formbook | 8d9a34f51bcef521b4dad284038743c1cce9b9481d558225e33add85c4c9173b

General

Target

bin 1.xls
Size

183KB
MD5

ad085c2d0b11bd6268b5cf5e1f86c6d2
SHA1

20aa89a8d2cb83226065e4ecf97799409f9fd2ae
SHA256

8d9a34f51bcef521b4dad284038743c1cce9b9481d558225e33add85c4c9173b
SHA512

3ff47f33dc1fb6d9e9197c345153febe4388923ac7e27e87e3ea97d2bf7dde7dd62fcc02f2768fabd6ac4764bf48df0f0b6388719167b8b9ba1b350e16e44b12

Score

10^/10

rat trojan spyware stealer formbook

Malware Config

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
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

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

svchost32.exemsdt.exe

pid	process
3636	svchost32.exe
3636	svchost32.exe
3636	svchost32.exe
3636	svchost32.exe
3636	svchost32.exe
3636	svchost32.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe
2948	msdt.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

svchost32.exemsdt.exe

pid process

3636 svchost32.exe
3636 svchost32.exe
3636 svchost32.exe
3636 svchost32.exe
2948 msdt.exe
2948 msdt.exe
2948 msdt.exe
2948 msdt.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

svchost32.exemsdt.exe

description	pid	process	target process
PID 3636 set thread context of 3024	3636	svchost32.exe	Explorer.EXE
PID 3636 set thread context of 3024	3636	svchost32.exe	Explorer.EXE
PID 2948 set thread context of 3024	2948	msdt.exe	Explorer.EXE

Executes dropped EXE 1 IoCs

Processes:

svchost32.exe

pid process

3636 svchost32.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

svchost32.exemsdt.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3636	svchost32.exe
Token: SeDebugPrivilege	2948	msdt.exe
Token: SeShutdownPrivilege	3024	Explorer.EXE
Token: SeCreatePagefilePrivilege	3024	Explorer.EXE
Token: SeShutdownPrivilege	3024	Explorer.EXE
Token: SeCreatePagefilePrivilege	3024	Explorer.EXE
Token: SeShutdownPrivilege	3024	Explorer.EXE
Token: SeCreatePagefilePrivilege	3024	Explorer.EXE
Token: SeShutdownPrivilege	3024	Explorer.EXE
Token: SeCreatePagefilePrivilege	3024	Explorer.EXE
Token: SeShutdownPrivilege	3024	Explorer.EXE
Token: SeCreatePagefilePrivilege	3024	Explorer.EXE

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2948-10-0x0000000000000000-mapping.dmp	formbook

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1400429095-533421673-2598934218-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE
1928	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1928 EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXEExplorer.EXEmsdt.exe

description	pid	process	target process
PID 1928 wrote to memory of 3636	1928	EXCEL.EXE	svchost32.exe
PID 1928 wrote to memory of 3636	1928	EXCEL.EXE	svchost32.exe
PID 1928 wrote to memory of 3636	1928	EXCEL.EXE	svchost32.exe
PID 3024 wrote to memory of 2948	3024	Explorer.EXE	msdt.exe
PID 3024 wrote to memory of 2948	3024	Explorer.EXE	msdt.exe
PID 3024 wrote to memory of 2948	3024	Explorer.EXE	msdt.exe
PID 2948 wrote to memory of 3980	2948	msdt.exe	cmd.exe
PID 2948 wrote to memory of 3980	2948	msdt.exe	cmd.exe
PID 2948 wrote to memory of 3980	2948	msdt.exe	cmd.exe
PID 2948 wrote to memory of 1880	2948	msdt.exe	Firefox.exe
PID 2948 wrote to memory of 1880	2948	msdt.exe	Firefox.exe
PID 2948 wrote to memory of 1880	2948	msdt.exe	Firefox.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\bin 1.xls"
2⤵
- Checks processor information in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Enumerates system info in registry
PID:1928

C:\Users\Public\svchost32.exe
"C:\Users\Public\svchost32.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3636

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:2948

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3980

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1880

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

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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\419logrg.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/1880-22-0x00007FF6C4A30000-0x00007FF6C4AC3000-memory.dmp

Filesize
588KB

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memory/1880-21-0x00007FF6C4A30000-0x00007FF6C4AC3000-memory.dmp

Filesize
588KB

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memory/1880-20-0x00007FF6C4A30000-0x00007FF6C4AC3000-memory.dmp

Filesize
588KB

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memory/1880-19-0x0000000000000000-mapping.dmp

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memory/1928-5-0x000001B6A0B40000-0x000001B6A0B7E000-memory.dmp

Filesize
248KB

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memory/1928-0-0x000001B6A07B4000-0x000001B6A07B9000-memory.dmp

Filesize
20KB

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memory/1928-4-0x000001B6A0B40000-0x000001B6A0B7E000-memory.dmp

Filesize
248KB

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memory/1928-3-0x000001B6A0B40000-0x000001B6A0B7E000-memory.dmp

Filesize
248KB

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memory/1928-2-0x000001B6A0B40000-0x000001B6A0B7E000-memory.dmp

Filesize
248KB

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memory/1928-1-0x000001B6A0B40000-0x000001B6A0B7E000-memory.dmp

Filesize
248KB

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memory/2948-12-0x0000000000ED0000-0x0000000001043000-memory.dmp

Filesize
1.4MB

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memory/2948-16-0x00000000057E0000-0x000000000588A000-memory.dmp

Filesize
680KB

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memory/2948-11-0x0000000000ED0000-0x0000000001043000-memory.dmp

Filesize
1.4MB

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memory/2948-10-0x0000000000000000-mapping.dmp

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memory/3024-17-0x0000000006D40000-0x0000000006E5E000-memory.dmp

Filesize
1.1MB

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memory/3636-6-0x0000000000000000-mapping.dmp

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memory/3980-14-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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