5a567d8a0d5aac4ed14b29827109754543d099a2d95b97e2173ceccf87d5f6b7

General

Target

document-386407988.xls
Size

39KB
MD5

1fa4dc11ca13bb6b0007697ea948d103
SHA1

34490a498d48b0aa3a8714811f72359f1e68b633
SHA256

d90f43e55fea4004620ef90b8a8440493e23e4035b208afaaff7262453217903
SHA512

0852782c9db46fff15a6a5c82f29f79d49593ae0109109aa3d0e186ab1a3c7ab0e440a4803b847bd36c75132a71fe0ceb9332aac0d8ba2e6c1bd2b65356bdf87

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://dzw10jpcgj03fckc.com/inda.xls

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	1156	292	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

292 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

292 EXCEL.EXE
292 EXCEL.EXE
292 EXCEL.EXE
292 EXCEL.EXE
292 EXCEL.EXE
292 EXCEL.EXE
292 EXCEL.EXE

pid	process
292	EXCEL.EXE

pid	process
292	EXCEL.EXE
292	EXCEL.EXE
292	EXCEL.EXE
292	EXCEL.EXE
292	EXCEL.EXE
292	EXCEL.EXE
292	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1156	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	splwow64.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	splwow64.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	splwow64.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	splwow64.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\document-386407988.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:292

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\fkruf.djr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1156

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1636

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/292-2-0x000000002F411000-0x000000002F414000-memory.dmp

Filesize
12KB

Download
memory/292-3-0x0000000071CE1000-0x0000000071CE3000-memory.dmp

Filesize
8KB

Download
memory/292-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/292-5-0x0000000002050000-0x0000000002051000-memory.dmp

Filesize
4KB

Download
memory/1156-8-0x0000000000000000-mapping.dmp

Download
memory/1156-9-0x0000000076861000-0x0000000076863000-memory.dmp

Filesize
8KB

Download
memory/1636-10-0x0000000000000000-mapping.dmp

Download
memory/1636-11-0x000007FEFC4E1000-0x000007FEFC4E3000-memory.dmp

Filesize
8KB

Download
memory/1752-7-0x000007FEF6B80000-0x000007FEF6DFA000-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