formbook | c238c87da66a473e332d47a34188110996e1c031b92305ce7c5360a599ac77a6

General

Target

1105-12-24-3077-103-AUX ENGINE.exe
Size

1.1MB
MD5

2b7603ed4cda1e3f4a32e8b095d8b7a9
SHA1

4486a0bd55eb84fbad4f87cd2e1e24d72d5a8a2d
SHA256

4b82d5c42d137fa8eb1b6e835b24c1ff0d58ca98fffe8616d0391c1f71dbec64
SHA512

7f7c9d1b622db2bd6927d3f21fcde9f08ca1f100a297b3288a5b5eedc297a0d429f9ca7ffdbed2bf0af4c9774f10e1536c91f96d644848a8ecba7e64e5aa4f78
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCzquOApO6cqWdrzlfWRzFzR:7JZoQrbTFZY1iaCWuO0O5RzwRzFV

Score

10^/10

formbook c24t discovery 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/2904-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2904-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2200-14-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 2904 set thread context of 1116	2904	svchost.exe	20
PID 2200 set thread context of 1116	2200	wlanext.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 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	1105-12-24-3077-103-AUX ENGINE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2904	svchost.exe
2904	svchost.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe
2200	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1820	1105-12-24-3077-103-AUX ENGINE.exe
2904	svchost.exe
2904	svchost.exe
2904	svchost.exe
2200	wlanext.exe
2200	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2904	svchost.exe
Token: SeDebugPrivilege	2200	wlanext.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 1820 wrote to memory of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 1820 wrote to memory of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 1820 wrote to memory of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 1820 wrote to memory of 2904	1820	1105-12-24-3077-103-AUX ENGINE.exe	28
PID 1116 wrote to memory of 2200	1116	Explorer.EXE	29
PID 1116 wrote to memory of 2200	1116	Explorer.EXE	29
PID 1116 wrote to memory of 2200	1116	Explorer.EXE	29
PID 1116 wrote to memory of 2200	1116	Explorer.EXE	29
PID 2200 wrote to memory of 1628	2200	wlanext.exe	30
PID 2200 wrote to memory of 1628	2200	wlanext.exe	30
PID 2200 wrote to memory of 1628	2200	wlanext.exe	30
PID 2200 wrote to memory of 1628	2200	wlanext.exe	30

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Users\Admin\AppData\Local\Temp\1105-12-24-3077-103-AUX ENGINE.exe
  "C:\Users\Admin\AppData\Local\Temp\1105-12-24-3077-103-AUX ENGINE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1820
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\1105-12-24-3077-103-AUX ENGINE.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2904
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:2200
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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/1116-9-0x0000000004580000-0x000000000464E000-memory.dmp

Filesize
824KB

Download
memory/1116-15-0x0000000004580000-0x000000000464E000-memory.dmp

Filesize
824KB

Download
memory/1820-2-0x0000000003510000-0x0000000003910000-memory.dmp

Filesize
4.0MB

Download
memory/1820-13-0x0000000003510000-0x0000000003910000-memory.dmp

Filesize
4.0MB

Download
memory/2200-10-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/2200-12-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/2200-14-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2904-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2904-4-0x0000000000950000-0x0000000000C53000-memory.dmp

Filesize
3.0MB

Download
memory/2904-7-0x0000000000110000-0x0000000000124000-memory.dmp

Filesize
80KB

Download
memory/2904-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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