bcaa5fe5865a1a230a51fe5b0214499dafb1b937378268c9bbfd5fd5e84fdb15

General

Target

Attachment_97504.xlsb
Size

197KB
MD5

5c5ef91f7bdb367537ceadab633f0723
SHA1

ca774e6f3cfb98d736ce1c385d1f73b0a293b2a0
SHA256

bcaa5fe5865a1a230a51fe5b0214499dafb1b937378268c9bbfd5fd5e84fdb15
SHA512

bc7d55eb89b7da06beb53c148337e10cbea9d4d67474d79b355be5cf80d3183558e21a6a7fb2e50c9a6c0d2348114e886cb1f095c6f64262ca857f362b344b8b

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://195.123.219.21/campo/t3/t3

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	1512	1656	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 (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
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

1656 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE

pid	process
1656	EXCEL.EXE

pid	process
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	EXCEL.EXE	rundll32.exe
PID 1656 wrote to memory of 1512	1656	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\Attachment_97504.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\uoxv\80.dll,DllRegisterServer1
2⤵
- Process spawned unexpected child process
PID:1512

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

C:\ProgramData\uoxv\80.dll
MD5
9201ed6616d300c8d8f798da51c9d2c5

SHA1
d540c46241acc924db74a4a20cd3ecc7c70d1153

SHA256
b21f18b08e23ceec9ce88678f1d60000486976c6f8a83e830e5fd34a13736c06

SHA512
d12bbc44cddf615e8bb7b4739d2f3084618e0a1b91df908a45ea437baa88188df34be5ee3f9df2a63639ac2ee6c87c2441c2e9194b9f7cf151a7559f395b8562

Download Submit
memory/1512-6-0x0000000000000000-mapping.dmp

Download
memory/1512-7-0x00000000765A1000-0x00000000765A3000-memory.dmp

Filesize
8KB

Download
memory/1656-2-0x000000002F6B1000-0x000000002F6B4000-memory.dmp

Filesize
12KB

Download
memory/1656-3-0x0000000071A81000-0x0000000071A83000-memory.dmp

Filesize
8KB

Download
memory/1656-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1732-5-0x000007FEF7BD0000-0x000007FEF7E4A000-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