formbook | 2bb1e6d0bcc6af940f0835a269b1ad99f8420207ba2f87c6f789219f8186559f

General

Target

Reliance Trading Pvt. Ltd. List.docx
Size

10KB
MD5

8312b5bab2f19b01e2a1a12744a7464e
SHA1

076df8e460f965cd7b30fb07cdd06e90654417ec
SHA256

2bb1e6d0bcc6af940f0835a269b1ad99f8420207ba2f87c6f789219f8186559f
SHA512

5236b8461c9bb6af273c85f26905552a06977a1d58f2ff104f416bae996d3838b4ca76b037716aeb39936de0c79854e88c58cca5c17362e9836ccd097879e5f1

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.mpaiji.com/c244/

Decoy

ssgasija.com

procyoon.com

mood-street-food.com

yeglifeview.com

baoyai.com

sundarsheni.com

notoli.photography

sweetape.com

ergas.group

asyrill.com

jin188v.com

stlazarushospitalnola.com

dohertyfamily5.com

duniaclubs.club

ngobryles.com

scottsavocasalon.com

unifiui.com

baileyfred.com

nabiagency.com

alyssaternanphotography.com

Signatures

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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1840-73-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1840-74-0x000000000041EB20-mapping.dmp	formbook
behavioral1/memory/972-76-0x0000000000220000-0x000000000024F000-memory.dmp	formbook
behavioral1/memory/960-85-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

8 1288 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

972 vbc.exe
1840 vbc.exe

flow	pid	process
8	1288	EQNEDT32.EXE

pid	process
972	vbc.exe
1840	vbc.exe

Abuses OpenXML format to download file from external location 2 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key opened	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Office\Common\Offline\Files\http://198.12.91.160/--...........................................------..................--------/......................wiz	WINWORD.EXE

Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1288 EQNEDT32.EXE
1288 EQNEDT32.EXE
1288 EQNEDT32.EXE
1288 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1288	EQNEDT32.EXE
1288	EQNEDT32.EXE
1288	EQNEDT32.EXE
1288	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeraserver.exe

description	pid	process	target process
PID 972 set thread context of 1840	972	vbc.exe	vbc.exe
PID 1840 set thread context of 1212	1840	vbc.exe	Explorer.EXE
PID 960 set thread context of 1212	960	raserver.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
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

1288 EQNEDT32.EXE

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

pid	process
1288	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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1120 WINWORD.EXE

pid	process
1120	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

vbc.exeraserver.exe

pid	process
1840	vbc.exe
1840	vbc.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe
960	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeraserver.exe

pid process

1840 vbc.exe
1840 vbc.exe
1840 vbc.exe
960 raserver.exe
960 raserver.exe

pid	process
1212	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

vbc.exeExplorer.EXEraserver.exeWINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	1840	vbc.exe
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeDebugPrivilege	960	raserver.exe
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeShutdownPrivilege	1120	WINWORD.EXE
Token: SeShutdownPrivilege	1212	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1120 WINWORD.EXE
1120 WINWORD.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1120	WINWORD.EXE
1120	WINWORD.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEvbc.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 1288 wrote to memory of 972	1288	EQNEDT32.EXE	vbc.exe
PID 1288 wrote to memory of 972	1288	EQNEDT32.EXE	vbc.exe
PID 1288 wrote to memory of 972	1288	EQNEDT32.EXE	vbc.exe
PID 1288 wrote to memory of 972	1288	EQNEDT32.EXE	vbc.exe
PID 1120 wrote to memory of 1080	1120	WINWORD.EXE	splwow64.exe
PID 1120 wrote to memory of 1080	1120	WINWORD.EXE	splwow64.exe
PID 1120 wrote to memory of 1080	1120	WINWORD.EXE	splwow64.exe
PID 1120 wrote to memory of 1080	1120	WINWORD.EXE	splwow64.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 972 wrote to memory of 1840	972	vbc.exe	vbc.exe
PID 1212 wrote to memory of 960	1212	Explorer.EXE	raserver.exe
PID 1212 wrote to memory of 960	1212	Explorer.EXE	raserver.exe
PID 1212 wrote to memory of 960	1212	Explorer.EXE	raserver.exe
PID 1212 wrote to memory of 960	1212	Explorer.EXE	raserver.exe
PID 960 wrote to memory of 1576	960	raserver.exe	cmd.exe
PID 960 wrote to memory of 1576	960	raserver.exe	cmd.exe
PID 960 wrote to memory of 1576	960	raserver.exe	cmd.exe
PID 960 wrote to memory of 1576	960	raserver.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212

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\Reliance Trading Pvt. Ltd. List.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:1120

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1080

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1576

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:1288

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:972

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:1840

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
C:\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
C:\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
\Users\Public\vbc.exe
MD5
f17e854a03ef48b2b2581e329b233510

SHA1
16a8526ccfa4f87fcd51706406cc31f56af11572

SHA256
a39bf71ad924d013133a402cea33e33c57a0fd202dcee7f411a4149535f7e969

SHA512
b4adadf98104ea8ccdadca57b83836618a591b93fbd71f29e96ccf04f9af04d2e8ebfa585b661f9df75435ed708825ddb5c8d29226f1bdfe931e9442583aa888

Download Submit
memory/960-86-0x0000000001ED0000-0x00000000021D3000-memory.dmp

Filesize
3.0MB

Download
memory/960-85-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/960-81-0x0000000000000000-mapping.dmp

Download
memory/960-84-0x00000000003E0000-0x00000000003FC000-memory.dmp

Filesize
112KB

Download
memory/960-87-0x0000000000920000-0x00000000009B3000-memory.dmp

Filesize
588KB

Download
memory/972-76-0x0000000000220000-0x000000000024F000-memory.dmp

Filesize
188KB

Download
memory/972-68-0x0000000000000000-mapping.dmp

Download
memory/1080-71-0x000007FEFB681000-0x000007FEFB683000-memory.dmp

Filesize
8KB

Download
memory/1080-70-0x0000000000000000-mapping.dmp

Download
memory/1120-89-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1120-61-0x000000006FC01000-0x000000006FC03000-memory.dmp

Filesize
8KB

Download
memory/1120-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1120-60-0x0000000072181000-0x0000000072184000-memory.dmp

Filesize
12KB

Download
memory/1212-88-0x0000000006E90000-0x0000000007007000-memory.dmp

Filesize
1.5MB

Download
memory/1212-80-0x0000000004500000-0x00000000045CA000-memory.dmp

Filesize
808KB

Download
memory/1288-63-0x0000000074D91000-0x0000000074D93000-memory.dmp

Filesize
8KB

Download
memory/1576-83-0x0000000000000000-mapping.dmp

Download
memory/1840-79-0x0000000000530000-0x0000000000544000-memory.dmp

Filesize
80KB

Download
memory/1840-78-0x00000000006E0000-0x00000000009E3000-memory.dmp

Filesize
3.0MB

Download
memory/1840-74-0x000000000041EB20-mapping.dmp

Download
memory/1840-73-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads