formbook | 72f68fe89853d3bf944ff39083bd86d7e6511724cf1a0414b4ee3f79f11a3df6

General

Target

$PLUGINSDIR/lcfqe.dll
Size

48KB
MD5

849b29a5363106f1ec41b2b6bfce6b6d
SHA1

bfdccdb25cbcf5bb55e42169f542513dd6881139
SHA256

e3dfe132ec3fcfcbb1146154212ba1b1c4221cea1b79cded3cab7fc65c3cc54b
SHA512

28d568102227e1e3c12ff91dff5a8dc1c119d8d21c062706f8a5e561da09b089c284feaa49040fbadc7e1ff911563c7fdd13866af67a1c8256cd44af312f5074
SSDEEP

768:Fg7dbS3GVz7e1MPkrtzs5tjUKH1KJpdxCBrhLxCKFU:Fg7+0z7e1IkRwjrHAvdwBr9xCK2

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 family
formbook

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral3/memory/1084-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1084-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/1084-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2732-15-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1740 set thread context of 1084	1740	rundll32.exe	30
PID 1084 set thread context of 1236	1084	rundll32.exe	20
PID 1084 set thread context of 1236	1084	rundll32.exe	20
PID 2732 set thread context of 1236	2732	msdt.exe	20

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	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1084	rundll32.exe
1084	rundll32.exe
1084	rundll32.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe
2732	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1084	rundll32.exe
1084	rundll32.exe
1084	rundll32.exe
1084	rundll32.exe
2732	msdt.exe
2732	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1084	rundll32.exe
Token: SeDebugPrivilege	2732	msdt.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1236 wrote to memory of 2732	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2732	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2732	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2732	1236	Explorer.EXE	31
PID 2732 wrote to memory of 2852	2732	msdt.exe	32
PID 2732 wrote to memory of 2852	2732	msdt.exe	32
PID 2732 wrote to memory of 2852	2732	msdt.exe	32
PID 2732 wrote to memory of 2852	2732	msdt.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lcfqe.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lcfqe.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1740
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lcfqe.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1084
- 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:2732
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2852

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/1084-10-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/1084-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1084-2-0x00000000020D0000-0x00000000023D3000-memory.dmp

Filesize
3.0MB

Download
memory/1084-5-0x0000000000220000-0x0000000000234000-memory.dmp

Filesize
80KB

Download
memory/1084-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1084-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1236-6-0x0000000003FC0000-0x00000000040C0000-memory.dmp

Filesize
1024KB

Download
memory/1236-12-0x0000000005090000-0x000000000516E000-memory.dmp

Filesize
888KB

Download
memory/1236-7-0x0000000004E00000-0x0000000004EFA000-memory.dmp

Filesize
1000KB

Download
memory/1236-11-0x0000000004E00000-0x0000000004EFA000-memory.dmp

Filesize
1000KB

Download
memory/1236-16-0x0000000005090000-0x000000000516E000-memory.dmp

Filesize
888KB

Download
memory/1740-0-0x00000000752DC000-0x00000000752DE000-memory.dmp

Filesize
8KB

Download
memory/2732-13-0x0000000000CF0000-0x0000000000DE4000-memory.dmp

Filesize
976KB

Download
memory/2732-14-0x0000000000CF0000-0x0000000000DE4000-memory.dmp

Filesize
976KB

Download
memory/2732-15-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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