f135df298eb26bce0e9adb00e2a619cf15e5f0cf2966c3200020c50d55c1bdf2

General

Target

1467.xls
Size

58KB
MD5

f2eec4ae2d39c71e890ec9c6363ad610
SHA1

6d3bfff05123301d943c0fb35075dd1db4c5b4cb
SHA256

f135df298eb26bce0e9adb00e2a619cf15e5f0cf2966c3200020c50d55c1bdf2
SHA512

cd9de0a26a408df3705b4b31665203dfa6d7839acc168f60c94f7327cce10925414e6be64980c113fabd27ff70a687e09c87a5b10ae67eef21f86173e4766988

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://derocktech.com/k.php

xlm40.dropper

https://solemnenterprise.com/k.php

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

reg.exerundll32.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	1748	reg.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	936	1748	rundll32.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

1748 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 (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
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	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 (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 (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1748 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1748 wrote to memory of 824	1748	EXCEL.EXE	reg.exe
PID 1748 wrote to memory of 824	1748	EXCEL.EXE	reg.exe
PID 1748 wrote to memory of 824	1748	EXCEL.EXE	reg.exe
PID 1748 wrote to memory of 824	1748	EXCEL.EXE	reg.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	EXCEL.EXE	rundll32.exe
PID 1748 wrote to memory of 936	1748	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\1467.xls
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\d8xD.txt /y
2⤵
- Process spawned unexpected child process
PID:824

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\dRfcYx.txt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:936

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\Public\Documents\d8xD.txt
MD5
1084b35cb1aecef496dfdb263760a40c

SHA1
43d95f062749f3143838fe39460b3c5d541e194a

SHA256
48ccd7a8ed9873ff73eec7252ed9ce2882389aa43a5ec5ad072168c43320b25c

SHA512
9dbcfe0f39e04700f252b95cfb73a7977fe7a2ffe8de98510c9f62988300754c4e8eeb0a152ad87db71b28ee8c2fcb97d136215d2898ccbee5b8837a31eb7212

Download Submit
C:\Users\Public\Documents\dRfcYx.txt
MD5
f1eeba26186d1c003a0cbaf44f08b8d3

SHA1
1f539d8d6e1e1bb622f09600eb4dffbf0e2f407c

SHA256
d1c8a04839098f3af70c9ae173615dbcf2dfe132b85f6c3784972f61caabe21e

SHA512
a693edd9a50a45b30f270144ad0639fe7d7e204914b65d314fe107f933cc60de6bab679b9993b97c148f70202adb97adb910a0aec8a58feab35c8b1aa1363515

Download Submit
memory/824-6-0x0000000000000000-mapping.dmp

Download
memory/936-9-0x0000000000000000-mapping.dmp

Download
memory/936-10-0x0000000075EB1000-0x0000000075EB3000-memory.dmp

Filesize
8KB

Download
memory/1032-8-0x000007FEF7160000-0x000007FEF73DA000-memory.dmp

Filesize
2.5MB

Download
memory/1748-2-0x000000002FC41000-0x000000002FC44000-memory.dmp

Filesize
12KB

Download
memory/1748-3-0x0000000071011000-0x0000000071013000-memory.dmp

Filesize
8KB

Download
memory/1748-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1748-5-0x0000000002CD0000-0x0000000002CD1000-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