formbook | eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2

General

Target

eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe
Size

637KB
MD5

d44cbc7808ef4ca0e9007ed7812ac54c
SHA1

3562886c50d64e72079e0bad936c065027acb6f1
SHA256

eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2
SHA512

6c256b5c66177a5dee6bc769c8fa782834feefdc584beeb503f89e0cedbc23a88dd98976774f0839765efeb137b1a87ffb71ff36659e560777f33601340816f4
SSDEEP

12288:WdwwoIc0QIH2j0ocLX6NBxa3+SYOhAbp8FCTzcDxuN+wsv5/s2cxkOxW/t+BA:WywoIc0QIH2EiBcPQTTzIuN+vv5ixW/e

Score

10^/10

formbook by21 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

by21

Decoy

digitalillusions.net

changeblue25.com

kitchenwoow.com

grupocontigoalimentacion.com

iranabr.com

embodiedmagic.com

superstoreszone.com

apartments-for-rent-46883.bond

kelbagnole.com

rideskratchlab.com

a06kng.club

saddlebredallstars.xyz

filepd.com

kxetdf.asia

dl39yy.com

jackedsearch.com

exodusprofessionaldetailing.com

ecommerce-40144.bond

uh3b94g3pyczi9t.skin

dcmcc635i.xyz

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2172-15-0x0000000000400000-0x000000000042F000-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

pid	Process
860	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2172	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe
860	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 860	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	31
PID 3012 wrote to memory of 860	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	31
PID 3012 wrote to memory of 860	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	31
PID 3012 wrote to memory of 860	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	31
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32
PID 3012 wrote to memory of 2172	3012	eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe	32

C:\Users\Admin\AppData\Local\Temp\eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe
"C:\Users\Admin\AppData\Local\Temp\eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- 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\eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:860
- C:\Users\Admin\AppData\Local\Temp\eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe
  "C:\Users\Admin\AppData\Local\Temp\eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2172

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/2172-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-17-0x0000000000830000-0x0000000000B33000-memory.dmp

Filesize
3.0MB

Download
memory/2172-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-3-0x00000000004D0000-0x00000000004E4000-memory.dmp

Filesize
80KB

Download
memory/3012-6-0x0000000000690000-0x000000000069A000-memory.dmp

Filesize
40KB

Download
memory/3012-7-0x00000000006A0000-0x00000000006AE000-memory.dmp

Filesize
56KB

Download
memory/3012-8-0x0000000004970000-0x00000000049E6000-memory.dmp

Filesize
472KB

Download
memory/3012-5-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Filesize
6.9MB

Download
memory/3012-4-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/3012-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/3012-2-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Filesize
6.9MB

Download
memory/3012-16-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Filesize
6.9MB

Download
memory/3012-1-0x0000000000D30000-0x0000000000DD6000-memory.dmp

Filesize
664KB

Download

Analysis

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