formbook | b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5

Analysis

max time kernel
148s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-08-2024 10:46

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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/1496-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1496-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2320-20-0x0000000000B30000-0x0000000000B5F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4660 set thread context of 1496	4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	88
PID 1496 set thread context of 3452	1496	svchost.exe	56
PID 2320 set thread context of 3452	2320	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

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
1496	svchost.exe
1496	svchost.exe
1496	svchost.exe
1496	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe
2320	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
1496	svchost.exe
1496	svchost.exe
1496	svchost.exe
2320	svchost.exe
2320	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1496	svchost.exe
Token: SeDebugPrivilege	2320	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe
4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3452	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 1496	4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	88
PID 4660 wrote to memory of 1496	4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	88
PID 4660 wrote to memory of 1496	4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	88
PID 4660 wrote to memory of 1496	4660	b5c54101374cc75a2e4b8960243fbccfe81c267d9e05af3b72e10b2fa812aff5.exe	88
PID 3452 wrote to memory of 2320	3452	Explorer.EXE	89
PID 3452 wrote to memory of 2320	3452	Explorer.EXE	89
PID 3452 wrote to memory of 2320	3452	Explorer.EXE	89
PID 2320 wrote to memory of 1720	2320	svchost.exe	90
PID 2320 wrote to memory of 1720	2320	svchost.exe	90
PID 2320 wrote to memory of 1720	2320	svchost.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3452
- 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:4660
- - 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:1496
- 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:2320
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1720

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

Replay Monitor

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Downloads

memory/1496-15-0x00000000015D0000-0x00000000015E5000-memory.dmp

Filesize
84KB

Download
memory/1496-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1496-12-0x0000000001800000-0x0000000001B4A000-memory.dmp

Filesize
3.3MB

Download
memory/1496-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2320-19-0x0000000000580000-0x000000000058E000-memory.dmp

Filesize
56KB

Download
memory/2320-17-0x0000000000580000-0x000000000058E000-memory.dmp

Filesize
56KB

Download
memory/2320-20-0x0000000000B30000-0x0000000000B5F000-memory.dmp

Filesize
188KB

Download
memory/3452-16-0x00000000081E0000-0x0000000008301000-memory.dmp

Filesize
1.1MB

Download
memory/3452-22-0x00000000081E0000-0x0000000008301000-memory.dmp

Filesize
1.1MB

Download
memory/3452-25-0x00000000025A0000-0x0000000002694000-memory.dmp

Filesize
976KB

Download
memory/3452-26-0x00000000025A0000-0x0000000002694000-memory.dmp

Filesize
976KB

Download
memory/3452-29-0x00000000025A0000-0x0000000002694000-memory.dmp

Filesize
976KB

Download
memory/4660-10-0x0000000002440000-0x0000000002444000-memory.dmp

Filesize
16KB

Download