formbook | 8785dff9a984f1afb94206ed984921c85e1d6e821b209296e9f7642961239f17

Analysis

max time kernel
150s
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
20-09-2024 13:17

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General

Target

signed contract.exe
Size

762KB
MD5

1cfab4e68a14edd1b9a4c54561a8aa69
SHA1

6712b67cc45056cc9d3bd27c0a5f6b5c29eabae1
SHA256

8d83a9a3bbd6e63e37b6d66c4febdbcf17a48fe77fabdd52c5bfa01a661a33da
SHA512

a3f100f9a0026e29352c2af3e94ab0f20bd4c45799545b0104b6c1029d2904d9b06a160f58db7a3467562686cdabd4cfd74d8ea5b49af68a31fc541490b759d0
SSDEEP

12288:v6Wq4aaE6KwyF5L0Y2D1PqL8CN5+CROltnD9bmAcZBYfFcEYsvIU/wR7UmtJZeFQ:tthEVaPqL8C7+wOltDrQB0cPUwesmrS

Score

10^/10

formbook c89p discovery rat spyware stealer trojan upx

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c89p

Decoy

ftersaleb.top

dcustomdesgins.net

ostbet2024.live

rhgtrdjdjytkyhretrdjfytd.buzz

atauniversity.tech

idoctor365.net

x-design-courses-29670.bond

ellowold-pc.top

ransportationmmsytpro.top

areerfest.xyz

artiresbah-in.today

ijie.pro

torehousestudio.info

69-11-luxury-watches.shop

earing-tests-44243.bond

hits.shop

hzl9.bond

lood-test-jp-1.bond

livialiving.online

usymomsmakingmoney.online

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3408-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3408-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2680-15-0x00000000001B0000-0x00000000001DF000-memory.dmp	formbook

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4324-0-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral2/memory/4324-6-0x0000000000400000-0x00000000004C2000-memory.dmp	upx

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4324-6-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4324 set thread context of 3408	4324	signed contract.exe	82
PID 3408 set thread context of 3524	3408	svchost.exe	56
PID 2680 set thread context of 3524	2680	rundll32.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	signed contract.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
3408	svchost.exe
3408	svchost.exe
3408	svchost.exe
3408	svchost.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4324	signed contract.exe
3408	svchost.exe
3408	svchost.exe
3408	svchost.exe
2680	rundll32.exe
2680	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	svchost.exe
Token: SeDebugPrivilege	2680	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3408	4324	signed contract.exe	82
PID 4324 wrote to memory of 3408	4324	signed contract.exe	82
PID 4324 wrote to memory of 3408	4324	signed contract.exe	82
PID 4324 wrote to memory of 3408	4324	signed contract.exe	82
PID 3524 wrote to memory of 2680	3524	Explorer.EXE	83
PID 3524 wrote to memory of 2680	3524	Explorer.EXE	83
PID 3524 wrote to memory of 2680	3524	Explorer.EXE	83
PID 2680 wrote to memory of 4940	2680	rundll32.exe	88
PID 2680 wrote to memory of 4940	2680	rundll32.exe	88
PID 2680 wrote to memory of 4940	2680	rundll32.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3524
- C:\Users\Admin\AppData\Local\Temp\signed contract.exe
  "C:\Users\Admin\AppData\Local\Temp\signed contract.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4324
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\signed contract.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3408
- 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:2680
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4940

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

Replay Monitor

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Downloads

memory/2680-12-0x0000000000DC0000-0x0000000000DD4000-memory.dmp

Filesize
80KB

Download
memory/2680-15-0x00000000001B0000-0x00000000001DF000-memory.dmp

Filesize
188KB

Download
memory/2680-14-0x0000000000DC0000-0x0000000000DD4000-memory.dmp

Filesize
80KB

Download
memory/3408-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3408-7-0x0000000001600000-0x000000000194A000-memory.dmp

Filesize
3.3MB

Download
memory/3408-10-0x0000000001320000-0x0000000001334000-memory.dmp

Filesize
80KB

Download
memory/3408-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3524-11-0x0000000002FC0000-0x00000000030F1000-memory.dmp

Filesize
1.2MB

Download
memory/3524-16-0x0000000002FC0000-0x00000000030F1000-memory.dmp

Filesize
1.2MB

Download
memory/3524-20-0x00000000087C0000-0x0000000008921000-memory.dmp

Filesize
1.4MB

Download
memory/3524-21-0x00000000087C0000-0x0000000008921000-memory.dmp

Filesize
1.4MB

Download
memory/3524-23-0x00000000087C0000-0x0000000008921000-memory.dmp

Filesize
1.4MB

Download
memory/4324-0-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/4324-6-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/4324-3-0x0000000004090000-0x0000000004290000-memory.dmp

Filesize
2.0MB

Download