formbook | 3519fe69cbcf16296c897fae7afe09ce22b9d3b8ebfaf2be8d958d985c9104f8

General

Target

Shipping Doc_Posen 2011S.xlsx
Size

1.9MB
MD5

6251595d49a8e13fd50acdee711a4907
SHA1

3858854ea990b7b7093a11d817a71e78153f42c1
SHA256

3519fe69cbcf16296c897fae7afe09ce22b9d3b8ebfaf2be8d958d985c9104f8
SHA512

4074c4decfe9790dc3605e183e2dd536446ec0404194dd1df53dbccb3de9f5b0db55df603713b5e94d51c60c64091e9cda576c84496d783723663b3691f3d689

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.waverunner-fan.com/pp2/

Decoy

meredithridenhour.com

foundationsseniormanagement.com

sallyta.com

msmonlinellc.com

entreprisesfr.com

neadclunlounge.com

lexuscarbonfiber.com

electroglas-probers.com

investedgefinancialinc.com

blm.healthcare

workoutmagazinemx.com

edmondsagent.com

rodrigzart.com

standardstripcurtains.com

carrier.email

hifan.info

fhcqtravel.com

legacycream.com

topfurnity.com

solids-development.net

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/1624-15-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1624-16-0x000000000041EBE0-mapping.dmp	formbook
behavioral1/memory/1268-18-0x0000000000000000-mapping.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1672 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

844 vbc.exe
1624 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1672	EQNEDT32.EXE

pid	process
844	vbc.exe
1624	vbc.exe

pid	process
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeNAPSTAT.EXE

description	pid	process	target process
PID 844 set thread context of 1624	844	vbc.exe	vbc.exe
PID 1624 set thread context of 1204	1624	vbc.exe	Explorer.EXE
PID 1268 set thread context of 1204	1268	NAPSTAT.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

1672 EQNEDT32.EXE

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

pid	process
1672	EQNEDT32.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\Toolbar	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 (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\Toolbar\ShowDiscussionButton = "Yes"	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 (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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1680 EXCEL.EXE

pid	process
1680	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid	process
1624	vbc.exe
1624	vbc.exe
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE
1268	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid process

1624 vbc.exe
1624 vbc.exe
1624 vbc.exe
1268 NAPSTAT.EXE
1268 NAPSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeNAPSTAT.EXE

description pid process

Token: SeDebugPrivilege 1624 vbc.exe
Token: SeDebugPrivilege 1268 NAPSTAT.EXE
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1680 EXCEL.EXE
1680 EXCEL.EXE
1680 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1624	vbc.exe
Token: SeDebugPrivilege	1268	NAPSTAT.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1680	EXCEL.EXE
1680	EXCEL.EXE
1680	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1672 wrote to memory of 844	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 844	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 844	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 844	1672	EQNEDT32.EXE	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 844 wrote to memory of 1624	844	vbc.exe	vbc.exe
PID 1204 wrote to memory of 1268	1204	Explorer.EXE	NAPSTAT.EXE
PID 1204 wrote to memory of 1268	1204	Explorer.EXE	NAPSTAT.EXE
PID 1204 wrote to memory of 1268	1204	Explorer.EXE	NAPSTAT.EXE
PID 1204 wrote to memory of 1268	1204	Explorer.EXE	NAPSTAT.EXE
PID 1268 wrote to memory of 1320	1268	NAPSTAT.EXE	cmd.exe
PID 1268 wrote to memory of 1320	1268	NAPSTAT.EXE	cmd.exe
PID 1268 wrote to memory of 1320	1268	NAPSTAT.EXE	cmd.exe
PID 1268 wrote to memory of 1320	1268	NAPSTAT.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:1204

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\Shipping Doc_Posen 2011S.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1680

C:\Windows\SysWOW64\NAPSTAT.EXE
"C:\Windows\SysWOW64\NAPSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1268

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1320

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:1672

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:844

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:1624

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

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Downloads

C:\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
C:\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
C:\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
\Users\Public\vbc.exe
MD5
ab830be5e48f1db0f4ebf3a106473a32

SHA1
3a376a9ad849b778b4ef2235616068f221b2e61e

SHA256
814c8a7ae9ec48b7a455cdf15b8c520fc9d7695e24f31afd5ff72cbc25e08704

SHA512
45f5423da5942a549eabfa948c01adadcc2b8cd2d1971936b23d5d230af26986b7fb6e833d68f54ea967f902fec4eacb7a7e6efa37961910c62333ca6ffa17c6

Download Submit
memory/268-2-0x000007FEF81B0000-0x000007FEF842A000-memory.dmp

Filesize
2.5MB

Download
memory/844-10-0x000000006C3E0000-0x000000006CACE000-memory.dmp

Filesize
6.9MB

Download
memory/844-11-0x0000000001200000-0x0000000001201000-memory.dmp

Filesize
4KB

Download
memory/844-13-0x0000000000540000-0x000000000054E000-memory.dmp

Filesize
56KB

Download
memory/844-14-0x0000000005720000-0x00000000057B5000-memory.dmp

Filesize
596KB

Download
memory/844-7-0x0000000000000000-mapping.dmp

Download
memory/1268-18-0x0000000000000000-mapping.dmp

Download
memory/1268-19-0x00000000002E0000-0x0000000000326000-memory.dmp

Filesize
280KB

Download
memory/1268-21-0x0000000002F60000-0x0000000003048000-memory.dmp

Filesize
928KB

Download
memory/1320-20-0x0000000000000000-mapping.dmp

Download
memory/1624-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1624-16-0x000000000041EBE0-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads