438fc9f6931a33ae2ac94848f8b2c3876b3ddf4e4d58c5ed403ca49da3366a34

General

Target

case_142297110_1765967889.xlsm
Size

149KB
MD5

cb9f4477fbf6f33c8de41d3a2febcf0f
SHA1

97d398eed15462aeeaff7a7b9ef93a61fdf6370d
SHA256

438fc9f6931a33ae2ac94848f8b2c3876b3ddf4e4d58c5ed403ca49da3366a34
SHA512

b6517693a5a17270ca180c6ec0e6edea0629dbed28a69499247f0dbd2993344417d1f868afbbd8b9fdee21b6321a5ba57a31c95f5d1fc06ff13c1302f53d6969

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.ceder-invest.be/sass/capital.php

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	996	748	rundll32.exe	EXCEL.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

748 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE

pid	process
748	EXCEL.EXE

pid	process
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 996	748	EXCEL.EXE	rundll32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\case_142297110_1765967889.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Krock.KOD,StartW
2⤵
- Process spawned unexpected child process
PID:996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/748-2-0x000000002F151000-0x000000002F154000-memory.dmp

Filesize
12KB

Download
memory/748-3-0x0000000071461000-0x0000000071463000-memory.dmp

Filesize
8KB

Download
memory/748-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/996-6-0x0000000000000000-mapping.dmp

Download
memory/996-7-0x0000000075301000-0x0000000075303000-memory.dmp

Filesize
8KB

Download
memory/1516-5-0x000007FEF7500000-0x000007FEF777A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads