formbook | a106bd015a486b2e0c147b968a3c1616d229290ae520c8b4aeb83b64e6d0a710

Analysis

max time kernel
56s
max time network
50s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
14-01-2025 22:13

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General

Target

a106bd015a486b2e0c147b968a3c1616d229290ae520c8b4aeb83b64e6d0a710.xlsx
Size

1.8MB
MD5

0bb753c9d76544c518ebb5d209108266
SHA1

1a7e7c5044c842e03687f576005bd43d48862ebb
SHA256

a106bd015a486b2e0c147b968a3c1616d229290ae520c8b4aeb83b64e6d0a710
SHA512

21f7ac9b14f16fd758df420c25b952cd1b699c250904781c43ce7080801fefb4dd814c3ee7a30b4a7981deebdcb4fcbc72247fd2c6982be051635bee8565eba7
SSDEEP

49152:kTiDS2iZYJTg+uFfcdD+3GkdQFzhccnYmmAQdC:kmugO+6fV3GkdQdnhD

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 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2828-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2828-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1756-19-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	572	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2968	word.exe

Loads dropped DLL 1 IoCs

pid	Process
572	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016b47-6.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2828	2968	word.exe	34
PID 2828 set thread context of 1144	2828	svchost.exe	20
PID 2828 set thread context of 1144	2828	svchost.exe	20
PID 1756 set thread context of 1144	1756	chkdsk.exe	20

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	chkdsk.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 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.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
572	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2100	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe
1756	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2968	word.exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
1756	chkdsk.exe
1756	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	svchost.exe
Token: SeDebugPrivilege	1756	chkdsk.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2968	word.exe
2968	word.exe
1144	Explorer.EXE
1144	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2968	word.exe
2968	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2100	EXCEL.EXE
2100	EXCEL.EXE
2100	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 572 wrote to memory of 2968	572	EQNEDT32.EXE	33
PID 572 wrote to memory of 2968	572	EQNEDT32.EXE	33
PID 572 wrote to memory of 2968	572	EQNEDT32.EXE	33
PID 572 wrote to memory of 2968	572	EQNEDT32.EXE	33
PID 2968 wrote to memory of 2828	2968	word.exe	34
PID 2968 wrote to memory of 2828	2968	word.exe	34
PID 2968 wrote to memory of 2828	2968	word.exe	34
PID 2968 wrote to memory of 2828	2968	word.exe	34
PID 2968 wrote to memory of 2828	2968	word.exe	34
PID 1144 wrote to memory of 1756	1144	Explorer.EXE	61
PID 1144 wrote to memory of 1756	1144	Explorer.EXE	61
PID 1144 wrote to memory of 1756	1144	Explorer.EXE	61
PID 1144 wrote to memory of 1756	1144	Explorer.EXE	61
PID 1756 wrote to memory of 1956	1756	chkdsk.exe	62
PID 1756 wrote to memory of 1956	1756	chkdsk.exe	62
PID 1756 wrote to memory of 1956	1756	chkdsk.exe	62
PID 1756 wrote to memory of 1956	1756	chkdsk.exe	62

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1144
- 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\a106bd015a486b2e0c147b968a3c1616d229290ae520c8b4aeb83b64e6d0a710.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2100
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:568
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2420
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2884
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2880
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2752
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2824
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2704
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2700
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2720
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2384
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2748
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2772
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2784
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1048
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2432
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1060
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1204
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2136
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2292
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:808
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:728
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1868
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:376
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:920
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1908
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1808
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1956

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:572
- 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:2968
- - 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:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.7MB

MD5
00d95adc7ca2126d416fb70f2fae82f3

SHA1
363ec117e50cf867ba5b8b254eee2648d571466b

SHA256
7981d6c23a9624544c9610e2cfe5de81a0abfc9022efbd2ff0a514a7be98b93a

SHA512
d4d9c81b40aecb71e470c50f2f7d0a26a844d0a0dfc154f51684301d9466137a95df89e756c5732902e84a2a873f76c09b7e61c55ca4f5fc9b7538aaa3f4be8b

Download Submit
memory/1144-23-0x0000000007C30000-0x0000000007DBD000-memory.dmp

Filesize
1.6MB

Download
memory/1756-18-0x0000000000810000-0x0000000000817000-memory.dmp

Filesize
28KB

Download
memory/1756-19-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2100-1-0x000000007252D000-0x0000000072538000-memory.dmp

Filesize
44KB

Download
memory/2100-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2100-15-0x000000007252D000-0x0000000072538000-memory.dmp

Filesize
44KB

Download
memory/2828-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2828-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download