formbook | 26b9c2220fa1bef6a477b8303062792420b9fbf3eb4d21da840b11bf93c5d9dc

Analysis

max time kernel
148s
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
19/09/2024, 12:28

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General

Target

DHL documents_PDF.exe
Size

727KB
MD5

3443feb2f20fa6f6786c585a984d7f3e
SHA1

fbda1359faede8b116b7eeb24c02e422f05f674f
SHA256

26b9c2220fa1bef6a477b8303062792420b9fbf3eb4d21da840b11bf93c5d9dc
SHA512

f3f4a4bcae338a24a53ca5125317eac81570234c818679f53f8a4b36a99738a873c5a3bbddcc431c43f262c263f353cd4616d6e81ba92c7af6b027529c94422b
SSDEEP

12288:cePDXRuoLrmCi5WRSKT5rnzjQjfCplpuyjAMqYmRgStP+H7A11HsX:cePp0KT5tuysMqYYmbG5s

Score

10^/10

formbook b31a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b31a

Decoy

enjamin-paaac.buzz

mail-marketing-40950.bond

pusems28-post.cyou

hindo.top

ruck-company-be.today

asinos-deutschland.net

ewancash.boats

etdopovo.casino

rcher-saaac.buzz

871166.vip

manuel.app

g3yqo.shop

-9way.xyz

qawgytfexe.bond

iefi6834.vip

ental-health-35901.bond

idat-merkez18.top

rojectleadzone.website

lirudolph.top

migloballlc.online

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/2988-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2988-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2988-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4492-27-0x0000000000B60000-0x0000000000B8F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 392 set thread context of 2988	392	DHL documents_PDF.exe	89
PID 2988 set thread context of 3532	2988	DHL documents_PDF.exe	56
PID 2988 set thread context of 3532	2988	DHL documents_PDF.exe	56
PID 4492 set thread context of 3532	4492	rundll32.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	DHL documents_PDF.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 58 IoCs

pid	Process
392	DHL documents_PDF.exe
392	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe
4492	rundll32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
2988	DHL documents_PDF.exe
4492	rundll32.exe
4492	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	392	DHL documents_PDF.exe
Token: SeDebugPrivilege	2988	DHL documents_PDF.exe
Token: SeDebugPrivilege	4492	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 392 wrote to memory of 2988	392	DHL documents_PDF.exe	89
PID 3532 wrote to memory of 4492	3532	Explorer.EXE	90
PID 3532 wrote to memory of 4492	3532	Explorer.EXE	90
PID 3532 wrote to memory of 4492	3532	Explorer.EXE	90
PID 4492 wrote to memory of 548	4492	rundll32.exe	91
PID 4492 wrote to memory of 548	4492	rundll32.exe	91
PID 4492 wrote to memory of 548	4492	rundll32.exe	91

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\DHL documents_PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL documents_PDF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:392
- - C:\Users\Admin\AppData\Local\Temp\DHL documents_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL documents_PDF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2988
- 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:4492
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\DHL documents_PDF.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:548

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/392-13-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/392-1-0x0000000000A20000-0x0000000000ADC000-memory.dmp

Filesize
752KB

Download
memory/392-2-0x0000000005AB0000-0x0000000006054000-memory.dmp

Filesize
5.6MB

Download
memory/392-3-0x0000000005500000-0x0000000005592000-memory.dmp

Filesize
584KB

Download
memory/392-4-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/392-5-0x00000000054A0000-0x00000000054AA000-memory.dmp

Filesize
40KB

Download
memory/392-6-0x0000000005640000-0x0000000005650000-memory.dmp

Filesize
64KB

Download
memory/392-7-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/392-8-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/392-9-0x0000000007120000-0x0000000007196000-memory.dmp

Filesize
472KB

Download
memory/392-10-0x00000000097F0000-0x000000000988C000-memory.dmp

Filesize
624KB

Download
memory/392-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2988-17-0x00000000016D0000-0x00000000016E4000-memory.dmp

Filesize
80KB

Download
memory/2988-21-0x0000000001730000-0x0000000001744000-memory.dmp

Filesize
80KB

Download
memory/2988-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2988-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2988-14-0x0000000001760000-0x0000000001AAA000-memory.dmp

Filesize
3.3MB

Download
memory/2988-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3532-18-0x0000000008C80000-0x0000000008DBD000-memory.dmp

Filesize
1.2MB

Download
memory/3532-22-0x00000000032B0000-0x00000000033CA000-memory.dmp

Filesize
1.1MB

Download
memory/3532-23-0x0000000008C80000-0x0000000008DBD000-memory.dmp

Filesize
1.2MB

Download
memory/3532-28-0x00000000032B0000-0x00000000033CA000-memory.dmp

Filesize
1.1MB

Download
memory/3532-31-0x0000000007990000-0x0000000007A72000-memory.dmp

Filesize
904KB

Download
memory/3532-33-0x0000000007990000-0x0000000007A72000-memory.dmp

Filesize
904KB

Download
memory/3532-34-0x0000000007990000-0x0000000007A72000-memory.dmp

Filesize
904KB

Download
memory/4492-24-0x00000000001B0000-0x00000000001C4000-memory.dmp

Filesize
80KB

Download
memory/4492-26-0x00000000001B0000-0x00000000001C4000-memory.dmp

Filesize
80KB

Download
memory/4492-27-0x0000000000B60000-0x0000000000B8F000-memory.dmp

Filesize
188KB

Download