623aa89cf7b10f747121aff9c9cbb4793d62eeb47b24f69a01f5b8acb66117b2

General

Target

document-89196717.xls
Size

138KB
MD5

345f5489f62cf114deca5578f9ec8c13
SHA1

53028c6bd91b10c71bda19e6839c987e927ea482
SHA256

2a0e2ee51d91768fdd5304b33e64f8d66cd7448c1f3d629c1f457b1d501fff9a
SHA512

c87e860110ac8cc7c0f3d66cb3dce8cbeff2007cebd6e9056cb594c40c0467a968509289a0144bf9e594169f7e02f41969d895ddf5d84288caf85c235d48e9e8

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://gcfxb12aefoyn03epdoji.xyz/i.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	1900	1904	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\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
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\Toolbar	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
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\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
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1904 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1904 EXCEL.EXE
1904 EXCEL.EXE
1904 EXCEL.EXE

pid	process
1904	EXCEL.EXE

pid	process
1904	EXCEL.EXE
1904	EXCEL.EXE
1904	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	EXCEL.EXE	rundll32.exe
PID 1904 wrote to memory of 1900	1904	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\document-89196717.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1904

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1900

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/1848-5-0x000007FEF7730000-0x000007FEF79AA000-memory.dmp

Filesize
2.5MB

Download
memory/1900-6-0x0000000000000000-mapping.dmp

Download
memory/1900-7-0x00000000766F1000-0x00000000766F3000-memory.dmp

Filesize
8KB

Download
memory/1904-2-0x000000002FD31000-0x000000002FD34000-memory.dmp

Filesize
12KB

Download
memory/1904-3-0x00000000715E1000-0x00000000715E3000-memory.dmp

Filesize
8KB

Download
memory/1904-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads