formbook | 7cb3ffa44654db626e5eaec3cf679ac8c4c033db7103fff7da4e8ccb4aacf797

General

Target

HANYUAN PROJECT SDN BHD _PRJ S2505.xlsx
Size

1.2MB
MD5

7c5f2178cbddc544639af018ee27181b
SHA1

b587c5fe244c025ea92e8ec1e112da5a1d151084
SHA256

7cb3ffa44654db626e5eaec3cf679ac8c4c033db7103fff7da4e8ccb4aacf797
SHA512

69174a968a7920d5e258ef17b0f6a72000b9d074063a306e5642e1e3c05893e676382b3a6539f9e05151c6ce1718de19ab05580b03414f513fe90994570c1a84

Score

10^/10

formbook rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.surreal-myzrael.com/z7a/

Decoy

dotstories.xyz

egd-dz.com

caringhealthrecruit.com

transportdupont.com

teh-support.pro

catfad.com

pinewoodlakepool.net

pendekar-qq.info

duplicuty-garden.com

librtshop.com

stepmed.life

seatplusplus.com

bluzelle.money

weflew.xyz

bolaci.com

arrebatamentonews.com

sukesanblog.com

shadow-campaign.com

anpfiff.net

taste-of-poland.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral1/memory/932-77-0x00000000002C0000-0x00000000002CB000-memory.dmp	CustAttr

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/760-81-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/760-82-0x000000000041EB30-mapping.dmp	formbook
behavioral1/memory/564-90-0x00000000000D0000-0x00000000000FE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 616 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

932 vbc.exe
524 vbc.exe
760 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

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

Scripting
T1064

flow	pid	process
6	616	EQNEDT32.EXE

pid	process
616	EQNEDT32.EXE
616	EQNEDT32.EXE
616	EQNEDT32.EXE
616	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exewuapp.exe

description	pid	process	target process
PID 932 set thread context of 760	932	vbc.exe	vbc.exe
PID 760 set thread context of 1268	760	vbc.exe	Explorer.EXE
PID 564 set thread context of 1268	564	wuapp.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

616 EQNEDT32.EXE

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

pid	process
616	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-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

784 EXCEL.EXE

pid	process
784	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

vbc.exevbc.exewuapp.exe

pid	process
932	vbc.exe
932	vbc.exe
760	vbc.exe
760	vbc.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe
564	wuapp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exewuapp.exe

pid process

760 vbc.exe
760 vbc.exe
760 vbc.exe
564 wuapp.exe
564 wuapp.exe

pid	process
1268	Explorer.EXE

pid	process
760	vbc.exe
760	vbc.exe
760	vbc.exe
564	wuapp.exe
564	wuapp.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

vbc.exevbc.exewuapp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	932	vbc.exe
Token: SeDebugPrivilege	760	vbc.exe
Token: SeDebugPrivilege	564	wuapp.exe
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE

pid	process
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwuapp.exe

description	pid	process	target process
PID 616 wrote to memory of 932	616	EQNEDT32.EXE	vbc.exe
PID 616 wrote to memory of 932	616	EQNEDT32.EXE	vbc.exe
PID 616 wrote to memory of 932	616	EQNEDT32.EXE	vbc.exe
PID 616 wrote to memory of 932	616	EQNEDT32.EXE	vbc.exe
PID 932 wrote to memory of 524	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 524	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 524	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 524	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 932 wrote to memory of 760	932	vbc.exe	vbc.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 1268 wrote to memory of 564	1268	Explorer.EXE	wuapp.exe
PID 564 wrote to memory of 368	564	wuapp.exe	cmd.exe
PID 564 wrote to memory of 368	564	wuapp.exe	cmd.exe
PID 564 wrote to memory of 368	564	wuapp.exe	cmd.exe
PID 564 wrote to memory of 368	564	wuapp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1268

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\HANYUAN PROJECT SDN BHD _PRJ S2505.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:784

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:768

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:368

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:616

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:932

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:524

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:760

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
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
C:\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
C:\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
C:\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
\Users\Public\vbc.exe
MD5
56784137661c7e02c6c0e36b8fd217de

SHA1
5b5d6c51607a99af40889379e369f8ecb98f95b8

SHA256
7d65154a5dc05da45ebfe7b8a5bdb4858bf80812060257a5bde5d90ab12b23a6

SHA512
fbf7c67d3598b7e62ee9eb77cb6e190672fdd9e635f07752c46e7e815083a90a5927e9e0a5c22eac66f836916cdb2724ddc03b9fec3c402b5b073c225f0f026e

Download Submit
memory/368-88-0x0000000000000000-mapping.dmp

Download
memory/564-92-0x0000000000A20000-0x0000000000AB3000-memory.dmp

Filesize
588KB

Download
memory/564-89-0x0000000000F10000-0x0000000000F1B000-memory.dmp

Filesize
44KB

Download
memory/564-87-0x0000000000000000-mapping.dmp

Download
memory/564-90-0x00000000000D0000-0x00000000000FE000-memory.dmp

Filesize
184KB

Download
memory/564-91-0x0000000000BA0000-0x0000000000EA3000-memory.dmp

Filesize
3.0MB

Download
memory/616-63-0x0000000075AA1000-0x0000000075AA3000-memory.dmp

Filesize
8KB

Download
memory/760-82-0x000000000041EB30-mapping.dmp

Download
memory/760-81-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/760-85-0x00000000004A0000-0x00000000004B4000-memory.dmp

Filesize
80KB

Download
memory/760-84-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/784-74-0x0000000006060000-0x0000000006CAA000-memory.dmp

Filesize
12.3MB

Download
memory/784-76-0x0000000006060000-0x0000000006CAA000-memory.dmp

Filesize
12.3MB

Download
memory/784-75-0x0000000006060000-0x0000000006CAA000-memory.dmp

Filesize
12.3MB

Download
memory/784-93-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/784-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/784-60-0x000000002F991000-0x000000002F994000-memory.dmp

Filesize
12KB

Download
memory/784-61-0x0000000071091000-0x0000000071093000-memory.dmp

Filesize
8KB

Download
memory/932-68-0x0000000000000000-mapping.dmp

Download
memory/932-79-0x0000000000D50000-0x0000000000D85000-memory.dmp

Filesize
212KB

Download
memory/932-78-0x0000000005100000-0x000000000517A000-memory.dmp

Filesize
488KB

Download
memory/932-77-0x00000000002C0000-0x00000000002CB000-memory.dmp

Filesize
44KB

Download
memory/932-73-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/932-71-0x00000000012F0000-0x00000000012F1000-memory.dmp

Filesize
4KB

Download
memory/1268-86-0x0000000006C20000-0x0000000006DAD000-memory.dmp

Filesize
1.6MB

Download
memory/1268-94-0x0000000006160000-0x0000000006261000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads