formbook | 95f088219d2f2c47bbf22b620719c04ede9f2befa6e7e1e80a663e257adc29d8

General

Target

NEW AGREEMRNT 18-01-2021.xlsx
Size

2.2MB
MD5

07d3c47f16d42558250c95880719c325
SHA1

effc9cbec24ef8cbbc1fd515ba1207c0a4667204
SHA256

95f088219d2f2c47bbf22b620719c04ede9f2befa6e7e1e80a663e257adc29d8
SHA512

d0cc3e03522772ca0e91e0335be281eac4ba2d241e1017030c8c85d4e2ed89054c385e0b874f07437aca873c5f0a65505c59db5d12c286901631a8d238b271da

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/1716-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1716-21-0x000000000041CFF0-mapping.dmp	xloader
behavioral1/memory/1220-29-0x00000000000C0000-0x00000000000E8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 800 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

300 vbc.exe
1716 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

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

Scripting
T1064

flow	pid	process
6	800	EQNEDT32.EXE

pid	process
300	vbc.exe
1716	vbc.exe

pid	process
800	EQNEDT32.EXE
800	EQNEDT32.EXE
800	EQNEDT32.EXE
800	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmmon32.exe

description	pid	process	target process
PID 300 set thread context of 1716	300	vbc.exe	vbc.exe
PID 1716 set thread context of 1388	1716	vbc.exe	Explorer.EXE
PID 1220 set thread context of 1388	1220	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

800 EQNEDT32.EXE

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

pid	process
800	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\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
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
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 (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\Toolbar	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1968 EXCEL.EXE

pid	process
1968	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

vbc.execmmon32.exe

pid	process
1716	vbc.exe
1716	vbc.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe
1220	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmmon32.exe

pid process

1716 vbc.exe
1716 vbc.exe
1716 vbc.exe
1220 cmmon32.exe
1220 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1716 vbc.exe
Token: SeDebugPrivilege 1220 cmmon32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1968 EXCEL.EXE
1968 EXCEL.EXE
1968 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1716	vbc.exe
Token: SeDebugPrivilege	1220	cmmon32.exe

pid	process
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 800 wrote to memory of 300	800	EQNEDT32.EXE	vbc.exe
PID 800 wrote to memory of 300	800	EQNEDT32.EXE	vbc.exe
PID 800 wrote to memory of 300	800	EQNEDT32.EXE	vbc.exe
PID 800 wrote to memory of 300	800	EQNEDT32.EXE	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 300 wrote to memory of 1716	300	vbc.exe	vbc.exe
PID 1388 wrote to memory of 1220	1388	Explorer.EXE	cmmon32.exe
PID 1388 wrote to memory of 1220	1388	Explorer.EXE	cmmon32.exe
PID 1388 wrote to memory of 1220	1388	Explorer.EXE	cmmon32.exe
PID 1388 wrote to memory of 1220	1388	Explorer.EXE	cmmon32.exe
PID 1220 wrote to memory of 928	1220	cmmon32.exe	cmd.exe
PID 1220 wrote to memory of 928	1220	cmmon32.exe	cmd.exe
PID 1220 wrote to memory of 928	1220	cmmon32.exe	cmd.exe
PID 1220 wrote to memory of 928	1220	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1388

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 AGREEMRNT 18-01-2021.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1968

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:1220

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:928

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:800

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:300

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:1716

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
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
C:\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
C:\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
\Users\Public\vbc.exe
MD5
20485bdf912a946e680b2237a0584190

SHA1
d070917962559bac8543d0a7875dd19d46a5739f

SHA256
a12d62cf3071c705c6527b3a640f6dfa3f4823cf5289f8be7cba25ac14e79031

SHA512
5a8bb98c44e051b7b5f0339d3a0bdf3be438100fa74aaab962276fbc1a4fa79ad0314c30bf6468948e3ac797bf8a4e96fcfa8535177cb1a446ff2553998606cb

Download Submit
memory/300-17-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

Filesize
4KB

Download
memory/300-18-0x00000000004D0000-0x00000000004E3000-memory.dmp

Filesize
76KB

Download
memory/300-11-0x0000000000000000-mapping.dmp

Download
memory/300-14-0x000000006C180000-0x000000006C86E000-memory.dmp

Filesize
6.9MB

Download
memory/300-15-0x00000000012D0000-0x00000000012D1000-memory.dmp

Filesize
4KB

Download
memory/300-19-0x00000000056E0000-0x0000000005785000-memory.dmp

Filesize
660KB

Download
memory/800-5-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

Filesize
8KB

Download
memory/928-31-0x0000000000000000-mapping.dmp

Download
memory/1220-27-0x0000000000000000-mapping.dmp

Download
memory/1220-30-0x00000000020C0000-0x00000000023C3000-memory.dmp

Filesize
3.0MB

Download
memory/1220-33-0x0000000000730000-0x00000000007BF000-memory.dmp

Filesize
572KB

Download
memory/1220-28-0x0000000000800000-0x000000000080D000-memory.dmp

Filesize
52KB

Download
memory/1220-29-0x00000000000C0000-0x00000000000E8000-memory.dmp

Filesize
160KB

Download
memory/1388-26-0x0000000004050000-0x0000000004128000-memory.dmp

Filesize
864KB

Download
memory/1716-25-0x0000000000120000-0x0000000000130000-memory.dmp

Filesize
64KB

Download
memory/1716-24-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/1716-21-0x000000000041CFF0-mapping.dmp

Download
memory/1716-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1844-6-0x000007FEF5E90000-0x000007FEF610A000-memory.dmp

Filesize
2.5MB

Download
memory/1968-2-0x000000002F7E1000-0x000000002F7E4000-memory.dmp

Filesize
12KB

Download
memory/1968-3-0x0000000071031000-0x0000000071033000-memory.dmp

Filesize
8KB

Download
memory/1968-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads