c94ac6548943c1f9a85ed599a81ce7fefa81092ee7ad9cce48b3d46a522a9773

Resubmissions

17-12-2020 18:26

201217-fl25lwqv5n 10

08-12-2020 18:10

201208-ejh9brbyes 8

Analysis

max time kernel
62s
max time network
102s
platform
windows7_x64
resource
win7v20201028
submitted
17-12-2020 18:26

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General

Target

Inf-855.xls
Size

31KB
MD5

7c7dfa4acc8c7767eded7450a434a355
SHA1

2ee1b3d1376ca3c953fcf2385a478367be408b25
SHA256

c94ac6548943c1f9a85ed599a81ce7fefa81092ee7ad9cce48b3d46a522a9773
SHA512

4c2d9ef6374a9d98c1c0608ef0c1d73a41a3bcac917a7320d0f051dabf9a732dd2efc1cd0299599918d81f59223c5c6003e9153bc89c1c661618dcffd0b2dd6b

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://mobitel-servis.si/vendor.php

xlm40.dropper

https://leadingpips.com/crypt.php

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	824	748	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	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
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	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
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

748 EXCEL.EXE
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

EXCEL.EXE

pid process

748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE
748 EXCEL.EXE

pid	process
748	EXCEL.EXE

pid	process
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE
748	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	EXCEL.EXE	rundll32.exe
PID 748 wrote to memory of 824	748	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\Inf-855.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\Kk9.txt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:824

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\Documents\Kk9.txt
MD5
2f6c40d0a46c538371f001472b017e32

SHA1
6d9539f2a9a4cf3dd0b87f1e99ae740c9c395280

SHA256
72732ac44db9d6db3c2df1268e842a78c9ec5ddef9b4559a51e55d90d943c258

SHA512
2164b45287738fc1d9b73171a87e70ba6a8efdccbb9ddcdd084b77083dfcadd5d8d8ff450be6f41433d6047730413175761791f307855bd99c6371a7626d53c1

Download Submit
memory/824-3-0x0000000000000000-mapping.dmp

Download
memory/1520-2-0x000007FEF7790000-0x000007FEF7A0A000-memory.dmp

Filesize
2.5MB

Download