formbook | 8dfc90be23e0175d7920f4ad22cc376790b1553e3db45c09edf62ce01a3d1425

General

Target

win32.exe
Size

1.4MB
MD5

5da09caaae82f21d0eaca876d498ee03
SHA1

977de5ea373d1366e8f1cd1a8b77361ec995e7fd
SHA256

afc6b7fc520feb049954946e10cd3d43d55b2d4fe80b679af39c5106c87d54d3
SHA512

3f2fc9f251293e520a6ff1d2230f9e5b90ac3881a5382332a3c86acb46d5cd3a976fd501fad29ce2f16fdb033e2be2ceed0d28744daa1938fc3d6fd149a76276
SSDEEP

24576:uywX6Z8pwswlTbMNLcuzEn2AWTnD65pBT2fXEvO9:PM66wlTUFE2AW7O5PT2/

Score

10^/10

formbook f3d0 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

f3d0

Decoy

clio5.com

waterbabylessons.com

magictouchbygg.com

devonjoymorris.com

johndler.com

jokysun.com

coffee-sci.com

govtexamin.com

afreshsheenstart.com

eventhorizon.systems

thelouxco.com

hairtherapycollection.com

popashield.com

optutus.com

100rupeetrip.com

petempirellc.com

intellektusdomains.com

rofe-emun.net

instore.express

flifeadventure.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2556-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2556-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1660	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2556	2668	win32.exe	31
PID 2556 set thread context of 1180	2556	win32.exe	21
PID 2304 set thread context of 1180	2304	cmd.exe	21

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	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2556	win32.exe
2556	win32.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe
2304	cmd.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2556	win32.exe
2556	win32.exe
2556	win32.exe
2304	cmd.exe
2304	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	win32.exe
Token: SeDebugPrivilege	2304	cmd.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 2668 wrote to memory of 2556	2668	win32.exe	31
PID 1180 wrote to memory of 2304	1180	Explorer.EXE	32
PID 1180 wrote to memory of 2304	1180	Explorer.EXE	32
PID 1180 wrote to memory of 2304	1180	Explorer.EXE	32
PID 1180 wrote to memory of 2304	1180	Explorer.EXE	32
PID 2304 wrote to memory of 1660	2304	cmd.exe	33
PID 2304 wrote to memory of 1660	2304	cmd.exe	33
PID 2304 wrote to memory of 1660	2304	cmd.exe	33
PID 2304 wrote to memory of 1660	2304	cmd.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\win32.exe
  "C:\Users\Admin\AppData\Local\Temp\win32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Users\Admin\AppData\Local\Temp\win32.exe
    "C:\Users\Admin\AppData\Local\Temp\win32.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:2304
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\win32.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1660

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

Loading Replay Monitor...

Downloads

memory/1180-18-0x00000000073D0000-0x00000000074DC000-memory.dmp

Filesize
1.0MB

Download
memory/1180-22-0x0000000003F00000-0x0000000004000000-memory.dmp

Filesize
1024KB

Download
memory/1180-21-0x00000000073D0000-0x00000000074DC000-memory.dmp

Filesize
1.0MB

Download
memory/2304-20-0x000000004A9F0000-0x000000004AA3C000-memory.dmp

Filesize
304KB

Download
memory/2304-19-0x000000004A9F0000-0x000000004AA3C000-memory.dmp

Filesize
304KB

Download
memory/2556-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2556-14-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2556-17-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/2556-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2556-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2556-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2556-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-13-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2668-6-0x0000000005400000-0x00000000054A4000-memory.dmp

Filesize
656KB

Download
memory/2668-7-0x0000000000A10000-0x0000000000A44000-memory.dmp

Filesize
208KB

Download
memory/2668-0-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

Filesize
4KB

Download
memory/2668-5-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2668-4-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

Filesize
4KB

Download
memory/2668-3-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2668-2-0x0000000000430000-0x000000000044E000-memory.dmp

Filesize
120KB

Download
memory/2668-1-0x0000000000C90000-0x0000000000DFE000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing