formbook | 64632950471c32a49589814ca9fba041394d1e3248781c84077a8806e8863584

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2024 08:26

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General

Target

TNT EXPRESS DELIVERY DOCUMENTS.exe
Size

368KB
MD5

561189349e7ef1918a4c27182a279ca6
SHA1

37165c0b5bd29f23664d55e0e4279f89ccde4275
SHA256

5d11d75dc9ecba71d33f246f0f277ffec929402f96c132d186a398e6942ffb7e
SHA512

96ec8f72b5b031b8724296f620ba3b2e64295da62ae4d56e2d00b84d01bbbe3f3488f51ecdf7ab297b347574783ca4fad1105a1ee5fb97136affa6358c746e55
SSDEEP

6144:dt39+IGUiggkeVXZtFz/icY6FBXmyskHrBggUBmefTm2+zNXsl37t:CgWVXZj/XBGyskdgpfT

Score

10^/10

formbook ch credential_access discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

Decoy

dfjz88.com

realtorscreek.com

pl8v5z.info

thicdienthoai.com

areauruguay.com

shimizu-yado.com

apples5.com

hothip.net

jm-legal.online

bkinfo28.online

edificiosakura.net

biodesixlungreflex.com

segurosblanco.com

atsintech.solutions

steuerberaterfinden.com

ojjul.com

udcomputer.com

grovescashflow.com

inglot-jlo.com

docteursnuisible.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/1984-11-0x0000000000400000-0x0000000000461000-memory.dmp	formbook
behavioral2/memory/1984-15-0x0000000000400000-0x0000000000461000-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	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\HDFTYN-XF = "C:\\Program Files (x86)\\Mux4lgt2\\chkdskuffp.exe"	cmmon32.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 1984 set thread context of 3436	1984	TNT EXPRESS DELIVERY DOCUMENTS.exe	56
PID 2120 set thread context of 3436	2120	cmmon32.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Mux4lgt2\chkdskuffp.exe	cmmon32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\win.ini	TNT EXPRESS DELIVERY DOCUMENTS.exe
File opened for modification	C:\Windows\win.ini	TNT EXPRESS DELIVERY DOCUMENTS.exe

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	TNT EXPRESS DELIVERY DOCUMENTS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TNT EXPRESS DELIVERY DOCUMENTS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe
2120	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
2120	cmmon32.exe
2120	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
Token: SeDebugPrivilege	2120	cmmon32.exe
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
368	TNT EXPRESS DELIVERY DOCUMENTS.exe
368	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
368	TNT EXPRESS DELIVERY DOCUMENTS.exe
368	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
368	TNT EXPRESS DELIVERY DOCUMENTS.exe
1984	TNT EXPRESS DELIVERY DOCUMENTS.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3436	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 368 wrote to memory of 1984	368	TNT EXPRESS DELIVERY DOCUMENTS.exe	83
PID 368 wrote to memory of 1984	368	TNT EXPRESS DELIVERY DOCUMENTS.exe	83
PID 368 wrote to memory of 1984	368	TNT EXPRESS DELIVERY DOCUMENTS.exe	83
PID 3436 wrote to memory of 2120	3436	Explorer.EXE	86
PID 3436 wrote to memory of 2120	3436	Explorer.EXE	86
PID 3436 wrote to memory of 2120	3436	Explorer.EXE	86
PID 2120 wrote to memory of 2980	2120	cmmon32.exe	91
PID 2120 wrote to memory of 2980	2120	cmmon32.exe	91
PID 2120 wrote to memory of 2980	2120	cmmon32.exe	91
PID 2120 wrote to memory of 4476	2120	cmmon32.exe	99
PID 2120 wrote to memory of 4476	2120	cmmon32.exe	99
PID 2120 wrote to memory of 4476	2120	cmmon32.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Users\Admin\AppData\Local\Temp\TNT EXPRESS DELIVERY DOCUMENTS.exe
  "C:\Users\Admin\AppData\Local\Temp\TNT EXPRESS DELIVERY DOCUMENTS.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:368
- - C:\Users\Admin\AppData\Local\Temp\TNT EXPRESS DELIVERY DOCUMENTS.exe
    "C:\Users\Admin\AppData\Local\Temp\TNT EXPRESS DELIVERY DOCUMENTS.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    PID:1984
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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
  PID:2120
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\TNT EXPRESS DELIVERY DOCUMENTS.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2980
- - 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:4476

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\L-0A962E\L-0logim.jpeg

Filesize
85KB

MD5
d983eadd2e13d324da79c689140cc37b

SHA1
701394b7c4949ea850c109947d50222bb12c467d

SHA256
06f1defede69c9ae5d92b4c0ef96bb0236f10386a74f5ca459fc0a85d295567a

SHA512
2a80f193af564fd5efe0ccb1ceaecab502cf1ce35f3f6daba4de2d86aae0b317baa982c5c56a0074f497228d8b5576024b66a10306f210c27f796ca9401e808a

Download Submit
C:\Users\Admin\AppData\Roaming\L-0A962E\L-0logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\L-0A962E\L-0logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\L-0A962E\L-0logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
C:\Windows\win.ini

Filesize
123B

MD5
6bf517432f65eb7f0d18d574bf14124c

SHA1
5b9f37c1dd1318ebbec3bd2f07c109eb9d22c727

SHA256
6e2b70dfccabf3cc651545676a3a566c9cfae03f15f772886646abce1da35b46

SHA512
7b0cb8c20034585ec8bf4b45eda5eda5993a56e24931a7426dc5a9f081ec1f82545f3e26a48a4df885c8691fc6e8026d0808aebe3cc3358ba85ddca08ac4cb06

Download Submit
memory/368-2-0x00000000024B0000-0x00000000024B8000-memory.dmp

Filesize
32KB

Download
memory/368-4-0x0000000077C91000-0x0000000077DB1000-memory.dmp

Filesize
1.1MB

Download
memory/368-10-0x00000000024B0000-0x00000000024B8000-memory.dmp

Filesize
32KB

Download
memory/1984-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1984-14-0x000000000041B000-0x000000000041C000-memory.dmp

Filesize
4KB

Download
memory/1984-13-0x0000000021600000-0x000000002194A000-memory.dmp

Filesize
3.3MB

Download
memory/1984-12-0x0000000000740000-0x0000000000748000-memory.dmp

Filesize
32KB

Download
memory/1984-11-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1984-9-0x0000000000740000-0x0000000000748000-memory.dmp

Filesize
32KB

Download
memory/2120-17-0x00000000000E0000-0x00000000000EC000-memory.dmp

Filesize
48KB

Download
memory/2120-18-0x00000000000E0000-0x00000000000EC000-memory.dmp

Filesize
48KB

Download
memory/3436-16-0x0000000008970000-0x0000000008ADE000-memory.dmp

Filesize
1.4MB

Download
memory/3436-27-0x0000000008F90000-0x00000000090F6000-memory.dmp

Filesize
1.4MB

Download
memory/3436-26-0x0000000008F90000-0x00000000090F6000-memory.dmp

Filesize
1.4MB

Download
memory/3436-24-0x0000000008F90000-0x00000000090F6000-memory.dmp

Filesize
1.4MB

Download
memory/3436-21-0x0000000008970000-0x0000000008ADE000-memory.dmp

Filesize
1.4MB

Download