16a0c2f741a14c423b7abe293e26f711fdb984fc52064982d874bf310c520b12

General

Target

document-1955896638.xls
Size

85KB
MD5

66e5e724f99a77455e36bca858366e5b
SHA1

aad43897bccde3be594cf89863341050b6eed55a
SHA256

16a0c2f741a14c423b7abe293e26f711fdb984fc52064982d874bf310c520b12
SHA512

e96dd67971cd9e55d37278e65f59060a1f708dc2d841d6aae02bc5440a3c99dc5fcfbebc98b68fea928b4df52ca59679d03af1dca06c553a2fe68a884b056571

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://kfzhm28pwzrlk02bmjy.com/mrch.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	776	1844	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\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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
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
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\Se&nd to OneNote	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1844 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1844 EXCEL.EXE
1844 EXCEL.EXE
1844 EXCEL.EXE
1844 EXCEL.EXE
1844 EXCEL.EXE

pid	process
1844	EXCEL.EXE

pid	process
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 776	1844	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-1955896638.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1844

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\IEUDLK.CJF,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:776

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/736-10-0x000007FEF7900000-0x000007FEF7B7A000-memory.dmp

Filesize
2.5MB

Download
memory/776-11-0x0000000000000000-mapping.dmp

Download
memory/776-12-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1844-2-0x000000002F711000-0x000000002F714000-memory.dmp

Filesize
12KB

Download
memory/1844-3-0x00000000715B1000-0x00000000715B3000-memory.dmp

Filesize
8KB

Download
memory/1844-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1844-5-0x0000000001D20000-0x0000000001D21000-memory.dmp

Filesize
4KB

Download
memory/1844-7-0x0000000001D20000-0x0000000001D21000-memory.dmp

Filesize
4KB

Download
memory/1844-9-0x0000000001D20000-0x0000000001D21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads