formbook | 4e25735dc713c78458f181caa0f09a6ea2ca79a708a3b22f52d1c936806de251

General

Target

e87b10b098df8ff5906cb1154c78e83d.exe
Size

596KB
MD5

e87b10b098df8ff5906cb1154c78e83d
SHA1

26417afefaabd707dae65d9fdd84178f4fb5e112
SHA256

4e25735dc713c78458f181caa0f09a6ea2ca79a708a3b22f52d1c936806de251
SHA512

87a959392f490e84346daffbbb3807a168b9c1ff4a4bdbf4b7e2e9db813377e1c9eb1a4be3b4cb7bd8eb011553d3367e818068d8af18c2e219543af7ca489e88

Score

10^/10

formbook hs3h evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hs3h

C2

http://www.alefisrael.com/hs3h/

Decoy

slairt.com

teresasellsflorida.com

resouthcarolina.com

npccfbf.com

hutshed.com

westatesmarking.com

rustmonkeys.com

kagawa-rentacar.com

easyvoip-system.com

admorinsulation.com

ericaleighjensen.com

zhonghaojiaju.net

apple-iphone.xyz

b0t.info

torgetmc.xyz

lawrencemargarse.com

6123655.com

macdonalds-delivery.com

cvpfl.com

ayudaparaturent.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1948-67-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1948-68-0x000000000041F1A0-mapping.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:

e87b10b098df8ff5906cb1154c78e83d.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e87b10b098df8ff5906cb1154c78e83d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	e87b10b098df8ff5906cb1154c78e83d.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:

e87b10b098df8ff5906cb1154c78e83d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	e87b10b098df8ff5906cb1154c78e83d.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	e87b10b098df8ff5906cb1154c78e83d.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

e87b10b098df8ff5906cb1154c78e83d.exe

description pid process target process

PID 1932 set thread context of 1948 1932 e87b10b098df8ff5906cb1154c78e83d.exe e87b10b098df8ff5906cb1154c78e83d.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

432 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

e87b10b098df8ff5906cb1154c78e83d.exee87b10b098df8ff5906cb1154c78e83d.exe

pid process

1932 e87b10b098df8ff5906cb1154c78e83d.exe
1948 e87b10b098df8ff5906cb1154c78e83d.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

e87b10b098df8ff5906cb1154c78e83d.exe

description pid process

Token: SeDebugPrivilege 1932 e87b10b098df8ff5906cb1154c78e83d.exe

description	pid	process	target process
PID 1932 set thread context of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe

pid	process
432	schtasks.exe

pid	process
1932	e87b10b098df8ff5906cb1154c78e83d.exe
1948	e87b10b098df8ff5906cb1154c78e83d.exe

description	pid	process
Token: SeDebugPrivilege	1932	e87b10b098df8ff5906cb1154c78e83d.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

e87b10b098df8ff5906cb1154c78e83d.exe

description	pid	process	target process
PID 1932 wrote to memory of 432	1932	e87b10b098df8ff5906cb1154c78e83d.exe	schtasks.exe
PID 1932 wrote to memory of 432	1932	e87b10b098df8ff5906cb1154c78e83d.exe	schtasks.exe
PID 1932 wrote to memory of 432	1932	e87b10b098df8ff5906cb1154c78e83d.exe	schtasks.exe
PID 1932 wrote to memory of 432	1932	e87b10b098df8ff5906cb1154c78e83d.exe	schtasks.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe
PID 1932 wrote to memory of 1948	1932	e87b10b098df8ff5906cb1154c78e83d.exe	e87b10b098df8ff5906cb1154c78e83d.exe

C:\Users\Admin\AppData\Local\Temp\e87b10b098df8ff5906cb1154c78e83d.exe
"C:\Users\Admin\AppData\Local\Temp\e87b10b098df8ff5906cb1154c78e83d.exe"
1⤵
- 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:1932

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DDGuFdDkUBuPOY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8AF1.tmp"
2⤵
- Creates scheduled task(s)
PID:432

C:\Users\Admin\AppData\Local\Temp\e87b10b098df8ff5906cb1154c78e83d.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1948

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

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\tmp8AF1.tmp
MD5
ddba4099615a9c94e52e103543866eca

SHA1
86e030d23417380ef4dc5b089b3edfd8b80b3bf6

SHA256
fe5e7e85b8f3f417f29b699acdacb898dbbf6d36044085e889be68a5f86233a5

SHA512
5874eb99d1de2896ee87517a3ef139f8ebb8dd617b6646cf14a36bf79713328c5914e09b814eca069d86efb0071d7709d0e524bb71074b0312df8c69fcc98b46

Download Submit
memory/432-63-0x0000000000000000-mapping.dmp

Download
memory/1932-62-0x0000000005E00000-0x0000000005E31000-memory.dmp

Filesize
196KB

Download
memory/1932-59-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1932-60-0x0000000001F40000-0x0000000001F4E000-memory.dmp

Filesize
56KB

Download
memory/1932-61-0x0000000007D20000-0x0000000007DA2000-memory.dmp

Filesize
520KB

Download
memory/1932-55-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/1932-58-0x0000000004E70000-0x0000000004E71000-memory.dmp

Filesize
4KB

Download
memory/1932-57-0x0000000075901000-0x0000000075903000-memory.dmp

Filesize
8KB

Download
memory/1948-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-68-0x000000000041F1A0-mapping.dmp

Download
memory/1948-69-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads