a5b8add7f3d2b50be086900fdfc81ea9666e7a87705a0e7e812c0edaa169e58d

General

Target

document-1100242207.xls
Size

88KB
MD5

954d0877c5c24a81909a48b11c456122
SHA1

6388c4c76036560dbde22cec476367fc85df42de
SHA256

a5b8add7f3d2b50be086900fdfc81ea9666e7a87705a0e7e812c0edaa169e58d
SHA512

6d42c53df6c8d68d15169f0125485e4d1d7a69d87dacf931faf413dadb14180f3fc32deffdc5a63c4a2d5d0719ebe48df9f53f0ab277e988e7b176e59ff31e60

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://fb25er43hfy.com/fb26.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	944	1944	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 (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
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\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\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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1944 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1944 EXCEL.EXE
1944 EXCEL.EXE
1944 EXCEL.EXE

pid	process
1944	EXCEL.EXE

pid	process
1944	EXCEL.EXE
1944	EXCEL.EXE
1944	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	EXCEL.EXE	rundll32.exe
PID 1944 wrote to memory of 944	1944	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-1100242207.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\jkfledf.fkri,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:944

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/944-6-0x0000000000000000-mapping.dmp

Download
memory/944-7-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1736-5-0x000007FEF79D0000-0x000007FEF7C4A000-memory.dmp

Filesize
2.5MB

Download
memory/1944-2-0x000000002F111000-0x000000002F114000-memory.dmp

Filesize
12KB

Download
memory/1944-3-0x0000000071821000-0x0000000071823000-memory.dmp

Filesize
8KB

Download
memory/1944-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads