8407e3a90ed395fff8381a114ebfd4eb46aaed8676c91e41331540976ea5c455

General

Target

507a6d57570a5774ce656a1b82535a4992e2320c6a760a5e957665263bf102cd.xls
Size

274KB
MD5

96ac4b6f8184f21eadac4e4f719447de
SHA1

e67bb5d1240f2572dac3c4bf673cdfa13a1851c1
SHA256

507a6d57570a5774ce656a1b82535a4992e2320c6a760a5e957665263bf102cd
SHA512

a90031551504452a3a1a8348a7bb49562b53bbb0dfce86b188b7436756232cf3aa69741388ae0b1101fb03c4a66b22ca2d721567bb7de3b3b8a2da491fddc2ca

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://parkisolutions.com/nerugin.dll

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	1732	1084	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\Toolbar	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\Se&nd to OneNote	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\MenuExt	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1084 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	EXCEL.EXE	rundll32.exe
PID 1084 wrote to memory of 1732	1084	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\507a6d57570a5774ce656a1b82535a4992e2320c6a760a5e957665263bf102cd.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\iofjgjfldnd.hde,StartW
2⤵
- Process spawned unexpected child process
PID:1732

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1084-60-0x000000002FE41000-0x000000002FE44000-memory.dmp

Filesize
12KB

Download
memory/1084-61-0x00000000715A1000-0x00000000715A3000-memory.dmp

Filesize
8KB

Download
memory/1084-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1732-63-0x0000000000000000-mapping.dmp

Download
memory/1732-64-0x00000000752F1000-0x00000000752F3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads