formbook | fa0d4eeae6c743ddc44d9664b0e6d44238beff477d1f4e9a560e68026a4264d9

General

Target

$PLUGINSDIR/jsgdacail.dll
Size

29KB
MD5

c3755ba829fe0ac168fde4f1f37ff531
SHA1

e534376fcaf95c9284fb242f8b962a85783e2956
SHA256

50d2bcd4477dc52e7c5dd1d2ee59a78133cb4ae3dd367aadc22053de8137a977
SHA512

d55473705589e789d5f92f79cf1c7dcefb7db21976829fc036593ef5de1eaf02a0c002fc9457b65314bba33bd6a05d06e31341bb147472f2160136e189c0a30b
SSDEEP

768:FYH4sBQJDh7wN4Ce1UtpWOPO8P9MuV7ERTJdG4:FIBQJDKLPO8P9P7E5

Score

10^/10

formbook rv9n discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rv9n

Decoy

olivia-grace.show

zhuwww.com

keiretsu.xyz

olidnh.space

searuleansec.com

2fastrepair.com

brooklynmetalroof.com

scodol.com

novaprint.pro

the-loaner.com

nextroundscap.com

zbwlggs.com

internetautodealer.com

xn--tornrealestate-ekb.com

yunjiuhuo.com

skandinaviskakryptobanken.com

coxivarag.rest

ophthalmologylab.com

zzzzgjcdbqnn98.net

doeful.com

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
behavioral3/memory/2336-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2336-5-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2488-10-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 764 set thread context of 2336	764	rundll32.exe	32
PID 2336 set thread context of 1196	2336	rundll32.exe	21
PID 2488 set thread context of 1196	2488	control.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	control.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2336	rundll32.exe
2336	rundll32.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2336	rundll32.exe
2336	rundll32.exe
2336	rundll32.exe
2488	control.exe
2488	control.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	rundll32.exe
Token: SeDebugPrivilege	2488	control.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 2364 wrote to memory of 764	2364	rundll32.exe	31
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 764 wrote to memory of 2336	764	rundll32.exe	32
PID 1196 wrote to memory of 2488	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2488	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2488	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2488	1196	Explorer.EXE	33
PID 2488 wrote to memory of 2464	2488	control.exe	34
PID 2488 wrote to memory of 2464	2488	control.exe	34
PID 2488 wrote to memory of 2464	2488	control.exe	34
PID 2488 wrote to memory of 2464	2488	control.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsgdacail.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsgdacail.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:764
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsgdacail.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2336
- C:\Windows\SysWOW64\control.exe
  "C:\Windows\SysWOW64\control.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:2488
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2464

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/764-0-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/764-2-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/1196-7-0x0000000006520000-0x0000000006687000-memory.dmp

Filesize
1.4MB

Download
memory/1196-11-0x0000000006520000-0x0000000006687000-memory.dmp

Filesize
1.4MB

Download
memory/2336-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2336-3-0x00000000020E0000-0x00000000023E3000-memory.dmp

Filesize
3.0MB

Download
memory/2336-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2336-6-0x00000000001F0000-0x0000000000204000-memory.dmp

Filesize
80KB

Download
memory/2488-9-0x0000000000770000-0x000000000078F000-memory.dmp

Filesize
124KB

Download
memory/2488-8-0x0000000000770000-0x000000000078F000-memory.dmp

Filesize
124KB

Download
memory/2488-10-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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