a7fcf4db18ca60e8cf3db3a2c3e1525e4cf4f2dbee71e24eeb454e95af2d28cb

General

Target

document-1550330529.xls
Size

88KB
MD5

f702f05f75fbde10384efefbdb305592
SHA1

54865fdf009d216932a0eaa2ed053a39f49dcc29
SHA256

35d1ccc69c4367606be744c74d09b9a39ec8b3b44d562f25fed272f22815ad9f
SHA512

b755744f84fa5d374abda9f465f084101912ee9af7b7241ba7a9af61e0b06aa26b4dc1e5a9985f9bed0b1283df6ae44e9dab5c42a3a5751a14364501fc7ba7d0

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	1076	1648	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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1648 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1648 EXCEL.EXE
1648 EXCEL.EXE
1648 EXCEL.EXE

pid	process
1648	EXCEL.EXE

pid	process
1648	EXCEL.EXE
1648	EXCEL.EXE
1648	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1076	1648	EXCEL.EXE	rundll32.exe
PID 1648 wrote to memory of 1956	1648	EXCEL.EXE	splwow64.exe
PID 1648 wrote to memory of 1956	1648	EXCEL.EXE	splwow64.exe
PID 1648 wrote to memory of 1956	1648	EXCEL.EXE	splwow64.exe
PID 1648 wrote to memory of 1956	1648	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-1550330529.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\idefje.ekfd,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1076

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1956

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/384-5-0x000007FEF6F80000-0x000007FEF71FA000-memory.dmp

Filesize
2.5MB

Download
memory/1076-6-0x0000000000000000-mapping.dmp

Download
memory/1076-7-0x0000000074D11000-0x0000000074D13000-memory.dmp

Filesize
8KB

Download
memory/1648-2-0x000000002F3E1000-0x000000002F3E4000-memory.dmp

Filesize
12KB

Download
memory/1648-3-0x0000000070E31000-0x0000000070E33000-memory.dmp

Filesize
8KB

Download
memory/1648-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1956-8-0x0000000000000000-mapping.dmp

Download
memory/1956-9-0x000007FEFB631000-0x000007FEFB633000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads