f82a3b15901da167017395e4158995302d01abbb9b7f259465eca8f66f42fb5c

General

Target

88da57ba_by_Libranalysis.xls
Size

293KB
MD5

88da57baad066838d62daa0d17658eb0
SHA1

c9d47b8cf3debfe3f714c6eb497829a8ad2bd1fc
SHA256

f82a3b15901da167017395e4158995302d01abbb9b7f259465eca8f66f42fb5c
SHA512

561401ec068bea4d1907ca81f66fceeb21d93fbca3e1fc1fafd6c68bc7df465dbaf988e4bbd8f38a54dceade57f12428b9ec20c5e5a43c45e4a1c662dc4919d0

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://otusmail.com/b/vegas.dll

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	984	768	rundll32.exe	EXCEL.EXE

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

984 rundll32.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

pid	process
984	rundll32.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 (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

768 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

768 EXCEL.EXE
768 EXCEL.EXE
768 EXCEL.EXE
768 EXCEL.EXE
768 EXCEL.EXE
768 EXCEL.EXE
768 EXCEL.EXE

pid	process
768	EXCEL.EXE

pid	process
768	EXCEL.EXE
768	EXCEL.EXE
768	EXCEL.EXE
768	EXCEL.EXE
768	EXCEL.EXE
768	EXCEL.EXE
768	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	EXCEL.EXE	rundll32.exe
PID 768 wrote to memory of 984	768	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\88da57ba_by_Libranalysis.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:768

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\bsdnbsej.dbw,PluginInit
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:984

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

C:\Users\Admin\bsdnbsej.dbw
MD5
b80f4b91c29963df1cfd0d0a8a30e5c6

SHA1
09c6ae06e0c10672d91f6850118f41dc3dd66e72

SHA256
0a87bd3bb60320b21e493341b70519af4e46c2e969038d6d89b536cd37aa11d9

SHA512
bdcd3009ed3499055cf73ef1c4dd4bd0942c8b81c395cecf3c9da790e4867055059d10b05451476d7da98bbbf472c40536e7a09158b5de92c57a74e36396d10c

Download Submit
\Users\Admin\bsdnbsej.dbw
MD5
b80f4b91c29963df1cfd0d0a8a30e5c6

SHA1
09c6ae06e0c10672d91f6850118f41dc3dd66e72

SHA256
0a87bd3bb60320b21e493341b70519af4e46c2e969038d6d89b536cd37aa11d9

SHA512
bdcd3009ed3499055cf73ef1c4dd4bd0942c8b81c395cecf3c9da790e4867055059d10b05451476d7da98bbbf472c40536e7a09158b5de92c57a74e36396d10c

Download Submit
memory/768-59-0x000000002F531000-0x000000002F534000-memory.dmp

Filesize
12KB

Download
memory/768-60-0x0000000071981000-0x0000000071983000-memory.dmp

Filesize
8KB

Download
memory/768-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/984-62-0x0000000000000000-mapping.dmp

Download
memory/984-63-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/984-67-0x000000006C9B0000-0x000000006CB3C000-memory.dmp

Filesize
1.5MB

Download
memory/984-66-0x000000006C9B0000-0x000000006C9D8000-memory.dmp

Filesize
160KB

Download
memory/984-68-0x0000000000170000-0x0000000000171000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads