formbook | b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-08-2024 01:42

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General

Target

b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
Size

1.1MB
MD5

14876f2aecbf08493108d81f260bfe7a
SHA1

ef0dfe01cecc9972141738f251a235059082b106
SHA256

b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5
SHA512

aff1f1d1dbc16059a895919a595902db67a59ea3eba46263defed3111a7fb0d3c241237c04a265c8045a6d52e313db6fdbc71ec01626bd30350210818820e774
SSDEEP

24576:xqDEvCTbMWu7rQYlBQcBiT6rprG8af5sFc/sq97F:xTvC/MTQYxsWR7afSckQ7

Score

10^/10

formbook jd21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

jd21

Decoy

thepowerofzeus.com

tampamlr.com

00050591.xyz

dominomusicmktlnc.com

ai-defi.wiki

tyumk.xyz

gbqspj.club

fostertv.net

batremake.com

nelwhiteconsulting.com

amsya.com

urbanholidayz.com

463058.photos

anag-gioielli.com

kjsdhklssk73.xyz

islarenta.com

designed4lifecoaching.com

autohotelsecrets.com

susansellsmarin.com

studyflow.xyz

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/1256-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1256-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/5056-20-0x0000000000BD0000-0x0000000000BFF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3340 set thread context of 1256	3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	86
PID 1256 set thread context of 3524	1256	svchost.exe	56
PID 5056 set thread context of 3524	5056	svchost.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	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1256	svchost.exe
1256	svchost.exe
1256	svchost.exe
1256	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe
5056	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
1256	svchost.exe
1256	svchost.exe
1256	svchost.exe
5056	svchost.exe
5056	svchost.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	1256	svchost.exe
Token: SeDebugPrivilege	5056	svchost.exe
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE
Token: SeShutdownPrivilege	3524	Explorer.EXE
Token: SeCreatePagefilePrivilege	3524	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
3524	Explorer.EXE
3524	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3524	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3340 wrote to memory of 1256	3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	86
PID 3340 wrote to memory of 1256	3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	86
PID 3340 wrote to memory of 1256	3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	86
PID 3340 wrote to memory of 1256	3340	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	86
PID 3524 wrote to memory of 5056	3524	Explorer.EXE	87
PID 3524 wrote to memory of 5056	3524	Explorer.EXE	87
PID 3524 wrote to memory of 5056	3524	Explorer.EXE	87
PID 5056 wrote to memory of 3728	5056	svchost.exe	88
PID 5056 wrote to memory of 3728	5056	svchost.exe	88
PID 5056 wrote to memory of 3728	5056	svchost.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3524
- C:\Users\Admin\AppData\Local\Temp\b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
  "C:\Users\Admin\AppData\Local\Temp\b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.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:3340
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1256
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.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:5056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3728

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

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Downloads

memory/1256-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1256-12-0x0000000001400000-0x000000000174A000-memory.dmp

Filesize
3.3MB

Download
memory/1256-15-0x0000000001180000-0x0000000001195000-memory.dmp

Filesize
84KB

Download
memory/1256-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3340-10-0x0000000003450000-0x0000000003454000-memory.dmp

Filesize
16KB

Download
memory/3524-22-0x0000000008780000-0x00000000088D6000-memory.dmp

Filesize
1.3MB

Download
memory/3524-16-0x0000000008780000-0x00000000088D6000-memory.dmp

Filesize
1.3MB

Download
memory/3524-25-0x0000000002910000-0x00000000029E5000-memory.dmp

Filesize
852KB

Download
memory/3524-26-0x0000000002910000-0x00000000029E5000-memory.dmp

Filesize
852KB

Download
memory/3524-29-0x0000000002910000-0x00000000029E5000-memory.dmp

Filesize
852KB

Download
memory/5056-19-0x0000000000850000-0x000000000085E000-memory.dmp

Filesize
56KB

Download
memory/5056-17-0x0000000000850000-0x000000000085E000-memory.dmp

Filesize
56KB

Download
memory/5056-20-0x0000000000BD0000-0x0000000000BFF000-memory.dmp

Filesize
188KB

Download