formbook | 5859508ecc59571d71bed688f36f5ce3366b0f4a4f59566f0fc2014f8c277d3d

General

Target

2.xlsx
Size

1.8MB
MD5

12c9bfe6cd73a3a6da2db29e0a548f8e
SHA1

6a9a647753681a6056686f7c800f8b41506e1dcf
SHA256

5859508ecc59571d71bed688f36f5ce3366b0f4a4f59566f0fc2014f8c277d3d
SHA512

231f4220234fc76e217f421bd8215cd43238dc3b05e223c2af331b99509d1a67741c37c7224fffb200b4427c4315d6353fc3e3ef2c1ebe99750b89d1da959fc3
SSDEEP

49152:8ZLyOfkDNsweTKJxn3IFT7yzeCUrDTBOXcV+02In9tQ:8ZLyOcD6wDh4Vc0ToXcU/W9tQ

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/2992-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2928-26-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	2528	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3008	word.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x000700000001921d-6.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3008 set thread context of 2992	3008	word.exe	33
PID 2992 set thread context of 1184	2992	svchost.exe	21
PID 2928 set thread context of 1184	2928	wininit.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	EXCEL.EXE
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	wininit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2528	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2636	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2992	svchost.exe
2992	svchost.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe
2928	wininit.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3008	word.exe
2992	svchost.exe
2992	svchost.exe
2992	svchost.exe
2928	wininit.exe
2928	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	svchost.exe
Token: SeDebugPrivilege	2928	wininit.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3008	word.exe
3008	word.exe
1184	Explorer.EXE
1184	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3008	word.exe
3008	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2636	EXCEL.EXE
2636	EXCEL.EXE
2636	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 3008	2528	EQNEDT32.EXE	32
PID 2528 wrote to memory of 3008	2528	EQNEDT32.EXE	32
PID 2528 wrote to memory of 3008	2528	EQNEDT32.EXE	32
PID 2528 wrote to memory of 3008	2528	EQNEDT32.EXE	32
PID 3008 wrote to memory of 2992	3008	word.exe	33
PID 3008 wrote to memory of 2992	3008	word.exe	33
PID 3008 wrote to memory of 2992	3008	word.exe	33
PID 3008 wrote to memory of 2992	3008	word.exe	33
PID 3008 wrote to memory of 2992	3008	word.exe	33
PID 1184 wrote to memory of 2928	1184	Explorer.EXE	34
PID 1184 wrote to memory of 2928	1184	Explorer.EXE	34
PID 1184 wrote to memory of 2928	1184	Explorer.EXE	34
PID 1184 wrote to memory of 2928	1184	Explorer.EXE	34
PID 2928 wrote to memory of 2692	2928	wininit.exe	36
PID 2928 wrote to memory of 2692	2928	wininit.exe	36
PID 2928 wrote to memory of 2692	2928	wininit.exe	36
PID 2928 wrote to memory of 2692	2928	wininit.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1184
- 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\2.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2636
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.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:2928
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2692

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:2528
- 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:3008
- - 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:2992

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

Replay Monitor

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Downloads

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

Filesize
1.4MB

MD5
b96e6785937bd52b1281fb98f0abcf25

SHA1
d27572ada589769bfdb99dabbd485556e39010ba

SHA256
519678c24f6036d935bdd915090f07ad1fea068dc2491861648c6b00698de514

SHA512
39aadf908dcbb16588e5a93f7c633224d3ba7aa3bed54ae96e3fb9320fc080b6da7987b8d66d279266045b1aaafc1788b47bb72558ff42371acd55e8f768304d

Download Submit
memory/1184-31-0x00000000083A0000-0x0000000008502000-memory.dmp

Filesize
1.4MB

Download
memory/2636-1-0x000000007258D000-0x0000000072598000-memory.dmp

Filesize
44KB

Download
memory/2636-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2636-27-0x000000007258D000-0x0000000072598000-memory.dmp

Filesize
44KB

Download
memory/2928-25-0x0000000000A80000-0x0000000000A9A000-memory.dmp

Filesize
104KB

Download
memory/2928-26-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2992-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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