formbook | cbc3c8432b8722c7c4504e93ad97e9dcea7d7df9e018893e981cf7e5ebbc8eb4

General

Target

SHEXD210117S_ShippingDocument_DkD.xlsx
Size

2.3MB
MD5

bae7476565583cc0aa5a3947495b7626
SHA1

239ad3d5064b678d48ec18d3fae04110e7ef17e9
SHA256

cbc3c8432b8722c7c4504e93ad97e9dcea7d7df9e018893e981cf7e5ebbc8eb4
SHA512

c98274e684b3948d282b63f0ad8e83a8b86a2926da6b4865a1a6cd38005a428632fb34059eba7f096186220e0c1368a8d758c4af173e3510ab56590606071b02

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.stonescapes1.com/de92/

Decoy

zindaginews.com

tyelevator.com

schustermaninterests.com

algemixdelchef.com

doubscollectivites.com

e-butchery.com

hellbentmask.com

jumbpprivacy.com

teeniestiedye.com

playfulartwork.com

desertvacahs.com

w5470-hed.net

nepalearningpods.com

smoothandsleek.com

thecannaglow.com

torrentkittyla.com

industrytoyou.com

raquelvargas.net

rlc-nc.net

cryptoprises.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/2000-28-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/2000-29-0x000000000041D010-mapping.dmp	xloader
behavioral1/memory/940-38-0x00000000000D0000-0x00000000000F8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1412 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

932 vbc.exe
2000 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1412 EQNEDT32.EXE
1412 EQNEDT32.EXE
1412 EQNEDT32.EXE
1412 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1412	EQNEDT32.EXE

pid	process
1412	EQNEDT32.EXE
1412	EQNEDT32.EXE
1412	EQNEDT32.EXE
1412	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exesystray.exe

description	pid	process	target process
PID 932 set thread context of 2000	932	vbc.exe	vbc.exe
PID 2000 set thread context of 1200	2000	vbc.exe	Explorer.EXE
PID 940 set thread context of 1200	940	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

1412 EQNEDT32.EXE

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

pid	process
1412	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-1-5-21-293278959-2699126792-324916226-1000\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\MenuExt\E&xport to Microsoft Excel	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
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\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 (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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE

pid	process
1812	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

vbc.exevbc.exesystray.exe

pid	process
932	vbc.exe
932	vbc.exe
2000	vbc.exe
2000	vbc.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe
940	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exesystray.exe

pid process

2000 vbc.exe
2000 vbc.exe
2000 vbc.exe
940 systray.exe
940 systray.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exesystray.exe

description pid process

Token: SeDebugPrivilege 932 vbc.exe
Token: SeDebugPrivilege 2000 vbc.exe
Token: SeDebugPrivilege 940 systray.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE

pid	process
2000	vbc.exe
2000	vbc.exe
2000	vbc.exe
940	systray.exe
940	systray.exe

description	pid	process
Token: SeDebugPrivilege	932	vbc.exe
Token: SeDebugPrivilege	2000	vbc.exe
Token: SeDebugPrivilege	940	systray.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1412 wrote to memory of 932	1412	EQNEDT32.EXE	vbc.exe
PID 1412 wrote to memory of 932	1412	EQNEDT32.EXE	vbc.exe
PID 1412 wrote to memory of 932	1412	EQNEDT32.EXE	vbc.exe
PID 1412 wrote to memory of 932	1412	EQNEDT32.EXE	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 2000	932	vbc.exe	vbc.exe
PID 1200 wrote to memory of 940	1200	Explorer.EXE	systray.exe
PID 1200 wrote to memory of 940	1200	Explorer.EXE	systray.exe
PID 1200 wrote to memory of 940	1200	Explorer.EXE	systray.exe
PID 1200 wrote to memory of 940	1200	Explorer.EXE	systray.exe
PID 940 wrote to memory of 1060	940	systray.exe	cmd.exe
PID 940 wrote to memory of 1060	940	systray.exe	cmd.exe
PID 940 wrote to memory of 1060	940	systray.exe	cmd.exe
PID 940 wrote to memory of 1060	940	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:1200

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\SHEXD210117S_ShippingDocument_DkD.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1812

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:940

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1060

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:1412

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:932

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:2000

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
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
C:\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
C:\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
\Users\Public\vbc.exe
MD5
08554cb035e1c8f14b980019ffae237c

SHA1
2d64711f6503c3b6ffd792aa0119efffae61883d

SHA256
a243e6a605d8bb403f4cacb90a290d8f415d523dcc3c6eeedcf72f5cf803efa4

SHA512
540d02b2748201c115ef4d763d78167bc3d659fd75f927e7750c5aee8a7d6c268f7b80ff6c5d7df49555c5f3c9175760275f337b8bbeba558d83b9586f93a094

Download Submit
memory/516-6-0x000007FEF79D0000-0x000007FEF7C4A000-memory.dmp

Filesize
2.5MB

Download
memory/932-19-0x0000000000500000-0x0000000000511000-memory.dmp

Filesize
68KB

Download
memory/932-18-0x0000000004AA0000-0x0000000004AA1000-memory.dmp

Filesize
4KB

Download
memory/932-11-0x0000000000000000-mapping.dmp

Download
memory/932-27-0x0000000004E40000-0x0000000004E95000-memory.dmp

Filesize
340KB

Download
memory/932-14-0x000000006C3A0000-0x000000006CA8E000-memory.dmp

Filesize
6.9MB

Download
memory/932-15-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/932-17-0x0000000002070000-0x00000000020E6000-memory.dmp

Filesize
472KB

Download
memory/932-26-0x0000000000580000-0x000000000058E000-memory.dmp

Filesize
56KB

Download
memory/932-24-0x0000000000500000-0x0000000000511000-memory.dmp

Filesize
68KB

Download
memory/940-37-0x00000000007A0000-0x00000000007A5000-memory.dmp

Filesize
20KB

Download
memory/940-35-0x0000000000000000-mapping.dmp

Download
memory/940-41-0x0000000000560000-0x00000000005EF000-memory.dmp

Filesize
572KB

Download
memory/940-39-0x0000000002060000-0x0000000002363000-memory.dmp

Filesize
3.0MB

Download
memory/940-38-0x00000000000D0000-0x00000000000F8000-memory.dmp

Filesize
160KB

Download
memory/1060-36-0x0000000000000000-mapping.dmp

Download
memory/1200-34-0x0000000006F20000-0x00000000070B9000-memory.dmp

Filesize
1.6MB

Download
memory/1200-42-0x00000000066D0000-0x00000000067DF000-memory.dmp

Filesize
1.1MB

Download
memory/1412-5-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/1812-3-0x0000000071241000-0x0000000071243000-memory.dmp

Filesize
8KB

Download
memory/1812-2-0x000000002F521000-0x000000002F524000-memory.dmp

Filesize
12KB

Download
memory/1812-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2000-32-0x0000000000C70000-0x0000000000F73000-memory.dmp

Filesize
3.0MB

Download
memory/2000-33-0x0000000000270000-0x0000000000280000-memory.dmp

Filesize
64KB

Download
memory/2000-29-0x000000000041D010-mapping.dmp

Download
memory/2000-28-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads