formbook | 50dcadbe8c9b041fd0b2184fa131b09c1067b10920352996d18629410d366b5f

General

Target

dump.exe
Size

181KB
MD5

d2f440ffe559beb7145d3b8836b90594
SHA1

d9f44fe550b7452c2bcb6b77666256816bc2e21c
SHA256

7c5ce20cff54b08358d8d3651b4f4484a503f52fd130c03373cfadf1639af98c
SHA512

c5e370dbc03d622531b04544227e7d90626b239dd41aeca73311052f111a7d76b3a07856c16c55614856543a0e6ab6ff5b7079d3925c9c8d6768ac0ed289a19c
SSDEEP

3072:exf/OhHCx8QPS83jLrsu0KWCJ2gbeGD1OAbBNJZju5vbfe:eWx0SqjLrsRKWCJ/eGD1OAVRjuxbW

Score

10^/10

formbook cb3b discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cb3b

Decoy

lghglzcnkx.net

bellezaperfecta.company

thelisaiboldteam.com

newzdoozy.com

prospectsolucoes.com

altmartshop.com

webbresults.com

abnehmen-erfolgreich.net

tammygauthier.com

nelly-pasquier.com

footballrevolutionbyluna.com

primeassociatesca.com

lxzhub.net

jhaalz.com

fribetong.com

realkings.net

kamalameats.com

tyuyou.net

katiecorcoran.net

rigatoniscc.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/1672-2-0x0000000000EE0000-0x0000000000F0E000-memory.dmp	formbook
behavioral1/memory/1672-5-0x0000000000EE0000-0x0000000000F0E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2796	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 1200	1672	dump.exe	21
PID 1672 set thread context of 1200	1672	dump.exe	21
PID 2140 set thread context of 1200	2140	msdt.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	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1672	dump.exe
1672	dump.exe
1672	dump.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe
2140	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1672	dump.exe
1672	dump.exe
1672	dump.exe
1672	dump.exe
2140	msdt.exe
2140	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1672	dump.exe
Token: SeDebugPrivilege	2140	msdt.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 2140	1200	Explorer.EXE	28
PID 1200 wrote to memory of 2140	1200	Explorer.EXE	28
PID 1200 wrote to memory of 2140	1200	Explorer.EXE	28
PID 1200 wrote to memory of 2140	1200	Explorer.EXE	28
PID 2140 wrote to memory of 2796	2140	msdt.exe	29
PID 2140 wrote to memory of 2796	2140	msdt.exe	29
PID 2140 wrote to memory of 2796	2140	msdt.exe	29
PID 2140 wrote to memory of 2796	2140	msdt.exe	29

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\dump.exe
  "C:\Users\Admin\AppData\Local\Temp\dump.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:2140
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\dump.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2796

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/1200-3-0x0000000004680000-0x000000000479A000-memory.dmp

Filesize
1.1MB

Download
memory/1200-7-0x0000000005180000-0x000000000527E000-memory.dmp

Filesize
1016KB

Download
memory/1200-10-0x0000000005180000-0x000000000527E000-memory.dmp

Filesize
1016KB

Download
memory/1672-0-0x00000000006C0000-0x00000000009C3000-memory.dmp

Filesize
3.0MB

Download
memory/1672-1-0x0000000000EFE000-0x0000000000EFF000-memory.dmp

Filesize
4KB

Download
memory/1672-2-0x0000000000EE0000-0x0000000000F0E000-memory.dmp

Filesize
184KB

Download
memory/1672-5-0x0000000000EE0000-0x0000000000F0E000-memory.dmp

Filesize
184KB

Download
memory/1672-4-0x0000000000EFE000-0x0000000000EFF000-memory.dmp

Filesize
4KB

Download
memory/2140-8-0x00000000009E0000-0x0000000000AD4000-memory.dmp

Filesize
976KB

Download
memory/2140-9-0x00000000009E0000-0x0000000000AD4000-memory.dmp

Filesize
976KB

Download

Analysis

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