formbook | b71b353da449108a5ed6aac6e44133552651be0099dbba14884af1406874eaa0

General

Target

RFQ-GUE-245801.exe
Size

548KB
MD5

50b2874b18ed801760721ddeceaa2e2f
SHA1

28be937d4825809f593da427dd258b2aed86e05a
SHA256

b71b353da449108a5ed6aac6e44133552651be0099dbba14884af1406874eaa0
SHA512

eddee0d37ff0847c01e910d8445cdf91551530f4eab74a6ada32995a6d577ab2239986580887314578e54bb99fc7a4d84ff3d5de74848506951e8eb5c5bbfb24
SSDEEP

12288:Kwbv8EXjsnoqXcT6gEkF6lLWBmccwip9X5C/ow:hbvfgoqs/Eo6/ccFk/

Score

10^/10

formbook c24t discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

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
behavioral1/memory/1160-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1160-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2692-25-0x0000000000080000-0x00000000000AF000-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
2480	powershell.exe

Deletes itself 1 IoCs

pid	Process
2892	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 1160	1820	RFQ-GUE-245801.exe	29
PID 1160 set thread context of 1196	1160	RFQ-GUE-245801.exe	20
PID 2692 set thread context of 1196	2692	NETSTAT.EXE	20

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ-GUE-245801.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2692	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
1820	RFQ-GUE-245801.exe
1820	RFQ-GUE-245801.exe
1160	RFQ-GUE-245801.exe
1160	RFQ-GUE-245801.exe
2480	powershell.exe
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE
2692	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1160	RFQ-GUE-245801.exe
1160	RFQ-GUE-245801.exe
1160	RFQ-GUE-245801.exe
2692	NETSTAT.EXE
2692	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1820	RFQ-GUE-245801.exe
Token: SeDebugPrivilege	1160	RFQ-GUE-245801.exe
Token: SeDebugPrivilege	2480	powershell.exe
Token: SeDebugPrivilege	2692	NETSTAT.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2480	1820	RFQ-GUE-245801.exe	28
PID 1820 wrote to memory of 2480	1820	RFQ-GUE-245801.exe	28
PID 1820 wrote to memory of 2480	1820	RFQ-GUE-245801.exe	28
PID 1820 wrote to memory of 2480	1820	RFQ-GUE-245801.exe	28
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1820 wrote to memory of 1160	1820	RFQ-GUE-245801.exe	29
PID 1196 wrote to memory of 2692	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2692	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2692	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2692	1196	Explorer.EXE	31
PID 2692 wrote to memory of 2892	2692	NETSTAT.EXE	32
PID 2692 wrote to memory of 2892	2692	NETSTAT.EXE	32
PID 2692 wrote to memory of 2892	2692	NETSTAT.EXE	32
PID 2692 wrote to memory of 2892	2692	NETSTAT.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\RFQ-GUE-245801.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ-GUE-245801.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1820
- - 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\RFQ-GUE-245801.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2480
- - C:\Users\Admin\AppData\Local\Temp\RFQ-GUE-245801.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-GUE-245801.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1160
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\RFQ-GUE-245801.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1160-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1160-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1160-19-0x00000000002D0000-0x00000000002E4000-memory.dmp

Filesize
80KB

Download
memory/1160-15-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

Filesize
3.0MB

Download
memory/1160-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1160-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1160-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1196-20-0x0000000006C10000-0x0000000006D2B000-memory.dmp

Filesize
1.1MB

Download
memory/1196-17-0x0000000004600000-0x0000000004800000-memory.dmp

Filesize
2.0MB

Download
memory/1196-26-0x0000000006C10000-0x0000000006D2B000-memory.dmp

Filesize
1.1MB

Download
memory/1820-21-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1820-4-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download
memory/1820-3-0x0000000004EC0000-0x0000000004F54000-memory.dmp

Filesize
592KB

Download
memory/1820-5-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1820-7-0x0000000002170000-0x00000000021E6000-memory.dmp

Filesize
472KB

Download
memory/1820-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1820-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1820-1-0x00000000008A0000-0x0000000000930000-memory.dmp

Filesize
576KB

Download
memory/1820-6-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2692-24-0x0000000000F90000-0x0000000000F99000-memory.dmp

Filesize
36KB

Download
memory/2692-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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