formbook | cc37109e31ff6ed6792d0f9201d3a5169a51dabae5d40806195344a8f3c8ac1f

General

Target

new order.xlsx
Size

1.4MB
MD5

6f72ba8da386566b04b4101c84087037
SHA1

8609e0eab98f629be62c8467cf89cb07e3273639
SHA256

cc37109e31ff6ed6792d0f9201d3a5169a51dabae5d40806195344a8f3c8ac1f
SHA512

8bbf675fc7cda860305c1bf491fcc2a8f456653b4bdc9d06961d1a7b5dbd429674b31715b0ebc4e03c3244587b406cc2504e024312b7b8c70470a26b41508e4d

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.h-v-biz.com/c8so/

Decoy

floeperformancegear.com

youtubeincreaser.com

cbb-is.com

bullsbikeusa.com

mama-asobitai.com

parkdaleliving.com

kinneintl.com

byrondramos.com

topangashaman.com

channel1057.com

nuancedigitalsolutions.com

kumheekim.com

erikating.com

ulinekorea.com

giftoes.com

blacknation.info

eventsdonevirtually.com

mx190501.com

bingent.info

seronofertilitymeds.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/1032-15-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1032-16-0x000000000041CFE0-mapping.dmp	xloader
behavioral1/memory/520-18-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1640 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

684 vbc.exe
1032 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1640 EQNEDT32.EXE
1640 EQNEDT32.EXE
1640 EQNEDT32.EXE
1640 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1640	EQNEDT32.EXE

pid	process
1640	EQNEDT32.EXE
1640	EQNEDT32.EXE
1640	EQNEDT32.EXE
1640	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exehelp.exe

description	pid	process	target process
PID 684 set thread context of 1032	684	vbc.exe	vbc.exe
PID 1032 set thread context of 1204	1032	vbc.exe	Explorer.EXE
PID 520 set thread context of 1204	520	help.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

1640 EQNEDT32.EXE

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

pid	process
1640	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-1-5-21-293278959-2699126792-324916226-1000\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
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\Toolbar	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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1680 EXCEL.EXE

pid	process
1680	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

vbc.exevbc.exehelp.exe

pid	process
684	vbc.exe
1032	vbc.exe
1032	vbc.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe
520	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exehelp.exe

pid process

1032 vbc.exe
1032 vbc.exe
1032 vbc.exe
520 help.exe
520 help.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exehelp.exe

description pid process

Token: SeDebugPrivilege 684 vbc.exe
Token: SeDebugPrivilege 1032 vbc.exe
Token: SeDebugPrivilege 520 help.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1680 EXCEL.EXE
1680 EXCEL.EXE
1680 EXCEL.EXE

pid	process
1032	vbc.exe
1032	vbc.exe
1032	vbc.exe
520	help.exe
520	help.exe

description	pid	process
Token: SeDebugPrivilege	684	vbc.exe
Token: SeDebugPrivilege	1032	vbc.exe
Token: SeDebugPrivilege	520	help.exe

pid	process
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1680	EXCEL.EXE
1680	EXCEL.EXE
1680	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 1640 wrote to memory of 684	1640	EQNEDT32.EXE	vbc.exe
PID 1640 wrote to memory of 684	1640	EQNEDT32.EXE	vbc.exe
PID 1640 wrote to memory of 684	1640	EQNEDT32.EXE	vbc.exe
PID 1640 wrote to memory of 684	1640	EQNEDT32.EXE	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 684 wrote to memory of 1032	684	vbc.exe	vbc.exe
PID 1204 wrote to memory of 520	1204	Explorer.EXE	help.exe
PID 1204 wrote to memory of 520	1204	Explorer.EXE	help.exe
PID 1204 wrote to memory of 520	1204	Explorer.EXE	help.exe
PID 1204 wrote to memory of 520	1204	Explorer.EXE	help.exe
PID 520 wrote to memory of 1872	520	help.exe	cmd.exe
PID 520 wrote to memory of 1872	520	help.exe	cmd.exe
PID 520 wrote to memory of 1872	520	help.exe	cmd.exe
PID 520 wrote to memory of 1872	520	help.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:1204

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\new order.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1680

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:520

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1872

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:1640

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:684

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:1032

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
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
C:\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
C:\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
\Users\Public\vbc.exe
MD5
cd925558146dc80ccf028ce0e9a5c542

SHA1
e91a37336f7c2accce48b407f622e1c2bfb7c76f

SHA256
41440a2e9db109558bde920dddba0eee3a5f269eef4c0d80eedf6a0bf0445a70

SHA512
54df05cc95e14b18c85f1621960ce32e4590b6a7ff06ac365369c3609a32a9dd9559a0ffd584532a1fa6fe591579415722159ac76c1b8bdfa9400034b72a88f4

Download Submit
memory/520-21-0x0000000004320000-0x00000000044A2000-memory.dmp

Filesize
1.5MB

Download
memory/520-19-0x0000000000B80000-0x0000000000B86000-memory.dmp

Filesize
24KB

Download
memory/520-18-0x0000000000000000-mapping.dmp

Download
memory/684-10-0x000000006C3E0000-0x000000006CACE000-memory.dmp

Filesize
6.9MB

Download
memory/684-14-0x0000000005760000-0x00000000057F1000-memory.dmp

Filesize
580KB

Download
memory/684-13-0x0000000000350000-0x000000000035E000-memory.dmp

Filesize
56KB

Download
memory/684-11-0x00000000008E0000-0x00000000008E1000-memory.dmp

Filesize
4KB

Download
memory/684-7-0x0000000000000000-mapping.dmp

Download
memory/1032-15-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1032-16-0x000000000041CFE0-mapping.dmp

Download
memory/1396-2-0x000007FEF81B0000-0x000007FEF842A000-memory.dmp

Filesize
2.5MB

Download
memory/1872-20-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads