formbook | 2e4c648b422366723d7095a3bcbe66b547c3bc61f1448bb10793cb8ea73a6390

General

Target

payment advice.xlsx
Size

1.2MB
MD5

ad817786e05c5177fbe3295d94a783b5
SHA1

2f6fd26a661aecb7ff82dee366fe4a089a19dd6b
SHA256

2e4c648b422366723d7095a3bcbe66b547c3bc61f1448bb10793cb8ea73a6390
SHA512

ed8a25bd90f675b64e6f50f6e3e5e5f5daab878f34826a23748f2cf7b1a2f77307db716243a25420d159d31c553f4de82476151cc64dc85c611270d0e17b6135

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.aftabzahur.com/wgn/

Decoy

kokokara-life-blog.com

faswear.com

futureleadershiptoday.com

date4done.xyz

thecouponinn.com

bbeycarpetsf.com

propolisnasalspray.com

jinjudiamond.com

goodevectors.com

nehyam.com

evalinkapuppets.com

what-if-statistics.com

rateofrisk.com

impacttestonlinne.com

servis-kaydet.info

coloniacafe.com

marcemarketing.com

aarigging.com

goddesswitchery.com

jasqblo.icu

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/2040-17-0x000000000041EAC0-mapping.dmp	formbook
behavioral1/memory/2040-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1764-20-0x0000000000000000-mapping.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1992 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

816 vbc.exe
1512 vbc.exe
2040 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1992 EQNEDT32.EXE
1992 EQNEDT32.EXE
1992 EQNEDT32.EXE
1992 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1992	EQNEDT32.EXE

pid	process
1992	EQNEDT32.EXE
1992	EQNEDT32.EXE
1992	EQNEDT32.EXE
1992	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.execontrol.exe

description	pid	process	target process
PID 816 set thread context of 2040	816	vbc.exe	vbc.exe
PID 2040 set thread context of 1268	2040	vbc.exe	Explorer.EXE
PID 2040 set thread context of 1268	2040	vbc.exe	Explorer.EXE
PID 1764 set thread context of 1268	1764	control.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

1992 EQNEDT32.EXE

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

pid	process
1992	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2044 EXCEL.EXE

pid	process
2044	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

vbc.exevbc.execontrol.exe

pid	process
816	vbc.exe
816	vbc.exe
2040	vbc.exe
2040	vbc.exe
2040	vbc.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe
1764	control.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.execontrol.exe

pid process

2040 vbc.exe
2040 vbc.exe
2040 vbc.exe
2040 vbc.exe
1764 control.exe
1764 control.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.execontrol.exe

description pid process

Token: SeDebugPrivilege 816 vbc.exe
Token: SeDebugPrivilege 2040 vbc.exe
Token: SeDebugPrivilege 1764 control.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

2044 EXCEL.EXE
2044 EXCEL.EXE
2044 EXCEL.EXE

pid	process
2040	vbc.exe
2040	vbc.exe
2040	vbc.exe
2040	vbc.exe
1764	control.exe
1764	control.exe

description	pid	process
Token: SeDebugPrivilege	816	vbc.exe
Token: SeDebugPrivilege	2040	vbc.exe
Token: SeDebugPrivilege	1764	control.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
2044	EXCEL.EXE
2044	EXCEL.EXE
2044	EXCEL.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1992 wrote to memory of 816	1992	EQNEDT32.EXE	vbc.exe
PID 1992 wrote to memory of 816	1992	EQNEDT32.EXE	vbc.exe
PID 1992 wrote to memory of 816	1992	EQNEDT32.EXE	vbc.exe
PID 1992 wrote to memory of 816	1992	EQNEDT32.EXE	vbc.exe
PID 816 wrote to memory of 1512	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 1512	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 1512	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 1512	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 816 wrote to memory of 2040	816	vbc.exe	vbc.exe
PID 1268 wrote to memory of 1764	1268	Explorer.EXE	control.exe
PID 1268 wrote to memory of 1764	1268	Explorer.EXE	control.exe
PID 1268 wrote to memory of 1764	1268	Explorer.EXE	control.exe
PID 1268 wrote to memory of 1764	1268	Explorer.EXE	control.exe
PID 1764 wrote to memory of 1076	1764	control.exe	cmd.exe
PID 1764 wrote to memory of 1076	1764	control.exe	cmd.exe
PID 1764 wrote to memory of 1076	1764	control.exe	cmd.exe
PID 1764 wrote to memory of 1076	1764	control.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:1268

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\payment advice.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2044

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:1764

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1076

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:1992

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:816

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1512

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2040

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
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
C:\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
C:\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
C:\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
\Users\Public\vbc.exe
MD5
fe4641996264a889eab227341a316ae5

SHA1
a9f1db191bead21f1a4e02a72370db949c8b2e72

SHA256
ca49693539a7fccb4dc007ea5bd6f7c54f377bbb00079dfa177ac9c4f2a189b2

SHA512
a6c7ec734569d47e425e3e742aaa12a64940e28bf2d2c0a1e241b8df3eebd841287b3830aacd528d753b8a2734d712c323c66ee22bdcd36fa926f4294acef2d3

Download Submit
memory/816-13-0x0000000000550000-0x000000000055E000-memory.dmp

Filesize
56KB

Download
memory/816-11-0x0000000001090000-0x0000000001091000-memory.dmp

Filesize
4KB

Download
memory/816-14-0x0000000000490000-0x000000000050F000-memory.dmp

Filesize
508KB

Download
memory/816-10-0x000000006C400000-0x000000006CAEE000-memory.dmp

Filesize
6.9MB

Download
memory/816-7-0x0000000000000000-mapping.dmp

Download
memory/1076-22-0x0000000000000000-mapping.dmp

Download
memory/1268-19-0x0000000005130000-0x0000000005205000-memory.dmp

Filesize
852KB

Download
memory/1764-20-0x0000000000000000-mapping.dmp

Download
memory/1764-21-0x0000000000370000-0x000000000038F000-memory.dmp

Filesize
124KB

Download
memory/1764-23-0x0000000001EF0000-0x000000000206C000-memory.dmp

Filesize
1.5MB

Download
memory/1772-2-0x000007FEF6510000-0x000007FEF678A000-memory.dmp

Filesize
2.5MB

Download
memory/2040-17-0x000000000041EAC0-mapping.dmp

Download
memory/2040-16-0x0000000000400000-0x000000000042E000-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