149e5107cdb4f194c71abbe0c936b81605d438359fd7752cc32d9ee0f0eb8ee5

General

Target

document-1575131402.xls
Size

88KB
MD5

aaeb7fd6a8c79dcc15a0f34da16ecc65
SHA1

31533edf4277d896dbe0a4bf4529f1b4f2f977f5
SHA256

a888b06e54903b6141f89efa8d1f633309444b51ed89911f3d33e6d181050681
SHA512

f20ecd74a45d49c28dfee04c44375209594e3b60a98fcc3757a3d5686b5868361b76a46e26aeda68d60450470d764a9747b57db3896672c1b864d6959e319832

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://ishikapress.com/ds/1802.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	1160	1932	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
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 (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
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\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1932 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

1932 EXCEL.EXE
1932 EXCEL.EXE
1932 EXCEL.EXE
1932 EXCEL.EXE
1932 EXCEL.EXE
1932 EXCEL.EXE
1932 EXCEL.EXE

pid	process
1932	EXCEL.EXE

pid	process
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE
1932	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	EXCEL.EXE	rundll32.exe
PID 1932 wrote to memory of 1160	1932	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-1575131402.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\idefje.ekfd,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1160

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1160-8-0x0000000000000000-mapping.dmp

Download
memory/1160-9-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/1776-7-0x000007FEF6E90000-0x000007FEF710A000-memory.dmp

Filesize
2.5MB

Download
memory/1932-2-0x000000002F3B1000-0x000000002F3B4000-memory.dmp

Filesize
12KB

Download
memory/1932-3-0x0000000070BA1000-0x0000000070BA3000-memory.dmp

Filesize
8KB

Download
memory/1932-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1932-5-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads