02c9224f7336063b1eeafbdc3b3fd53acd767853d8a63e3e7fd65c1fb4c127f4

General

Target

presentation2020_v3.xls.exe
Size

798KB
MD5

c416438f415469141c8c868de2fc262d
SHA1

e54858f2a8039f36042c4b8bb95080e91a3d684a
SHA256

02c9224f7336063b1eeafbdc3b3fd53acd767853d8a63e3e7fd65c1fb4c127f4
SHA512

dd397eb7fa68ff3d72af5b1cb938cd932635e3d5221b116578b063ebac9bf0b759ba6b082cb2ca61cc4b7076601857bc66150ccc6266612f8be81a0bd5ba4c2e

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

presentation_app_launcher.exe

pid process

3824 presentation_app_launcher.exe

pid	process
3824	presentation_app_launcher.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE
3912	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3912 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2172 WerFault.exe
Token: SeBackupPrivilege 2172 WerFault.exe
Token: SeDebugPrivilege 2172 WerFault.exe
Modifies registry class 1 IoCs

Processes:

presentation2020_v3.xls.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000_Classes\Local Settings presentation2020_v3.xls.exe

description	pid	process
Token: SeRestorePrivilege	2172	WerFault.exe
Token: SeBackupPrivilege	2172	WerFault.exe
Token: SeDebugPrivilege	2172	WerFault.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000_Classes\Local Settings	presentation2020_v3.xls.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

presentation2020_v3.xls.exe

description	pid	process	target process
PID 2948 wrote to memory of 3824	2948	presentation2020_v3.xls.exe	presentation_app_launcher.exe
PID 2948 wrote to memory of 3824	2948	presentation2020_v3.xls.exe	presentation_app_launcher.exe
PID 2948 wrote to memory of 3824	2948	presentation2020_v3.xls.exe	presentation_app_launcher.exe
PID 2948 wrote to memory of 3912	2948	presentation2020_v3.xls.exe	EXCEL.EXE
PID 2948 wrote to memory of 3912	2948	presentation2020_v3.xls.exe	EXCEL.EXE
PID 2948 wrote to memory of 3912	2948	presentation2020_v3.xls.exe	EXCEL.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2172 3824 WerFault.exe presentation_app_launcher.exe

pid	pid_target	process	target process
2172	3824	WerFault.exe	presentation_app_launcher.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe
2172	WerFault.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

C:\Users\Admin\AppData\Local\Temp\presentation2020_v3.xls.exe
"C:\Users\Admin\AppData\Local\Temp\presentation2020_v3.xls.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2948

C:\Users\Admin\AppData\Local\Temp\presentation_app_launcher.exe
"C:\Users\Admin\AppData\Local\Temp\presentation_app_launcher.exe"
2⤵
- Executes dropped EXE
PID:3824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 1108
3⤵
- Suspicious use of AdjustPrivilegeToken
- Program crash
- Suspicious behavior: EnumeratesProcesses
PID:2172

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\business-plan-workbook.xlsx"
2⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Enumerates system info in registry
- Checks processor information in registry
PID:3912

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\business-plan-workbook.xlsx

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C:\Users\Admin\AppData\Local\Temp\presentation_app_launcher.exe

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C:\Users\Admin\AppData\Local\Temp\presentation_app_launcher.exe

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memory/2172-6-0x0000000005260000-0x0000000005261000-memory.dmp

Filesize
4KB

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memory/2172-15-0x0000000005660000-0x0000000005661000-memory.dmp

Filesize
4KB

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memory/2172-5-0x0000000004E60000-0x0000000004E61000-memory.dmp

Filesize
4KB

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memory/3824-7-0x0000000000000000-mapping.dmp

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memory/3824-8-0x0000000000000000-mapping.dmp

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memory/3824-0-0x0000000000000000-mapping.dmp

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memory/3824-9-0x0000000000000000-mapping.dmp

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memory/3824-10-0x0000000000000000-mapping.dmp

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memory/3824-12-0x0000000000000000-mapping.dmp

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memory/3824-11-0x0000000000000000-mapping.dmp

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memory/3824-13-0x0000000000000000-mapping.dmp

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memory/3824-14-0x0000000000000000-mapping.dmp

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memory/3912-3-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads