formbook | 6f5b5a509984fec1db8a161cb82c74ead7bcdd7fb2f683e3a7c0ed69c70c69b6

General

Target

PO890299700006.xlsx
Size

1.6MB
MD5

2103ff7e24639940bd798329f87cc01b
SHA1

4791c53bc2f80cc3a57e21d02af58acad7be6bd4
SHA256

6f5b5a509984fec1db8a161cb82c74ead7bcdd7fb2f683e3a7c0ed69c70c69b6
SHA512

56c5f5685de78321e67758d60184fabd47e768a37e0f78e90a13823ca61bf71517608c55d073a960f9b2e3bd726fba073ed30a427a164941bee91ab0ea26a7ad

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/1368-16-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1368-17-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/1648-19-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1108 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

1396 vbc.exe
2044 vbc.exe
1368 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1108 EQNEDT32.EXE
1108 EQNEDT32.EXE
1108 EQNEDT32.EXE
1108 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1108	EQNEDT32.EXE

pid	process
1108	EQNEDT32.EXE
1108	EQNEDT32.EXE
1108	EQNEDT32.EXE
1108	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmmon32.exe

description	pid	process	target process
PID 1396 set thread context of 1368	1396	vbc.exe	vbc.exe
PID 1368 set thread context of 1260	1368	vbc.exe	Explorer.EXE
PID 1648 set thread context of 1260	1648	cmmon32.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

1108 EQNEDT32.EXE

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

pid	process
1108	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-1-5-21-3825035466-2522850611-591511364-1000\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
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\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\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
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 (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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1432 EXCEL.EXE

pid	process
1432	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

vbc.exevbc.execmmon32.exe

pid	process
1396	vbc.exe
1396	vbc.exe
1368	vbc.exe
1368	vbc.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe
1648	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmmon32.exe

pid process

1368 vbc.exe
1368 vbc.exe
1368 vbc.exe
1648 cmmon32.exe
1648 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1396 vbc.exe
Token: SeDebugPrivilege 1368 vbc.exe
Token: SeDebugPrivilege 1648 cmmon32.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1432 EXCEL.EXE
1432 EXCEL.EXE
1432 EXCEL.EXE

pid	process
1368	vbc.exe
1368	vbc.exe
1368	vbc.exe
1648	cmmon32.exe
1648	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1396	vbc.exe
Token: SeDebugPrivilege	1368	vbc.exe
Token: SeDebugPrivilege	1648	cmmon32.exe

pid	process
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1432	EXCEL.EXE
1432	EXCEL.EXE
1432	EXCEL.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1108 wrote to memory of 1396	1108	EQNEDT32.EXE	vbc.exe
PID 1108 wrote to memory of 1396	1108	EQNEDT32.EXE	vbc.exe
PID 1108 wrote to memory of 1396	1108	EQNEDT32.EXE	vbc.exe
PID 1108 wrote to memory of 1396	1108	EQNEDT32.EXE	vbc.exe
PID 1396 wrote to memory of 2044	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 2044	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 2044	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 2044	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1396 wrote to memory of 1368	1396	vbc.exe	vbc.exe
PID 1260 wrote to memory of 1648	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 1648	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 1648	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 1648	1260	Explorer.EXE	cmmon32.exe
PID 1648 wrote to memory of 528	1648	cmmon32.exe	cmd.exe
PID 1648 wrote to memory of 528	1648	cmmon32.exe	cmd.exe
PID 1648 wrote to memory of 528	1648	cmmon32.exe	cmd.exe
PID 1648 wrote to memory of 528	1648	cmmon32.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:1260

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\PO890299700006.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1432

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:528

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:1108

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:1396

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:2044

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:1368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

Scripting

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
C:\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
C:\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
C:\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
\Users\Public\vbc.exe
MD5
5da659b378ccc31833fdd2b4fbd1d411

SHA1
5572df75bfefdaa9185c37c66cb99140e924bca0

SHA256
cf6af1749c38b0af7660d67059470a189f593d6196c76d7739596061f8f0afc9

SHA512
465d218db61a561eec9ba6da2f251d430e328ea793bc2f36c78fed59853190bce344dbc52e4f05b2bb96b4c22cf7dd538a12a91be2c9c311a6c715b8d7bdfb28

Download Submit
memory/528-21-0x0000000000000000-mapping.dmp

Download
memory/1368-17-0x000000000041D070-mapping.dmp

Download
memory/1368-16-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1396-7-0x0000000000000000-mapping.dmp

Download
memory/1396-14-0x00000000007D0000-0x000000000084B000-memory.dmp

Filesize
492KB

Download
memory/1396-13-0x00000000004D0000-0x00000000004DE000-memory.dmp

Filesize
56KB

Download
memory/1396-11-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1396-10-0x000000006C4B0000-0x000000006CB9E000-memory.dmp

Filesize
6.9MB

Download
memory/1648-19-0x0000000000000000-mapping.dmp

Download
memory/1648-20-0x0000000000970000-0x000000000097D000-memory.dmp

Filesize
52KB

Download
memory/1648-22-0x0000000004A00000-0x0000000004ABA000-memory.dmp

Filesize
744KB

Download
memory/1940-2-0x000007FEF74A0000-0x000007FEF771A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads