649e5a00f34947d6f200f29666e38e6f66c264ec4bf5346b1b68770ca95ca095

General

Target

Debt-Details-1932499915-05132021.xlsm
Size

196KB
MD5

4eac2ae794168009d07bcf6ce582f06e
SHA1

567a2839f36b42e30d114f56f4dd775bdfecd8a1
SHA256

311e7aea7bb5f1b450543acb103eb34fa0d1d3e0e2e051474ad4ceb73159befa
SHA512

a88fc0a8ac489b7b7a78ed1cce91ce48195b1220ac8a512d5f44cd0bddf5ebf48906f1f0100aab889acf3a8c40570c70921f9d1f386dd4a6330405dc75c86b44

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://185.183.96.233/44330.0227946759.dat

xlm40.dropper

http://51.89.115.125/44330.0227946759.dat

xlm40.dropper

http://190.14.37.64/44330.0227946759.dat

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.exerundll32.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	280	1688	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1036	1688	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	320	1688	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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1688 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE
1688 EXCEL.EXE

pid	process
1688	EXCEL.EXE

pid	process
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 280	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 1036	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	EXCEL.EXE	rundll32.exe
PID 1688 wrote to memory of 320	1688	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\Debt-Details-1932499915-05132021.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:280

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1036

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:320

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

memory/280-63-0x0000000000000000-mapping.dmp

Download
memory/280-64-0x0000000075011000-0x0000000075013000-memory.dmp

Filesize
8KB

Download
memory/320-67-0x0000000000000000-mapping.dmp

Download
memory/1036-65-0x0000000000000000-mapping.dmp

Download
memory/1688-60-0x000000002FCD1000-0x000000002FCD4000-memory.dmp

Filesize
12KB

Download
memory/1688-61-0x0000000071361000-0x0000000071363000-memory.dmp

Filesize
8KB

Download
memory/1688-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads