a7fcf4db18ca60e8cf3db3a2c3e1525e4cf4f2dbee71e24eeb454e95af2d28cb

General

Target

document-352528369.xls
Size

88KB
MD5

bc2c7b5000c97d90fb90ca2ee4b42484
SHA1

7c70c29f8454d23690c4a305c35da5939b2f21da
SHA256

559fd631dce1aaf66ea3ba6590a583c749c92fc95c5eb2e10ef8eeb1ef9f27a0
SHA512

86083eb10ad4cf01fcc556920b4e7cb94741f970d52640977a78efec5ce9f073a4a6acf8303acec42356ec141e6d6f35304b1b14c6daab3c75551b800667bc53

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://casadodestino.com/ds/1802.gif

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	1544	1044	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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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\Toolbar\ShowDiscussionButton = "Yes"	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
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 (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\MenuExt\Se&nd to OneNote	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1044 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1044 EXCEL.EXE
1044 EXCEL.EXE
1044 EXCEL.EXE
1044 EXCEL.EXE
1044 EXCEL.EXE

pid	process
1044	EXCEL.EXE

pid	process
1044	EXCEL.EXE
1044	EXCEL.EXE
1044	EXCEL.EXE
1044	EXCEL.EXE
1044	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	EXCEL.EXE	rundll32.exe
PID 1044 wrote to memory of 1544	1044	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\document-352528369.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1044

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\idefje.ekfd,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1544

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/1044-2-0x000000002FB81000-0x000000002FB84000-memory.dmp

Filesize
12KB

Download
memory/1044-3-0x0000000071051000-0x0000000071053000-memory.dmp

Filesize
8KB

Download
memory/1044-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1544-6-0x0000000000000000-mapping.dmp

Download
memory/1544-7-0x00000000760A1000-0x00000000760A3000-memory.dmp

Filesize
8KB

Download
memory/1976-5-0x000007FEF77C0000-0x000007FEF7A3A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads