formbook | 99949de6387b38b04db2ff140d3b98b48d4087a36d62c5ad1feb35ddf513b75c

Analysis

max time kernel
148s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 05:21

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General

Target

Payment advice.exe
Size

1.1MB
MD5

c4df2419b7cf73964d33c01e106bed42
SHA1

710da0825122e74b972e2e9b4e42b62a281957a6
SHA256

54d753e9c1a1f7c5016bcf820b09f7626166de0097478617939ac31995161556
SHA512

d0c2285e1dbbf649651b669dba6f1503664636df8ebd0d51adbb85d8905f191b5f13a69c95d40a28e1af9a3c2afd580531006a86b2a6d44787203121675f9448
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCxmaKktGRHnGCB3xkaFL:7JZoQrbTFZY1iaCNKfRGCVxH

Score

10^/10

formbook c24t discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

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
behavioral2/memory/4852-3-0x00000000004D0000-0x00000000004FF000-memory.dmp	formbook
behavioral2/memory/4852-7-0x00000000004D0000-0x00000000004FF000-memory.dmp	formbook
behavioral2/memory/4852-11-0x00000000004D0000-0x00000000004FF000-memory.dmp	formbook
behavioral2/memory/3184-17-0x0000000000A00000-0x0000000000A2F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 4852	3652	Payment advice.exe	82
PID 4852 set thread context of 3496	4852	svchost.exe	56
PID 4852 set thread context of 3496	4852	svchost.exe	56
PID 3184 set thread context of 3496	3184	chkdsk.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payment advice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe
3184	chkdsk.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
3652	Payment advice.exe
3652	Payment advice.exe
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
4852	svchost.exe
3184	chkdsk.exe
3184	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4852	svchost.exe
Token: SeDebugPrivilege	3184	chkdsk.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 4852	3652	Payment advice.exe	82
PID 3652 wrote to memory of 4852	3652	Payment advice.exe	82
PID 3652 wrote to memory of 4852	3652	Payment advice.exe	82
PID 3652 wrote to memory of 4852	3652	Payment advice.exe	82
PID 3496 wrote to memory of 3184	3496	Explorer.EXE	92
PID 3496 wrote to memory of 3184	3496	Explorer.EXE	92
PID 3496 wrote to memory of 3184	3496	Explorer.EXE	92
PID 3184 wrote to memory of 3708	3184	chkdsk.exe	94
PID 3184 wrote to memory of 3708	3184	chkdsk.exe	94
PID 3184 wrote to memory of 3708	3184	chkdsk.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Users\Admin\AppData\Local\Temp\Payment advice.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment advice.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment advice.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4852
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:208
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:4012
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2496
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2376
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:4280
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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/3184-15-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/3184-17-0x0000000000A00000-0x0000000000A2F000-memory.dmp

Filesize
188KB

Download
memory/3184-16-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/3496-13-0x000000000A8A0000-0x000000000A9C7000-memory.dmp

Filesize
1.2MB

Download
memory/3496-18-0x000000000A8A0000-0x000000000A9C7000-memory.dmp

Filesize
1.2MB

Download
memory/3496-9-0x00000000087F0000-0x0000000008939000-memory.dmp

Filesize
1.3MB

Download
memory/3496-24-0x0000000002A60000-0x0000000002B76000-memory.dmp

Filesize
1.1MB

Download
memory/3496-23-0x0000000002A60000-0x0000000002B76000-memory.dmp

Filesize
1.1MB

Download
memory/3496-14-0x00000000087F0000-0x0000000008939000-memory.dmp

Filesize
1.3MB

Download
memory/3496-21-0x0000000002A60000-0x0000000002B76000-memory.dmp

Filesize
1.1MB

Download
memory/3652-2-0x0000000004320000-0x0000000004720000-memory.dmp

Filesize
4.0MB

Download
memory/4852-12-0x0000000000D90000-0x0000000000DA4000-memory.dmp

Filesize
80KB

Download
memory/4852-3-0x00000000004D0000-0x00000000004FF000-memory.dmp

Filesize
188KB

Download
memory/4852-6-0x0000000001100000-0x000000000144A000-memory.dmp

Filesize
3.3MB

Download
memory/4852-8-0x0000000000D20000-0x0000000000D34000-memory.dmp

Filesize
80KB

Download
memory/4852-7-0x00000000004D0000-0x00000000004FF000-memory.dmp

Filesize
188KB

Download
memory/4852-11-0x00000000004D0000-0x00000000004FF000-memory.dmp

Filesize
188KB

Download