b08dccba7b50a181160d47d504146388142a223d21bcfb84f9d26c2b964f374f

General

Target

document-197066197.xls
Size

90KB
MD5

b1b373079e3ce83ccea85c2c6c50f10c
SHA1

9917e63c334dd1d81182631a5776c922f797d2f3
SHA256

edfb3775902364ce01d274c0203c78d849f2cfdd07e05bd165649288f7185e1c
SHA512

31c9702a7825c27b38422543fe97ff41ffbdf1442b8b0cba62c61f28aac87428047a5efd6ca9ca5540d88c5dd5fdeff3e9cc7db12a8f34219216a0f484ce64cc

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://45.11.183.181/22.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	1080	1940	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 (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 (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
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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1940 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1940 EXCEL.EXE
1940 EXCEL.EXE
1940 EXCEL.EXE

pid	process
1940	EXCEL.EXE

pid	process
1940	EXCEL.EXE
1940	EXCEL.EXE
1940	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	EXCEL.EXE	rundll32.exe
PID 1940 wrote to memory of 1080	1940	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-197066197.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\rieuro.vnt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1080

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/296-5-0x000007FEF7120000-0x000007FEF739A000-memory.dmp

Filesize
2.5MB

Download
memory/1080-6-0x0000000000000000-mapping.dmp

Download
memory/1080-7-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/1940-2-0x000000002F481000-0x000000002F484000-memory.dmp

Filesize
12KB

Download
memory/1940-3-0x0000000070F21000-0x0000000070F23000-memory.dmp

Filesize
8KB

Download
memory/1940-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads