formbook | 8af31cc4f0936dcb289eb4474a4c14b05d6f62407e08964b293d3c3a3441d556

General

Target

INV-7182234 PDF.exe
Size

713KB
MD5

62ff7b0794ea1490f930958e19d6a26b
SHA1

6af133db25d9f2183877f7b094fcda32828b30d3
SHA256

167bf768c164ac7181b18d6ce91cd51f7d3cd40470a8c8f67bb4a8e2bf00b65b
SHA512

4e923724d2890cdaa5f652d5fa12d31713f8e9dca9e18eb07e76c6679b1498c513b86b0f2d81a2a0c1905779f068655c889333252d4ac9714222aee42130d126
SSDEEP

12288:uXqgHEGTXTI86bB7o5qwTW7py12qk4h7zJdpDj2UnrbSmnCFdfZtL/wgGgOUBZqQ:uXqyE8s7tck6xP2UrbadZtp

Score

10^/10

formbook gc9 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gc9

Decoy

mahiroglunakliyat.xyz

zhonghemao.com

luxunwrapped.store

dchealthsolutions.com

smoothcupofjoe.com

lavmeantikuman.com

tryvlviscal.com

barefootwildbakery.com

anticoronapreventionshop.com

transactionreview.info

pierdapesoyganeplata.com

stella-tgsei-df-01.com

jagarnat.com

dadadongy.asia

streamload.xyz

lehighvalleytubing.com

happywife101.com

bitcominformatics.com

profxbenefits.com

djskitchenevents.com

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/4328-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4328-17-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/868-22-0x0000000000F90000-0x0000000000FBE000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4380 set thread context of 4328	4380	INV-7182234 PDF.exe	91
PID 4328 set thread context of 3356	4328	INV-7182234 PDF.exe	56
PID 868 set thread context of 3356	868	NETSTAT.EXE	56

System Location Discovery: System Language Discovery 1 TTPs 3 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	INV-7182234 PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
868	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
4380	INV-7182234 PDF.exe
4380	INV-7182234 PDF.exe
4380	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE
868	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4328	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
4328	INV-7182234 PDF.exe
868	NETSTAT.EXE
868	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4380	INV-7182234 PDF.exe
Token: SeDebugPrivilege	4328	INV-7182234 PDF.exe
Token: SeDebugPrivilege	868	NETSTAT.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 4380 wrote to memory of 4328	4380	INV-7182234 PDF.exe	91
PID 3356 wrote to memory of 868	3356	Explorer.EXE	100
PID 3356 wrote to memory of 868	3356	Explorer.EXE	100
PID 3356 wrote to memory of 868	3356	Explorer.EXE	100
PID 868 wrote to memory of 4884	868	NETSTAT.EXE	101
PID 868 wrote to memory of 4884	868	NETSTAT.EXE	101
PID 868 wrote to memory of 4884	868	NETSTAT.EXE	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3356
- C:\Users\Admin\AppData\Local\Temp\INV-7182234 PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\INV-7182234 PDF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Users\Admin\AppData\Local\Temp\INV-7182234 PDF.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4328
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1708
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1784
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2032
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:3772
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1532
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:3464
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1200
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:3248
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:868
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\INV-7182234 PDF.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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/868-22-0x0000000000F90000-0x0000000000FBE000-memory.dmp

Filesize
184KB

Download
memory/868-20-0x0000000000270000-0x000000000027B000-memory.dmp

Filesize
44KB

Download
memory/868-21-0x0000000000270000-0x000000000027B000-memory.dmp

Filesize
44KB

Download
memory/3356-19-0x00000000028F0000-0x0000000002A70000-memory.dmp

Filesize
1.5MB

Download
memory/3356-30-0x0000000008270000-0x0000000008316000-memory.dmp

Filesize
664KB

Download
memory/3356-28-0x0000000008270000-0x0000000008316000-memory.dmp

Filesize
664KB

Download
memory/3356-27-0x0000000008270000-0x0000000008316000-memory.dmp

Filesize
664KB

Download
memory/3356-23-0x00000000028F0000-0x0000000002A70000-memory.dmp

Filesize
1.5MB

Download
memory/4328-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4328-15-0x00000000012D0000-0x000000000161A000-memory.dmp

Filesize
3.3MB

Download
memory/4328-18-0x0000000000C10000-0x0000000000C24000-memory.dmp

Filesize
80KB

Download
memory/4328-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4380-8-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4380-14-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-0-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4380-11-0x00000000093D0000-0x000000000943E000-memory.dmp

Filesize
440KB

Download
memory/4380-10-0x0000000006DE0000-0x0000000006E66000-memory.dmp

Filesize
536KB

Download
memory/4380-9-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-7-0x00000000068E0000-0x000000000697C000-memory.dmp

Filesize
624KB

Download
memory/4380-6-0x0000000005230000-0x000000000523A000-memory.dmp

Filesize
40KB

Download
memory/4380-5-0x0000000005100000-0x000000000510A000-memory.dmp

Filesize
40KB

Download
memory/4380-4-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-3-0x0000000005050000-0x00000000050E2000-memory.dmp

Filesize
584KB

Download
memory/4380-2-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4380-1-0x00000000005C0000-0x0000000000678000-memory.dmp

Filesize
736KB

Download

Analysis

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