formbook | 9c9c3a88a1aed30e34abbae91f84f82d1777bcf303f8dabbbdc8330d2090febc

General

Target

Order Specification.docx
Size

10KB
MD5

67c8ecd6af15b24d8ada9142aa3bec6e
SHA1

f55c87f0da307e1049847b1f3cbfe90b541db063
SHA256

9c9c3a88a1aed30e34abbae91f84f82d1777bcf303f8dabbbdc8330d2090febc
SHA512

65efcd5e42ac1ad9e862666c1e12c6c111cf38e046944f34095b9d33922ac6a35e1fc4269d473b4f52c583d05377b9b0c94ecf7dcdea2bd4682880c30154a6ab

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.dragonpalcenk.com/k8n/

Decoy

foxynailserie.com

thenoyzees.com

waterrising.xyz

allmister.com

theguyscave.com

erkitap.com

spyder-club.com

raskrutisam.com

giantledlights.com

wowbeautynails.com

youmovies.site

abjms.com

enso-solutions.com

seasonalcampgroundsmn.com

lukeprater.com

mufasacapital.com

idi360.com

mask-cleaner.com

aeruswilmde.com

venkatlifecoach.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/1576-82-0x000000000041EB40-mapping.dmp	formbook
behavioral1/memory/1576-81-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/944-91-0x0000000000110000-0x000000000013E000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

8 672 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

764 vbc.exe
1800 vbc.exe
1576 vbc.exe

flow	pid	process
8	672	EQNEDT32.EXE

pid	process
764	vbc.exe
1800	vbc.exe
1576	vbc.exe

Abuses OpenXML format to download file from external location 2 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key opened	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Office\Common\Offline\Files\http://0300.0003.0215.0244/ore/o.wbk	WINWORD.EXE

Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

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

Scripting
T1064

pid	process
672	EQNEDT32.EXE
672	EQNEDT32.EXE
672	EQNEDT32.EXE
672	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exechkdsk.exe

description	pid	process	target process
PID 764 set thread context of 1576	764	vbc.exe	vbc.exe
PID 1576 set thread context of 1208	1576	vbc.exe	Explorer.EXE
PID 944 set thread context of 1208	944	chkdsk.exe	Explorer.EXE

Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.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

672 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

pid	process
672	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1688 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

vbc.exevbc.exechkdsk.exe

pid process

764 vbc.exe
764 vbc.exe
764 vbc.exe
1576 vbc.exe
1576 vbc.exe
944 chkdsk.exe
944 chkdsk.exe
944 chkdsk.exe
944 chkdsk.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exechkdsk.exe

pid process

1576 vbc.exe
1576 vbc.exe
1576 vbc.exe
944 chkdsk.exe
944 chkdsk.exe

pid	process
1688	WINWORD.EXE

pid	process
764	vbc.exe
764	vbc.exe
764	vbc.exe
1576	vbc.exe
1576	vbc.exe
944	chkdsk.exe
944	chkdsk.exe
944	chkdsk.exe
944	chkdsk.exe

pid	process
1208	Explorer.EXE

pid	process
1576	vbc.exe
1576	vbc.exe
1576	vbc.exe
944	chkdsk.exe
944	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

WINWORD.EXEvbc.exevbc.exechkdsk.exe

description	pid	process
Token: SeShutdownPrivilege	1688	WINWORD.EXE
Token: SeDebugPrivilege	764	vbc.exe
Token: SeDebugPrivilege	1576	vbc.exe
Token: SeDebugPrivilege	944	chkdsk.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1688 WINWORD.EXE
1688 WINWORD.EXE

pid	process
1688	WINWORD.EXE
1688	WINWORD.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEvbc.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 672 wrote to memory of 764	672	EQNEDT32.EXE	vbc.exe
PID 672 wrote to memory of 764	672	EQNEDT32.EXE	vbc.exe
PID 672 wrote to memory of 764	672	EQNEDT32.EXE	vbc.exe
PID 672 wrote to memory of 764	672	EQNEDT32.EXE	vbc.exe
PID 1688 wrote to memory of 608	1688	WINWORD.EXE	splwow64.exe
PID 1688 wrote to memory of 608	1688	WINWORD.EXE	splwow64.exe
PID 1688 wrote to memory of 608	1688	WINWORD.EXE	splwow64.exe
PID 1688 wrote to memory of 608	1688	WINWORD.EXE	splwow64.exe
PID 764 wrote to memory of 1800	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1800	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1800	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1800	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1576	764	vbc.exe	vbc.exe
PID 1208 wrote to memory of 944	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 944	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 944	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 944	1208	Explorer.EXE	chkdsk.exe
PID 944 wrote to memory of 1840	944	chkdsk.exe	cmd.exe
PID 944 wrote to memory of 1840	944	chkdsk.exe	cmd.exe
PID 944 wrote to memory of 1840	944	chkdsk.exe	cmd.exe
PID 944 wrote to memory of 1840	944	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1208

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Order Specification.docx"
2⤵
- Abuses OpenXML format to download file from external location
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:608

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1840

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:672

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:764

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:1800

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1576

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
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
C:\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
C:\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
C:\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
\Users\Public\vbc.exe
MD5
a16db782cfe5e230ebf096ca3ff78037

SHA1
b834e7da1d4c98e7de86798b2e95cee538a9828e

SHA256
94827e12d128626a8d64286432a73293f76cb45c1f523ff0ad7e67b90802a123

SHA512
90bf5b4bcb063534b0fc2f894b7ac14d08b31ba8b9eeabc5f7ab1d96e0b5ee5559ace2a67a0aefa0cddc8b087beb68418f12acbfd7680872754d4d8d114267bd

Download Submit
memory/608-73-0x0000000000000000-mapping.dmp

Download
memory/608-74-0x000007FEFBB51000-0x000007FEFBB53000-memory.dmp

Filesize
8KB

Download
memory/672-63-0x0000000075011000-0x0000000075013000-memory.dmp

Filesize
8KB

Download
memory/764-75-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/764-71-0x0000000000CA0000-0x0000000000CA1000-memory.dmp

Filesize
4KB

Download
memory/764-68-0x0000000000000000-mapping.dmp

Download
memory/764-76-0x0000000000B20000-0x0000000000B3B000-memory.dmp

Filesize
108KB

Download
memory/764-78-0x00000000051D0000-0x0000000005250000-memory.dmp

Filesize
512KB

Download
memory/764-79-0x0000000000C20000-0x0000000000C59000-memory.dmp

Filesize
228KB

Download
memory/944-92-0x0000000001F80000-0x0000000002283000-memory.dmp

Filesize
3.0MB

Download
memory/944-91-0x0000000000110000-0x000000000013E000-memory.dmp

Filesize
184KB

Download
memory/944-93-0x0000000002290000-0x0000000002323000-memory.dmp

Filesize
588KB

Download
memory/944-90-0x0000000000480000-0x0000000000487000-memory.dmp

Filesize
28KB

Download
memory/944-88-0x0000000000000000-mapping.dmp

Download
memory/1208-87-0x0000000007770000-0x0000000007911000-memory.dmp

Filesize
1.6MB

Download
memory/1208-94-0x0000000004F00000-0x0000000004FD9000-memory.dmp

Filesize
868KB

Download
memory/1576-86-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1576-85-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download
memory/1576-81-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1576-82-0x000000000041EB40-mapping.dmp

Download
memory/1688-60-0x0000000072661000-0x0000000072664000-memory.dmp

Filesize
12KB

Download
memory/1688-77-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1688-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1688-61-0x00000000700E1000-0x00000000700E3000-memory.dmp

Filesize
8KB

Download
memory/1840-89-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads