formbook | f3b163231a156797f336842bd4e6fce358ce875b7a06430c92d777eb84186f46

General

Target

po456789__img.exe
Size

403KB
MD5

8205a489fc508497b86443d6253e294b
SHA1

45e9e0b6dc9fce4583753e3cded6552844de0695
SHA256

6f4b543bdd425e2cb35fcc06f79dfac486985ae0d84133c34e0fd01b3a2c22bb
SHA512

b5099a16e8ad338574e6b5f5b57c0b160ff12fa75efbafe8e06dfa3de23611c54edddd9ef9e2fe30a424df733a93eafee452bdf7f5b344bb9629dff15353cd08

Score

10^/10

formbook duj evasion persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

duj

Decoy

deapink.pink

tkmdz.com

nytzshicai.com

photos-identite-dijon.com

ekanun.net

xn--fiqy4bxl57l9sag6f6wb.ink

slivercat5.com

ai-ethics.net

510ns.com

inotherways.com

ridesharesettelment.com

zjxiangnong.com

aoraessentials.com

sheap-list.com

heshengqy.com

experts-comptables-paris-17.com

parissummerolympics2024.info

gtyx88.com

devopsonjob.com

vodacred.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/800-59-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/800-60-0x000000000041E2E0-mapping.dmp	formbook
behavioral1/memory/800-62-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2028-69-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\MPXXUFWHMR = "C:\\Program Files (x86)\\Muvzxkzix\\msmbitqj.exe"	netsh.exe

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

po456789__img.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	po456789__img.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	po456789__img.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

po456789__img.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	po456789__img.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	po456789__img.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

po456789__img.exeMSBuild.exenetsh.exe

description	pid	process	target process
PID 776 set thread context of 800	776	po456789__img.exe	MSBuild.exe
PID 800 set thread context of 1384	800	MSBuild.exe	Explorer.EXE
PID 2028 set thread context of 1384	2028	netsh.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

netsh.exe

description ioc process

File opened for modification C:\Program Files (x86)\Muvzxkzix\msmbitqj.exe netsh.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Muvzxkzix\msmbitqj.exe	netsh.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

MSBuild.exenetsh.exe

pid	process
800	MSBuild.exe
800	MSBuild.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe
2028	netsh.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MSBuild.exenetsh.exe

pid process

800 MSBuild.exe
800 MSBuild.exe
800 MSBuild.exe
2028 netsh.exe
2028 netsh.exe
2028 netsh.exe
2028 netsh.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

po456789__img.exeMSBuild.exenetsh.exe

description pid process

Token: SeDebugPrivilege 776 po456789__img.exe
Token: SeDebugPrivilege 800 MSBuild.exe
Token: SeDebugPrivilege 2028 netsh.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1384 Explorer.EXE
1384 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1384 Explorer.EXE
1384 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	776	po456789__img.exe
Token: SeDebugPrivilege	800	MSBuild.exe
Token: SeDebugPrivilege	2028	netsh.exe

pid	process
1384	Explorer.EXE
1384	Explorer.EXE

pid	process
1384	Explorer.EXE
1384	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

po456789__img.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 776 wrote to memory of 800	776	po456789__img.exe	MSBuild.exe
PID 1384 wrote to memory of 2028	1384	Explorer.EXE	netsh.exe
PID 1384 wrote to memory of 2028	1384	Explorer.EXE	netsh.exe
PID 1384 wrote to memory of 2028	1384	Explorer.EXE	netsh.exe
PID 1384 wrote to memory of 2028	1384	Explorer.EXE	netsh.exe
PID 2028 wrote to memory of 320	2028	netsh.exe	cmd.exe
PID 2028 wrote to memory of 320	2028	netsh.exe	cmd.exe
PID 2028 wrote to memory of 320	2028	netsh.exe	cmd.exe
PID 2028 wrote to memory of 320	2028	netsh.exe	cmd.exe
PID 2028 wrote to memory of 2020	2028	netsh.exe	Firefox.exe
PID 2028 wrote to memory of 2020	2028	netsh.exe	Firefox.exe
PID 2028 wrote to memory of 2020	2028	netsh.exe	Firefox.exe
PID 2028 wrote to memory of 2020	2028	netsh.exe	Firefox.exe
PID 2028 wrote to memory of 2020	2028	netsh.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1384

C:\Users\Admin\AppData\Local\Temp\po456789__img.exe
"C:\Users\Admin\AppData\Local\Temp\po456789__img.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:776

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:800

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
3⤵
PID:320

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logim.jpeg

Filesize
60KB

MD5
828b281dec20b73a32026010e2c0fcea

SHA1
c09baed7b91912355e3b51a27e38a7465f9177da

SHA256
47da73808920e76f3797a5a6cbdc7aa744ca321ae66d2e3ce0c95528aa2ac48c

SHA512
8f6887251fcfc4bd2a57275d7f1ceba5abc4ed891efa780c0dd54bad9611e7b3e8f4514cba96992eee1aeab28338ee1789211677d58da0eb643d6ef8b4ca1164

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/320-67-0x0000000000000000-mapping.dmp

Download
memory/776-54-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/776-55-0x0000000074460000-0x0000000074A0B000-memory.dmp

Filesize
5.7MB

Download
memory/800-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/800-64-0x0000000000310000-0x0000000000324000-memory.dmp

Filesize
80KB

Download
memory/800-63-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/800-62-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/800-60-0x000000000041E2E0-mapping.dmp

Download
memory/800-57-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/800-56-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1384-65-0x0000000004BD0000-0x0000000004D5F000-memory.dmp

Filesize
1.6MB

Download
memory/1384-72-0x0000000006A20000-0x0000000006B65000-memory.dmp

Filesize
1.3MB

Download
memory/2028-66-0x0000000000000000-mapping.dmp

Download
memory/2028-71-0x0000000001E70000-0x0000000001F03000-memory.dmp

Filesize
588KB

Download
memory/2028-70-0x0000000002140000-0x0000000002443000-memory.dmp

Filesize
3.0MB

Download
memory/2028-69-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/2028-68-0x0000000000A50000-0x0000000000A6B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads