formbook | b55514140eae59c1165c37832add73bc70bcdae99064f0db4d367489d3686b79

General

Target

b55514140eae59c1165c37832add73bc70bcdae99064f0db4d367489d3686b79.xlsx
Size

1.6MB
MD5

fc26e7a21f30220ba8d15d1353cd8900
SHA1

5cb3ad06056613737a92fda431150323c5d031e0
SHA256

b55514140eae59c1165c37832add73bc70bcdae99064f0db4d367489d3686b79
SHA512

47f321ab48ea88f6dd736f3b449b8d3594b066768d299db247a68ce979e1a71b4528a83c65c7695ee7825e2bed0a0fcfe77478b9b4b4558005adda7e54f5a147
SSDEEP

24576:Y/uZZwwdADajS+sAlVQtGsm07Z5bjycbd8tWLDa3+Fq5kkYRHQK2i4977LWhovBF:PZXW+s3GTGZ53R7L8K+97HXzc22w

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/2860-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2668-26-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1780	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2564	word.exe

Loads dropped DLL 1 IoCs

pid	Process
1780	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x00070000000173fb-6.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2564 set thread context of 2860	2564	word.exe	34
PID 2860 set thread context of 1224	2860	svchost.exe	21
PID 2668 set thread context of 1224	2668	colorcpl.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	word.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	colorcpl.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

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
1780	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2308	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2860	svchost.exe
2860	svchost.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe
2668	colorcpl.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2564	word.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2668	colorcpl.exe
2668	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	svchost.exe
Token: SeDebugPrivilege	2668	colorcpl.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2564	word.exe
2564	word.exe
1224	Explorer.EXE
1224	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2564	word.exe
2564	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2308	EXCEL.EXE
2308	EXCEL.EXE
2308	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 2564	1780	EQNEDT32.EXE	33
PID 1780 wrote to memory of 2564	1780	EQNEDT32.EXE	33
PID 1780 wrote to memory of 2564	1780	EQNEDT32.EXE	33
PID 1780 wrote to memory of 2564	1780	EQNEDT32.EXE	33
PID 2564 wrote to memory of 2860	2564	word.exe	34
PID 2564 wrote to memory of 2860	2564	word.exe	34
PID 2564 wrote to memory of 2860	2564	word.exe	34
PID 2564 wrote to memory of 2860	2564	word.exe	34
PID 2564 wrote to memory of 2860	2564	word.exe	34
PID 1224 wrote to memory of 2668	1224	Explorer.EXE	35
PID 1224 wrote to memory of 2668	1224	Explorer.EXE	35
PID 1224 wrote to memory of 2668	1224	Explorer.EXE	35
PID 1224 wrote to memory of 2668	1224	Explorer.EXE	35
PID 2668 wrote to memory of 2600	2668	colorcpl.exe	36
PID 2668 wrote to memory of 2600	2668	colorcpl.exe	36
PID 2668 wrote to memory of 2600	2668	colorcpl.exe	36
PID 2668 wrote to memory of 2600	2668	colorcpl.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1224
- 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\b55514140eae59c1165c37832add73bc70bcdae99064f0db4d367489d3686b79.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2308
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.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:2668
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2600

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:1780
- 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:2564
- - 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:2860

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
1.4MB

MD5
2bfe7ecfb7e81b674a54a9fbd4c629c8

SHA1
ba9c02631d58bdc541a678f1e07ec1c9a344e495

SHA256
55caebdee90cda7060b071c1bdeaf05b70fe06bfa64f865ed23bff7359475bd4

SHA512
8e55ec2558bc14ace78b437beb3b719bd25e2ab337c412a72357ce3e04806f6ac261cabab6509d31ad5c6d095f84b7a21fce66fc48b3211ed1c2eb35603ca027

Download Submit
memory/1224-31-0x0000000006B60000-0x0000000006C3A000-memory.dmp

Filesize
872KB

Download
memory/2308-1-0x00000000724ED000-0x00000000724F8000-memory.dmp

Filesize
44KB

Download
memory/2308-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2308-25-0x00000000724ED000-0x00000000724F8000-memory.dmp

Filesize
44KB

Download
memory/2668-24-0x0000000000230000-0x0000000000248000-memory.dmp

Filesize
96KB

Download
memory/2668-26-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/2860-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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