formbook | ff07908a590dec7673c510ec4d0043d8825a54039e35b7c28c299f95c55336c3

General

Target

ff07908a590dec7673c510ec4d0043d8825a54039e35b7c28c299f95c55336c3.xlsx
Size

1.8MB
MD5

d3f593571da9b55237a49f9c23a12d9a
SHA1

b3c9a6ca51802326e7de5a6854199fc369bc3b08
SHA256

ff07908a590dec7673c510ec4d0043d8825a54039e35b7c28c299f95c55336c3
SHA512

114950c12cc9fd0aa50544caed8fa0f710cc596c67ec90d3b5d2e1a72c18b5706b25ef3030949805be0e90bab31d6010fe6b0d1ab090e0651b0254482e113df8
SSDEEP

49152:OwVliPFnflCwADoUpbmepmSTKrks1l4FWQCMsx7/:Ow4dflKxpaepmS2rksiWQJsx7/

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/2976-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2756-17-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2840	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2456	word.exe

Loads dropped DLL 1 IoCs

pid	Process
2840	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000018b54-7.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2456 set thread context of 2976	2456	word.exe	31
PID 2976 set thread context of 1360	2976	svchost.exe	20
PID 2756 set thread context of 1360	2756	netsh.exe	20

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	word.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.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
2840	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2660	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2976	svchost.exe
2976	svchost.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe
2756	netsh.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2456	word.exe
2976	svchost.exe
2976	svchost.exe
2976	svchost.exe
2756	netsh.exe
2756	netsh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	svchost.exe
Token: SeDebugPrivilege	2756	netsh.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2456	word.exe
2456	word.exe
1360	Explorer.EXE
1360	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2456	word.exe
2456	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2660	EXCEL.EXE
2660	EXCEL.EXE
2660	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 2456	2840	EQNEDT32.EXE	30
PID 2840 wrote to memory of 2456	2840	EQNEDT32.EXE	30
PID 2840 wrote to memory of 2456	2840	EQNEDT32.EXE	30
PID 2840 wrote to memory of 2456	2840	EQNEDT32.EXE	30
PID 2456 wrote to memory of 2976	2456	word.exe	31
PID 2456 wrote to memory of 2976	2456	word.exe	31
PID 2456 wrote to memory of 2976	2456	word.exe	31
PID 2456 wrote to memory of 2976	2456	word.exe	31
PID 2456 wrote to memory of 2976	2456	word.exe	31
PID 1360 wrote to memory of 2756	1360	Explorer.EXE	33
PID 1360 wrote to memory of 2756	1360	Explorer.EXE	33
PID 1360 wrote to memory of 2756	1360	Explorer.EXE	33
PID 1360 wrote to memory of 2756	1360	Explorer.EXE	33
PID 2756 wrote to memory of 2708	2756	netsh.exe	34
PID 2756 wrote to memory of 2708	2756	netsh.exe	34
PID 2756 wrote to memory of 2708	2756	netsh.exe	34
PID 2756 wrote to memory of 2708	2756	netsh.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1360
- 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\ff07908a590dec7673c510ec4d0043d8825a54039e35b7c28c299f95c55336c3.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2660
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2880
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\SysWOW64\netsh.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:2756
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2708

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:2840
- 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:2456
- - 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:2976

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

2

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

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

Filesize
1.1MB

MD5
9650e27ba47a06065616315934cb2b9a

SHA1
f98be8ade4e70b74af16ccdce6f46ccc702de247

SHA256
19b58249f470ec0f00032ab3d93e97cb221822f8a7d233038aa8bd0c8d9aab9d

SHA512
10e8cc52ba8044888f1dd259b9ec479eec70102c090a3c42b7afbcd136d1794a34bbf2a66d8a3efb2391ecf787640053d08ade851145aa579eef1d8407152388

Download Submit
memory/1360-15-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1360-23-0x0000000007350000-0x00000000074A3000-memory.dmp

Filesize
1.3MB

Download
memory/2660-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2660-1-0x000000007261D000-0x0000000072628000-memory.dmp

Filesize
44KB

Download
memory/2660-18-0x000000007261D000-0x0000000072628000-memory.dmp

Filesize
44KB

Download
memory/2756-16-0x0000000001780000-0x000000000179B000-memory.dmp

Filesize
108KB

Download
memory/2756-17-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/2976-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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