formbook | ef911d4f6162d25b42b36bd71b99dd256565a68410c707ee29c40a01f3797036

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 00:12

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General

Target

DHL PACKAGE - PDF.exe
Size

395KB
MD5

863bf0dfa1169706f566c070a1e11256
SHA1

77175726680e40eeefdad0578a1d3377486d9fff
SHA256

a102b644fd134778f28e1105e4645e84ff4d05687351990de90ae27a89f0513b
SHA512

21aef52bb4b5ed66c632c0ca55e156b95dd5bf2715599880fb0b5ffea523fca0b82739cf2617095336c332664ab8dcdd64fa910d3bae64c9f384767709720ada
SSDEEP

12288:nanOzOlC9Am80quPgdBHh/FOPfe+VYRVORkG:lqltm80qigrHxFGVYbi

Score

10^/10

formbook c232 credential_access discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c232

Decoy

tangdourenfz.com

helpforkids.today

bioethanol-us.com

0351zc.com

3rdimultimedia.com

thecannibisconnection.net

mktoob.net

orchidinvestmentlimited.com

moccustoms.com

shopendora.com

rosariosandino.com

bien-vivre-tunisie.com

godofgreens.com

nhathuocphuongle.com

thefastsource.com

viagra2tadalafil.com

abarroteslacanasta.com

versabiosciences.com

nergiztarimhayvancilik.com

airpodsbayi.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/1872-27-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/1872-30-0x0000000000400000-0x000000000042E000-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	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\XBSDVVS0UNN = "C:\\Program Files (x86)\\Cdtotwtb\\2dg4_3fb.exe"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1096	rundll32.exe

Reads user/profile data of web browsers 2 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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 3476	1872	cmd.exe	56
PID 444 set thread context of 3476	444	rundll32.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Cdtotwtb\2dg4_3fb.exe	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	DHL PACKAGE - PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
1096	rundll32.exe
1872	cmd.exe
1872	cmd.exe
1872	cmd.exe
1872	cmd.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1096	rundll32.exe
1872	cmd.exe
1872	cmd.exe
1872	cmd.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe
444	rundll32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	cmd.exe
Token: SeDebugPrivilege	444	rundll32.exe
Token: SeShutdownPrivilege	3476	Explorer.EXE
Token: SeCreatePagefilePrivilege	3476	Explorer.EXE
Token: SeShutdownPrivilege	3476	Explorer.EXE
Token: SeCreatePagefilePrivilege	3476	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3476	Explorer.EXE

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 1096	1900	DHL PACKAGE - PDF.exe	83
PID 1900 wrote to memory of 1096	1900	DHL PACKAGE - PDF.exe	83
PID 1900 wrote to memory of 1096	1900	DHL PACKAGE - PDF.exe	83
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85
PID 1096 wrote to memory of 1872	1096	rundll32.exe	85

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	rundll32.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3476
- C:\Users\Admin\AppData\Local\Temp\DHL PACKAGE - PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL PACKAGE - PDF.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe SitulaCystocele,Hurley
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1096
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1872
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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
  - System policy modification
  PID:444
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\cmd.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3516
- - 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:4080
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1080

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 Information Discovery

T1082

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\Local\Temp\Prosody

Filesize
231KB

MD5
6847287ec5adf184583fac09b774e5dd

SHA1
52183c47dd439a5695eee05e2f22608e32179427

SHA256
27c010483a5665042dd6c20c69f9fdc4bbe9f7bf7fcc516f51cc8318a8c3b844

SHA512
1e7dbf36ac5949e120f804ebd986882e7d66ce1dc3bd8d0888073ea2f3f07fc13d8d11669372822d3630caf299a1675fd9cf62891203d67b8685520ff3d2775d

Download Submit
C:\Users\Admin\AppData\Local\Temp\SitulaCystocele.DLL

Filesize
50KB

MD5
de3f3ceccff80b3b0cc7e8cc58357b70

SHA1
701387d5e62903e114f4bdf59cd4f89cc6b2ad4e

SHA256
18e86106e60613594527c85fe6c97287fc8c3715181a62cb2b4d2258c210b6c8

SHA512
ad16ea6af2200f7f8a8c0fd0cc1fe5c935942a8789ce057818499b1a51865bb4a0b39a4091f84a2652d2c6ea7569e3829dd5b3043b2d44083a597f3954c2c6db

Download Submit
C:\Users\Admin\AppData\Roaming\74-76ATE\74-logim.jpeg

Filesize
79KB

MD5
7d647b36e3eb8b16f114aea4b6ca2200

SHA1
d3adeeb373192c76072b3a1f35cac97478833161

SHA256
a61726050387a949d67ddaba87666968401b6333e5fd141eeef29562946a1371

SHA512
55c70e20fc4b410f927a9d72fb76f10fae67fb60a0d48e21151d0226e6e968842cae81c54db910e0f8d278d6d25cae5324644bed91842f177d1abf3ccbb5581c

Download Submit
C:\Users\Admin\AppData\Roaming\74-76ATE\74-logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\74-76ATE\74-logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\74-76ATE\74-logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\74-76ATE\74-logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/444-29-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/444-31-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/1096-25-0x0000000074470000-0x0000000074538000-memory.dmp

Filesize
800KB

Download
memory/1096-23-0x0000000075C50000-0x0000000075CB3000-memory.dmp

Filesize
396KB

Download
memory/1096-22-0x0000000074470000-0x0000000074538000-memory.dmp

Filesize
800KB

Download
memory/1096-21-0x00000000022C0000-0x00000000022C2000-memory.dmp

Filesize
8KB

Download
memory/1872-30-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1872-27-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1872-24-0x0000000000FD0000-0x0000000000FD6000-memory.dmp

Filesize
24KB

Download
memory/3476-34-0x0000000008BB0000-0x0000000008D29000-memory.dmp

Filesize
1.5MB

Download