formbook | 1d094beecd56ab33b6c148d46d32c8d0c9d628cd2008becb273565f1a7902649

General

Target

Shipping Documents.xlsx
Size

1.3MB
MD5

ec88cfb5b30b39215078445c9a76cec9
SHA1

41eddb8bf0c03a15dda66911de98a8c011337c5a
SHA256

1d094beecd56ab33b6c148d46d32c8d0c9d628cd2008becb273565f1a7902649
SHA512

2c8d73ae64db127e305afabc93a18df9590a8b9205cfe5800c2604c781b887c7dfaacbeddb97397b815079f594d330eae31862e4e4eab5efc60e0aeaec93a96d

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.learnhour.net/eaud/

Decoy

modshiro.com

mademarketingoss.com

austinjourls.info

wayupteam.com

crossingfinger.com

interseptors.com

gigashit.com

livetigo.com

halamankuningindonesia.com

windhammills.com

aylinahmet.com

mbacexonan.website

shopboxbarcelona.com

youyeslive.com

coonlinesportsbooks.com

guorunme.com

putlocker2.site

pencueaidnetwork.com

likevector.com

vulcanudachi-proclub.com

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/1712-16-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1712-17-0x000000000041D030-mapping.dmp	xloader
behavioral1/memory/1544-19-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1980 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

964 vbc.exe
1624 vbc.exe
1712 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1980 EQNEDT32.EXE
1980 EQNEDT32.EXE
1980 EQNEDT32.EXE
1980 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1980	EQNEDT32.EXE

pid	process
1980	EQNEDT32.EXE
1980	EQNEDT32.EXE
1980	EQNEDT32.EXE
1980	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exesystray.exe

description	pid	process	target process
PID 964 set thread context of 1712	964	vbc.exe	vbc.exe
PID 1712 set thread context of 1276	1712	vbc.exe	Explorer.EXE
PID 1544 set thread context of 1276	1544	systray.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

1980 EQNEDT32.EXE

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

pid	process
1980	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\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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\Toolbar	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 (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
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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1924 EXCEL.EXE

pid	process
1924	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

vbc.exevbc.exesystray.exe

pid	process
964	vbc.exe
964	vbc.exe
1712	vbc.exe
1712	vbc.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe
1544	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exesystray.exe

pid process

1712 vbc.exe
1712 vbc.exe
1712 vbc.exe
1544 systray.exe
1544 systray.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exesystray.exe

description pid process

Token: SeDebugPrivilege 964 vbc.exe
Token: SeDebugPrivilege 1712 vbc.exe
Token: SeDebugPrivilege 1544 systray.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1924 EXCEL.EXE
1924 EXCEL.EXE
1924 EXCEL.EXE

pid	process
1712	vbc.exe
1712	vbc.exe
1712	vbc.exe
1544	systray.exe
1544	systray.exe

description	pid	process
Token: SeDebugPrivilege	964	vbc.exe
Token: SeDebugPrivilege	1712	vbc.exe
Token: SeDebugPrivilege	1544	systray.exe

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

pid	process
1924	EXCEL.EXE
1924	EXCEL.EXE
1924	EXCEL.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1980 wrote to memory of 964	1980	EQNEDT32.EXE	vbc.exe
PID 1980 wrote to memory of 964	1980	EQNEDT32.EXE	vbc.exe
PID 1980 wrote to memory of 964	1980	EQNEDT32.EXE	vbc.exe
PID 1980 wrote to memory of 964	1980	EQNEDT32.EXE	vbc.exe
PID 964 wrote to memory of 1624	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1624	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1624	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1624	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 964 wrote to memory of 1712	964	vbc.exe	vbc.exe
PID 1276 wrote to memory of 1544	1276	Explorer.EXE	systray.exe
PID 1276 wrote to memory of 1544	1276	Explorer.EXE	systray.exe
PID 1276 wrote to memory of 1544	1276	Explorer.EXE	systray.exe
PID 1276 wrote to memory of 1544	1276	Explorer.EXE	systray.exe
PID 1544 wrote to memory of 2004	1544	systray.exe	cmd.exe
PID 1544 wrote to memory of 2004	1544	systray.exe	cmd.exe
PID 1544 wrote to memory of 2004	1544	systray.exe	cmd.exe
PID 1544 wrote to memory of 2004	1544	systray.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:1276

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\Shipping Documents.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1924

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1544

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:2004

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:1980

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:964

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1624

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:1712

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
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
C:\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
C:\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
C:\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
\Users\Public\vbc.exe
MD5
78977c6e1352baf3e4659e10724ac05f

SHA1
7a81e17504370035e70e0452b772fef857e5e169

SHA256
c41c3e04f58d643f5d30f52077a53a8c151d835aa44da144b9165a0297314f14

SHA512
f83606e8789dbc00321eb48a8521c4e75f48ca2fc0b6f60cb90ad9ff58e8b5cf3102a4382a806a4b5c30986446d7cb2b9df684e74b47f3da95eec5fd676e4559

Download Submit
memory/964-7-0x0000000000000000-mapping.dmp

Download
memory/964-11-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/964-13-0x00000000002E0000-0x00000000002EE000-memory.dmp

Filesize
56KB

Download
memory/964-14-0x00000000052C0000-0x000000000534E000-memory.dmp

Filesize
568KB

Download
memory/964-10-0x000000006C810000-0x000000006CEFE000-memory.dmp

Filesize
6.9MB

Download
memory/1544-19-0x0000000000000000-mapping.dmp

Download
memory/1544-20-0x0000000000F60000-0x0000000000F65000-memory.dmp

Filesize
20KB

Download
memory/1544-22-0x00000000040D0000-0x00000000041D9000-memory.dmp

Filesize
1.0MB

Download
memory/1712-16-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1712-17-0x000000000041D030-mapping.dmp

Download
memory/1728-2-0x000007FEF6680000-0x000007FEF68FA000-memory.dmp

Filesize
2.5MB

Download
memory/2004-21-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads