formbook | 4c29ecf0655519c8700f3392a1c2c962b523e9de0d34190b7d85e6c35d731bf2

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2025, 07:49

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General

Target

4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
Size

1.0MB
MD5

7219e991b1a4822c91639c242baed0fe
SHA1

b30d7f1a38efe698d5a94fa9c70b6e3f21f8439c
SHA256

4c29ecf0655519c8700f3392a1c2c962b523e9de0d34190b7d85e6c35d731bf2
SHA512

330a786b1a7ecaf849761ff9f1b9959e0b572bf7efc7328dc048b9b5cb8b7342f0f1d7fad2a97fe4f25204cb21a218271f7128202f44189bae18865d32f02e87
SSDEEP

24576:YAHnh+eWsN3skA4RV1Hom2KXMmHaMid+s8N5:fh+ZkldoPK8YaM3H

Score

10^/10

formbook as02 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

as02

Decoy

qwin777.com

robinhoods.live

h3jh-dal.pics

braindeadcopywriting.com

kktcbet1000.com

mpo0463.cfd

raboteshoes.com

ab1718.com

lowcrusiers.com

gregcopelandmusic.com

dkfndch.store

firstclassuni.com

00ewu1ub.com

shunweichemical.com

sugarits.com

marqify.com

mistmajik.com

trezip.online

tinytables.xyz

suestergocoaching.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3052-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3052-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4716-20-0x0000000000620000-0x000000000064F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3192 set thread context of 3052	3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe	83
PID 3052 set thread context of 3540	3052	svchost.exe	56
PID 4716 set thread context of 3540	4716	rundll32.exe	56

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	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3052	svchost.exe
3052	svchost.exe
3052	svchost.exe
3052	svchost.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe
4716	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
3052	svchost.exe
3052	svchost.exe
3052	svchost.exe
4716	rundll32.exe
4716	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	svchost.exe
Token: SeDebugPrivilege	4716	rundll32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3192 wrote to memory of 3052	3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe	83
PID 3192 wrote to memory of 3052	3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe	83
PID 3192 wrote to memory of 3052	3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe	83
PID 3192 wrote to memory of 3052	3192	4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe	83
PID 3540 wrote to memory of 4716	3540	Explorer.EXE	84
PID 3540 wrote to memory of 4716	3540	Explorer.EXE	84
PID 3540 wrote to memory of 4716	3540	Explorer.EXE	84
PID 4716 wrote to memory of 3120	4716	rundll32.exe	86
PID 4716 wrote to memory of 3120	4716	rundll32.exe	86
PID 4716 wrote to memory of 3120	4716	rundll32.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe
  "C:\Users\Admin\AppData\Local\Temp\4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3192
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\4C29ECF0655519C8700F3392A1C2C962B523E9DE0D34190B7D85E6C35D731BF2.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3052
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:4716
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/3052-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-12-0x0000000001600000-0x000000000194A000-memory.dmp

Filesize
3.3MB

Download
memory/3052-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-15-0x0000000001A60000-0x0000000001A75000-memory.dmp

Filesize
84KB

Download
memory/3192-10-0x0000000000A40000-0x0000000000A44000-memory.dmp

Filesize
16KB

Download
memory/3540-21-0x00000000087C0000-0x00000000088D0000-memory.dmp

Filesize
1.1MB

Download
memory/3540-16-0x00000000087C0000-0x00000000088D0000-memory.dmp

Filesize
1.1MB

Download
memory/3540-25-0x0000000002EB0000-0x0000000002F71000-memory.dmp

Filesize
772KB

Download
memory/3540-26-0x0000000002EB0000-0x0000000002F71000-memory.dmp

Filesize
772KB

Download
memory/3540-28-0x0000000002EB0000-0x0000000002F71000-memory.dmp

Filesize
772KB

Download
memory/4716-17-0x0000000000AD0000-0x0000000000AE4000-memory.dmp

Filesize
80KB

Download
memory/4716-19-0x0000000000AD0000-0x0000000000AE4000-memory.dmp

Filesize
80KB

Download
memory/4716-20-0x0000000000620000-0x000000000064F000-memory.dmp

Filesize
188KB

Download