formbook | 4f4856cb0d348857a9c1080460bad16f6d5ab86c51b8041734a9c3204c5fc57c

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 15:08

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General

Target

Dekont_30.exe
Size

804KB
MD5

853048d16c237765d3c0ffc07f9b2879
SHA1

a968bae9a55244d7de1a05b9e59254648f3815eb
SHA256

6153e389b9e4df22730eddb6f964c640e98661a45fc4578136dd6a33bb821fa5
SHA512

aa1376ce2a46c0772fb9d7e530669d05332656316be5dc4236ec4f4d4835e8ba3fa2debeee6d6644e9e240ec3fdf6c3a4e09eb9c1731d730094ad5ef10b1ebe8
SSDEEP

12288:urCkyCZMiLZ31cch3sln0h8KvqwB7UWg4kHpC7cVZH4:6yClFdsEKP4u+uY

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2188-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2188-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2188-68-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3044-75-0x00000000012C0000-0x00000000012EF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3432	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Dekont_30.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4536 set thread context of 2188	4536	Dekont_30.exe	98
PID 2188 set thread context of 3144	2188	Dekont_30.exe	54
PID 2188 set thread context of 3144	2188	Dekont_30.exe	54
PID 3044 set thread context of 3144	3044	raserver.exe	54

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 4 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	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dekont_30.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
2188	Dekont_30.exe
2188	Dekont_30.exe
2188	Dekont_30.exe
2188	Dekont_30.exe
3432	powershell.exe
3432	powershell.exe
2188	Dekont_30.exe
2188	Dekont_30.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe
3044	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2188	Dekont_30.exe
2188	Dekont_30.exe
2188	Dekont_30.exe
2188	Dekont_30.exe
3044	raserver.exe
3044	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	Dekont_30.exe
Token: SeDebugPrivilege	3432	powershell.exe
Token: SeShutdownPrivilege	3144	Explorer.EXE
Token: SeCreatePagefilePrivilege	3144	Explorer.EXE
Token: SeDebugPrivilege	3044	raserver.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 3432	4536	Dekont_30.exe	96
PID 4536 wrote to memory of 3432	4536	Dekont_30.exe	96
PID 4536 wrote to memory of 3432	4536	Dekont_30.exe	96
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 4536 wrote to memory of 2188	4536	Dekont_30.exe	98
PID 3144 wrote to memory of 3044	3144	Explorer.EXE	99
PID 3144 wrote to memory of 3044	3144	Explorer.EXE	99
PID 3144 wrote to memory of 3044	3144	Explorer.EXE	99
PID 3044 wrote to memory of 4404	3044	raserver.exe	100
PID 3044 wrote to memory of 4404	3044	raserver.exe	100
PID 3044 wrote to memory of 4404	3044	raserver.exe	100

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe
  "C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4536
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3432
- - C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe
    "C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2188
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:3044
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Dekont_30.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lzu1xhv1.t2y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2188-19-0x0000000001790000-0x00000000017A4000-memory.dmp

Filesize
80KB

Download
memory/2188-14-0x00000000017D0000-0x0000000001B1A000-memory.dmp

Filesize
3.3MB

Download
memory/2188-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2188-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2188-69-0x0000000001C10000-0x0000000001C24000-memory.dmp

Filesize
80KB

Download
memory/2188-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3044-75-0x00000000012C0000-0x00000000012EF000-memory.dmp

Filesize
188KB

Download
memory/3044-74-0x0000000000FB0000-0x0000000000FCF000-memory.dmp

Filesize
124KB

Download
memory/3044-72-0x0000000000FB0000-0x0000000000FCF000-memory.dmp

Filesize
124KB

Download
memory/3144-71-0x0000000003C20000-0x0000000003DA5000-memory.dmp

Filesize
1.5MB

Download
memory/3144-70-0x0000000002510000-0x00000000025DF000-memory.dmp

Filesize
828KB

Download
memory/3144-20-0x0000000002510000-0x00000000025DF000-memory.dmp

Filesize
828KB

Download
memory/3144-76-0x0000000003C20000-0x0000000003DA5000-memory.dmp

Filesize
1.5MB

Download
memory/3144-80-0x0000000007BB0000-0x0000000007CA0000-memory.dmp

Filesize
960KB

Download
memory/3432-36-0x0000000006020000-0x0000000006374000-memory.dmp

Filesize
3.3MB

Download
memory/3432-62-0x0000000007CB0000-0x0000000007CCA000-memory.dmp

Filesize
104KB

Download
memory/3432-15-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/3432-21-0x0000000002C80000-0x0000000002CB6000-memory.dmp

Filesize
216KB

Download
memory/3432-66-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-22-0x00000000053B0000-0x00000000053C0000-memory.dmp

Filesize
64KB

Download
memory/3432-23-0x00000000059F0000-0x0000000006018000-memory.dmp

Filesize
6.2MB

Download
memory/3432-25-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/3432-24-0x0000000005700000-0x0000000005722000-memory.dmp

Filesize
136KB

Download
memory/3432-26-0x0000000005880000-0x00000000058E6000-memory.dmp

Filesize
408KB

Download
memory/3432-63-0x0000000007C90000-0x0000000007C98000-memory.dmp

Filesize
32KB

Download
memory/3432-17-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-37-0x0000000006640000-0x000000000665E000-memory.dmp

Filesize
120KB

Download
memory/3432-38-0x0000000006690000-0x00000000066DC000-memory.dmp

Filesize
304KB

Download
memory/3432-39-0x000000007F6F0000-0x000000007F700000-memory.dmp

Filesize
64KB

Download
memory/3432-40-0x0000000006B70000-0x0000000006BA2000-memory.dmp

Filesize
200KB

Download
memory/3432-41-0x0000000070520000-0x000000007056C000-memory.dmp

Filesize
304KB

Download
memory/3432-44-0x00000000053B0000-0x00000000053C0000-memory.dmp

Filesize
64KB

Download
memory/3432-43-0x00000000053B0000-0x00000000053C0000-memory.dmp

Filesize
64KB

Download
memory/3432-53-0x0000000006BD0000-0x0000000006BEE000-memory.dmp

Filesize
120KB

Download
memory/3432-54-0x00000000078D0000-0x0000000007973000-memory.dmp

Filesize
652KB

Download
memory/3432-55-0x0000000008000000-0x000000000867A000-memory.dmp

Filesize
6.5MB

Download
memory/3432-56-0x0000000007980000-0x000000000799A000-memory.dmp

Filesize
104KB

Download
memory/3432-57-0x00000000079E0000-0x00000000079EA000-memory.dmp

Filesize
40KB

Download
memory/3432-58-0x0000000007BF0000-0x0000000007C86000-memory.dmp

Filesize
600KB

Download
memory/3432-59-0x0000000007B70000-0x0000000007B81000-memory.dmp

Filesize
68KB

Download
memory/3432-60-0x0000000007BA0000-0x0000000007BAE000-memory.dmp

Filesize
56KB

Download
memory/3432-61-0x0000000007BB0000-0x0000000007BC4000-memory.dmp

Filesize
80KB

Download
memory/4536-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/4536-10-0x000000000A720000-0x000000000A7BC000-memory.dmp

Filesize
624KB

Download
memory/4536-13-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4536-9-0x0000000006C50000-0x0000000006CC8000-memory.dmp

Filesize
480KB

Download
memory/4536-8-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4536-7-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/4536-6-0x0000000005B70000-0x0000000005B8C000-memory.dmp

Filesize
112KB

Download
memory/4536-5-0x00000000057E0000-0x00000000057EA000-memory.dmp

Filesize
40KB

Download
memory/4536-4-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4536-3-0x0000000005820000-0x00000000058B2000-memory.dmp

Filesize
584KB

Download
memory/4536-2-0x0000000005CF0000-0x0000000006294000-memory.dmp

Filesize
5.6MB

Download
memory/4536-1-0x0000000000D10000-0x0000000000DE0000-memory.dmp

Filesize
832KB

Download