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/1312-65-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2004-71-0x00000000000D0000-0x00000000000FE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1520 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

CT14876.exe

pid process

1948 CT14876.exe

pid	process
1520	cmd.exe

pid	process
1948	CT14876.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

CT14876.exeCT14876.execmstp.exe

description	pid	process	target process
PID 1948 set thread context of 1312	1948	CT14876.exe	CT14876.exe
PID 1312 set thread context of 1208	1312	CT14876.exe	Explorer.EXE
PID 2004 set thread context of 1208	2004	cmstp.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.execmstp.exe

pid	process
1312	CT14876.exe
1312	CT14876.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe
2004	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

CT14876.exeCT14876.execmstp.exe

pid process

1948 CT14876.exe
1312 CT14876.exe
1312 CT14876.exe
1312 CT14876.exe
2004 cmstp.exe
2004 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CT14876.execmstp.exe

description pid process

Token: SeDebugPrivilege 1312 CT14876.exe
Token: SeDebugPrivilege 2004 cmstp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE

pid	process
1208	Explorer.EXE

pid	process
1948	CT14876.exe
1312	CT14876.exe
1312	CT14876.exe
1312	CT14876.exe
2004	cmstp.exe
2004	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1312	CT14876.exe
Token: SeDebugPrivilege	2004	cmstp.exe

pid	process
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE

pid	process
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

CT14876.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1948 wrote to memory of 1312	1948	CT14876.exe	CT14876.exe
PID 1948 wrote to memory of 1312	1948	CT14876.exe	CT14876.exe
PID 1948 wrote to memory of 1312	1948	CT14876.exe	CT14876.exe
PID 1948 wrote to memory of 1312	1948	CT14876.exe	CT14876.exe
PID 1948 wrote to memory of 1312	1948	CT14876.exe	CT14876.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 2004	1208	Explorer.EXE	cmstp.exe
PID 2004 wrote to memory of 1520	2004	cmstp.exe	cmd.exe
PID 2004 wrote to memory of 1520	2004	cmstp.exe	cmd.exe
PID 2004 wrote to memory of 1520	2004	cmstp.exe	cmd.exe
PID 2004 wrote to memory of 1520	2004	cmstp.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:1208
- 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:1948
- - 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:1312
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1440
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\CT14876.exe"
    3⤵
    - Deletes itself
    PID:1520

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\nsd8892.tmp\hryz0egk3c.dll

MD5
a8bb4472c2229a000b0a50aec60b307e

SHA1
d686149a4a5ecfd1c13493ce740fe0e4d33ca46c

SHA256
89430cdca33183e7453b9b445be744b158f121fb9c074a2b30325d8668862fe9

SHA512
cf5ca15d1a07d575a44df4d795afb319e9230b5d4a0107ca675bf2c6c6e5b834317fdac3a307b46fb53473ff21eec3d93abadab58941fba757c7d648e27ed168

Download Submit
memory/1208-75-0x00000000061D0000-0x0000000006288000-memory.dmp

Filesize
736KB

Download
memory/1208-67-0x00000000044A0000-0x00000000045C6000-memory.dmp

Filesize
1.1MB

Download
memory/1312-62-0x000000000041EAF0-mapping.dmp

Download
memory/1312-64-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/1312-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1312-66-0x0000000000350000-0x0000000000364000-memory.dmp

Filesize
80KB

Download
memory/1520-72-0x0000000000000000-mapping.dmp

Download
memory/1948-63-0x0000000000440000-0x0000000000442000-memory.dmp

Filesize
8KB

Download
memory/1948-60-0x0000000075511000-0x0000000075513000-memory.dmp

Filesize
8KB

Download
memory/2004-70-0x0000000000F60000-0x0000000000F78000-memory.dmp

Filesize
96KB

Download
memory/2004-71-0x00000000000D0000-0x00000000000FE000-memory.dmp

Filesize
184KB

Download
memory/2004-68-0x0000000000000000-mapping.dmp

Download
memory/2004-73-0x0000000000A90000-0x0000000000D93000-memory.dmp

Filesize
3.0MB

Download
memory/2004-74-0x0000000000990000-0x0000000000A23000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads