formbook | 1ebcadef0f2790a5c28cc8d6100007eb6a82a0cf7fc582e7595fa9a3407d3049

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2024, 17:36

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General

Target

$PLUGINSDIR/k5ig8v1xqqd111h.dll
Size

5KB
MD5

fe9e8afe6e228256eaf3065c403d87bb
SHA1

1d46976328242b9e4f37d994bc1f169ee1f4c112
SHA256

e2b161127954eb1373158a95ef083d1b00198fef933e9ad5a1496d82d9006b8b
SHA512

573399e2885f89f05e27de783ef286c79dab04ca4e942f62ccbbb40d61fc7ab80baa97b13948b719dcae785d5daa19e4aa23adb4922e9737e0ecbfc2a09ba4a5
SSDEEP

48:ai7zn1ASkT3zNDZbitP8XGeHJl8gIoq1nh/SSb2+DtMYquSzieL2RuqS:/fn1ASk3NDZ+tSJKgif2otsJzwx

Score

10^/10

formbook dxe discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dxe

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

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
behavioral8/memory/4356-1-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral8/memory/4356-4-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3708 set thread context of 4356	3708	rundll32.exe	83
PID 4356 set thread context of 3416	4356	rundll32.exe	56
PID 2892 set thread context of 3416	2892	NETSTAT.EXE	56

System Location Discovery: System Language Discovery 1 TTPs 4 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2892	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4356	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE
2892	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3708	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe
2892	NETSTAT.EXE
2892	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	rundll32.exe
Token: SeDebugPrivilege	2892	NETSTAT.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3708	2376	rundll32.exe	82
PID 2376 wrote to memory of 3708	2376	rundll32.exe	82
PID 2376 wrote to memory of 3708	2376	rundll32.exe	82
PID 3708 wrote to memory of 4356	3708	rundll32.exe	83
PID 3708 wrote to memory of 4356	3708	rundll32.exe	83
PID 3708 wrote to memory of 4356	3708	rundll32.exe	83
PID 3708 wrote to memory of 4356	3708	rundll32.exe	83
PID 3416 wrote to memory of 2892	3416	Explorer.EXE	84
PID 3416 wrote to memory of 2892	3416	Explorer.EXE	84
PID 3416 wrote to memory of 2892	3416	Explorer.EXE	84
PID 2892 wrote to memory of 1464	2892	NETSTAT.EXE	87
PID 2892 wrote to memory of 1464	2892	NETSTAT.EXE	87
PID 2892 wrote to memory of 1464	2892	NETSTAT.EXE	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\k5ig8v1xqqd111h.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\k5ig8v1xqqd111h.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3708
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\k5ig8v1xqqd111h.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4356
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2892-7-0x0000000000560000-0x000000000056B000-memory.dmp

Filesize
44KB

Download
memory/2892-8-0x0000000000560000-0x000000000056B000-memory.dmp

Filesize
44KB

Download
memory/3416-6-0x0000000008E70000-0x0000000008FFD000-memory.dmp

Filesize
1.6MB

Download
memory/3416-9-0x0000000008E70000-0x0000000008FFD000-memory.dmp

Filesize
1.6MB

Download
memory/3416-13-0x00000000091E0000-0x000000000936F000-memory.dmp

Filesize
1.6MB

Download
memory/3416-14-0x00000000091E0000-0x000000000936F000-memory.dmp

Filesize
1.6MB

Download
memory/3416-16-0x00000000091E0000-0x000000000936F000-memory.dmp

Filesize
1.6MB

Download
memory/3708-0-0x0000000002CF0000-0x0000000002CF2000-memory.dmp

Filesize
8KB

Download
memory/4356-1-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4356-2-0x0000000002CF0000-0x000000000303A000-memory.dmp

Filesize
3.3MB

Download
memory/4356-5-0x0000000002BB0000-0x0000000002BC4000-memory.dmp

Filesize
80KB

Download
memory/4356-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download