formbook | eae9c79d7cd3969dd5b6d3abeed9bd8499447998af00d48e47fed03f8172b2d9

General

Target

notice of arrival.xlsx
Size

2.0MB
MD5

c732ea10caaebd818b01585c0b1c8b98
SHA1

4c8aa235401a1d6d6d42f63c23834a059fd6780c
SHA256

eae9c79d7cd3969dd5b6d3abeed9bd8499447998af00d48e47fed03f8172b2d9
SHA512

0f5bba12f9b60d927847e98c29a52041d738ddf11a852dbd054a9ea0081bd5517207818404700ac09cca20771caade5215f563559efd6eb8a1008b1087376eba

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.inreachpt.com/gqx2/

Decoy

calusaptamiami.com

starlinkwebservices.com

lakeviewbarbershonola.com

oaklandraidersjerseyspop.com

ohiotechreport.com

eligetucafetera.com

tu4343.com

abstract-elearning.com

thebabylashes.com

athleteshive.com

fanninhomesforless.com

sembracna.com

servicesyn.com

bellairechoice.com

tmpaas.com

eyepaa.com

stickerzblvd.com

rentfs.com

nadya-shanab.com

microwgreens.net

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1028-20-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1028-21-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/1660-30-0x00000000001C0000-0x00000000001E9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1964 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1748 vbc.exe
1028 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
1748	vbc.exe
1028	vbc.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmd.exe

description	pid	process	target process
PID 1748 set thread context of 1028	1748	vbc.exe	vbc.exe
PID 1028 set thread context of 1212	1028	vbc.exe	Explorer.EXE
PID 1660 set thread context of 1212	1660	cmd.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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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\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\Toolbar	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\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
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE

pid	process
792	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

vbc.execmd.exe

pid	process
1028	vbc.exe
1028	vbc.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe
1660	cmd.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmd.exe

pid process

1028 vbc.exe
1028 vbc.exe
1028 vbc.exe
1660 cmd.exe
1660 cmd.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execmd.exe

description pid process

Token: SeDebugPrivilege 1028 vbc.exe
Token: SeDebugPrivilege 1660 cmd.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 3 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE
792 EXCEL.EXE
792 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1028	vbc.exe
Token: SeDebugPrivilege	1660	cmd.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
792	EXCEL.EXE
792	EXCEL.EXE
792	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 1964 wrote to memory of 1748	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1748	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1748	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1748	1964	EQNEDT32.EXE	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1028	1748	vbc.exe	vbc.exe
PID 1212 wrote to memory of 1660	1212	Explorer.EXE	cmd.exe
PID 1212 wrote to memory of 1660	1212	Explorer.EXE	cmd.exe
PID 1212 wrote to memory of 1660	1212	Explorer.EXE	cmd.exe
PID 1212 wrote to memory of 1660	1212	Explorer.EXE	cmd.exe
PID 1660 wrote to memory of 1620	1660	cmd.exe	cmd.exe
PID 1660 wrote to memory of 1620	1660	cmd.exe	cmd.exe
PID 1660 wrote to memory of 1620	1660	cmd.exe	cmd.exe
PID 1660 wrote to memory of 1620	1660	cmd.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:1212

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\notice of arrival.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:792

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1620

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 use of WriteProcessMemory
PID:1748

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:1028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

Scripting

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
C:\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
C:\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
\Users\Public\vbc.exe
MD5
3b8915f2201cd0d307fd89e6b0b453e9

SHA1
c911c32eafbeab116ce976b1fac6f6fa4f7c0997

SHA256
b9a286880c70bf7b6b049c8be7b7b14d8318b6c38d04185eced4bc48795330ff

SHA512
7e58a662c6b658c8d663797747a0ff1dbd94e8e59b7cc6a48352b3f50e53a33efd4c29c5ca737244647e4ad02e0f70dbdfa277f6782a1765b22c4a71e3cec4c3

Download Submit
memory/764-6-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmp

Filesize
2.5MB

Download
memory/792-3-0x0000000071CB1000-0x0000000071CB3000-memory.dmp

Filesize
8KB

Download
memory/792-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/792-2-0x000000002F631000-0x000000002F634000-memory.dmp

Filesize
12KB

Download
memory/1028-25-0x0000000000190000-0x00000000001A1000-memory.dmp

Filesize
68KB

Download
memory/1028-20-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1028-24-0x0000000000B10000-0x0000000000E13000-memory.dmp

Filesize
3.0MB

Download
memory/1028-21-0x000000000041D070-mapping.dmp

Download
memory/1212-33-0x0000000005070000-0x000000000516D000-memory.dmp

Filesize
1012KB

Download
memory/1212-26-0x0000000006BE0000-0x0000000006D71000-memory.dmp

Filesize
1.6MB

Download
memory/1620-28-0x0000000000000000-mapping.dmp

Download
memory/1660-27-0x0000000000000000-mapping.dmp

Download
memory/1660-30-0x00000000001C0000-0x00000000001E9000-memory.dmp

Filesize
164KB

Download
memory/1660-31-0x0000000001EA0000-0x00000000021A3000-memory.dmp

Filesize
3.0MB

Download
memory/1660-29-0x0000000049E00000-0x0000000049E4C000-memory.dmp

Filesize
304KB

Download
memory/1660-32-0x0000000001E10000-0x0000000001EA0000-memory.dmp

Filesize
576KB

Download
memory/1748-19-0x0000000000310000-0x000000000031F000-memory.dmp

Filesize
60KB

Download
memory/1748-11-0x0000000000000000-mapping.dmp

Download
memory/1748-18-0x0000000004910000-0x0000000004911000-memory.dmp

Filesize
4KB

Download
memory/1748-17-0x0000000001F80000-0x0000000001FD6000-memory.dmp

Filesize
344KB

Download
memory/1748-14-0x000000006CD60000-0x000000006D44E000-memory.dmp

Filesize
6.9MB

Download
memory/1748-15-0x0000000000920000-0x0000000000921000-memory.dmp

Filesize
4KB

Download
memory/1964-5-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads