formbook | 77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5

Analysis

max time kernel
148s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-11-2024 04:13

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General

Target

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe
Size

1.1MB
MD5

1b279ea4e3f5c082c7ec98c138e86c1c
SHA1

7f4a38dadd8891334f49d07359933d41c8830f67
SHA256

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5
SHA512

e441b8967f27a4f03fd5bbd1140e00394190cb92afd9c4eb3c7076ac50a424ed2102ce3e478f4550f5e3f03cb87f892733703d745637a3cdafe834b1ea4a46ca
SSDEEP

24576:0RmJkcoQricOIQxiZY1iaBPXyiJqQEa7bEw20doU7OiCjNd:RJZoQrbTFZY1iaBPseEw20frid

Score

10^/10

formbook nu01 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

nu01

Decoy

ickleball.codes

avornow.top

rejike.shop

zean.pro

yanbeyan.net

atwithsushi.fun

heimpactphilanthropy.info

ersonal-loans-82514.bond

pringfestpro.xyz

eniorhousings.live

anda-tax.online

d8ul135j.top

nder168.xyz

ealthcare-softwares-my-pl.xyz

7w1q.bond

83167836550.online

etinjo.net

hukira.xyz

ocalip.cloud

cqnh6.digital

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

Processes:

resource	yara_rule
behavioral2/memory/3224-3-0x00000000006C0000-0x00000000006EF000-memory.dmp	formbook
behavioral2/memory/3224-7-0x00000000006C0000-0x00000000006EF000-memory.dmp	formbook
behavioral2/memory/4204-13-0x0000000000970000-0x000000000099F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exesvchost.execmd.exe

description	pid	Process	procid_target
PID 4448 set thread context of 3224	4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe	87
PID 3224 set thread context of 3536	3224	svchost.exe	56
PID 4204 set thread context of 3536	4204	cmd.exe	56

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 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

Processes:

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.execmd.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

Processes:

Explorer.EXE

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

svchost.execmd.exe

pid	Process
3224	svchost.exe
3224	svchost.exe
3224	svchost.exe
3224	svchost.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe
4204	cmd.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exesvchost.execmd.exe

pid	Process
4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe
4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe
3224	svchost.exe
3224	svchost.exe
3224	svchost.exe
4204	cmd.exe
4204	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

svchost.execmd.exe

description	pid	Process
Token: SeDebugPrivilege	3224	svchost.exe
Token: SeDebugPrivilege	4204	cmd.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid	Process
3536	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exeExplorer.EXEcmd.exe

description	pid	Process	procid_target
PID 4448 wrote to memory of 3224	4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe	87
PID 4448 wrote to memory of 3224	4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe	87
PID 4448 wrote to memory of 3224	4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe	87
PID 4448 wrote to memory of 3224	4448	77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe	87
PID 3536 wrote to memory of 4204	3536	Explorer.EXE	88
PID 3536 wrote to memory of 4204	3536	Explorer.EXE	88
PID 3536 wrote to memory of 4204	3536	Explorer.EXE	88
PID 4204 wrote to memory of 2864	4204	cmd.exe	89
PID 4204 wrote to memory of 2864	4204	cmd.exe	89
PID 4204 wrote to memory of 2864	4204	cmd.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Users\Admin\AppData\Local\Temp\77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe
  "C:\Users\Admin\AppData\Local\Temp\77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4448
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\77fa31d14cbf45df9fb36ebe8a7252e18cffca5add1d9a52a601b44367b5aad5.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:4204
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

memory/3224-7-0x00000000006C0000-0x00000000006EF000-memory.dmp

Filesize
188KB

Download
memory/3224-3-0x00000000006C0000-0x00000000006EF000-memory.dmp

Filesize
188KB

Download
memory/3224-6-0x0000000001000000-0x000000000134A000-memory.dmp

Filesize
3.3MB

Download
memory/3224-8-0x00000000015D0000-0x00000000015E5000-memory.dmp

Filesize
84KB

Download
memory/3536-14-0x00000000088A0000-0x0000000008A1D000-memory.dmp

Filesize
1.5MB

Download
memory/3536-9-0x00000000088A0000-0x0000000008A1D000-memory.dmp

Filesize
1.5MB

Download
memory/3536-18-0x0000000008DB0000-0x0000000008EC7000-memory.dmp

Filesize
1.1MB

Download
memory/3536-19-0x0000000008DB0000-0x0000000008EC7000-memory.dmp

Filesize
1.1MB

Download
memory/3536-21-0x0000000008DB0000-0x0000000008EC7000-memory.dmp

Filesize
1.1MB

Download
memory/4204-10-0x00000000002A0000-0x00000000002FA000-memory.dmp

Filesize
360KB

Download
memory/4204-12-0x00000000002A0000-0x00000000002FA000-memory.dmp

Filesize
360KB

Download
memory/4204-13-0x0000000000970000-0x000000000099F000-memory.dmp

Filesize
188KB

Download
memory/4448-2-0x0000000004410000-0x0000000004810000-memory.dmp

Filesize
4.0MB

Download