formbook | 13441db4f2c8574a8d90d1b5167b1f4b81bbdcd77a1e0ba44517017874d02618

General

Target

13441db4f2c8574a8d90d1b5167b1f4b81bbdcd77a1e0ba44517017874d02618.xlsx
Size

1.3MB
MD5

0d5d79a8b715e13a26e6579f1d47c0d7
SHA1

408402dcc517ab7be7957ff867b7464cc1465334
SHA256

13441db4f2c8574a8d90d1b5167b1f4b81bbdcd77a1e0ba44517017874d02618
SHA512

d2642be20a3f7114ee1caec6253caebdb213709590ba14051391eb72f0f10018fa634db5ff735a88e9ff2aefdf5af208bd3cadb5b2dec070bee8bbd7decded05
SSDEEP

24576:KngpIDsJ34JbFQ4YBolrs08Qt/horbWgMhSpA6+jzfievtzAQSX1:KnYmscQ4goBsmYBMkuNjm4tuX1

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/2740-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2832-18-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	2348	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2760	word.exe

Loads dropped DLL 1 IoCs

pid	Process
2348	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016644-6.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 2740	2760	word.exe	33
PID 2740 set thread context of 1192	2740	svchost.exe	21
PID 2832 set thread context of 1192	2832	msiexec.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	msiexec.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
2348	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2356	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2740	svchost.exe
2740	svchost.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe
2832	msiexec.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2760	word.exe
2740	svchost.exe
2740	svchost.exe
2740	svchost.exe
2832	msiexec.exe
2832	msiexec.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2740	svchost.exe
Token: SeDebugPrivilege	2832	msiexec.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2760	word.exe
2760	word.exe
1192	Explorer.EXE
1192	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2760	word.exe
2760	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2760	2348	EQNEDT32.EXE	32
PID 2348 wrote to memory of 2760	2348	EQNEDT32.EXE	32
PID 2348 wrote to memory of 2760	2348	EQNEDT32.EXE	32
PID 2348 wrote to memory of 2760	2348	EQNEDT32.EXE	32
PID 2760 wrote to memory of 2740	2760	word.exe	33
PID 2760 wrote to memory of 2740	2760	word.exe	33
PID 2760 wrote to memory of 2740	2760	word.exe	33
PID 2760 wrote to memory of 2740	2760	word.exe	33
PID 2760 wrote to memory of 2740	2760	word.exe	33
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2832	1192	Explorer.EXE	34
PID 2832 wrote to memory of 2904	2832	msiexec.exe	35
PID 2832 wrote to memory of 2904	2832	msiexec.exe	35
PID 2832 wrote to memory of 2904	2832	msiexec.exe	35
PID 2832 wrote to memory of 2904	2832	msiexec.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1192
- 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\13441db4f2c8574a8d90d1b5167b1f4b81bbdcd77a1e0ba44517017874d02618.xlsx
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2356
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.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:2832
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2904

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:2348
- 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:2760
- - 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:2740

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
1.7MB

MD5
9746b0e34b3a2048074caf932a112cc1

SHA1
340bca56d23ea75d9e3e8e1e15b9a9bf8b051ef8

SHA256
346d6afdb252d251ce95155e05789adf73f55994f94687286dc4a0fa95327090

SHA512
0d628f7e5cd6f591a80a6b5d40e9b576bd9626b8e929802930c45e47156fe37669dd5989d6d0976ff4a720bf6ac8202dce51284e5e41c79b0164bdf183d8ab14

Download Submit
memory/1192-24-0x0000000005110000-0x0000000005288000-memory.dmp

Filesize
1.5MB

Download
memory/2356-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2356-1-0x000000007299D000-0x00000000729A8000-memory.dmp

Filesize
44KB

Download
memory/2356-19-0x000000007299D000-0x00000000729A8000-memory.dmp

Filesize
44KB

Download
memory/2740-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2832-15-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/2832-17-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/2832-18-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download

Analysis

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