formbook | b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93a

General

Target

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
Size

590KB
MD5

9670e05fd8e4a6fb0b5db5436c3832a0
SHA1

1a77ac485ab8271b77c7a5e31aa7aae84ab936f8
SHA256

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93a
SHA512

d74e47e8fcb1c1029d06403c867774dbc563050d24326b83915467f6bb71f7e40cf2656ae839db35802c9aac0e7c7d1fe8c9476a8ef98292b55702b76ef490fb
SSDEEP

12288:Uh8bQbrxKlcjdOliPwsSpRYAKrgCqZKVvsABefO5fw:U+I9kiPqR/04KCABem

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

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

Processes:

resource	yara_rule
behavioral1/memory/2756-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

Processes:

powershell.exe

pid	Process
3052	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

description	pid	Process	procid_target
PID 2904 set thread context of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exepowershell.exe

pid	Process
2756	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
3052	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description	pid	Process
Token: SeDebugPrivilege	3052	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

description	pid	Process	procid_target
PID 2904 wrote to memory of 3052	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	30
PID 2904 wrote to memory of 3052	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	30
PID 2904 wrote to memory of 3052	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	30
PID 2904 wrote to memory of 3052	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	30
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32
PID 2904 wrote to memory of 2756	2904	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	32

C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
"C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3052
- C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
  "C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

memory/2756-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-17-0x0000000000800000-0x0000000000B03000-memory.dmp

Filesize
3.0MB

Download
memory/2756-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2904-3-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download
memory/2904-6-0x0000000000C00000-0x0000000000C76000-memory.dmp

Filesize
472KB

Download
memory/2904-5-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-4-0x0000000073DCE000-0x0000000073DCF000-memory.dmp

Filesize
4KB

Download
memory/2904-0-0x0000000073DCE000-0x0000000073DCF000-memory.dmp

Filesize
4KB

Download
memory/2904-2-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-14-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-1-0x00000000013D0000-0x000000000146A000-memory.dmp

Filesize
616KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads