1b59888d6384537c8efd4150a6070c8b7ded99f8c3b35ab2deb58491e8927969

General

Target

Debt-Details-737504944-05132021.xlsm
Size

196KB
MD5

422c09861a2824f055f820602cc50152
SHA1

fb1e3fd57c83499b265561f7a0b0d30c6c4a9c64
SHA256

25a5318acb0bb58d47fffcc5fff63c96f750bce41259970567d061cffc804f9a
SHA512

82ed42f816232cd2813320e95b75abfa07c668d125ea0e5834292e5dc65245e996bc0e6e6586ed41ac9c1d5b00785d908574010fb578d534e6e655e0eaf65c6e

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://185.183.96.233/44330.0326398148.dat

xlm40.dropper

http://51.89.115.125/44330.0326398148.dat

xlm40.dropper

http://190.14.37.64/44330.0326398148.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	904	1640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1800	1640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	992	1640	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
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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
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\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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1640 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE
1640 EXCEL.EXE

pid	process
1640	EXCEL.EXE

pid	process
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 904	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 1800	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	EXCEL.EXE	rundll32.exe
PID 1640 wrote to memory of 992	1640	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-737504944-05132021.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:904

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1800

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\lertio.cersw2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:992

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/904-62-0x0000000000000000-mapping.dmp

Download
memory/904-63-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/992-66-0x0000000000000000-mapping.dmp

Download
memory/1640-59-0x000000002F141000-0x000000002F144000-memory.dmp

Filesize
12KB

Download
memory/1640-60-0x0000000071081000-0x0000000071083000-memory.dmp

Filesize
8KB

Download
memory/1640-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1800-64-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads