formbook | a3aa28d96664fc95cf9b74941b6c0015e5c3d18dd5efcee33e1dd1773aa3316d

General

Target

H2pjyhEAKkZfHdt.exe
Size

389KB
MD5

89d09a60f52f57c3ce453088e2e55929
SHA1

d44fce4891c9cbf331c2fe6d9d579f23b10f4089
SHA256

64379371f079edd1bb0d1a26a98e0a487c4e89a468f60674d803f929d24d3ecb
SHA512

f9c7e1ddc911d147146e9604dca1130f92e94589d4f9a415d7aa082910add68a7c7496ad633b6bea6abb9db5dcf1c8eb1b94a1dabe73f9e7ed067bc2cdd3ccdc

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/524-61-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/524-62-0x000000000041E2E0-mapping.dmp	formbook
behavioral1/memory/1056-70-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
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:

H2pjyhEAKkZfHdt.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	H2pjyhEAKkZfHdt.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	H2pjyhEAKkZfHdt.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	help.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\IZ7DANEXF0 = "C:\\Program Files (x86)\\Vk4j8prnp\\usertb_t_ru0.exe"	help.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:

H2pjyhEAKkZfHdt.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	H2pjyhEAKkZfHdt.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	H2pjyhEAKkZfHdt.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

H2pjyhEAKkZfHdt.exeMSBuild.exehelp.exe

description	pid	process	target process
PID 960 set thread context of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 524 set thread context of 1368	524	MSBuild.exe	Explorer.EXE
PID 1056 set thread context of 1368	1056	help.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

help.exe

description ioc process

File opened for modification C:\Program Files (x86)\Vk4j8prnp\usertb_t_ru0.exe help.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1764 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Vk4j8prnp\usertb_t_ru0.exe	help.exe

pid	process
1764	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

H2pjyhEAKkZfHdt.exeMSBuild.exehelp.exe

pid	process
960	H2pjyhEAKkZfHdt.exe
960	H2pjyhEAKkZfHdt.exe
960	H2pjyhEAKkZfHdt.exe
524	MSBuild.exe
524	MSBuild.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MSBuild.exehelp.exe

pid process

524 MSBuild.exe
524 MSBuild.exe
524 MSBuild.exe
1056 help.exe
1056 help.exe
1056 help.exe
1056 help.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

H2pjyhEAKkZfHdt.exeMSBuild.exehelp.exe

description pid process

Token: SeDebugPrivilege 960 H2pjyhEAKkZfHdt.exe
Token: SeDebugPrivilege 524 MSBuild.exe
Token: SeDebugPrivilege 1056 help.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1368 Explorer.EXE
1368 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1368 Explorer.EXE
1368 Explorer.EXE

pid	process
524	MSBuild.exe
524	MSBuild.exe
524	MSBuild.exe
1056	help.exe
1056	help.exe
1056	help.exe
1056	help.exe

description	pid	process
Token: SeDebugPrivilege	960	H2pjyhEAKkZfHdt.exe
Token: SeDebugPrivilege	524	MSBuild.exe
Token: SeDebugPrivilege	1056	help.exe

pid	process
1368	Explorer.EXE
1368	Explorer.EXE

pid	process
1368	Explorer.EXE
1368	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

H2pjyhEAKkZfHdt.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 960 wrote to memory of 1764	960	H2pjyhEAKkZfHdt.exe	schtasks.exe
PID 960 wrote to memory of 1764	960	H2pjyhEAKkZfHdt.exe	schtasks.exe
PID 960 wrote to memory of 1764	960	H2pjyhEAKkZfHdt.exe	schtasks.exe
PID 960 wrote to memory of 1764	960	H2pjyhEAKkZfHdt.exe	schtasks.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 960 wrote to memory of 524	960	H2pjyhEAKkZfHdt.exe	MSBuild.exe
PID 1368 wrote to memory of 1056	1368	Explorer.EXE	help.exe
PID 1368 wrote to memory of 1056	1368	Explorer.EXE	help.exe
PID 1368 wrote to memory of 1056	1368	Explorer.EXE	help.exe
PID 1368 wrote to memory of 1056	1368	Explorer.EXE	help.exe
PID 1056 wrote to memory of 1468	1056	help.exe	cmd.exe
PID 1056 wrote to memory of 1468	1056	help.exe	cmd.exe
PID 1056 wrote to memory of 1468	1056	help.exe	cmd.exe
PID 1056 wrote to memory of 1468	1056	help.exe	cmd.exe
PID 1056 wrote to memory of 1760	1056	help.exe	Firefox.exe
PID 1056 wrote to memory of 1760	1056	help.exe	Firefox.exe
PID 1056 wrote to memory of 1760	1056	help.exe	Firefox.exe
PID 1056 wrote to memory of 1760	1056	help.exe	Firefox.exe
PID 1056 wrote to memory of 1760	1056	help.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:1368

C:\Users\Admin\AppData\Local\Temp\H2pjyhEAKkZfHdt.exe
"C:\Users\Admin\AppData\Local\Temp\H2pjyhEAKkZfHdt.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IsxovY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5468.tmp"
3⤵
- Creates scheduled task(s)
PID:1764

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:524

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Adds 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:1056

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
3⤵
PID:1468

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1760

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5468.tmp
Filesize
1KB

MD5
4316b1abb75469a1b64f93f2ca47bc89

SHA1
3cff85565520c2913516ae51f5d864f802950af3

SHA256
09a1fa135e85abca876e30c31cfc3d316dab8f38e44c1246eb457de3529576ad

SHA512
78c828a9a36a7ba0bfbda27793f7e1b62874aa7d989eb46ff386e0915b21eabfce41abb70cd66f4437fdf0dd34d1e49393234138af9e48c991dc66f88aae41ea

Download Submit
memory/524-64-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download
memory/524-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/524-65-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/524-58-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/524-62-0x000000000041E2E0-mapping.dmp

Download
memory/524-61-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/960-55-0x0000000074940000-0x0000000074EEB000-memory.dmp

Filesize
5.7MB

Download
memory/960-54-0x0000000076571000-0x0000000076573000-memory.dmp

Filesize
8KB

Download
memory/1056-67-0x0000000000000000-mapping.dmp

Download
memory/1056-69-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1056-70-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1056-71-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Filesize
3.0MB

Download
memory/1056-72-0x0000000000670000-0x0000000000703000-memory.dmp

Filesize
588KB

Download
memory/1368-66-0x0000000006A60000-0x0000000006BED000-memory.dmp

Filesize
1.6MB

Download
memory/1368-73-0x0000000007040000-0x000000000711D000-memory.dmp

Filesize
884KB

Download
memory/1468-68-0x0000000000000000-mapping.dmp

Download
memory/1764-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads