formbook | 7a7a4887dcc86e8b6a576ae2acf805881586ee672be261a2a91a8d7a6e78c5bd

General

Target

excel.DLLW32.dll
Size

24KB
MD5

c79d67e385569c8e4f090f0dc188cfff
SHA1

68ee64c9f281aa0dd0479c8e89289b2af0bf72e8
SHA256

7a7a4887dcc86e8b6a576ae2acf805881586ee672be261a2a91a8d7a6e78c5bd
SHA512

4b4b906e5089816e7c7fb09c594e72bdf751ddd0cc2276b1a01a4915233983814a2463ac7648300362505128c5198882248f05fb5a3483b4702daedbed92b918

Score

10^/10

formbook agilenet rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.happylittlexplorers.com/glgd/

Decoy

cdcbullies.com

qidajixie.com

bgimlv.com

sunflowerhybrid.com

kemal.cloud

canadadirect.net

mickey2nd.com

fastjobssearcher.com

tiny-tobi.com

inmedixequus.com

coollifeideas.com

triadelectronicsupply.com

lambyo.com

zxyoo.com

spokanemusicmag.com

sortporn.com

deadroomnyc.com

313mail.com

hexiptv.net

stanbiccargo-express.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
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/792-77-0x000000000041EBD0-mapping.dmp	formbook
behavioral1/memory/792-79-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook
behavioral1/memory/988-86-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

6 1984 rundll32.exe
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

hfgjfhfdgre546.exehfgjfhfdgre546.exe

pid process

624 hfgjfhfdgre546.exe
792 hfgjfhfdgre546.exe
Loads dropped DLL 2 IoCs

Processes:

rundll32.exehfgjfhfdgre546.exe

pid process

1984 rundll32.exe
624 hfgjfhfdgre546.exe

flow	pid	process
6	1984	rundll32.exe

pid	process
1984	rundll32.exe
624	hfgjfhfdgre546.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/624-71-0x0000000004D40000-0x0000000004D61000-memory.dmp	agile_net

Suspicious use of SetThreadContext 3 IoCs

Processes:

hfgjfhfdgre546.exehfgjfhfdgre546.execontrol.exe

description	pid	process	target process
PID 624 set thread context of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 792 set thread context of 1200	792	hfgjfhfdgre546.exe	Explorer.EXE
PID 988 set thread context of 1200	988	control.exe	Explorer.EXE

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

hfgjfhfdgre546.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C	hfgjfhfdgre546.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	hfgjfhfdgre546.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	hfgjfhfdgre546.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

hfgjfhfdgre546.exehfgjfhfdgre546.execontrol.exe

pid	process
624	hfgjfhfdgre546.exe
624	hfgjfhfdgre546.exe
792	hfgjfhfdgre546.exe
792	hfgjfhfdgre546.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe
988	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

hfgjfhfdgre546.execontrol.exe

pid process

792 hfgjfhfdgre546.exe
792 hfgjfhfdgre546.exe
792 hfgjfhfdgre546.exe
988 control.exe
988 control.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

hfgjfhfdgre546.exehfgjfhfdgre546.execontrol.exe

description pid process

Token: SeDebugPrivilege 624 hfgjfhfdgre546.exe
Token: SeDebugPrivilege 792 hfgjfhfdgre546.exe
Token: SeDebugPrivilege 988 control.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE

pid	process
792	hfgjfhfdgre546.exe
792	hfgjfhfdgre546.exe
792	hfgjfhfdgre546.exe
988	control.exe
988	control.exe

description	pid	process
Token: SeDebugPrivilege	624	hfgjfhfdgre546.exe
Token: SeDebugPrivilege	792	hfgjfhfdgre546.exe
Token: SeDebugPrivilege	988	control.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

rundll32.exerundll32.exehfgjfhfdgre546.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1636 wrote to memory of 1984	1636	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 624	1984	rundll32.exe	hfgjfhfdgre546.exe
PID 1984 wrote to memory of 624	1984	rundll32.exe	hfgjfhfdgre546.exe
PID 1984 wrote to memory of 624	1984	rundll32.exe	hfgjfhfdgre546.exe
PID 1984 wrote to memory of 624	1984	rundll32.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 624 wrote to memory of 792	624	hfgjfhfdgre546.exe	hfgjfhfdgre546.exe
PID 1200 wrote to memory of 988	1200	Explorer.EXE	control.exe
PID 1200 wrote to memory of 988	1200	Explorer.EXE	control.exe
PID 1200 wrote to memory of 988	1200	Explorer.EXE	control.exe
PID 1200 wrote to memory of 988	1200	Explorer.EXE	control.exe
PID 988 wrote to memory of 916	988	control.exe	cmd.exe
PID 988 wrote to memory of 916	988	control.exe	cmd.exe
PID 988 wrote to memory of 916	988	control.exe	cmd.exe
PID 988 wrote to memory of 916	988	control.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:1200

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\excel.DLLW32.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\excel.DLLW32.dll,#1
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1984

C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
"C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe"
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:624

C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
"C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:792

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe"
3⤵
PID:916

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
MD5
ebee31991b156db114ab560139198d8f

SHA1
59326bdcd208d288adbe67690e1dbeec0da26722

SHA256
3334766a549149bb18921ea6d05343412c99d36b57e3993b7610dfe689f5f194

SHA512
c2cb8649d644b394437a76fc34ef6fbda2a020fb565a0f457e2df41d5dec1c6bba26eaefd25d78c82964d43320a393b40728037672d14bd236893043b180744d

Download Submit
C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
MD5
ebee31991b156db114ab560139198d8f

SHA1
59326bdcd208d288adbe67690e1dbeec0da26722

SHA256
3334766a549149bb18921ea6d05343412c99d36b57e3993b7610dfe689f5f194

SHA512
c2cb8649d644b394437a76fc34ef6fbda2a020fb565a0f457e2df41d5dec1c6bba26eaefd25d78c82964d43320a393b40728037672d14bd236893043b180744d

Download Submit
C:\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
MD5
ebee31991b156db114ab560139198d8f

SHA1
59326bdcd208d288adbe67690e1dbeec0da26722

SHA256
3334766a549149bb18921ea6d05343412c99d36b57e3993b7610dfe689f5f194

SHA512
c2cb8649d644b394437a76fc34ef6fbda2a020fb565a0f457e2df41d5dec1c6bba26eaefd25d78c82964d43320a393b40728037672d14bd236893043b180744d

Download Submit
\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
MD5
ebee31991b156db114ab560139198d8f

SHA1
59326bdcd208d288adbe67690e1dbeec0da26722

SHA256
3334766a549149bb18921ea6d05343412c99d36b57e3993b7610dfe689f5f194

SHA512
c2cb8649d644b394437a76fc34ef6fbda2a020fb565a0f457e2df41d5dec1c6bba26eaefd25d78c82964d43320a393b40728037672d14bd236893043b180744d

Download Submit
\Users\Admin\AppData\Local\Temp\hfgjfhfdgre546.exe
MD5
ebee31991b156db114ab560139198d8f

SHA1
59326bdcd208d288adbe67690e1dbeec0da26722

SHA256
3334766a549149bb18921ea6d05343412c99d36b57e3993b7610dfe689f5f194

SHA512
c2cb8649d644b394437a76fc34ef6fbda2a020fb565a0f457e2df41d5dec1c6bba26eaefd25d78c82964d43320a393b40728037672d14bd236893043b180744d

Download Submit
memory/624-73-0x0000000004300000-0x000000000430B000-memory.dmp

Filesize
44KB

Download
memory/624-64-0x0000000000000000-mapping.dmp

Download
memory/624-74-0x0000000004360000-0x0000000004361000-memory.dmp

Filesize
4KB

Download
memory/624-67-0x0000000000350000-0x0000000000351000-memory.dmp

Filesize
4KB

Download
memory/624-69-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/624-71-0x0000000004D40000-0x0000000004D61000-memory.dmp

Filesize
132KB

Download
memory/624-72-0x00000000004F1000-0x00000000004F2000-memory.dmp

Filesize
4KB

Download
memory/792-77-0x000000000041EBD0-mapping.dmp

Download
memory/792-80-0x00000000008C0000-0x0000000000BC3000-memory.dmp

Filesize
3.0MB

Download
memory/792-81-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/792-79-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/916-88-0x0000000000000000-mapping.dmp

Download
memory/988-83-0x0000000000000000-mapping.dmp

Download
memory/988-85-0x00000000002D0000-0x00000000002EF000-memory.dmp

Filesize
124KB

Download
memory/988-87-0x00000000020F0000-0x00000000023F3000-memory.dmp

Filesize
3.0MB

Download
memory/988-86-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/988-89-0x0000000000370000-0x0000000000403000-memory.dmp

Filesize
588KB

Download
memory/1200-82-0x00000000074C0000-0x000000000763B000-memory.dmp

Filesize
1.5MB

Download
memory/1200-90-0x0000000008010000-0x000000000816E000-memory.dmp

Filesize
1.4MB

Download
memory/1984-61-0x0000000074F30000-0x0000000074F3A000-memory.dmp

Filesize
40KB

Download
memory/1984-60-0x00000000766D1000-0x00000000766D3000-memory.dmp

Filesize
8KB

Download
memory/1984-59-0x0000000000000000-mapping.dmp

Download
memory/1984-62-0x0000000074F31000-0x0000000074F37000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads