formbook | 50a0ad7b25ca559bc2d753a6b5c7bcdc91d362977f3169f9d344ceef9e7c1cf8

General

Target

Biomed quotation.xlsx
Size

461KB
MD5

cede2983cf919e588ecdaaa897ee843f
SHA1

4a17802328d5df28a50aa70dded5450ff9fe0107
SHA256

50a0ad7b25ca559bc2d753a6b5c7bcdc91d362977f3169f9d344ceef9e7c1cf8
SHA512

861701a236cd9d6f39351bc65f343b262966fbce5b9363cb9ae5bde8673aeb58396f1c08ac4c9fd32728cc1453064c4eaa7b1bb3e957896e6cc213fa1650b422

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.kelurahanpatikidul.xyz/op9s/

Decoy

playsystems-j.one

exchange.digital

usaleadsretrieval.com

mervegulistanaydin.com

heavythreadclothing.com

attorneyperu.com

lamuerteesdulce.com

catxirulo.com

willowrunconnemaras.com

laospecial.com

anchotrading.com

mycreditebook.com

jiujiu.plus

juniperconsulting.site

millionairsmindset.com

coronaviruscuredrugs.com

services-office.com

escanaim.com

20svip.com

pistonpounder.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/1644-79-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1644-80-0x000000000041ED70-mapping.dmp	formbook
behavioral1/memory/1908-91-0x00000000000D0000-0x00000000000FE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1216 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

588 vbc.exe
292 vbc.exe
1644 vbc.exe
Loads dropped DLL 1 IoCs

Processes:

EQNEDT32.EXE

pid process

1216 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1216	EQNEDT32.EXE

pid	process
588	vbc.exe
292	vbc.exe
1644	vbc.exe

pid	process
1216	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.execontrol.exe

description	pid	process	target process
PID 588 set thread context of 1644	588	vbc.exe	vbc.exe
PID 1644 set thread context of 1240	1644	vbc.exe	Explorer.EXE
PID 1644 set thread context of 1240	1644	vbc.exe	Explorer.EXE
PID 1908 set thread context of 1240	1908	control.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1512 schtasks.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

1216 EQNEDT32.EXE

pid	process
1512	schtasks.exe

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

pid	process
1216	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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.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"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.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"	EXCEL.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"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

vbc.exevbc.execontrol.exe

pid process

588 vbc.exe
588 vbc.exe
588 vbc.exe
588 vbc.exe
1644 vbc.exe
1644 vbc.exe
1644 vbc.exe
1908 control.exe
1908 control.exe
1908 control.exe
1908 control.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.execontrol.exe

pid process

1644 vbc.exe
1644 vbc.exe
1644 vbc.exe
1644 vbc.exe
1908 control.exe
1908 control.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.execontrol.exe

description pid process

Token: SeDebugPrivilege 588 vbc.exe
Token: SeDebugPrivilege 1644 vbc.exe
Token: SeDebugPrivilege 1908 control.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
1108 EXCEL.EXE
1108 EXCEL.EXE

pid	process
1108	EXCEL.EXE

pid	process
588	vbc.exe
588	vbc.exe
588	vbc.exe
588	vbc.exe
1644	vbc.exe
1644	vbc.exe
1644	vbc.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe

pid	process
1240	Explorer.EXE

pid	process
1644	vbc.exe
1644	vbc.exe
1644	vbc.exe
1644	vbc.exe
1908	control.exe
1908	control.exe

description	pid	process
Token: SeDebugPrivilege	588	vbc.exe
Token: SeDebugPrivilege	1644	vbc.exe
Token: SeDebugPrivilege	1908	control.exe

pid	process
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1216 wrote to memory of 588	1216	EQNEDT32.EXE	vbc.exe
PID 1216 wrote to memory of 588	1216	EQNEDT32.EXE	vbc.exe
PID 1216 wrote to memory of 588	1216	EQNEDT32.EXE	vbc.exe
PID 1216 wrote to memory of 588	1216	EQNEDT32.EXE	vbc.exe
PID 588 wrote to memory of 1512	588	vbc.exe	schtasks.exe
PID 588 wrote to memory of 1512	588	vbc.exe	schtasks.exe
PID 588 wrote to memory of 1512	588	vbc.exe	schtasks.exe
PID 588 wrote to memory of 1512	588	vbc.exe	schtasks.exe
PID 588 wrote to memory of 292	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 292	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 292	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 292	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 588 wrote to memory of 1644	588	vbc.exe	vbc.exe
PID 1240 wrote to memory of 1908	1240	Explorer.EXE	control.exe
PID 1240 wrote to memory of 1908	1240	Explorer.EXE	control.exe
PID 1240 wrote to memory of 1908	1240	Explorer.EXE	control.exe
PID 1240 wrote to memory of 1908	1240	Explorer.EXE	control.exe
PID 1908 wrote to memory of 1496	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1496	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1496	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1496	1908	control.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1240

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\Biomed quotation.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1108

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1496

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:1216

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:588

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TBJPnHZv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD72.tmp"
3⤵
- Creates scheduled task(s)
PID:1512

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:292

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:1644

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Exploitation for Client Execution

1

T1203

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFD72.tmp
MD5
b01c4334054d94b23fdb51817d057763

SHA1
0e3caa92c4e146bf09c7945d2d2581082921f87f

SHA256
bfd9993acf04591c3e4a03cc57e6e26e4b22d0df17505e1cd758e5f36f1d6e8a

SHA512
b4a4cdfe57d39935d7eefb9c5d00433be3d01682fa04811db9112293557c6bb9213c80d9ccc594a043b2fa54c9bdcc84a47263d8c38afe4cf89ea08750fff957

Download Submit
C:\Users\Public\vbc.exe
MD5
0162655d37168ffb03c4afafad5ef674

SHA1
185b7ee31ac87e4d1de151ca40e9af25b7c5bae0

SHA256
9fadae8c6a192536c41677546bc32e530d38084906e8be610573538f0955c49d

SHA512
0daef250eea1bfcc0b95d9f828b9bf8b428d801dcbf120b98e60e0b9f95c841bd1597453abf601722a8c11b5fc0f29cbe193727e1c920c1cd389f8f6471c993b

Download Submit
C:\Users\Public\vbc.exe
MD5
0162655d37168ffb03c4afafad5ef674

SHA1
185b7ee31ac87e4d1de151ca40e9af25b7c5bae0

SHA256
9fadae8c6a192536c41677546bc32e530d38084906e8be610573538f0955c49d

SHA512
0daef250eea1bfcc0b95d9f828b9bf8b428d801dcbf120b98e60e0b9f95c841bd1597453abf601722a8c11b5fc0f29cbe193727e1c920c1cd389f8f6471c993b

Download Submit
C:\Users\Public\vbc.exe
MD5
0162655d37168ffb03c4afafad5ef674

SHA1
185b7ee31ac87e4d1de151ca40e9af25b7c5bae0

SHA256
9fadae8c6a192536c41677546bc32e530d38084906e8be610573538f0955c49d

SHA512
0daef250eea1bfcc0b95d9f828b9bf8b428d801dcbf120b98e60e0b9f95c841bd1597453abf601722a8c11b5fc0f29cbe193727e1c920c1cd389f8f6471c993b

Download Submit
C:\Users\Public\vbc.exe
MD5
0162655d37168ffb03c4afafad5ef674

SHA1
185b7ee31ac87e4d1de151ca40e9af25b7c5bae0

SHA256
9fadae8c6a192536c41677546bc32e530d38084906e8be610573538f0955c49d

SHA512
0daef250eea1bfcc0b95d9f828b9bf8b428d801dcbf120b98e60e0b9f95c841bd1597453abf601722a8c11b5fc0f29cbe193727e1c920c1cd389f8f6471c993b

Download Submit
\Users\Public\vbc.exe
MD5
0162655d37168ffb03c4afafad5ef674

SHA1
185b7ee31ac87e4d1de151ca40e9af25b7c5bae0

SHA256
9fadae8c6a192536c41677546bc32e530d38084906e8be610573538f0955c49d

SHA512
0daef250eea1bfcc0b95d9f828b9bf8b428d801dcbf120b98e60e0b9f95c841bd1597453abf601722a8c11b5fc0f29cbe193727e1c920c1cd389f8f6471c993b

Download Submit
memory/588-68-0x0000000001370000-0x0000000001371000-memory.dmp

Filesize
4KB

Download
memory/588-70-0x0000000004D10000-0x0000000004D11000-memory.dmp

Filesize
4KB

Download
memory/588-71-0x0000000000440000-0x0000000000449000-memory.dmp

Filesize
36KB

Download
memory/588-72-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/588-74-0x0000000004E90000-0x0000000004F05000-memory.dmp

Filesize
468KB

Download
memory/588-75-0x0000000000A70000-0x0000000000AA3000-memory.dmp

Filesize
204KB

Download
memory/588-65-0x0000000000000000-mapping.dmp

Download
memory/1108-61-0x0000000071D01000-0x0000000071D03000-memory.dmp

Filesize
8KB

Download
memory/1108-60-0x000000002FFF1000-0x000000002FFF4000-memory.dmp

Filesize
12KB

Download
memory/1108-73-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1108-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1216-63-0x0000000076E11000-0x0000000076E13000-memory.dmp

Filesize
8KB

Download
memory/1240-87-0x00000000067B0000-0x00000000068B5000-memory.dmp

Filesize
1.0MB

Download
memory/1240-85-0x00000000063E0000-0x0000000006533000-memory.dmp

Filesize
1.3MB

Download
memory/1240-95-0x0000000006970000-0x0000000006ACF000-memory.dmp

Filesize
1.4MB

Download
memory/1496-92-0x0000000000000000-mapping.dmp

Download
memory/1512-76-0x0000000000000000-mapping.dmp

Download
memory/1644-83-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/1644-86-0x0000000000350000-0x0000000000364000-memory.dmp

Filesize
80KB

Download
memory/1644-80-0x000000000041ED70-mapping.dmp

Download
memory/1644-84-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1644-79-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1908-88-0x0000000000000000-mapping.dmp

Download
memory/1908-90-0x00000000008A0000-0x00000000008BF000-memory.dmp

Filesize
124KB

Download
memory/1908-91-0x00000000000D0000-0x00000000000FE000-memory.dmp

Filesize
184KB

Download
memory/1908-93-0x0000000001FE0000-0x00000000022E3000-memory.dmp

Filesize
3.0MB

Download
memory/1908-94-0x0000000001E50000-0x0000000001EE3000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads