formbook | 78a37255aa8d51e37547d76b29711dae8a9209af7b798590260fb02ee9fe7c76

General

Target

PO85937758859777.xlsx
Size

1.7MB
MD5

80580c09bbeb955baf5d08e6298cf952
SHA1

5d2877c47fd701cff2f29e8935946e119baad62a
SHA256

78a37255aa8d51e37547d76b29711dae8a9209af7b798590260fb02ee9fe7c76
SHA512

0b8bf73ada3797cadea6d6c74a61243b20100f5f0580c3ef59d2ad360dd4d4044a56fb6939915c317f9f07ebf7a35c92ab006deff47c4e602f974be787e1368b

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.bodyfuelrtd.com/8rg4/

Decoy

fakecostasunglasses.com

twinbrothers.pizza

jizhoujsp.com

qscrit.com

hotelmanise.com

fer-ua.online

europserver-simcloud.systems

redwap2.pro

betwalkoffame.com

latashalovemillionaire.com

8million-lr.com

tomatrader.com

modaluxcutabovefitness.com

shishijiazu.com

cckytx.com

reversehomeloansmiami.com

imaginenationnetwork.com

thecyclistshop.com

jorgegiljewelry.com

hlaprotiens.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/1684-15-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1684-16-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/1596-18-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1636 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1112 vbc.exe
1684 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1636 EQNEDT32.EXE
1636 EQNEDT32.EXE
1636 EQNEDT32.EXE
1636 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1636	EQNEDT32.EXE

pid	process
1112	vbc.exe
1684	vbc.exe

pid	process
1636	EQNEDT32.EXE
1636	EQNEDT32.EXE
1636	EQNEDT32.EXE
1636	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exehelp.exe

description	pid	process	target process
PID 1112 set thread context of 1684	1112	vbc.exe	vbc.exe
PID 1684 set thread context of 1248	1684	vbc.exe	Explorer.EXE
PID 1596 set thread context of 1248	1596	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

1636 EQNEDT32.EXE

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

pid	process
1636	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\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
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\MenuExt	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\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\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

2012 EXCEL.EXE

pid	process
2012	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

vbc.exehelp.exe

pid	process
1684	vbc.exe
1684	vbc.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe
1596	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exehelp.exe

pid process

1684 vbc.exe
1684 vbc.exe
1684 vbc.exe
1596 help.exe
1596 help.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exehelp.exe

description pid process

Token: SeDebugPrivilege 1684 vbc.exe
Token: SeDebugPrivilege 1596 help.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

2012 EXCEL.EXE
2012 EXCEL.EXE
2012 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1684	vbc.exe
Token: SeDebugPrivilege	1596	help.exe

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
2012	EXCEL.EXE
2012	EXCEL.EXE
2012	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 1636 wrote to memory of 1112	1636	EQNEDT32.EXE	vbc.exe
PID 1636 wrote to memory of 1112	1636	EQNEDT32.EXE	vbc.exe
PID 1636 wrote to memory of 1112	1636	EQNEDT32.EXE	vbc.exe
PID 1636 wrote to memory of 1112	1636	EQNEDT32.EXE	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1112 wrote to memory of 1684	1112	vbc.exe	vbc.exe
PID 1248 wrote to memory of 1596	1248	Explorer.EXE	help.exe
PID 1248 wrote to memory of 1596	1248	Explorer.EXE	help.exe
PID 1248 wrote to memory of 1596	1248	Explorer.EXE	help.exe
PID 1248 wrote to memory of 1596	1248	Explorer.EXE	help.exe
PID 1596 wrote to memory of 1572	1596	help.exe	cmd.exe
PID 1596 wrote to memory of 1572	1596	help.exe	cmd.exe
PID 1596 wrote to memory of 1572	1596	help.exe	cmd.exe
PID 1596 wrote to memory of 1572	1596	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:1248

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\PO85937758859777.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2012

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:1596

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1572

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:1636

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1112

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:1684

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
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
C:\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
C:\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
\Users\Public\vbc.exe
MD5
16e1a5d26c0698ac48d63661264e0ba1

SHA1
5e61d05157c4aa1acfc6a89de619f6bbcad176f6

SHA256
e4e84d03d4cb709d737f9ee3e69b40d797e452d83faa35f0a06bb78a87ad0984

SHA512
2b2e106e5bb198bfa88469a7c4b7b72c93e0c91e8037128033df25075c02855f9c0b4e97748cc9fb317c32ad19e3930e4274cf806ed7b7aea377734adb4d9d4e

Download Submit
memory/364-2-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmp

Filesize
2.5MB

Download
memory/1112-10-0x000000006CB30000-0x000000006D21E000-memory.dmp

Filesize
6.9MB

Download
memory/1112-11-0x0000000001080000-0x0000000001081000-memory.dmp

Filesize
4KB

Download
memory/1112-13-0x0000000000350000-0x000000000035E000-memory.dmp

Filesize
56KB

Download
memory/1112-14-0x00000000052B0000-0x0000000005329000-memory.dmp

Filesize
484KB

Download
memory/1112-7-0x0000000000000000-mapping.dmp

Download
memory/1572-20-0x0000000000000000-mapping.dmp

Download
memory/1596-18-0x0000000000000000-mapping.dmp

Download
memory/1596-19-0x0000000000F60000-0x0000000000F66000-memory.dmp

Filesize
24KB

Download
memory/1596-21-0x0000000004280000-0x00000000043CD000-memory.dmp

Filesize
1.3MB

Download
memory/1684-15-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1684-16-0x000000000041D070-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads