formbook | 0b9a2a5a1d8492d4f5bd8737cc9ff67e2d00c4c1b815da88a471661ce4f3dd10

General

Target

$PLUGINSDIR/dvxpshe.dll
Size

66KB
MD5

45f315f24046abc7cbe07a0f08a500b4
SHA1

5fcbdb3743ac2497181bd800622b98033e0232bd
SHA256

231d2605fc4ba8b8abed10831692542931ad6e7f647225376723cf385695f1bf
SHA512

a2df0a846c508318eb0eee02921c7f345aaaed5fcc25bee179eb092586c145b8348fb232a22a349fe2bcfa9166778c5812062ce89782d7f8fb2de56497f10a31
SSDEEP

768:6PTL7gePJuhk15raztjcwg0Jm8jYMLZdSDoeA/BUi0O281TbUfszDD3VlcwLVj:6bL7geRubzt/gyj1LZqOvRbUfsbrTR

Score

10^/10

formbook a6hj discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a6hj

Decoy

unlocking.solutions

porscheofac.com

alinadaubermont.com

firstcallindia.xyz

sanot.top

lamborghini.my.id

vbncbcbcncnbcnbcnbcncnb.net

firstclassescapes.com

bestblondehairstylist.com

cncdt.biz

finkeng.xyz

unitedbcttles.com

redbaby.store

5donline.com

theonewayclothing.com

jgcenterpriseholdings.com

hairshackvb.com

thepunchypineapple.com

fm-conseils.fr

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
behavioral3/memory/2124-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2124-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2944-9-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1692 set thread context of 2124	1692	rundll32.exe	31
PID 2124 set thread context of 1204	2124	rundll32.exe	21
PID 2944 set thread context of 1204	2944	wlanext.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
2124	rundll32.exe
2124	rundll32.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe
2944	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2124	rundll32.exe
2124	rundll32.exe
2124	rundll32.exe
2944	wlanext.exe
2944	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	rundll32.exe
Token: SeDebugPrivilege	2944	wlanext.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1800 wrote to memory of 1692	1800	rundll32.exe	30
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1692 wrote to memory of 2124	1692	rundll32.exe	31
PID 1204 wrote to memory of 2944	1204	Explorer.EXE	32
PID 1204 wrote to memory of 2944	1204	Explorer.EXE	32
PID 1204 wrote to memory of 2944	1204	Explorer.EXE	32
PID 1204 wrote to memory of 2944	1204	Explorer.EXE	32
PID 2944 wrote to memory of 2092	2944	wlanext.exe	33
PID 2944 wrote to memory of 2092	2944	wlanext.exe	33
PID 2944 wrote to memory of 2092	2944	wlanext.exe	33
PID 2944 wrote to memory of 2092	2944	wlanext.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\dvxpshe.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\dvxpshe.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1692
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\dvxpshe.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2124
- 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:2944
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2092

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

memory/1204-6-0x0000000007AE0000-0x0000000007C86000-memory.dmp

Filesize
1.6MB

Download
memory/1204-10-0x0000000007AE0000-0x0000000007C86000-memory.dmp

Filesize
1.6MB

Download
memory/1692-0-0x0000000010010000-0x0000000010012000-memory.dmp

Filesize
8KB

Download
memory/2124-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2124-2-0x0000000002100000-0x0000000002403000-memory.dmp

Filesize
3.0MB

Download
memory/2124-5-0x00000000001B0000-0x00000000001C4000-memory.dmp

Filesize
80KB

Download
memory/2124-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2944-8-0x0000000000740000-0x0000000000756000-memory.dmp

Filesize
88KB

Download
memory/2944-7-0x0000000000740000-0x0000000000756000-memory.dmp

Filesize
88KB

Download
memory/2944-9-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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