formbook | 735331b1e295c312c64f108dbff0a9bc3989551cc5ad92882598f0b5e35d7e07

General

Target

payment list.xlsx
Size

2.4MB
MD5

cc672e0048d4bbc7ca1275934451fba4
SHA1

fdb12ba03199fdb8f4b740d1ba48abaf0ae9bb98
SHA256

735331b1e295c312c64f108dbff0a9bc3989551cc5ad92882598f0b5e35d7e07
SHA512

3c210f85b74768d3a21e8909c399d3f3b1b816c166ce69523b2881327ae00eaa33f6c9db46d10f4b5bbb73cb8af25042f43271505cbc9dd24422cf005d22dfba

Score

10^/10

formbook xloader loader ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.classifoods.com/oean/

Decoy

keboate.club

whitehatiq.com

loimtech.com

icaroagencia.com

snigglez.com

noreservationsxpress.com

villacascabel.com

5037adairway.com

growingequity.fund

stafffully.com

bingent.info

tmssaleguarantee.com

neonatalfeedrates.com

george-beauty.com

oraghallaighjourney.net

zunutrition.com

sylkysmooveentertainment.com

ddmns6tzey2d.com

dvcstay.com

304shaughnessygreen.info

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/1708-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1708-21-0x000000000041CFE0-mapping.dmp	xloader
behavioral1/memory/288-31-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1988 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

676 vbc.exe
1708 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1988 EQNEDT32.EXE
1988 EQNEDT32.EXE
1988 EQNEDT32.EXE
1988 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

flow	pid	process
7	1988	EQNEDT32.EXE

pid	process
676	vbc.exe
1708	vbc.exe

pid	process
1988	EQNEDT32.EXE
1988	EQNEDT32.EXE
1988	EQNEDT32.EXE
1988	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execontrol.exe

description	pid	process	target process
PID 676 set thread context of 1708	676	vbc.exe	vbc.exe
PID 1708 set thread context of 1196	1708	vbc.exe	Explorer.EXE
PID 288 set thread context of 1196	288	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

1988 EQNEDT32.EXE

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

pid	process
1988	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\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\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
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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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

872 EXCEL.EXE

pid	process
872	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

vbc.execontrol.exe

pid	process
1708	vbc.exe
1708	vbc.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe
288	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execontrol.exe

pid process

1708 vbc.exe
1708 vbc.exe
1708 vbc.exe
288 control.exe
288 control.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execontrol.exe

description pid process

Token: SeDebugPrivilege 1708 vbc.exe
Token: SeDebugPrivilege 288 control.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

872 EXCEL.EXE
872 EXCEL.EXE
872 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1708	vbc.exe
Token: SeDebugPrivilege	288	control.exe

pid	process
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE

pid	process
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE

pid	process
872	EXCEL.EXE
872	EXCEL.EXE
872	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1988 wrote to memory of 676	1988	EQNEDT32.EXE	vbc.exe
PID 1988 wrote to memory of 676	1988	EQNEDT32.EXE	vbc.exe
PID 1988 wrote to memory of 676	1988	EQNEDT32.EXE	vbc.exe
PID 1988 wrote to memory of 676	1988	EQNEDT32.EXE	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 676 wrote to memory of 1708	676	vbc.exe	vbc.exe
PID 1196 wrote to memory of 288	1196	Explorer.EXE	control.exe
PID 1196 wrote to memory of 288	1196	Explorer.EXE	control.exe
PID 1196 wrote to memory of 288	1196	Explorer.EXE	control.exe
PID 1196 wrote to memory of 288	1196	Explorer.EXE	control.exe
PID 288 wrote to memory of 1720	288	control.exe	cmd.exe
PID 288 wrote to memory of 1720	288	control.exe	cmd.exe
PID 288 wrote to memory of 1720	288	control.exe	cmd.exe
PID 288 wrote to memory of 1720	288	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:1196

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 list.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:872

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:288

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1720

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:1988

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:676

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:1708

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

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
C:\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
C:\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
\Users\Public\vbc.exe
MD5
3a9e68325d16c69df66db1b81f666601

SHA1
21a067ed90eb91cb58466b00d379812823aab451

SHA256
82809ddcfce7489cd7b3c92abf7a4f8d4cc3a0b7b98f03712b7828c24d823b80

SHA512
c724a00a837b25ba95eeeb6980340fc4374f3c2f82dce00f0e18599a2e51cf2d72deb80310e79f070888699762c2a1e972fae53fafed8b818262f75e438f4dba

Download Submit
memory/288-33-0x0000000001E00000-0x0000000001E8F000-memory.dmp

Filesize
572KB

Download
memory/288-30-0x0000000000950000-0x000000000096F000-memory.dmp

Filesize
124KB

Download
memory/288-32-0x0000000002040000-0x0000000002343000-memory.dmp

Filesize
3.0MB

Download
memory/288-31-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download
memory/288-27-0x0000000000000000-mapping.dmp

Download
memory/676-17-0x0000000004CB0000-0x0000000004CB1000-memory.dmp

Filesize
4KB

Download
memory/676-11-0x0000000000000000-mapping.dmp

Download
memory/676-18-0x00000000003D0000-0x00000000003DE000-memory.dmp

Filesize
56KB

Download
memory/676-19-0x00000000055A0000-0x0000000005629000-memory.dmp

Filesize
548KB

Download
memory/676-15-0x0000000001050000-0x0000000001051000-memory.dmp

Filesize
4KB

Download
memory/676-14-0x000000006C8A0000-0x000000006CF8E000-memory.dmp

Filesize
6.9MB

Download
memory/872-2-0x000000002FAE1000-0x000000002FAE4000-memory.dmp

Filesize
12KB

Download
memory/872-3-0x00000000717F1000-0x00000000717F3000-memory.dmp

Filesize
8KB

Download
memory/872-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1196-34-0x0000000006390000-0x00000000064DE000-memory.dmp

Filesize
1.3MB

Download
memory/1196-26-0x0000000004830000-0x00000000048FC000-memory.dmp

Filesize
816KB

Download
memory/1708-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1708-25-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/1708-24-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/1708-21-0x000000000041CFE0-mapping.dmp

Download
memory/1720-29-0x0000000000000000-mapping.dmp

Download
memory/1724-6-0x000007FEF6550000-0x000007FEF67CA000-memory.dmp

Filesize
2.5MB

Download
memory/1988-5-0x0000000076371000-0x0000000076373000-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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