formbook | eb75ef667ea9c9bccc8ad8b121fc01cf37027441b1bd0271e7eb6ccc064dc925

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 00:37

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General

Target

formbook.exe
Size

181KB
MD5

ab063fa349f25116b15276ad1e2251d7
SHA1

ddcdf4314f2c187d04a066380d97959e62c34dbd
SHA256

dc769e89feccc886334377b01f29dfe4b36c3266c2df8c88ca704919d0b1b938
SHA512

98abbe10c466b8798093963a479fd8bffcc8027feb2be361a092a98ea32f4960a1dc0e14bbd606752db3950fdb84b17763c81db6911390c88c91fbbacb56687c
SSDEEP

3072:/qpUoiXhkew9hCgu9gbxNkqqh7vIu+fiL2+TLmym/yyA2jh:Dxtw6gOuxaqqh7+aKsCymqHwh

Score

10^/10

formbook zvf discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

zvf

Decoy

slimytrout.com

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pennystanwayart.com

auliawijayadecor.com

iyundun.com

postforearn.com

xn--4dbaigbvbe5b1a.net

fishhousemarketandgrill.com

cqweb8.com

serverauthcheckmate.com

betterulasy.com

karenhoverrealtor.com

etigia.com

yinggehong.com

brandprtex.net

pusatcpanel.com

reidec.com

ajscghy.com

tvdajiang6.com

freightlogins.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2572-2-0x00000000000F0000-0x000000000011E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2040	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2572 set thread context of 1408	2572	formbook.exe	21
PID 2056 set thread context of 1408	2056	wlanext.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2572	formbook.exe
2572	formbook.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2572	formbook.exe
2572	formbook.exe
2572	formbook.exe
2056	wlanext.exe
2056	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2572	formbook.exe
Token: SeDebugPrivilege	2056	wlanext.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 2056	1408	Explorer.EXE	31
PID 1408 wrote to memory of 2056	1408	Explorer.EXE	31
PID 1408 wrote to memory of 2056	1408	Explorer.EXE	31
PID 1408 wrote to memory of 2056	1408	Explorer.EXE	31
PID 2056 wrote to memory of 2040	2056	wlanext.exe	32
PID 2056 wrote to memory of 2040	2056	wlanext.exe	32
PID 2056 wrote to memory of 2040	2056	wlanext.exe	32
PID 2056 wrote to memory of 2040	2056	wlanext.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Users\Admin\AppData\Local\Temp\formbook.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:2056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1408-3-0x0000000003AC0000-0x0000000003CC0000-memory.dmp

Filesize
2.0MB

Download
memory/1408-4-0x0000000006910000-0x0000000006A03000-memory.dmp

Filesize
972KB

Download
memory/1408-8-0x0000000006910000-0x0000000006A03000-memory.dmp

Filesize
972KB

Download
memory/2056-5-0x0000000000DC0000-0x0000000000DD6000-memory.dmp

Filesize
88KB

Download
memory/2056-7-0x0000000000DC0000-0x0000000000DD6000-memory.dmp

Filesize
88KB

Download
memory/2572-0-0x0000000000780000-0x0000000000A83000-memory.dmp

Filesize
3.0MB

Download
memory/2572-2-0x00000000000F0000-0x000000000011E000-memory.dmp

Filesize
184KB

Download
memory/2572-1-0x000000000010E000-0x000000000010F000-memory.dmp

Filesize
4KB

Download