formbook | 56122070a3bdb1f168cbae330d58b9c268700509420d2670ccafd01221b45751

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2022 05:57

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General

Target

files/3.exe
Size

636KB
MD5

5e1e0f573490a4d5e3daed2b4ef597cf
SHA1

14a3833a1a3788f9869cfec18bf0f5e96fd6582b
SHA256

c6cc9eb1d60c3e355950bdd5e54f87f2d3536d6e36a6283d83fb218ef30c1801
SHA512

1e0193f1d422f1c6c85f0830221cebead9cffeb602ce91f4731d47ea84255c1cd6c2974d2c0f0d49d16fc77d2b9466a12e8d20bdd562c9cd99f9980662a604bd

Score

10^/10

formbook st0 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

st0

Decoy

link23.info

perfecto-intl.com

550194.top

ceoes.com

pill-sure.com

wakasan.info

momweed.biz

dmcee.com

lcltravels.com

onlinexhibition.com

lmdbshow.com

totamedia.com

unitedobth.com

twfitzone.com

whiteandbluemusic.com

businessbuh.site

mihalstkeowntrodquimp.win

jbcmarrakech.com

bbab1.com

realtec-project.com

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral18/memory/4308-133-0x0000000000000000-mapping.dmp	formbook
behavioral18/memory/4308-135-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral18/memory/4308-141-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral18/memory/4452-143-0x0000000000380000-0x00000000003AA000-memory.dmp	formbook
behavioral18/memory/4452-148-0x0000000000380000-0x00000000003AA000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4308 set thread context of 2372	4308	3.exe	36
PID 4452 set thread context of 2372	4452	colorcpl.exe	36

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 56 IoCs

pid	Process
4308	3.exe
4308	3.exe
4308	3.exe
4308	3.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe
4452	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2372	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4308	3.exe
4308	3.exe
4308	3.exe
4452	colorcpl.exe
4452	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4308	3.exe
Token: SeDebugPrivilege	4452	colorcpl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3196	3.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 3196 wrote to memory of 4308	3196	3.exe	81
PID 2372 wrote to memory of 4452	2372	Explorer.EXE	82
PID 2372 wrote to memory of 4452	2372	Explorer.EXE	82
PID 2372 wrote to memory of 4452	2372	Explorer.EXE	82
PID 4452 wrote to memory of 1016	4452	colorcpl.exe	83
PID 4452 wrote to memory of 1016	4452	colorcpl.exe	83
PID 4452 wrote to memory of 1016	4452	colorcpl.exe	83

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\files\3.exe
  "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Users\Admin\AppData\Local\Temp\files\3.exe
    "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4308
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
    3⤵
    PID:1016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2372-139-0x0000000003270000-0x0000000003337000-memory.dmp

Filesize
796KB

Download
memory/2372-149-0x0000000008AE0000-0x0000000008B99000-memory.dmp

Filesize
740KB

Download
memory/2372-147-0x0000000008AE0000-0x0000000008B99000-memory.dmp

Filesize
740KB

Download
memory/3196-134-0x0000000002360000-0x0000000002366000-memory.dmp

Filesize
24KB

Download
memory/3196-132-0x0000000002360000-0x0000000002366000-memory.dmp

Filesize
24KB

Download
memory/4308-141-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4308-138-0x0000000000A50000-0x0000000000A64000-memory.dmp

Filesize
80KB

Download
memory/4308-137-0x0000000000A90000-0x0000000000DDA000-memory.dmp

Filesize
3.3MB

Download
memory/4308-135-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4452-142-0x0000000000220000-0x0000000000239000-memory.dmp

Filesize
100KB

Download
memory/4452-143-0x0000000000380000-0x00000000003AA000-memory.dmp

Filesize
168KB

Download
memory/4452-145-0x00000000024F0000-0x000000000283A000-memory.dmp

Filesize
3.3MB

Download
memory/4452-146-0x00000000023D0000-0x0000000002463000-memory.dmp

Filesize
588KB

Download
memory/4452-148-0x0000000000380000-0x00000000003AA000-memory.dmp

Filesize
168KB

Download