formbook | 2fad0c1405a98d28710bc60f6c698f67551eb8ac82159809c63c954186f1b831

General

Target

21 de agosto Nueva solicitud de cotización.exe
Size

910KB
MD5

14089f35edb31d10e2e9619ee5008159
SHA1

f75f2aec3c32d5fa43ce9861d273ea9762fa8386
SHA256

d9993a3a31c12b8f8c15f571680a14fb426e28ecd130430a93e3b3cd34563ac0
SHA512

7e4a759ca47f8dadb42f39e51d5096a958fbe659ed67c344109c086f36942fb1c5609547e721798ee8505ca13182145d87ed65af5b1069c6c44ec35cc0dd7e2b
SSDEEP

12288:CG8Dc9F3nC0Py3gAhvKWi/ZDPOB/fXgGgm+hWVqpCyyPqqFizttIOIFye2YX6TZd:CGqi/ZYpq/CnFQt5Re2A6TcYCS4sfD

Score

10^/10

formbook gz92 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gz92

Decoy

ayurvedichealthformulas.com

plazaconstrutora.com

nat-hetong.info

eapdigital.com

ibluebaytvwdshop.com

committable.com

escapesbyek.com

mywebdesigner.pro

jianianhong.com

benvenutoqui.com

beiyet.com

theartofgifs.com

mbwvyksnk.icu

nshahwelfare.com

hhhservice.com

thechaibali.com

travelscreen.expert

best123-movies.com

leiahin.com

runplay11.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/2560-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2560-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2948	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2560 set thread context of 1184	2560	21 de agosto Nueva solicitud de cotización.exe	21
PID 2404 set thread context of 1184	2404	cmstp.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	21 de agosto Nueva solicitud de cotización.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2560	21 de agosto Nueva solicitud de cotización.exe
2560	21 de agosto Nueva solicitud de cotización.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe
2404	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2560	21 de agosto Nueva solicitud de cotización.exe
2560	21 de agosto Nueva solicitud de cotización.exe
2560	21 de agosto Nueva solicitud de cotización.exe
2404	cmstp.exe
2404	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2560	21 de agosto Nueva solicitud de cotización.exe
Token: SeDebugPrivilege	2404	cmstp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 2720 wrote to memory of 2560	2720	21 de agosto Nueva solicitud de cotización.exe	30
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2404	1184	Explorer.EXE	31
PID 2404 wrote to memory of 2948	2404	cmstp.exe	32
PID 2404 wrote to memory of 2948	2404	cmstp.exe	32
PID 2404 wrote to memory of 2948	2404	cmstp.exe	32
PID 2404 wrote to memory of 2948	2404	cmstp.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\21 de agosto Nueva solicitud de cotización.exe
  "C:\Users\Admin\AppData\Local\Temp\21 de agosto Nueva solicitud de cotización.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Users\Admin\AppData\Local\Temp\21 de agosto Nueva solicitud de cotización.exe
    "C:\Users\Admin\AppData\Local\Temp\21 de agosto Nueva solicitud de cotización.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2560
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:2404
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\21 de agosto Nueva solicitud de cotización.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2948

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/1184-18-0x0000000003F00000-0x0000000004100000-memory.dmp

Filesize
2.0MB

Download
memory/1184-23-0x0000000007540000-0x00000000076AF000-memory.dmp

Filesize
1.4MB

Download
memory/1184-19-0x0000000007540000-0x00000000076AF000-memory.dmp

Filesize
1.4MB

Download
memory/2404-22-0x00000000006D0000-0x00000000006E8000-memory.dmp

Filesize
96KB

Download
memory/2404-20-0x00000000006D0000-0x00000000006E8000-memory.dmp

Filesize
96KB

Download
memory/2560-17-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2560-14-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2560-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2560-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2560-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2720-13-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2720-6-0x0000000005690000-0x0000000005746000-memory.dmp

Filesize
728KB

Download
memory/2720-7-0x0000000000E00000-0x0000000000E48000-memory.dmp

Filesize
288KB

Download
memory/2720-0-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/2720-5-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2720-4-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/2720-3-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2720-2-0x0000000000330000-0x0000000000348000-memory.dmp

Filesize
96KB

Download
memory/2720-1-0x00000000013E0000-0x00000000014CA000-memory.dmp

Filesize
936KB

Download

Analysis

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