formbook | 69f600cd0a147b4209768992bf6c707d7ff197a6952e373cca08a9cc8bff1fd6

General

Target

inquiry10204168.xlsx
Size

1.2MB
MD5

07f99c2135effb00a334fdd978259cb3
SHA1

32bbe469f0222276b5d0a6947ba6f137221e8617
SHA256

69f600cd0a147b4209768992bf6c707d7ff197a6952e373cca08a9cc8bff1fd6
SHA512

77aabef86541d9be0e87094badf37b8f4e0342a8cfd39d7f3f865d81e0a97a8563b8c36dca18c6c0b619c36c93484ea673a0cf5153013e86bd906a74889ef918

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.theatomicshots.com/xle/

Decoy

tknbr.com

loyaloneconstruction.com

what-where.com

matebacapital.com

marriedandmore.com

qiemfsolutions.com

graececonsulting.com

www7456.com

littlefreecherokeelibrary.com

tailgatepawkinglot.com

musheet.com

tesfamariamtb.com

1728025.com

xceltechuae.com

harperandchloe.com

thepamperedbarber.com

5050alberta.com

supplychainstrainer.com

lacorte.group

ringingbear.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1328-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1328-17-0x000000000041EB90-mapping.dmp	formbook
behavioral1/memory/1708-20-0x0000000000000000-mapping.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1964 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

924 vbc.exe
1608 vbc.exe
1328 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1964 EQNEDT32.EXE
1964 EQNEDT32.EXE
1964 EQNEDT32.EXE
1964 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1964	EQNEDT32.EXE

pid	process
1964	EQNEDT32.EXE
1964	EQNEDT32.EXE
1964	EQNEDT32.EXE
1964	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exerundll32.exe

description	pid	process	target process
PID 924 set thread context of 1328	924	vbc.exe	vbc.exe
PID 1328 set thread context of 1252	1328	vbc.exe	Explorer.EXE
PID 1328 set thread context of 1252	1328	vbc.exe	Explorer.EXE
PID 1708 set thread context of 1252	1708	rundll32.exe	Explorer.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
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1964 EQNEDT32.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1964	EQNEDT32.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	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
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	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\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	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 (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

1068 EXCEL.EXE

pid	process
1068	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

vbc.exevbc.exerundll32.exe

pid	process
924	vbc.exe
924	vbc.exe
1328	vbc.exe
1328	vbc.exe
1328	vbc.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe
1708	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exerundll32.exe

pid process

1328 vbc.exe
1328 vbc.exe
1328 vbc.exe
1328 vbc.exe
1708 rundll32.exe
1708 rundll32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exerundll32.exe

description pid process

Token: SeDebugPrivilege 924 vbc.exe
Token: SeDebugPrivilege 1328 vbc.exe
Token: SeDebugPrivilege 1708 rundll32.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1068 EXCEL.EXE
1068 EXCEL.EXE
1068 EXCEL.EXE

pid	process
1328	vbc.exe
1328	vbc.exe
1328	vbc.exe
1328	vbc.exe
1708	rundll32.exe
1708	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	924	vbc.exe
Token: SeDebugPrivilege	1328	vbc.exe
Token: SeDebugPrivilege	1708	rundll32.exe

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

pid	process
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1964 wrote to memory of 924	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 924	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 924	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 924	1964	EQNEDT32.EXE	vbc.exe
PID 924 wrote to memory of 1608	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1608	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1608	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1608	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 924 wrote to memory of 1328	924	vbc.exe	vbc.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1252 wrote to memory of 1708	1252	Explorer.EXE	rundll32.exe
PID 1708 wrote to memory of 1960	1708	rundll32.exe	cmd.exe
PID 1708 wrote to memory of 1960	1708	rundll32.exe	cmd.exe
PID 1708 wrote to memory of 1960	1708	rundll32.exe	cmd.exe
PID 1708 wrote to memory of 1960	1708	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1252

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\inquiry10204168.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1068

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1960

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1964

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:924

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1608

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
C:\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
C:\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
C:\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
\Users\Public\vbc.exe
MD5
7c9927846eab4ba57f762766ee567d50

SHA1
81351809ef5a15a84255eda23d4bdec25eafcf65

SHA256
3ae1c8125ddc0d024ac1f14b9ba78e44f10bfc281ca7e9c68cec7db8af6ee9b3

SHA512
77dbfa9a999a88e886107abf62f281535bd1da993f2a5ea72254d7feab9586a0d056ea4d7b218d17421cab0c1d10119ced520e643b080d7dd3a7e26b30e2d1f4

Download Submit
memory/924-7-0x0000000000000000-mapping.dmp

Download
memory/924-11-0x0000000000E80000-0x0000000000E81000-memory.dmp

Filesize
4KB

Download
memory/924-13-0x0000000000460000-0x000000000046E000-memory.dmp

Filesize
56KB

Download
memory/924-14-0x0000000000310000-0x000000000038F000-memory.dmp

Filesize
508KB

Download
memory/924-10-0x000000006C370000-0x000000006CA5E000-memory.dmp

Filesize
6.9MB

Download
memory/1204-2-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp

Filesize
2.5MB

Download
memory/1252-19-0x0000000006A40000-0x0000000006B6D000-memory.dmp

Filesize
1.2MB

Download
memory/1328-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1328-17-0x000000000041EB90-mapping.dmp

Download
memory/1708-20-0x0000000000000000-mapping.dmp

Download
memory/1708-21-0x00000000007A0000-0x00000000007AE000-memory.dmp

Filesize
56KB

Download
memory/1708-23-0x0000000001FB0000-0x000000000208D000-memory.dmp

Filesize
884KB

Download
memory/1960-22-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads