e7fdb1158e0a228cde2d2aa03f7dd3a5fda12417ce2f2bea4b21a654152ac64f

Target

docs_ (35).xls
Size

317KB
MD5

08510e105da0cd70372df801da0d50d1
SHA1

c14c05c17dfc2896e461c62e9dad7f81d1d48cdb
SHA256

37ea0eaeed142c4a0d1d4e3b801a8cef3dc5f2cd69a5af4f59bd817362833020
SHA512

5283efd05dd547ecaecd62236245533496fce006e7ea228a11efed7e56ae541d4c691f48b927bd1a390bb853acf5b95cc6a5aab1a3a4311f2ee292eec54ea747

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://skyflyfares.com/ds/1602.gif

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	1636	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
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
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 (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
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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\Se&nd to OneNote	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 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	EXCEL.EXE	rundll32.exe
PID 292 wrote to memory of 1636	292	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\docs_ (35).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 ..\zdfb.zgz,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1636

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/292-2-0x000000002F551000-0x000000002F554000-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/1636-6-0x0000000000000000-mapping.dmp

Download
memory/1636-7-0x0000000076861000-0x0000000076863000-memory.dmp

Filesize
8KB

Download
memory/1796-5-0x000007FEF6B80000-0x000007FEF6DFA000-memory.dmp

Filesize
2.5MB

Download