formbook | 08522edec76d7f0b00ae43564ccd77729cb5e07f0e8111f76f3cdf5496fe35f8

General

Target

formbook.exe
Size

181KB
MD5

93918c623317234901e5846540f3a43d
SHA1

a5b49aea492de5430b09fa6c1e07a43a28c92b9d
SHA256

8b23c3ddd235c8708c47bf3eec883a6f8ec12656680648400cb4733d9a14e762
SHA512

c85af20af3aaabc9dd0e7da5b6dabb923d02c29360b8edd9ce31199311b9723f59a5ba13cf344f5891f4a691f6759954de11c12c5005cc80a9eb87567c274153
SSDEEP

3072:TDhzK7wjZWfpsOjxl47KVrK6IUxg2ELN/pP8tGzb4JHg:fhEwYNxy7erK6IUhCt2kzb4JH

Score

10^/10

formbook ga4 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ga4

Decoy

rivercitygoldens.com

seattlebarkery.com

jxsxdb.com

bet365o1.com

mynexthomedfw.com

scheduleyourintentions.com

vestingfacts.com

angelicasanchezpsicologa.com

constructorariedel.com

myabron.com

askthepotato.com

cuscases.com

dlrioata.com

ilikecircles.com

teamsters401kupsplan.com

79dzb.com

simoneventpros.com

cloversonglyrics.com

intansuper.com

gamefacesydney.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/1728-2-0x0000000000EF0000-0x0000000000F1E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2152	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 1204	1728	formbook.exe	21
PID 2392 set thread context of 1204	2392	rundll32.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	cmd.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
1728	formbook.exe
1728	formbook.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe
2392	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1728	formbook.exe
1728	formbook.exe
1728	formbook.exe
2392	rundll32.exe
2392	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	formbook.exe
Token: SeDebugPrivilege	2392	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 1204 wrote to memory of 2392	1204	Explorer.EXE	30
PID 2392 wrote to memory of 2152	2392	rundll32.exe	31
PID 2392 wrote to memory of 2152	2392	rundll32.exe	31
PID 2392 wrote to memory of 2152	2392	rundll32.exe	31
PID 2392 wrote to memory of 2152	2392	rundll32.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\formbook.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:1728
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:2392
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2152

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/1204-3-0x0000000004B30000-0x0000000004C28000-memory.dmp

Filesize
992KB

Download
memory/1204-8-0x0000000004B30000-0x0000000004C28000-memory.dmp

Filesize
992KB

Download
memory/1728-0-0x0000000000750000-0x0000000000A53000-memory.dmp

Filesize
3.0MB

Download
memory/1728-2-0x0000000000EF0000-0x0000000000F1E000-memory.dmp

Filesize
184KB

Download
memory/1728-1-0x0000000000F0E000-0x0000000000F0F000-memory.dmp

Filesize
4KB

Download
memory/2392-5-0x0000000000E50000-0x0000000000E5E000-memory.dmp

Filesize
56KB

Download
memory/2392-4-0x0000000000E50000-0x0000000000E5E000-memory.dmp

Filesize
56KB

Download
memory/2392-7-0x0000000000E50000-0x0000000000E5E000-memory.dmp

Filesize
56KB

Download

Analysis

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