formbook | dd82f88cdd4a62e9e9b5a081cbd3f98b542614ee6b0e33c2385817af92c704a1

General

Target

rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
Size

1.4MB
MD5

289754998d1520e2bec7190452c464ac
SHA1

a25755aa21ff2512d7f0b19af804c7ca81729767
SHA256

dd82f88cdd4a62e9e9b5a081cbd3f98b542614ee6b0e33c2385817af92c704a1
SHA512

03e640719eee50a99cdcfce411c940339d5f0142beb4eba5d081a9ac493059fc44be9971f1e78750584cff478941f04c6ea3d61468f8dd903a6636324353ab08
SSDEEP

24576:3qDEvCTbMWu7rQYlBQcBiT6rprG8a1pSsnwcKYQkZrUEI5DafK:3TvC/MTQYxsWR7a1Isn+k6EI

Score

10^/10

formbook bs84 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bs84

Decoy

ehuatang.quest

mart-healthcare.solutions

arehouse-inventory-59593.bond

rumpjokes.net

oonlightshadow.store

odernoob.website

sdmedia.net

0k21l6z.xyz

kwovenart.shop

chvb.bid

06ks28.buzz

grexvc.online

unnycdn02.shop

ettingitgonejunk.net

lubmango.store

ustjump.xyz

ofiveuss.store

aahasti-inter5.rest

etclcg.business

ai365.xyz

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2524-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2524-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2924-23-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\overrough.vbs	overrough.exe

Executes dropped EXE 1 IoCs

pid	Process
2420	overrough.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0008000000016ca2-4.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 2524	2420	overrough.exe	31
PID 2524 set thread context of 1240	2524	svchost.exe	21
PID 2924 set thread context of 1240	2924	msdt.exe	21

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	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	overrough.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2524	svchost.exe
2524	svchost.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe
2924	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2420	overrough.exe
2524	svchost.exe
2524	svchost.exe
2524	svchost.exe
2924	msdt.exe
2924	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	svchost.exe
Token: SeDebugPrivilege	2924	msdt.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
2420	overrough.exe
2420	overrough.exe
1240	Explorer.EXE
1240	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
2420	overrough.exe
2420	overrough.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2420	1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe	30
PID 1740 wrote to memory of 2420	1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe	30
PID 1740 wrote to memory of 2420	1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe	30
PID 1740 wrote to memory of 2420	1740	rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe	30
PID 2420 wrote to memory of 2524	2420	overrough.exe	31
PID 2420 wrote to memory of 2524	2420	overrough.exe	31
PID 2420 wrote to memory of 2524	2420	overrough.exe	31
PID 2420 wrote to memory of 2524	2420	overrough.exe	31
PID 2420 wrote to memory of 2524	2420	overrough.exe	31
PID 1240 wrote to memory of 2924	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2924	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2924	1240	Explorer.EXE	32
PID 1240 wrote to memory of 2924	1240	Explorer.EXE	32
PID 2924 wrote to memory of 2812	2924	msdt.exe	33
PID 2924 wrote to memory of 2812	2924	msdt.exe	33
PID 2924 wrote to memory of 2812	2924	msdt.exe	33
PID 2924 wrote to memory of 2812	2924	msdt.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Users\Admin\AppData\Local\antholite\overrough.exe
    "C:\Users\Admin\AppData\Local\Temp\rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - 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:2420
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\rRFQ_BIDLET-PO772917811_PROPOSL_BG_AD____PDF.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2524
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:2924
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

\Users\Admin\AppData\Local\antholite\overrough.exe

Filesize
1.4MB

MD5
289754998d1520e2bec7190452c464ac

SHA1
a25755aa21ff2512d7f0b19af804c7ca81729767

SHA256
dd82f88cdd4a62e9e9b5a081cbd3f98b542614ee6b0e33c2385817af92c704a1

SHA512
03e640719eee50a99cdcfce411c940339d5f0142beb4eba5d081a9ac493059fc44be9971f1e78750584cff478941f04c6ea3d61468f8dd903a6636324353ab08

Download Submit
memory/1240-19-0x0000000004F50000-0x00000000050B5000-memory.dmp

Filesize
1.4MB

Download
memory/1240-29-0x0000000003CB0000-0x0000000003D48000-memory.dmp

Filesize
608KB

Download
memory/1240-24-0x0000000004F50000-0x00000000050B5000-memory.dmp

Filesize
1.4MB

Download
memory/1740-2-0x0000000000730000-0x0000000000B30000-memory.dmp

Filesize
4.0MB

Download
memory/2420-22-0x0000000000990000-0x0000000000D90000-memory.dmp

Filesize
4.0MB

Download
memory/2420-12-0x0000000000990000-0x0000000000D90000-memory.dmp

Filesize
4.0MB

Download
memory/2420-11-0x0000000000990000-0x0000000000D90000-memory.dmp

Filesize
4.0MB

Download
memory/2524-18-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2524-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2524-15-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2524-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2924-20-0x00000000004C0000-0x00000000005B4000-memory.dmp

Filesize
976KB

Download
memory/2924-21-0x00000000004C0000-0x00000000005B4000-memory.dmp

Filesize
976KB

Download
memory/2924-23-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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