1cd45cb289571c6dd78d5cacba444eb4b870ba105f22db28270c98cb8e521709

General

Target

Documents_635358571.xls
Size

273KB
MD5

93dfa9ea842aa55647c9aacfa43e45c3
SHA1

2b6e02a58673871f6b4c0f227c1756f030b58dd1
SHA256

1cd45cb289571c6dd78d5cacba444eb4b870ba105f22db28270c98cb8e521709
SHA512

25fdc515615e35a712dbe6fe49fd27b822682d546f7f8cceb6f9125a1ca8dfec37682fcc9735ef30efa8e87ea677d8b82e2eed11464c78737c0b6e6a71fb0b98

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://sssolutionsllc.org/k.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	1684	1832	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\Se&nd to OneNote	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\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
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	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1832 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE

pid	process
1832	EXCEL.EXE

pid	process
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 1684	1832	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\Documents_635358571.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\sfdgsd.dss,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1684

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

C:\Users\Admin\sfdgsd.dss
MD5
7694046fa90bf472361b28054e266a77

SHA1
98efef5eaf6f5d8dcad63238a63ad274fee82c05

SHA256
0e6fb6906c9f7e59d407ad3864a24881862ca8302df6dacbb14dc8ad7db6e0e7

SHA512
eff236036ab69736b170799e6d5ff04e858e691cc4f30409ffbc265ba867b5d23ea0be702ea836e4c28c1913a8d8bdff076a796b9a0cde437e632f8977c8d066

Download Submit
memory/332-5-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmp

Filesize
2.5MB

Download
memory/1684-6-0x0000000000000000-mapping.dmp

Download
memory/1684-7-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1832-2-0x000000002F9A1000-0x000000002F9A4000-memory.dmp

Filesize
12KB

Download
memory/1832-3-0x0000000071811000-0x0000000071813000-memory.dmp

Filesize
8KB

Download
memory/1832-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads