formbook | 69894b72ab86939a0a2ef7344f00ced587d007df6cf37b4783ae3537b33c125b

Analysis

max time kernel
146s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 14:48

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General

Target

Invoice8252752.exe
Size

318KB
MD5

8ea255af1117e83b0c6c4cd1f7ff4eab
SHA1

4c3870aef757ca5efcdc324239a8744ed20c10b9
SHA256

e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
SHA512

9a4b185b1836683aec23e037377059d6416c204b4d71fc34942eba0f8d8091a24688d3a1a7f737459bd79ace09b601b8cd72de11616e4eef214c12f0ab54a474
SSDEEP

3072:i/2HRMd/qiEcHUFFms+qCNkkiY0ndiH+Q9y+IZrToLpQwATrJd32Q3z84XvZGX:yQRM1f/0FT+k9YuSFKToVQJrJv3fXvw

Score

10^/10

formbook yx5 discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.0

Campaign

yx5

Decoy

ruwbx.com

jasapoleslantai.com

win.xn--io0a7i

ivy0923-aoba.com

petrotaha.com

martinmetlabs.net

centredetherapiebreve.com

pinemountainclubmoderncabin.com

top-tovar.online

wissen-und-kritik.com

preloadmypc.com

client76215.review

mobiledownload.tech

ycphotoshop.com

yimengta.com

bersyedih-4.com

miningbitterweed.info

guitarform.com

dtitc.com

blackhoot.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
behavioral2/memory/3552-0-0x0000000000351000-0x000000000037E000-memory.dmp	formbook
behavioral2/memory/3552-1-0x0000000000350000-0x00000000003A4000-memory.dmp	formbook
behavioral2/memory/3552-2-0x0000000000350000-0x00000000003A4000-memory.dmp	formbook
behavioral2/memory/3552-8-0x0000000000350000-0x00000000003A4000-memory.dmp	formbook
behavioral2/memory/3552-7-0x0000000000351000-0x000000000037E000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\I4D0F6BPPPHH = "C:\\Program Files (x86)\\Ifvg\\colorcplxff4an.exe"	cmd.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3552 set thread context of 3508	3552	Invoice8252752.exe	56
PID 3636 set thread context of 3508	3636	cmd.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Ifvg\colorcplxff4an.exe	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Invoice8252752.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
3552	Invoice8252752.exe
3552	Invoice8252752.exe
3552	Invoice8252752.exe
3552	Invoice8252752.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe
3636	cmd.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3552	Invoice8252752.exe
3552	Invoice8252752.exe
3552	Invoice8252752.exe
3636	cmd.exe
3636	cmd.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3552	Invoice8252752.exe
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE
Token: SeDebugPrivilege	3636	cmd.exe
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 3636	3508	Explorer.EXE	85
PID 3508 wrote to memory of 3636	3508	Explorer.EXE	85
PID 3508 wrote to memory of 3636	3508	Explorer.EXE	85
PID 3636 wrote to memory of 2692	3636	cmd.exe	88
PID 3636 wrote to memory of 2692	3636	cmd.exe	88
PID 3636 wrote to memory of 2692	3636	cmd.exe	88
PID 3636 wrote to memory of 928	3636	cmd.exe	95
PID 3636 wrote to memory of 928	3636	cmd.exe	95
PID 3636 wrote to memory of 928	3636	cmd.exe	95

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Users\Admin\AppData\Local\Temp\Invoice8252752.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice8252752.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:3552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.exe"
  2⤵
  - Adds policy Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3636
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Invoice8252752.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2692
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    - System Location Discovery: System Language Discovery
    PID:928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
C:\Users\Admin\AppData\Roaming\5M-MQPVT\5M-logim.jpeg

Filesize
81KB

MD5
5727535cd08d73abc4da1dc41d1b9c69

SHA1
b790619df61488d6948832855add7e2d1346f341

SHA256
8cb610e4ebff1b025b6d6c0dae5967cf217ab7f6e6c7a193aa9aeace1fa1bedf

SHA512
f1ab5167e7cc00d3f686f57cf90b70ed83a2fbda33d74cb058181f35ac01fa7700a1904fd536e969b285fdd44e3a5dfcdf21d74fae548932ba66d3356063d554

Download Submit
C:\Users\Admin\AppData\Roaming\5M-MQPVT\5M-logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\5M-MQPVT\5M-logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\5M-MQPVT\5M-logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/3508-9-0x0000000003550000-0x0000000003625000-memory.dmp

Filesize
852KB

Download
memory/3508-11-0x0000000009020000-0x0000000009135000-memory.dmp

Filesize
1.1MB

Download
memory/3508-12-0x0000000009020000-0x0000000009135000-memory.dmp

Filesize
1.1MB

Download
memory/3508-3-0x0000000003550000-0x0000000003625000-memory.dmp

Filesize
852KB

Download
memory/3552-8-0x0000000000350000-0x00000000003A4000-memory.dmp

Filesize
336KB

Download
memory/3552-7-0x0000000000351000-0x000000000037E000-memory.dmp

Filesize
180KB

Download
memory/3552-0-0x0000000000351000-0x000000000037E000-memory.dmp

Filesize
180KB

Download
memory/3552-2-0x0000000000350000-0x00000000003A4000-memory.dmp

Filesize
336KB

Download
memory/3552-1-0x0000000000350000-0x00000000003A4000-memory.dmp

Filesize
336KB

Download
memory/3636-6-0x0000000000900000-0x000000000095A000-memory.dmp

Filesize
360KB

Download
memory/3636-4-0x0000000000900000-0x000000000095A000-memory.dmp

Filesize
360KB

Download