formbook | e23ac135f38743c3b47deed6e514d29fe5f52bd6070754b125d62ad7db246703

General

Target

BOOKING DETAILS 235201252305.exe
Size

170KB
MD5

570614c38bcedd9090cba96e6a61ce8e
SHA1

d4c2a51512d314e50d650e37e1ec7fe6af7aace9
SHA256

e23ac135f38743c3b47deed6e514d29fe5f52bd6070754b125d62ad7db246703
SHA512

4cc4bc2e2cde9b066704f3f8d2e86fabbe6a95bbee8cb0182a7669c1bbad62c0e48e29b8297b5546756117180643423b84df82fbe87a5ed81674fe1abd75287e

Score

10^/10

formbook ba17 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ba17

Decoy

bearwant.com

sdsguanfang.com

steamcommunityvia.top

sugarplumtreasures.com

koronislakefishing.com

jmae.xyz

xhxnqemkiqe.xyz

playzcrew.com

zatwsbq.com

lankofix.com

sh-zhepeng.com

mibodamisxv.online

butterflyjewelry.store

finestrecitalto-spottoday.info

globomateria.com

royalmdarts.com

d4af10836709.com

shepwill.com

67aldrich.info

trustedmakers.club

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
behavioral2/memory/364-144-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/364-150-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4852-154-0x0000000000FD0000-0x0000000000FFF000-memory.dmp	formbook
behavioral2/memory/4852-157-0x0000000000FD0000-0x0000000000FFF000-memory.dmp	formbook

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

Processes:

BOOKING DETAILS 235201252305.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	BOOKING DETAILS 235201252305.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

BOOKING DETAILS 235201252305.exeRegAsm.exerundll32.exe

description	pid	process	target process
PID 1604 set thread context of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 364 set thread context of 3136	364	RegAsm.exe	Explorer.EXE
PID 4852 set thread context of 3136	4852	rundll32.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 3 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 54 IoCs

Processes:

powershell.exeBOOKING DETAILS 235201252305.exeRegAsm.exerundll32.exe

pid	process
2040	powershell.exe
2040	powershell.exe
1604	BOOKING DETAILS 235201252305.exe
1604	BOOKING DETAILS 235201252305.exe
364	RegAsm.exe
364	RegAsm.exe
364	RegAsm.exe
364	RegAsm.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe
4852	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3136 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegAsm.exerundll32.exe

pid process

364 RegAsm.exe
364 RegAsm.exe
364 RegAsm.exe
4852 rundll32.exe
4852 rundll32.exe

pid	process
3136	Explorer.EXE

pid	process
364	RegAsm.exe
364	RegAsm.exe
364	RegAsm.exe
4852	rundll32.exe
4852	rundll32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

BOOKING DETAILS 235201252305.exepowershell.exeRegAsm.exerundll32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1604	BOOKING DETAILS 235201252305.exe
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	364	RegAsm.exe
Token: SeDebugPrivilege	4852	rundll32.exe
Token: SeShutdownPrivilege	3136	Explorer.EXE
Token: SeCreatePagefilePrivilege	3136	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

3136 Explorer.EXE
3136 Explorer.EXE

pid	process
3136	Explorer.EXE
3136	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

BOOKING DETAILS 235201252305.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1604 wrote to memory of 2040	1604	BOOKING DETAILS 235201252305.exe	powershell.exe
PID 1604 wrote to memory of 2040	1604	BOOKING DETAILS 235201252305.exe	powershell.exe
PID 1604 wrote to memory of 2040	1604	BOOKING DETAILS 235201252305.exe	powershell.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 1604 wrote to memory of 364	1604	BOOKING DETAILS 235201252305.exe	RegAsm.exe
PID 3136 wrote to memory of 4852	3136	Explorer.EXE	rundll32.exe
PID 3136 wrote to memory of 4852	3136	Explorer.EXE	rundll32.exe
PID 3136 wrote to memory of 4852	3136	Explorer.EXE	rundll32.exe
PID 4852 wrote to memory of 1112	4852	rundll32.exe	cmd.exe
PID 4852 wrote to memory of 1112	4852	rundll32.exe	cmd.exe
PID 4852 wrote to memory of 1112	4852	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3136

C:\Users\Admin\AppData\Local\Temp\BOOKING DETAILS 235201252305.exe
"C:\Users\Admin\AppData\Local\Temp\BOOKING DETAILS 235201252305.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2040

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:364

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4852

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:1112

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/364-143-0x0000000000000000-mapping.dmp

Download
memory/364-150-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/364-147-0x0000000001040000-0x0000000001055000-memory.dmp

Filesize
84KB

Download
memory/364-146-0x0000000002DA0000-0x00000000030EA000-memory.dmp

Filesize
3.3MB

Download
memory/364-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1112-151-0x0000000000000000-mapping.dmp

Download
memory/1604-131-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/1604-132-0x0000000004F00000-0x0000000004F92000-memory.dmp

Filesize
584KB

Download
memory/1604-133-0x0000000004FF0000-0x0000000004FFA000-memory.dmp

Filesize
40KB

Download
memory/1604-130-0x0000000000490000-0x00000000004C0000-memory.dmp

Filesize
192KB

Download
memory/2040-137-0x0000000005120000-0x0000000005142000-memory.dmp

Filesize
136KB

Download
memory/2040-135-0x0000000002AF0000-0x0000000002B26000-memory.dmp

Filesize
216KB

Download
memory/2040-142-0x00000000065C0000-0x00000000065DA000-memory.dmp

Filesize
104KB

Download
memory/2040-140-0x00000000060C0000-0x00000000060DE000-memory.dmp

Filesize
120KB

Download
memory/2040-139-0x0000000005330000-0x0000000005396000-memory.dmp

Filesize
408KB

Download
memory/2040-138-0x00000000052C0000-0x0000000005326000-memory.dmp

Filesize
408KB

Download
memory/2040-136-0x00000000053F0000-0x0000000005A18000-memory.dmp

Filesize
6.2MB

Download
memory/2040-134-0x0000000000000000-mapping.dmp

Download
memory/2040-141-0x0000000007910000-0x0000000007F8A000-memory.dmp

Filesize
6.5MB

Download
memory/3136-148-0x0000000008660000-0x00000000087DB000-memory.dmp

Filesize
1.5MB

Download
memory/3136-156-0x00000000031C0000-0x0000000003283000-memory.dmp

Filesize
780KB

Download
memory/3136-158-0x00000000031C0000-0x0000000003283000-memory.dmp

Filesize
780KB

Download
memory/4852-149-0x0000000000000000-mapping.dmp

Download
memory/4852-153-0x00000000030B0000-0x00000000033FA000-memory.dmp

Filesize
3.3MB

Download
memory/4852-152-0x0000000000B50000-0x0000000000B64000-memory.dmp

Filesize
80KB

Download
memory/4852-154-0x0000000000FD0000-0x0000000000FFF000-memory.dmp

Filesize
188KB

Download
memory/4852-155-0x0000000002F10000-0x0000000002FA4000-memory.dmp

Filesize
592KB

Download
memory/4852-157-0x0000000000FD0000-0x0000000000FFF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads