formbook | 99cadef901a24aecf640895bb97378b6202ca0e625ba63951aea1a1e87b7209b

General

Target

NEW AGREEMENT 19 01 2021.xlsx
Size

2.2MB
MD5

54e7a0d10b951a9644ac392523a65fe8
SHA1

81906d0f4da1f87b9873d5f4b198c83bb88f4789
SHA256

99cadef901a24aecf640895bb97378b6202ca0e625ba63951aea1a1e87b7209b
SHA512

05615570d0bdfea44a49e095b4826507eadb508b1ded0a6abcbb6e15b891e990bd0bc205459bd213780d56a20f59ffcbed6a1fbacdd2e755da5f74d158013f48

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.rizrvd.com/bw82/

Decoy

fundamentaliemef.com

gallerybrows.com

leadeligey.com

octoberx2.online

climaxnovels.com

gdsjgf.com

curateherstories.com

blacksailus.com

yjpps.com

gmobilet.com

fcoins.club

foreverlive2027.com

healthyfifties.com

wmarquezy.com

housebulb.com

thebabyfriendly.com

primajayaintiperkasa.com

learnplaychess.com

chrisbubser.digital

xn--avenr-wsa.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/1344-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1344-21-0x000000000041CFF0-mapping.dmp	xloader
behavioral1/memory/744-32-0x0000000000090000-0x00000000000B8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

4 1156 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1160 vbc.exe
1344 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1156 EQNEDT32.EXE
1156 EQNEDT32.EXE
1156 EQNEDT32.EXE
1156 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
4	1156	EQNEDT32.EXE

pid	process
1160	vbc.exe
1344	vbc.exe

pid	process
1156	EQNEDT32.EXE
1156	EQNEDT32.EXE
1156	EQNEDT32.EXE
1156	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.execmstp.exe

description	pid	process	target process
PID 1160 set thread context of 1344	1160	vbc.exe	vbc.exe
PID 1344 set thread context of 1216	1344	vbc.exe	Explorer.EXE
PID 1344 set thread context of 1216	1344	vbc.exe	Explorer.EXE
PID 744 set thread context of 1216	744	cmstp.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

1156 EQNEDT32.EXE

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

pid	process
1156	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
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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\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
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

1852 EXCEL.EXE

pid	process
1852	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

vbc.execmstp.exe

pid	process
1344	vbc.exe
1344	vbc.exe
1344	vbc.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe
744	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.execmstp.exe

pid process

1344 vbc.exe
1344 vbc.exe
1344 vbc.exe
1344 vbc.exe
744 cmstp.exe
744 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execmstp.exe

description pid process

Token: SeDebugPrivilege 1344 vbc.exe
Token: SeDebugPrivilege 744 cmstp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1216 Explorer.EXE
1216 Explorer.EXE
1216 Explorer.EXE
1216 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1216 Explorer.EXE
1216 Explorer.EXE
1216 Explorer.EXE
1216 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1852 EXCEL.EXE
1852 EXCEL.EXE
1852 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1344	vbc.exe
Token: SeDebugPrivilege	744	cmstp.exe

pid	process
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE

pid	process
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE

pid	process
1852	EXCEL.EXE
1852	EXCEL.EXE
1852	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EQNEDT32.EXEvbc.exevbc.execmstp.exe

description	pid	process	target process
PID 1156 wrote to memory of 1160	1156	EQNEDT32.EXE	vbc.exe
PID 1156 wrote to memory of 1160	1156	EQNEDT32.EXE	vbc.exe
PID 1156 wrote to memory of 1160	1156	EQNEDT32.EXE	vbc.exe
PID 1156 wrote to memory of 1160	1156	EQNEDT32.EXE	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1160 wrote to memory of 1344	1160	vbc.exe	vbc.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 1344 wrote to memory of 744	1344	vbc.exe	cmstp.exe
PID 744 wrote to memory of 1988	744	cmstp.exe	cmd.exe
PID 744 wrote to memory of 1988	744	cmstp.exe	cmd.exe
PID 744 wrote to memory of 1988	744	cmstp.exe	cmd.exe
PID 744 wrote to memory of 1988	744	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1216

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 AGREEMENT 19 01 2021.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1852

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:1156

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1160

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1344

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
5⤵
PID:1988

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
C:\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
C:\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
\Users\Public\vbc.exe
MD5
24f9d7832d2ec8673c62aea51e58717e

SHA1
782d70219eda646b7b134e26bd41ac71b90800f2

SHA256
7b5c683c8f9571d55f21bdd73cec4b0f39a169265e58c5877ca94203e61548af

SHA512
f20fab6b7de97b2b95088f5684ab50c074645259672685429189bbef158515ae392c212f5a15fd23bdc0e11b764ff45f4a1f2d98765f63ab58034ff9c0f965b0

Download Submit
memory/744-31-0x0000000000490000-0x00000000004A8000-memory.dmp

Filesize
96KB

Download
memory/744-32-0x0000000000090000-0x00000000000B8000-memory.dmp

Filesize
160KB

Download
memory/744-34-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/744-35-0x0000000001DC0000-0x0000000001E4F000-memory.dmp

Filesize
572KB

Download
memory/744-29-0x0000000000000000-mapping.dmp

Download
memory/1156-5-0x00000000756C1000-0x00000000756C3000-memory.dmp

Filesize
8KB

Download
memory/1160-17-0x0000000000470000-0x0000000000493000-memory.dmp

Filesize
140KB

Download
memory/1160-14-0x000000006C7E0000-0x000000006CECE000-memory.dmp

Filesize
6.9MB

Download
memory/1160-18-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

Filesize
4KB

Download
memory/1160-19-0x0000000004E40000-0x0000000004EA1000-memory.dmp

Filesize
388KB

Download
memory/1160-15-0x0000000000F30000-0x0000000000F31000-memory.dmp

Filesize
4KB

Download
memory/1160-11-0x0000000000000000-mapping.dmp

Download
memory/1216-26-0x0000000004C40000-0x0000000004D66000-memory.dmp

Filesize
1.1MB

Download
memory/1216-28-0x0000000004D70000-0x0000000004EBB000-memory.dmp

Filesize
1.3MB

Download
memory/1344-24-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/1344-25-0x00000000000F0000-0x0000000000100000-memory.dmp

Filesize
64KB

Download
memory/1344-27-0x00000000001B0000-0x00000000001C0000-memory.dmp

Filesize
64KB

Download
memory/1344-21-0x000000000041CFF0-mapping.dmp

Download
memory/1344-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1852-2-0x000000002FD51000-0x000000002FD54000-memory.dmp

Filesize
12KB

Download
memory/1852-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1852-3-0x0000000071681000-0x0000000071683000-memory.dmp

Filesize
8KB

Download
memory/1948-6-0x000007FEF77D0000-0x000007FEF7A4A000-memory.dmp

Filesize
2.5MB

Download
memory/1988-33-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads