6a75b37a3f47cf8b5237526528aad5ff12ba1f498773caac507448f282ce5cc9

General

Target

File_145565.xlsb
Size

233KB
MD5

99421c3f76ea8ef636173c6a3fc43e05
SHA1

439c69a29dc2f4d7b52658cc78053c6153e62582
SHA256

6a75b37a3f47cf8b5237526528aad5ff12ba1f498773caac507448f282ce5cc9
SHA512

90fc816e5645b1f72fda82d7d26e3d0f711a4ad588d6a6aa477d1f25545f00fbab400c954d2c5de69de63340bac6b8a6500f7c66197466d94f53879c2f87a5c3

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://195.123.222.188/campo/e/e1

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	1760	1856	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-1-5-21-293278959-2699126792-324916226-1000\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\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 (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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1856 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1856 EXCEL.EXE
1856 EXCEL.EXE
1856 EXCEL.EXE

pid	process
1856	EXCEL.EXE

pid	process
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 1760	1856	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\File_145565.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\flotsh\h4gf.dll,DllRegisterServer1
2⤵
- Process spawned unexpected child process
PID:1760

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\flotsh\h4gf.dll

MD5
fc89a9914f7b63308361f68029eefdfa

SHA1
2fba00d691a1db97c869108f6cdf457643266609

SHA256
6c71c14a51893eccde30b9e1c5241759d4282a0549d7364276ac7f50d784f548

SHA512
64d22b4ae4ee204a68ec567d1aca020d868c786ce02f351cb46b6efa592090e26705c6710252607bbfebe787cc02157e4c4d54307e201db3ef7a94f08b30c18a

Download Submit
memory/468-5-0x000007FEF67C0000-0x000007FEF6A3A000-memory.dmp

Filesize
2.5MB

Download
memory/1760-6-0x0000000000000000-mapping.dmp

Download
memory/1760-7-0x00000000767E1000-0x00000000767E3000-memory.dmp

Filesize
8KB

Download
memory/1856-2-0x000000002F131000-0x000000002F134000-memory.dmp

Filesize
12KB

Download
memory/1856-3-0x00000000719D1000-0x00000000719D3000-memory.dmp

Filesize
8KB

Download
memory/1856-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads