formbook | 8d9a34f51bcef521b4dad284038743c1cce9b9481d558225e33add85c4c9173b

General

Target

bin 1.xls
Size

183KB
MD5

ad085c2d0b11bd6268b5cf5e1f86c6d2
SHA1

20aa89a8d2cb83226065e4ecf97799409f9fd2ae
SHA256

8d9a34f51bcef521b4dad284038743c1cce9b9481d558225e33add85c4c9173b
SHA512

3ff47f33dc1fb6d9e9197c345153febe4388923ac7e27e87e3ea97d2bf7dde7dd62fcc02f2768fabd6ac4764bf48df0f0b6388719167b8b9ba1b350e16e44b12

Score

10^/10

rat spyware evasion trojan stealer formbook

Malware Config

Signatures

Suspicious use of FindShellTrayWindow 5 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
1188 Explorer.EXE
1188 Explorer.EXE
1188 Explorer.EXE
1188 Explorer.EXE
Executes dropped EXE 1 IoCs

Processes:

svchost32.exe

pid process

1912 svchost32.exe

pid	process
1188	Explorer.EXE
1188	Explorer.EXE
1188	Explorer.EXE
1188	Explorer.EXE
1188	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

svchost32.execmd.exe

pid	process
1912	svchost32.exe
1912	svchost32.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe
1804	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

svchost32.execmd.exe

description	pid	process	target process
PID 1912 set thread context of 1188	1912	svchost32.exe	Explorer.EXE
PID 1804 set thread context of 1188	1804	cmd.exe	Explorer.EXE

Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

844 EXCEL.EXE
844 EXCEL.EXE
844 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

svchost32.execmd.exe

description pid process

Token: SeDebugPrivilege 1912 svchost32.exe
Token: SeDebugPrivilege 1804 cmd.exe

pid	process
844	EXCEL.EXE
844	EXCEL.EXE
844	EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1912	svchost32.exe
Token: SeDebugPrivilege	1804	cmd.exe

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1804-7-0x0000000000000000-mapping.dmp	formbook

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

844 EXCEL.EXE

pid	process
844	EXCEL.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

EXCEL.EXEExplorer.EXEcmd.exe

description	pid	process	target process
PID 844 wrote to memory of 1912	844	EXCEL.EXE	svchost32.exe
PID 844 wrote to memory of 1912	844	EXCEL.EXE	svchost32.exe
PID 844 wrote to memory of 1912	844	EXCEL.EXE	svchost32.exe
PID 844 wrote to memory of 1912	844	EXCEL.EXE	svchost32.exe
PID 1188 wrote to memory of 1804	1188	Explorer.EXE	cmd.exe
PID 1188 wrote to memory of 1804	1188	Explorer.EXE	cmd.exe
PID 1188 wrote to memory of 1804	1188	Explorer.EXE	cmd.exe
PID 1188 wrote to memory of 1804	1188	Explorer.EXE	cmd.exe
PID 1804 wrote to memory of 1980	1804	cmd.exe	Firefox.exe
PID 1804 wrote to memory of 1980	1804	cmd.exe	Firefox.exe
PID 1804 wrote to memory of 1980	1804	cmd.exe	Firefox.exe
PID 1804 wrote to memory of 1980	1804	cmd.exe	Firefox.exe
PID 1804 wrote to memory of 1980	1804	cmd.exe	Firefox.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2090973689-680783404-4292415065-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Explorer.EXE

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Explorer.EXE
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Explorer.EXE

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	EXCEL.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

svchost32.execmd.exe

pid process

1912 svchost32.exe
1912 svchost32.exe
1912 svchost32.exe
1804 cmd.exe
1804 cmd.exe
1804 cmd.exe
1804 cmd.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
1188 Explorer.EXE
1188 Explorer.EXE
1188 Explorer.EXE

pid	process
1188	Explorer.EXE
1188	Explorer.EXE
1188	Explorer.EXE
1188	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- Checks whether UAC is enabled
- Suspicious use of SendNotifyMessage
PID:1188

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\bin 1.xls"
2⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Modifies system certificate store
PID:844

C:\Users\Public\svchost32.exe
"C:\Users\Public\svchost32.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
PID:1912

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- Modifies Internet Explorer settings
- Suspicious behavior: MapViewOfSection
PID:1804

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1980

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\419RB7D7\419logim.jpeg

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C:\Users\Admin\AppData\Roaming\419RB7D7\419logrf.ini

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C:\Users\Admin\AppData\Roaming\419RB7D7\419logri.ini

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C:\Users\Admin\AppData\Roaming\419RB7D7\419logrv.ini

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C:\Users\Public\svchost32.exe

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C:\Users\Public\svchost32.exe

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memory/1804-8-0x0000000049DA0000-0x0000000049DEC000-memory.dmp

Filesize
304KB

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memory/1804-11-0x00000000042C0000-0x000000000443A000-memory.dmp

Filesize
1.5MB

Download
memory/1804-10-0x00000000031B0000-0x0000000003289000-memory.dmp

Filesize
868KB

Download
memory/1804-7-0x0000000000000000-mapping.dmp

Download
memory/1912-5-0x0000000000000000-mapping.dmp

Download
memory/1980-12-0x0000000000000000-mapping.dmp

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memory/1980-13-0x000000013FFE0000-0x0000000140073000-memory.dmp

Filesize
588KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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