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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1536-67-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1536-68-0x000000000041F1E0-mapping.dmp	formbook
behavioral1/memory/1536-71-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1752-79-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1752-83-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

049 BL DRAFT.exeRegAsm.exeraserver.exe

description	pid	process	target process
PID 964 set thread context of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 1536 set thread context of 1384	1536	RegAsm.exe	Explorer.EXE
PID 1752 set thread context of 1384	1752	raserver.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 22 IoCs

Processes:

powershell.exe049 BL DRAFT.exeRegAsm.exeraserver.exe

pid	process
1088	powershell.exe
964	049 BL DRAFT.exe
1536	RegAsm.exe
1536	RegAsm.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe
1752	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegAsm.exeraserver.exe

pid process

1536 RegAsm.exe
1536 RegAsm.exe
1536 RegAsm.exe
1752 raserver.exe
1752 raserver.exe

pid	process
1536	RegAsm.exe
1536	RegAsm.exe
1536	RegAsm.exe
1752	raserver.exe
1752	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

049 BL DRAFT.exepowershell.exeRegAsm.exeraserver.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	964	049 BL DRAFT.exe
Token: SeDebugPrivilege	1088	powershell.exe
Token: SeDebugPrivilege	1536	RegAsm.exe
Token: SeDebugPrivilege	1752	raserver.exe
Token: SeShutdownPrivilege	1384	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

049 BL DRAFT.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 964 wrote to memory of 1088	964	049 BL DRAFT.exe	powershell.exe
PID 964 wrote to memory of 1088	964	049 BL DRAFT.exe	powershell.exe
PID 964 wrote to memory of 1088	964	049 BL DRAFT.exe	powershell.exe
PID 964 wrote to memory of 1088	964	049 BL DRAFT.exe	powershell.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 964 wrote to memory of 1536	964	049 BL DRAFT.exe	RegAsm.exe
PID 1384 wrote to memory of 1752	1384	Explorer.EXE	raserver.exe
PID 1384 wrote to memory of 1752	1384	Explorer.EXE	raserver.exe
PID 1384 wrote to memory of 1752	1384	Explorer.EXE	raserver.exe
PID 1384 wrote to memory of 1752	1384	Explorer.EXE	raserver.exe
PID 1752 wrote to memory of 932	1752	raserver.exe	cmd.exe
PID 1752 wrote to memory of 932	1752	raserver.exe	cmd.exe
PID 1752 wrote to memory of 932	1752	raserver.exe	cmd.exe
PID 1752 wrote to memory of 932	1752	raserver.exe	cmd.exe

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

C:\Users\Admin\AppData\Local\Temp\049 BL DRAFT.exe
"C:\Users\Admin\AppData\Local\Temp\049 BL DRAFT.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:964

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:1088

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:1536

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/932-77-0x0000000000000000-mapping.dmp

Download
memory/964-54-0x00000000003C0000-0x00000000003F0000-memory.dmp

Filesize
192KB

Download
memory/964-55-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/964-56-0x0000000005100000-0x000000000518A000-memory.dmp

Filesize
552KB

Download
memory/964-57-0x0000000004250000-0x000000000429E000-memory.dmp

Filesize
312KB

Download
memory/964-58-0x0000000005090000-0x00000000050DC000-memory.dmp

Filesize
304KB

Download
memory/1088-61-0x0000000070070000-0x000000007061B000-memory.dmp

Filesize
5.7MB

Download
memory/1088-62-0x0000000070070000-0x000000007061B000-memory.dmp

Filesize
5.7MB

Download
memory/1088-63-0x0000000070070000-0x000000007061B000-memory.dmp

Filesize
5.7MB

Download
memory/1088-59-0x0000000000000000-mapping.dmp

Download
memory/1384-84-0x00000000046D0000-0x00000000047BC000-memory.dmp

Filesize
944KB

Download
memory/1384-82-0x00000000046D0000-0x00000000047BC000-memory.dmp

Filesize
944KB

Download
memory/1384-74-0x0000000004C40000-0x0000000004DC9000-memory.dmp

Filesize
1.5MB

Download
memory/1536-73-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1536-72-0x0000000002350000-0x0000000002653000-memory.dmp

Filesize
3.0MB

Download
memory/1536-71-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1536-68-0x000000000041F1E0-mapping.dmp

Download
memory/1536-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1536-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1536-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1752-75-0x0000000000000000-mapping.dmp

Download
memory/1752-78-0x0000000000AA0000-0x0000000000ABC000-memory.dmp

Filesize
112KB

Download
memory/1752-79-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1752-80-0x0000000001EC0000-0x00000000021C3000-memory.dmp

Filesize
3.0MB

Download
memory/1752-81-0x00000000007E0000-0x0000000000874000-memory.dmp

Filesize
592KB

Download
memory/1752-83-0x0000000000080000-0x00000000000AF000-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