formbook | d5baef9db7f3e1416bcb9b58c73b08ff8eb855f7ea93ded4f63e8185a46d2520

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 14:59

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General

Target

Purchase order _SIP008.exe
Size

1.2MB
MD5

0f23b3dede5773a4da6e3f6869da28ad
SHA1

16b4fc729dc5b66381e710717acd7a226f0c631f
SHA256

3f4e8eda03283329f391e111c756f7b6ece4a9bc0d41672af8c1f09baf2b1cec
SHA512

5acc67f5cf49dcd7b50c5ef14cffa2990edc146f41ec5507f6d79476fa21026f3a5082b0f8d412153b4951e7f3f1172858705e0d7c582da79cffe88b37402f52
SSDEEP

24576:iAOcZXp03RQgAgCkLOMhc2e+Q+3mG2k1ny76RPGQFV0aBTjWFqwA5:ojRAgCk3clDmtGQFV9jWG

Score

10^/10

formbook mh76 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

mh76

Decoy

healthgovcalottery.net

wenxinliao.com

rooterphd.com

bbobbo.one

american-mes-de-dezembro.xyz

mintager.com

thespecialtstore.com

wemakegreenhomes.com

occurandmental.xyz

fidelityrealtytitle.com

numerisat.asia

wearestallions.com

supxl.com

rajacumi.com

renaziv.online

blixtindustries.com

fjljq.com

exploretrivenicamping.com

authenticusspa.com

uucloud.press

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
behavioral2/memory/1772-53-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1772-56-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4856-62-0x0000000000150000-0x000000000017F000-memory.dmp	formbook

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Purchase order _SIP008.exe

Executes dropped EXE 1 IoCs

pid	Process
1872	gdvvbotbw.pif

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 1772	1872	gdvvbotbw.pif	87
PID 1772 set thread context of 3432	1772	RegSvcs.exe	56
PID 4856 set thread context of 3432	4856	rundll32.exe	56

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	Purchase order _SIP008.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gdvvbotbw.pif
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 60 IoCs

pid	Process
1772	RegSvcs.exe
1772	RegSvcs.exe
1772	RegSvcs.exe
1772	RegSvcs.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe
4856	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1772	RegSvcs.exe
1772	RegSvcs.exe
1772	RegSvcs.exe
4856	rundll32.exe
4856	rundll32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	RegSvcs.exe
Token: SeShutdownPrivilege	3432	Explorer.EXE
Token: SeCreatePagefilePrivilege	3432	Explorer.EXE
Token: SeShutdownPrivilege	3432	Explorer.EXE
Token: SeCreatePagefilePrivilege	3432	Explorer.EXE
Token: SeDebugPrivilege	4856	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3300 wrote to memory of 1872	3300	Purchase order _SIP008.exe	83
PID 3300 wrote to memory of 1872	3300	Purchase order _SIP008.exe	83
PID 3300 wrote to memory of 1872	3300	Purchase order _SIP008.exe	83
PID 1872 wrote to memory of 3076	1872	gdvvbotbw.pif	86
PID 1872 wrote to memory of 3076	1872	gdvvbotbw.pif	86
PID 1872 wrote to memory of 3076	1872	gdvvbotbw.pif	86
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 1872 wrote to memory of 1772	1872	gdvvbotbw.pif	87
PID 3432 wrote to memory of 4856	3432	Explorer.EXE	92
PID 3432 wrote to memory of 4856	3432	Explorer.EXE	92
PID 3432 wrote to memory of 4856	3432	Explorer.EXE	92
PID 4856 wrote to memory of 4048	4856	rundll32.exe	100
PID 4856 wrote to memory of 4048	4856	rundll32.exe	100
PID 4856 wrote to memory of 4048	4856	rundll32.exe	100

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3432
- C:\Users\Admin\AppData\Local\Temp\Purchase order _SIP008.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase order _SIP008.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\Users\Admin\AppData\Local\Temp\4_21\gdvvbotbw.pif
    "C:\Users\Admin\AppData\Local\Temp\4_21\gdvvbotbw.pif" dvcmoef.fhw
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1872
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      PID:3076
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1772
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:4792
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2448
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2840
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1696
- 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:4856
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\4_21\amptgiuxg.gru

Filesize
371KB

MD5
c3aa83222a39f8f2f3bc9306ceb6ba48

SHA1
e9019020fa3ae90698dd8a88bfdd2224ea8cfda3

SHA256
219ea47b9fc665fadc098f6595658e707d81f8427ad8395cac17ed621f145019

SHA512
708601e8e008f9cb7383f278d966425e6b79fda4dea811f571dacf47d1685749e955364ac949b7899f3698846241ba70ba030012e8fdea9e27f4396ce63729d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\4_21\gdvvbotbw.pif

Filesize
906KB

MD5
f28aa08788132e64db4b8918ee2430b1

SHA1
ef32b1023a89dc36d7c5e98e22845fe87c5efef2

SHA256
f99b9fc041c177f0bee2c82d09f451ef0833696111b1b37cbfff8c975232ece2

SHA512
689cf6118061aa9e7d4b78118db99338aa767433df511610d471a989825a84a53119310248ed3870b10e48e77b47c429ef5a276dbc9c4ec53a7588e16093b50f

Download Submit
C:\Users\Admin\AppData\Local\Temp\4_21\kufdgekl.ini

Filesize
41KB

MD5
b9b577b15b95a66c42e474acc0a32876

SHA1
be1932c591413d65fb01a656b398c3c004c1cbfd

SHA256
ccdc69fef237ecb4a3f21261d5310cd6bc19005cc4f0a071407bd5d3ccb4e9d6

SHA512
19d3e4d20c5dd59dfa7424e62de53ee909b6f990c5338b2ae9eca912154c87e011a4d005a10c8d5130f8d9711ff4f3267db8732c10b4151010d4412d83b292ad

Download Submit
memory/1772-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1772-54-0x0000000001A40000-0x0000000001D8A000-memory.dmp

Filesize
3.3MB

Download
memory/1772-57-0x0000000001930000-0x0000000001945000-memory.dmp

Filesize
84KB

Download
memory/1772-53-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3432-58-0x0000000002530000-0x00000000026A7000-memory.dmp

Filesize
1.5MB

Download
memory/3432-63-0x0000000002530000-0x00000000026A7000-memory.dmp

Filesize
1.5MB

Download
memory/3432-67-0x0000000004660000-0x00000000046F7000-memory.dmp

Filesize
604KB

Download
memory/4856-59-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/4856-61-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/4856-62-0x0000000000150000-0x000000000017F000-memory.dmp

Filesize
188KB

Download