formbook | c47ecbb9f13f48daa79ff7bc582625f238b8760f6a4fc542c0dcb6d2ffbec11f

Analysis

max time kernel
148s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 02:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

HScx.exe
Size

681KB
MD5

7aa9a6424157856428679fa6665b3276
SHA1

88f3a5b5cfc326bcb1fc9544af50e869c101c3c8
SHA256

c47ecbb9f13f48daa79ff7bc582625f238b8760f6a4fc542c0dcb6d2ffbec11f
SHA512

3446f3a8a2d1e06d0cac3f58f576d9329c906ac6befe561f1b46711b5e98e0b793ebbbd269b995b21026a72666496d45eec779c54109649418997c25a49adaee
SSDEEP

12288:vGZKzvnOBKYvI82Ok316ZjS5dN6cGc9oNkMS5cpSj3E4JfvafDpnqFU3:LOOXwpGT9uvA3Lhvar4FU3

Score

10^/10

formbook f19g discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

f19g

Decoy

ppson.top

lacialshoals.sbs

871122.vip

ghase.fun

si.app

attsnew.net

iyafashion.shop

hfuj3u8a6me3.shop

3vw67fqfwnj.shop

lumbiz.xyz

fsh6j.shop

razydev.top

aronmart.shop

oreclosed-homes-82435.bond

ometria24.online

assinonet.online

j17b.xyz

-web-p501.buzz

olar-panels-1469027.zone

oecommerce.lol

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/4056-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4056-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2388-22-0x00000000010E0000-0x000000000110F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4860 set thread context of 4056	4860	HScx.exe	93
PID 4056 set thread context of 3396	4056	HScx.exe	56
PID 2388 set thread context of 3396	2388	chkdsk.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	HScx.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 56 IoCs

pid	Process
4056	HScx.exe
4056	HScx.exe
4056	HScx.exe
4056	HScx.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe
2388	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4056	HScx.exe
4056	HScx.exe
4056	HScx.exe
2388	chkdsk.exe
2388	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4056	HScx.exe
Token: SeDebugPrivilege	2388	chkdsk.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3396	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 4860 wrote to memory of 4056	4860	HScx.exe	93
PID 3396 wrote to memory of 2388	3396	Explorer.EXE	94
PID 3396 wrote to memory of 2388	3396	Explorer.EXE	94
PID 3396 wrote to memory of 2388	3396	Explorer.EXE	94
PID 2388 wrote to memory of 4424	2388	chkdsk.exe	95
PID 2388 wrote to memory of 4424	2388	chkdsk.exe	95
PID 2388 wrote to memory of 4424	2388	chkdsk.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Users\Admin\AppData\Local\Temp\HScx.exe
  "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Users\Admin\AppData\Local\Temp\HScx.exe
    "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4056
- 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:2388
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4424

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

Loading Replay Monitor...

Downloads

memory/2388-22-0x00000000010E0000-0x000000000110F000-memory.dmp

Filesize
188KB

Download
memory/2388-20-0x0000000000A00000-0x0000000000A0A000-memory.dmp

Filesize
40KB

Download
memory/2388-19-0x0000000000A00000-0x0000000000A0A000-memory.dmp

Filesize
40KB

Download
memory/3396-29-0x0000000008130000-0x0000000008292000-memory.dmp

Filesize
1.4MB

Download
memory/3396-27-0x0000000008130000-0x0000000008292000-memory.dmp

Filesize
1.4MB

Download
memory/3396-26-0x0000000008130000-0x0000000008292000-memory.dmp

Filesize
1.4MB

Download
memory/3396-21-0x0000000007FF0000-0x00000000080CA000-memory.dmp

Filesize
872KB

Download
memory/3396-18-0x0000000007FF0000-0x00000000080CA000-memory.dmp

Filesize
872KB

Download
memory/4056-14-0x0000000001460000-0x00000000017AA000-memory.dmp

Filesize
3.3MB

Download
memory/4056-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4056-17-0x00000000017B0000-0x00000000017C5000-memory.dmp

Filesize
84KB

Download
memory/4056-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4860-6-0x00000000086C0000-0x00000000086D8000-memory.dmp

Filesize
96KB

Download
memory/4860-13-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/4860-10-0x0000000006E60000-0x0000000006EFC000-memory.dmp

Filesize
624KB

Download
memory/4860-9-0x0000000006BE0000-0x0000000006C56000-memory.dmp

Filesize
472KB

Download
memory/4860-8-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/4860-7-0x000000007488E000-0x000000007488F000-memory.dmp

Filesize
4KB

Download
memory/4860-0-0x000000007488E000-0x000000007488F000-memory.dmp

Filesize
4KB

Download
memory/4860-5-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/4860-4-0x0000000005A10000-0x0000000005A1A000-memory.dmp

Filesize
40KB

Download
memory/4860-3-0x0000000005960000-0x00000000059F2000-memory.dmp

Filesize
584KB

Download
memory/4860-2-0x0000000006030000-0x00000000065D4000-memory.dmp

Filesize
5.6MB

Download
memory/4860-1-0x0000000000EE0000-0x0000000000F90000-memory.dmp

Filesize
704KB

Download