formbook | 36a96f3eaba0f196e2a300d1200154b29a82165b0fe7e308ed67076d8464a88c

General

Target

NEW AGREEMENT 2021.xlsx
Size

2.4MB
MD5

d92414b9067c16cb85448a1d57495033
SHA1

289708f65413544d5162c5c6814efe24da10b38b
SHA256

36a96f3eaba0f196e2a300d1200154b29a82165b0fe7e308ed67076d8464a88c
SHA512

9bd8463ebe29826feea9aa04c94f6067ee40f6786e6137eb7a494e57bb417f0c2323997f7241387a946ef53c8932ba9b7d0f1dfb61265d96883d1feea0b33881

Score

10^/10

formbook xloader loader ransomware 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/1616-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1616-21-0x000000000041CFF0-mapping.dmp	xloader
behavioral1/memory/980-29-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 2016 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1860 vbc.exe
1616 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

2016 EQNEDT32.EXE
2016 EQNEDT32.EXE
2016 EQNEDT32.EXE
2016 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
6	2016	EQNEDT32.EXE

pid	process
1860	vbc.exe
1616	vbc.exe

pid	process
2016	EQNEDT32.EXE
2016	EQNEDT32.EXE
2016	EQNEDT32.EXE
2016	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exewlanext.exe

description	pid	process	target process
PID 1860 set thread context of 1616	1860	vbc.exe	vbc.exe
PID 1616 set thread context of 1220	1616	vbc.exe	Explorer.EXE
PID 980 set thread context of 1220	980	wlanext.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

2016 EQNEDT32.EXE

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

pid	process
2016	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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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 (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
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
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	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 (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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1980 EXCEL.EXE

pid	process
1980	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

vbc.exewlanext.exe

pid	process
1616	vbc.exe
1616	vbc.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe
980	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exewlanext.exe

pid process

1616 vbc.exe
1616 vbc.exe
1616 vbc.exe
980 wlanext.exe
980 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1616 vbc.exe
Token: SeDebugPrivilege 980 wlanext.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1980 EXCEL.EXE
1980 EXCEL.EXE
1980 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1616	vbc.exe
Token: SeDebugPrivilege	980	wlanext.exe

pid	process
1980	EXCEL.EXE
1980	EXCEL.EXE
1980	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 2016 wrote to memory of 1860	2016	EQNEDT32.EXE	vbc.exe
PID 2016 wrote to memory of 1860	2016	EQNEDT32.EXE	vbc.exe
PID 2016 wrote to memory of 1860	2016	EQNEDT32.EXE	vbc.exe
PID 2016 wrote to memory of 1860	2016	EQNEDT32.EXE	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 1616	1860	vbc.exe	vbc.exe
PID 1220 wrote to memory of 980	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 980	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 980	1220	Explorer.EXE	wlanext.exe
PID 1220 wrote to memory of 980	1220	Explorer.EXE	wlanext.exe
PID 980 wrote to memory of 280	980	wlanext.exe	cmd.exe
PID 980 wrote to memory of 280	980	wlanext.exe	cmd.exe
PID 980 wrote to memory of 280	980	wlanext.exe	cmd.exe
PID 980 wrote to memory of 280	980	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1220

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 2021.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1980

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1388

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:280

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:2016

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1860

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
PID:1616

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
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
C:\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
C:\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
\Users\Public\vbc.exe
MD5
7cc23aa86ee79dc1e11a395e85096ec3

SHA1
92e2887bc10089607141e78bc6702166ffa8ee32

SHA256
2938b38c785f109befe2eb2768082aea672c27e978e52998a4bca8526b1a669f

SHA512
0c475e681d8e0561913a2b62a8326f0de06390f3ae680dc498cb8c502fa917b8c04113abb159a0c8ec1358c95dea25eaf2770dbef7a4270081c2a1e6e481f93b

Download Submit
memory/280-31-0x0000000000000000-mapping.dmp

Download
memory/336-6-0x000007FEF7810000-0x000007FEF7A8A000-memory.dmp

Filesize
2.5MB

Download
memory/980-30-0x0000000000A70000-0x0000000000D73000-memory.dmp

Filesize
3.0MB

Download
memory/980-32-0x0000000000D80000-0x0000000000E0F000-memory.dmp

Filesize
572KB

Download
memory/980-28-0x0000000000E80000-0x0000000000E96000-memory.dmp

Filesize
88KB

Download
memory/980-29-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download
memory/980-27-0x0000000000000000-mapping.dmp

Download
memory/1220-33-0x0000000006390000-0x00000000064E6000-memory.dmp

Filesize
1.3MB

Download
memory/1220-26-0x0000000004D10000-0x0000000004DFA000-memory.dmp

Filesize
936KB

Download
memory/1616-25-0x00000000000B0000-0x00000000000C0000-memory.dmp

Filesize
64KB

Download
memory/1616-24-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/1616-21-0x000000000041CFF0-mapping.dmp

Download
memory/1616-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1860-17-0x0000000000C60000-0x0000000000C61000-memory.dmp

Filesize
4KB

Download
memory/1860-18-0x0000000000550000-0x0000000000573000-memory.dmp

Filesize
140KB

Download
memory/1860-19-0x00000000056B0000-0x0000000005718000-memory.dmp

Filesize
416KB

Download
memory/1860-15-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

Filesize
4KB

Download
memory/1860-14-0x000000006BC70000-0x000000006C35E000-memory.dmp

Filesize
6.9MB

Download
memory/1860-11-0x0000000000000000-mapping.dmp

Download
memory/1980-2-0x000000002FA71000-0x000000002FA74000-memory.dmp

Filesize
12KB

Download
memory/1980-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1980-3-0x0000000071201000-0x0000000071203000-memory.dmp

Filesize
8KB

Download
memory/2016-5-0x00000000760B1000-0x00000000760B3000-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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Downloads