SeBackupPrivilege 3676 wmic.exe Token: SeRestorePrivilege 3676 wmic.exe Token: SeShutdownPrivilege 3676 wmic.exe Token: SeDebugPrivilege 3676 wmic.exe Token: SeSystemEnvironmentPrivilege 3676 wmic.exe Token: SeRemoteShutdownPrivilege 3676 wmic.exe Token: SeUndockPrivilege 3676 wmic.exe Token: SeManageVolumePrivilege 3676 wmic.exe Token: 33 3676 wmic.exe Token: 34 3676 wmic.exe Token: 35 3676 wmic.exe Token: 36 3676 wmic.exe Token: SeIncreaseQuotaPrivilege 3676 wmic.exe Token: SeSecurityPrivilege 3676 wmic.exe Token: SeTakeOwnershipPrivilege 3676 wmic.exe Token: SeLoadDriverPrivilege 3676 wmic.exe Token: SeSystemProfilePrivilege 3676 wmic.exe Token: SeSystemtimePrivilege 3676 wmic.exe Token: SeProfSingleProcessPrivilege 3676 wmic.exe Token: SeIncBasePriorityPrivilege 3676 wmic.exe Token: SeCreatePagefilePrivilege 3676 wmic.exe Token: SeBackupPrivilege 3676 wmic.exe Token: SeRestorePrivilege 3676 wmic.exe Token: SeShutdownPrivilege 3676 wmic.exe Token: SeDebugPrivilege 3676 wmic.exe Token: SeSystemEnvironmentPrivilege 3676 wmic.exe Token: SeRemoteShutdownPrivilege 3676 wmic.exe Token: SeUndockPrivilege 3676 wmic.exe Token: SeManageVolumePrivilege 3676 wmic.exe Token: 33 3676 wmic.exe Token: 34 3676 wmic.exe Token: 35 3676 wmic.exe Token: 36 3676 wmic.exe - Suspicious use of SetWindowsHookEx 15 IoCs
pid Process 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE 2720 EXCEL.EXE - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2720 wrote to memory of 3676 2720 EXCEL.EXE 72 PID 2720 wrote to memory of 3676 2720 EXCEL.EXE 72
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\3762.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2720 -
C:\Windows\System32\Wbem\wmic.exewmic process call create "mshta C:\ProgramData\LZbir.rtf"2⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:3676
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C:\Windows\system32\mshta.exemshta C:\ProgramData\LZbir.rtf1⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
PID:2020