formbook | 5313ca84959a3d88973ad5b85acc66e268c3e8874d5d6f21fcd4a4c1a7628496

General

Target

CT14876.exe
Size

225KB
MD5

a2cc53c25b8ae51eab431b18699da8fa
SHA1

8a422c72ad1b018ad7dcda36f8fa328bd2c6bfbc
SHA256

5313ca84959a3d88973ad5b85acc66e268c3e8874d5d6f21fcd4a4c1a7628496
SHA512

69ff51431b3f3fa71223d88df30a1c4b2d32b38afb081cafcf14484caad548e8626ca099b6ad38852b9f9d340af0f790868995564f062de78926f0a29d45d2b5

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.knighttechinca.com/dxe/

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1172-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1984-71-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

268 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

CT14876.exe

pid process

1652 CT14876.exe

pid	process
268	cmd.exe

pid	process
1652	CT14876.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

CT14876.exeCT14876.exehelp.exe

description	pid	process	target process
PID 1652 set thread context of 1172	1652	CT14876.exe	CT14876.exe
PID 1172 set thread context of 1220	1172	CT14876.exe	Explorer.EXE
PID 1984 set thread context of 1220	1984	help.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

CT14876.exehelp.exe

pid	process
1172	CT14876.exe
1172	CT14876.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe
1984	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

CT14876.exeCT14876.exehelp.exe

pid process

1652 CT14876.exe
1172 CT14876.exe
1172 CT14876.exe
1172 CT14876.exe
1984 help.exe
1984 help.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CT14876.exehelp.exe

description pid process

Token: SeDebugPrivilege 1172 CT14876.exe
Token: SeDebugPrivilege 1984 help.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE
1220 Explorer.EXE

pid	process
1220	Explorer.EXE

pid	process
1652	CT14876.exe
1172	CT14876.exe
1172	CT14876.exe
1172	CT14876.exe
1984	help.exe
1984	help.exe

description	pid	process
Token: SeDebugPrivilege	1172	CT14876.exe
Token: SeDebugPrivilege	1984	help.exe

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE
1220	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

CT14876.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 1652 wrote to memory of 1172	1652	CT14876.exe	CT14876.exe
PID 1652 wrote to memory of 1172	1652	CT14876.exe	CT14876.exe
PID 1652 wrote to memory of 1172	1652	CT14876.exe	CT14876.exe
PID 1652 wrote to memory of 1172	1652	CT14876.exe	CT14876.exe
PID 1652 wrote to memory of 1172	1652	CT14876.exe	CT14876.exe
PID 1220 wrote to memory of 1984	1220	Explorer.EXE	help.exe
PID 1220 wrote to memory of 1984	1220	Explorer.EXE	help.exe
PID 1220 wrote to memory of 1984	1220	Explorer.EXE	help.exe
PID 1220 wrote to memory of 1984	1220	Explorer.EXE	help.exe
PID 1984 wrote to memory of 268	1984	help.exe	cmd.exe
PID 1984 wrote to memory of 268	1984	help.exe	cmd.exe
PID 1984 wrote to memory of 268	1984	help.exe	cmd.exe
PID 1984 wrote to memory of 268	1984	help.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\CT14876.exe
  "C:\Users\Admin\AppData\Local\Temp\CT14876.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Users\Admin\AppData\Local\Temp\CT14876.exe
    "C:\Users\Admin\AppData\Local\Temp\CT14876.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1172
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1276
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2000
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1996
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\CT14876.exe"
    3⤵
    - Deletes itself
    PID:268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsn6FD4.tmp\hryz0egk3c.dll

MD5
a8bb4472c2229a000b0a50aec60b307e

SHA1
d686149a4a5ecfd1c13493ce740fe0e4d33ca46c

SHA256
89430cdca33183e7453b9b445be744b158f121fb9c074a2b30325d8668862fe9

SHA512
cf5ca15d1a07d575a44df4d795afb319e9230b5d4a0107ca675bf2c6c6e5b834317fdac3a307b46fb53473ff21eec3d93abadab58941fba757c7d648e27ed168

Download Submit
memory/268-69-0x0000000000000000-mapping.dmp

Download
memory/1172-63-0x000000000041EAF0-mapping.dmp

Download
memory/1172-65-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Filesize
3.0MB

Download
memory/1172-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1172-66-0x0000000000340000-0x0000000000354000-memory.dmp

Filesize
80KB

Download
memory/1220-67-0x0000000004A20000-0x0000000004B30000-memory.dmp

Filesize
1.1MB

Download
memory/1220-74-0x0000000006F60000-0x00000000070F0000-memory.dmp

Filesize
1.6MB

Download
memory/1652-60-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/1652-62-0x00000000006F0000-0x00000000006F2000-memory.dmp

Filesize
8KB

Download
memory/1984-68-0x0000000000000000-mapping.dmp

Download
memory/1984-70-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/1984-71-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1984-72-0x0000000000820000-0x0000000000B23000-memory.dmp

Filesize
3.0MB

Download
memory/1984-73-0x0000000000500000-0x0000000000593000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads