formbook | 3be0adb00e31207de79f54ce067a7f815519945357e03ba87fca258dacdbc364

General

Target

_MVSEASEAL_RFQ_.xlsx
Size

2.3MB
MD5

266dcfcd2e08490c31848f65b2278422
SHA1

7e61b82d9be715199e14c1fea4e264e68cedcb8e
SHA256

3be0adb00e31207de79f54ce067a7f815519945357e03ba87fca258dacdbc364
SHA512

b9a873ce9d95af8a8ff095d8c51e967d948b6eb60a2585189d4f2c87a8d1f72f6524989e19a65d5270a384baa598948b96914fcc57aa7898dea802cf46c6d203

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.kaiyuansu.pro/incn/

Decoy

1bovvfk93jd.com

enlightenedhealthcoaching.com

findthatsmartphone.com

intelligentsystemsus.com

xn--lmsealamientos-tnb.com

eot0luh5ia.men

babanewshop.com

beyond-bit.com

meritane.com

buythinsecret.com

c2ornot.com

twelvesband.com

rktlends.com

bourseandish.com

happyshop88.com

topangacanyonvintage.com

epersonalloansonline.com

roofers-anaheim.com

shanghaiys.net

bickel.wtf

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/1904-20-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1904-21-0x000000000041D060-mapping.dmp	xloader
behavioral1/memory/1488-32-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1960 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1748 vbc.exe
1904 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1960	EQNEDT32.EXE

pid	process
1748	vbc.exe
1904	vbc.exe

pid	process
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exenetsh.exe

description	pid	process	target process
PID 1748 set thread context of 1904	1748	vbc.exe	vbc.exe
PID 1904 set thread context of 1212	1904	vbc.exe	Explorer.EXE
PID 1904 set thread context of 1212	1904	vbc.exe	Explorer.EXE
PID 1488 set thread context of 1212	1488	netsh.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

1960 EQNEDT32.EXE

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

pid	process
1960	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\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
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	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

792 EXCEL.EXE

pid	process
792	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

vbc.exenetsh.exe

pid	process
1904	vbc.exe
1904	vbc.exe
1904	vbc.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe
1488	netsh.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exenetsh.exe

pid process

1904 vbc.exe
1904 vbc.exe
1904 vbc.exe
1904 vbc.exe
1488 netsh.exe
1488 netsh.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exenetsh.exe

description pid process

Token: SeDebugPrivilege 1904 vbc.exe
Token: SeDebugPrivilege 1488 netsh.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	1904	vbc.exe
Token: SeDebugPrivilege	1488	netsh.exe

pid	process
792	EXCEL.EXE
792	EXCEL.EXE
792	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 1960 wrote to memory of 1748	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 1748	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 1748	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 1748	1960	EQNEDT32.EXE	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1748 wrote to memory of 1904	1748	vbc.exe	vbc.exe
PID 1212 wrote to memory of 1488	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1488	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1488	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1488	1212	Explorer.EXE	netsh.exe
PID 1488 wrote to memory of 1420	1488	netsh.exe	cmd.exe
PID 1488 wrote to memory of 1420	1488	netsh.exe	cmd.exe
PID 1488 wrote to memory of 1420	1488	netsh.exe	cmd.exe
PID 1488 wrote to memory of 1420	1488	netsh.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- 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\_MVSEASEAL_RFQ_.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:792

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1488

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1420

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:1960

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:1904

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
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
C:\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
C:\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
\Users\Public\vbc.exe
MD5
5c0942487820e14219794f029a64e1fe

SHA1
40b9b174db8a89f4c81f5ad66f6528f1bd9e8efb

SHA256
f991818096935708b00e812a9700a0215a1583047f2721552a9d6375abf0db75

SHA512
0cb1095c2349389b3aab75451cde102008771e8bb42565534501afc4c838193b834ad97e72f380d491bdded84075ce9fecd58b34b37ebd29751958aac9497849

Download Submit
memory/792-2-0x000000002FC31000-0x000000002FC34000-memory.dmp

Filesize
12KB

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

Filesize
8KB

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

Filesize
64KB

Download
memory/1212-26-0x00000000046B0000-0x0000000004780000-memory.dmp

Filesize
832KB

Download
memory/1212-28-0x0000000006D70000-0x0000000006EDF000-memory.dmp

Filesize
1.4MB

Download
memory/1296-6-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmp

Filesize
2.5MB

Download
memory/1420-30-0x0000000000000000-mapping.dmp

Download
memory/1488-32-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1488-33-0x00000000020D0000-0x00000000023D3000-memory.dmp

Filesize
3.0MB

Download
memory/1488-29-0x0000000000000000-mapping.dmp

Download
memory/1488-31-0x0000000000990000-0x00000000009AB000-memory.dmp

Filesize
108KB

Download
memory/1488-34-0x0000000000600000-0x0000000000690000-memory.dmp

Filesize
576KB

Download
memory/1748-17-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

Filesize
4KB

Download
memory/1748-19-0x00000000052F0000-0x0000000005351000-memory.dmp

Filesize
388KB

Download
memory/1748-18-0x00000000003A0000-0x00000000003C3000-memory.dmp

Filesize
140KB

Download
memory/1748-15-0x0000000000D70000-0x0000000000D71000-memory.dmp

Filesize
4KB

Download
memory/1748-14-0x000000006C670000-0x000000006CD5E000-memory.dmp

Filesize
6.9MB

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

Download
memory/1904-25-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/1904-24-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/1904-21-0x000000000041D060-mapping.dmp

Download
memory/1904-27-0x0000000000430000-0x0000000000441000-memory.dmp

Filesize
68KB

Download
memory/1904-20-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1960-5-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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