formbook | be33298d1f2c37b6c2af5a9c36ff335017a1109b8c944826885160c63f8e8b3c

General

Target

89fe909020e532b13c7d0f638556c5f0N.exe
Size

715KB
MD5

89fe909020e532b13c7d0f638556c5f0
SHA1

fe6cb48d3d533fd7897cb468d464196eea7be454
SHA256

be33298d1f2c37b6c2af5a9c36ff335017a1109b8c944826885160c63f8e8b3c
SHA512

e9d6a4bd233d89e9aa0060c3207a86948baec85ed308e336cbbddf7440aa6b20465740e3f573a0d66fb8448fc80b43c2d4789f26ab1f7f8ffd3760fc10e1b3a8
SSDEEP

12288:z2+lR0Rc78rtr/tV/PZO8I3MQLi65E4f/tAZkUy0xyXh1Tl3dLHUOWQhZ:z2+Rc48eMQLi6i03UyEWLR3FHU/

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 payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2884-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2884-15-0x0000000000401000-0x000000000042F000-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

pid	Process
2820	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1716 set thread context of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	89fe909020e532b13c7d0f638556c5f0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2884	89fe909020e532b13c7d0f638556c5f0N.exe
2820	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2820	1716	89fe909020e532b13c7d0f638556c5f0N.exe	30
PID 1716 wrote to memory of 2820	1716	89fe909020e532b13c7d0f638556c5f0N.exe	30
PID 1716 wrote to memory of 2820	1716	89fe909020e532b13c7d0f638556c5f0N.exe	30
PID 1716 wrote to memory of 2820	1716	89fe909020e532b13c7d0f638556c5f0N.exe	30
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31
PID 1716 wrote to memory of 2884	1716	89fe909020e532b13c7d0f638556c5f0N.exe	31

C:\Users\Admin\AppData\Local\Temp\89fe909020e532b13c7d0f638556c5f0N.exe
"C:\Users\Admin\AppData\Local\Temp\89fe909020e532b13c7d0f638556c5f0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- 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\89fe909020e532b13c7d0f638556c5f0N.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Users\Admin\AppData\Local\Temp\89fe909020e532b13c7d0f638556c5f0N.exe
  "C:\Users\Admin\AppData\Local\Temp\89fe909020e532b13c7d0f638556c5f0N.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2884

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

Replay Monitor

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Downloads

memory/1716-6-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/1716-17-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/1716-2-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/1716-3-0x0000000000CB0000-0x0000000000D40000-memory.dmp

Filesize
576KB

Download
memory/1716-4-0x00000000004E0000-0x00000000004F8000-memory.dmp

Filesize
96KB

Download
memory/1716-5-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/1716-1-0x0000000001050000-0x000000000110A000-memory.dmp

Filesize
744KB

Download
memory/1716-7-0x0000000004C30000-0x0000000004CA6000-memory.dmp

Filesize
472KB

Download
memory/1716-0-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/2884-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2884-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2884-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2884-16-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/2884-15-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2884-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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