formbook | f5e3f4ae71d7846b03325a53361ea4a31b12871a2e4808cae4afcd3dce35e2ea

General

Target

049 BL DRAFT.exe
Size

167KB
MD5

dd9252c3656c0f6cb68a35f59c047758
SHA1

c9ccd18031e4f99cef7fed58a93ed5c7c616274c
SHA256

f5e3f4ae71d7846b03325a53361ea4a31b12871a2e4808cae4afcd3dce35e2ea
SHA512

a9e564512a2fa28fafcd4ac8838b80948e95146e03fc3e26358f1a117eb309e7456bb5f7eb00193a585b156db86d843c85b4afc1db46676f819733b639fea260

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/1512-141-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1512-147-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/720-150-0x0000000000330000-0x000000000035F000-memory.dmp	formbook
behavioral2/memory/720-154-0x0000000000330000-0x000000000035F000-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:

049 BL DRAFT.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	049 BL DRAFT.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

049 BL DRAFT.exeRegAsm.exewlanext.exe

description	pid	process	target process
PID 4684 set thread context of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 1512 set thread context of 3032	1512	RegAsm.exe	Explorer.EXE
PID 720 set thread context of 3032	720	wlanext.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

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

powershell.exe049 BL DRAFT.exeRegAsm.exewlanext.exe

pid	process
1296	powershell.exe
1296	powershell.exe
4684	049 BL DRAFT.exe
4684	049 BL DRAFT.exe
1512	RegAsm.exe
1512	RegAsm.exe
1512	RegAsm.exe
1512	RegAsm.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe
720	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3032 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegAsm.exewlanext.exe

pid process

1512 RegAsm.exe
1512 RegAsm.exe
1512 RegAsm.exe
720 wlanext.exe
720 wlanext.exe

pid	process
3032	Explorer.EXE

pid	process
1512	RegAsm.exe
1512	RegAsm.exe
1512	RegAsm.exe
720	wlanext.exe
720	wlanext.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

049 BL DRAFT.exepowershell.exeRegAsm.exewlanext.exe

description	pid	process
Token: SeDebugPrivilege	4684	049 BL DRAFT.exe
Token: SeDebugPrivilege	1296	powershell.exe
Token: SeDebugPrivilege	1512	RegAsm.exe
Token: SeDebugPrivilege	720	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

049 BL DRAFT.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 4684 wrote to memory of 1296	4684	049 BL DRAFT.exe	powershell.exe
PID 4684 wrote to memory of 1296	4684	049 BL DRAFT.exe	powershell.exe
PID 4684 wrote to memory of 1296	4684	049 BL DRAFT.exe	powershell.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 4684 wrote to memory of 1512	4684	049 BL DRAFT.exe	RegAsm.exe
PID 3032 wrote to memory of 720	3032	Explorer.EXE	wlanext.exe
PID 3032 wrote to memory of 720	3032	Explorer.EXE	wlanext.exe
PID 3032 wrote to memory of 720	3032	Explorer.EXE	wlanext.exe
PID 720 wrote to memory of 4628	720	wlanext.exe	cmd.exe
PID 720 wrote to memory of 4628	720	wlanext.exe	cmd.exe
PID 720 wrote to memory of 4628	720	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3032

C:\Users\Admin\AppData\Local\Temp\049 BL DRAFT.exe
"C:\Users\Admin\AppData\Local\Temp\049 BL DRAFT.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4684

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:1296

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:1512

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:720

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:4628

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/720-146-0x0000000000000000-mapping.dmp

Download
memory/720-154-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/720-152-0x0000000000AC0000-0x0000000000B54000-memory.dmp

Filesize
592KB

Download
memory/720-150-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/720-149-0x0000000000F10000-0x000000000125A000-memory.dmp

Filesize
3.3MB

Download
memory/720-148-0x0000000000650000-0x0000000000667000-memory.dmp

Filesize
92KB

Download
memory/1296-136-0x0000000005450000-0x00000000054B6000-memory.dmp

Filesize
408KB

Download
memory/1296-135-0x0000000004D00000-0x0000000004D66000-memory.dmp

Filesize
408KB

Download
memory/1296-138-0x0000000007310000-0x000000000798A000-memory.dmp

Filesize
6.5MB

Download
memory/1296-139-0x0000000006120000-0x000000000613A000-memory.dmp

Filesize
104KB

Download
memory/1296-131-0x0000000000000000-mapping.dmp

Download
memory/1296-137-0x0000000005C00000-0x0000000005C1E000-memory.dmp

Filesize
120KB

Download
memory/1296-132-0x0000000004680000-0x00000000046B6000-memory.dmp

Filesize
216KB

Download
memory/1296-133-0x0000000004DB0000-0x00000000053D8000-memory.dmp

Filesize
6.2MB

Download
memory/1296-134-0x0000000004B60000-0x0000000004B82000-memory.dmp

Filesize
136KB

Download
memory/1512-141-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1512-147-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1512-144-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/1512-142-0x0000000002CC0000-0x000000000300A000-memory.dmp

Filesize
3.3MB

Download
memory/1512-140-0x0000000000000000-mapping.dmp

Download
memory/3032-145-0x0000000007C60000-0x0000000007D95000-memory.dmp

Filesize
1.2MB

Download
memory/3032-153-0x0000000007DA0000-0x0000000007EF8000-memory.dmp

Filesize
1.3MB

Download
memory/3032-155-0x0000000007DA0000-0x0000000007EF8000-memory.dmp

Filesize
1.3MB

Download
memory/4628-151-0x0000000000000000-mapping.dmp

Download
memory/4684-130-0x0000000000F60000-0x0000000000F90000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads