formbook | 8447a77109db948caf2aeab8f22ecffb5fb15a83286c7894b0d9a06c48ed3e73

General

Target

8447a77109db948caf2aeab8f22ecffb5fb15a83286c7894b0d9a06c48ed3e73.xlsx
Size

1.1MB
MD5

61b68ed859f55e970b3b4b49e6aa3890
SHA1

0621ceca3448c427848777e383c9b9d9549fde21
SHA256

8447a77109db948caf2aeab8f22ecffb5fb15a83286c7894b0d9a06c48ed3e73
SHA512

1ead6f9dc9428d47aa9419dc6ba1c2f753806b93df893114e3baf06c067c78667b4ccb37af5554f626ddc84dd91ab21025346243df9cb6c9d34485b537b7a11f
SSDEEP

24576:DxmdOBUO2GqbAq+zyFGbTgV/S9MLk2zP38rkwuX+au+H:lnq8qGoIgGck2roNuX++

Score

10^/10

formbook hwu6 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hwu6

Decoy

lf758.vip

locerin-hair.shop

vytech.net

pet-insurance-intl-7990489.live

thepolithat.buzz

d66dr114gl.bond

suv-deals-49508.bond

job-offer-53922.bond

drstone1.click

lebahsemesta57.click

olmanihousel.shop

piedmontcsb.info

trisula888x.top

66sodovna.net

dental-implants-83810.bond

imxtld.club

frozenpines.net

ffgzgbl.xyz

tlc7z.rest

alexismuller.design

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/3008-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2856-24-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	2388	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2904	word.exe

Loads dropped DLL 1 IoCs

pid	Process
2388	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016fe5-6.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 3008	2904	word.exe	34
PID 3008 set thread context of 1272	3008	svchost.exe	21
PID 2856 set thread context of 1272	2856	rundll32.exe	21

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	word.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
2388	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1740	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3008	svchost.exe
3008	svchost.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe
2856	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2904	word.exe
3008	svchost.exe
3008	svchost.exe
3008	svchost.exe
2856	rundll32.exe
2856	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	svchost.exe
Token: SeDebugPrivilege	2856	rundll32.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2904	word.exe
2904	word.exe
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2904	word.exe
2904	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1740	EXCEL.EXE
1740	EXCEL.EXE
1740	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2904	2388	EQNEDT32.EXE	33
PID 2388 wrote to memory of 2904	2388	EQNEDT32.EXE	33
PID 2388 wrote to memory of 2904	2388	EQNEDT32.EXE	33
PID 2388 wrote to memory of 2904	2388	EQNEDT32.EXE	33
PID 2904 wrote to memory of 3008	2904	word.exe	34
PID 2904 wrote to memory of 3008	2904	word.exe	34
PID 2904 wrote to memory of 3008	2904	word.exe	34
PID 2904 wrote to memory of 3008	2904	word.exe	34
PID 2904 wrote to memory of 3008	2904	word.exe	34
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 1272 wrote to memory of 2856	1272	Explorer.EXE	35
PID 2856 wrote to memory of 2732	2856	rundll32.exe	36
PID 2856 wrote to memory of 2732	2856	rundll32.exe	36
PID 2856 wrote to memory of 2732	2856	rundll32.exe	36
PID 2856 wrote to memory of 2732	2856	rundll32.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1272
- 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\8447a77109db948caf2aeab8f22ecffb5fb15a83286c7894b0d9a06c48ed3e73.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:1740
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2732

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
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Users\Admin\AppData\Roaming\word.exe
  C:\Users\Admin\AppData\Roaming\word.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\SysWOW64\svchost.exe
    C:\Users\Admin\AppData\Roaming\word.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\word.exe

Filesize
1.5MB

MD5
ddd4ecb564dd7d7c2e8dbe9905761fad

SHA1
626978bb4983ddea34ed201cb087f4b4a2f473d0

SHA256
bcb042c1a244dc54712c64832723db18ae70fd0bb1823b962cdc5e80d5f818ab

SHA512
26fded5aa0cc7df2c85a43855cee13a2674fab17a1c8e5d7c10a015ef9491bce37c89e1671935f22f4df7e6d27f840ed5aee44828af06e96edbdcdfcd6ce3f5b

Download Submit
memory/1272-19-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1272-27-0x00000000050B0000-0x0000000005185000-memory.dmp

Filesize
852KB

Download
memory/1740-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1740-1-0x000000007286D000-0x0000000072878000-memory.dmp

Filesize
44KB

Download
memory/1740-20-0x000000007286D000-0x0000000072878000-memory.dmp

Filesize
44KB

Download
memory/2856-21-0x0000000000570000-0x000000000057E000-memory.dmp

Filesize
56KB

Download
memory/2856-23-0x0000000000570000-0x000000000057E000-memory.dmp

Filesize
56KB

Download
memory/2856-24-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/3008-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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