formbook | 8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de

Analysis

max time kernel
147s
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
30-08-2024 05:25

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General

Target

101 2043 5770 pdf.exe
Size

2.0MB
MD5

5e8e7dd95b3e592a44a3c61b7f8d91f8
SHA1

d829b9e1e99087d94f527f359184f65b608190c5
SHA256

8d278608d1d1c4c5b6c048020c23351e75203066af1ae1e63c5c5ac0170cd3de
SHA512

a9846b798e89596da64cfeb844a5dcb3eefa983972cc4433cb6861464a386900a9035428187e5ae4e8b666a70df7c147f48884c512ee5823bcd1275072fc8d60
SSDEEP

49152:tl2eQMj254Xra+qk6okjyjxKtyEAqVG13lwUWQdHt:76euw

Score

10^/10

formbook kmge credential_access discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kmge

Decoy

jia0752d.com

cq0jt.sbs

whimsicalweddingrentals.com

meetsex-here.life

hhe-crv220.com

bedbillionaire.com

soycmo.com

mrawkward.xyz

11ramshornroad.com

motoyonaturals.com

thischicloves.com

gacorbet.pro

ihsanid.com

pancaketurner.com

santanarstore.com

cr3dtv.com

negotools.com

landfillequip.com

sejasuapropriachefe.com

diamant-verkopen.store

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 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4712-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4712-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2336-26-0x0000000001240000-0x000000000126F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1336	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	101 2043 5770 pdf.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\101 2043 5770 pdf = "C:\\Users\\Admin\\101 2043 5770 pdf.exe"	101 2043 5770 pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4540 set thread context of 4712	4540	101 2043 5770 pdf.exe	87
PID 4712 set thread context of 3404	4712	ngen.exe	55
PID 2336 set thread context of 3404	2336	wlanext.exe	55

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 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	wlanext.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
1336	powershell.exe
1336	powershell.exe
4712	ngen.exe
4712	ngen.exe
4712	ngen.exe
4712	ngen.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4712	ngen.exe
4712	ngen.exe
4712	ngen.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe
2336	wlanext.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeDebugPrivilege	4540	101 2043 5770 pdf.exe
Token: SeDebugPrivilege	1336	powershell.exe
Token: SeDebugPrivilege	4712	ngen.exe
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeDebugPrivilege	2336	wlanext.exe
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE
Token: SeShutdownPrivilege	3404	Explorer.EXE
Token: SeCreatePagefilePrivilege	3404	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3404	Explorer.EXE
3404	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3404	Explorer.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 1336	4540	101 2043 5770 pdf.exe	85
PID 4540 wrote to memory of 1336	4540	101 2043 5770 pdf.exe	85
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 4540 wrote to memory of 4712	4540	101 2043 5770 pdf.exe	87
PID 3404 wrote to memory of 2336	3404	Explorer.EXE	88
PID 3404 wrote to memory of 2336	3404	Explorer.EXE	88
PID 3404 wrote to memory of 2336	3404	Explorer.EXE	88
PID 2336 wrote to memory of 676	2336	wlanext.exe	97
PID 2336 wrote to memory of 676	2336	wlanext.exe	97
PID 2336 wrote to memory of 676	2336	wlanext.exe	97
PID 2336 wrote to memory of 3452	2336	wlanext.exe	102
PID 2336 wrote to memory of 3452	2336	wlanext.exe	102
PID 2336 wrote to memory of 3452	2336	wlanext.exe	102

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Users\Admin\AppData\Local\Temp\101 2043 5770 pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\101 2043 5770 pdf.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4540
- - C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath $env:UserProfile
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1336
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4712
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - 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:2336
- - 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:676
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:3452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Query Registry

T1012

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\__PSScriptPolicyTest_zewd3kan.4st.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\LK3BNUQ2\LK3logim.jpeg

Filesize
82KB

MD5
01f3021de5fd2730b8229631fd916739

SHA1
af420c603c5fbe28b3a8a165229a34fa1fe32cb9

SHA256
cda8e9acd971261d9b7969e29b374627c075013265f790d86c503818f6c623b7

SHA512
d8abb7cfa1a954dc36c70e458a8b15b86b258b9cc09eed333182bc5643ab7359a65001b698ddad45e2bd477fd91c26e5f6fdf267e830854eb54aba87a4c65569

Download Submit
C:\Users\Admin\AppData\Roaming\LK3BNUQ2\LK3logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\LK3BNUQ2\LK3logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\LK3BNUQ2\LK3logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\LK3BNUQ2\LK3logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1336-1-0x00000258E7840000-0x00000258E7862000-memory.dmp

Filesize
136KB

Download
memory/1336-11-0x00007FFCB1360000-0x00007FFCB1E21000-memory.dmp

Filesize
10.8MB

Download
memory/1336-12-0x00007FFCB1360000-0x00007FFCB1E21000-memory.dmp

Filesize
10.8MB

Download
memory/1336-0-0x00007FFCB1363000-0x00007FFCB1365000-memory.dmp

Filesize
8KB

Download
memory/1336-18-0x00007FFCB1360000-0x00007FFCB1E21000-memory.dmp

Filesize
10.8MB

Download
memory/2336-23-0x0000000000060000-0x0000000000077000-memory.dmp

Filesize
92KB

Download
memory/2336-26-0x0000000001240000-0x000000000126F000-memory.dmp

Filesize
188KB

Download
memory/2336-25-0x0000000000060000-0x0000000000077000-memory.dmp

Filesize
92KB

Download
memory/3404-41-0x0000000008DA0000-0x0000000008F19000-memory.dmp

Filesize
1.5MB

Download
memory/3404-46-0x000000000AF40000-0x000000000B05C000-memory.dmp

Filesize
1.1MB

Download
memory/3404-22-0x0000000008DA0000-0x0000000008F19000-memory.dmp

Filesize
1.5MB

Download
memory/4712-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4712-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4712-21-0x0000000001050000-0x0000000001064000-memory.dmp

Filesize
80KB

Download
memory/4712-15-0x0000000001360000-0x00000000016AA000-memory.dmp

Filesize
3.3MB

Download