formbook | 63e3b4304b855b3219c28b8d5306241564ac5f1752a01b5b793ee7733b4c69a7

General

Target

4azjP1pzssf79mP.exe
Size

632KB
MD5

44e15810a7cc4c85a45c0d786e795904
SHA1

6a13dd37d6ab5a44c4ecdc602a8175d32ade0450
SHA256

63e3b4304b855b3219c28b8d5306241564ac5f1752a01b5b793ee7733b4c69a7
SHA512

7702302ec0a34ee53e3084a98f23f2af241c70f2c74eb08da948a95a0e9a8cbfacb27e76f7e3175f85b9e88da4d80fced80aafdf1d2739dfce28bee99864650b
SSDEEP

12288:wunSY+aZrwrLxdgGs2oPDNDZsS00YykWQ0F3ytl2In54Ci8wzk:n/4rLzgGsRBDZBkWQ0F35InfiR

Score

10^/10

formbook v15n discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

v15n

Decoy

dyahwoahjuk.store

toysstorm.com

y7rak9.com

2222233p6.shop

betbox2341.com

visualvarta.com

nijssenadventures.com

main-12.site

leng4d.net

kurainu.xyz

hatesa.xyz

culturamosaica.com

supermallify.store

gigboard.app

rxforgive.com

ameliestones.com

kapalwin.live

tier.credit

sobol-ksa.com

faredeal.online

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2716-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2716-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2716-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2860-28-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
3068	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2716 set thread context of 1196	2716	4azjP1pzssf79mP.exe	21
PID 2716 set thread context of 1196	2716	4azjP1pzssf79mP.exe	21
PID 2860 set thread context of 1196	2860	msdt.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	4azjP1pzssf79mP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2716	4azjP1pzssf79mP.exe
2716	4azjP1pzssf79mP.exe
2716	4azjP1pzssf79mP.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe
2860	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2716	4azjP1pzssf79mP.exe
2716	4azjP1pzssf79mP.exe
2716	4azjP1pzssf79mP.exe
2716	4azjP1pzssf79mP.exe
2860	msdt.exe
2860	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2716	4azjP1pzssf79mP.exe
Token: SeDebugPrivilege	2860	msdt.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 2524 wrote to memory of 2716	2524	4azjP1pzssf79mP.exe	31
PID 1196 wrote to memory of 2860	1196	Explorer.EXE	32
PID 1196 wrote to memory of 2860	1196	Explorer.EXE	32
PID 1196 wrote to memory of 2860	1196	Explorer.EXE	32
PID 1196 wrote to memory of 2860	1196	Explorer.EXE	32
PID 2860 wrote to memory of 3068	2860	msdt.exe	33
PID 2860 wrote to memory of 3068	2860	msdt.exe	33
PID 2860 wrote to memory of 3068	2860	msdt.exe	33
PID 2860 wrote to memory of 3068	2860	msdt.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\4azjP1pzssf79mP.exe
  "C:\Users\Admin\AppData\Local\Temp\4azjP1pzssf79mP.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Users\Admin\AppData\Local\Temp\4azjP1pzssf79mP.exe
    "C:\Users\Admin\AppData\Local\Temp\4azjP1pzssf79mP.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2716
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:2860
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\4azjP1pzssf79mP.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1196-20-0x0000000005080000-0x0000000005163000-memory.dmp

Filesize
908KB

Download
memory/1196-31-0x0000000006EF0000-0x000000000702D000-memory.dmp

Filesize
1.2MB

Download
memory/1196-25-0x0000000006EF0000-0x000000000702D000-memory.dmp

Filesize
1.2MB

Download
memory/2524-5-0x0000000000510000-0x000000000051E000-memory.dmp

Filesize
56KB

Download
memory/2524-15-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-0-0x000000007495E000-0x000000007495F000-memory.dmp

Filesize
4KB

Download
memory/2524-6-0x0000000005060000-0x00000000050D6000-memory.dmp

Filesize
472KB

Download
memory/2524-1-0x0000000000F30000-0x0000000000FD4000-memory.dmp

Filesize
656KB

Download
memory/2524-2-0x00000000004A0000-0x00000000004B2000-memory.dmp

Filesize
72KB

Download
memory/2524-3-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-4-0x00000000004F0000-0x00000000004FA000-memory.dmp

Filesize
40KB

Download
memory/2716-16-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download
memory/2716-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2716-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2716-19-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/2716-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-24-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/2716-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2716-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2716-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2860-26-0x00000000007F0000-0x00000000008E4000-memory.dmp

Filesize
976KB

Download
memory/2860-27-0x00000000007F0000-0x00000000008E4000-memory.dmp

Filesize
976KB

Download
memory/2860-28-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing