formbook | 4c3ef62fadfcb2add42105636653251735afa0c6de4ab4fd61287e35580d97e7

General

Target

MY0025007022.exe
Size

67KB
MD5

09d635e7fac13ca49037a27ffa10cdbf
SHA1

b12b7a877682838b5b1673ee4783bbf44eba4863
SHA256

b12c23f3cf0937291c634f1505ca5123dc08363dcc0f766ac029b1238cade11d
SHA512

f50052ccd601ef2830e0c1a5df7e4414249e55acc8aeef3a0eb1ca16f8d92da372ae25a94fc6a9deda85a812e01104f9000b429dc70cbcab0bc6fb46aaf12f85

Score

10^/10

formbook fs44 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fs44

Decoy

whneat.com

jljcw.net

pocodelivery.com

outofplacezine.com

yavuzcansigorta.com

xinhewood-cn.com

cartogogh.com

5avis.com

joyceyong.art

digitalsurf.community

blackcreekbarns.com

magazinedistribuidor.com

sportsgross.com

drevom.online

mayibeofservice.com

gareloi-digit.com

permitha.net

renaissanceestetica.com

facts-r-friends.com

dach-loc.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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1892-67-0x000000000041F110-mapping.dmp	formbook
behavioral1/memory/1892-66-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1892-69-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1472-76-0x00000000001C0000-0x00000000001EF000-memory.dmp	formbook
behavioral1/memory/1472-80-0x00000000001C0000-0x00000000001EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

MY0025007022.exeMSBuild.execmd.exe

description	pid	process	target process
PID 1304 set thread context of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1892 set thread context of 1396	1892	MSBuild.exe	Explorer.EXE
PID 1472 set thread context of 1396	1472	cmd.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 21 IoCs

Processes:

powershell.exeMY0025007022.exeMSBuild.execmd.exe

pid	process
1524	powershell.exe
1304	MY0025007022.exe
1892	MSBuild.exe
1892	MSBuild.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe
1472	cmd.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.execmd.exe

pid process

1892 MSBuild.exe
1892 MSBuild.exe
1892 MSBuild.exe
1472 cmd.exe
1472 cmd.exe

pid	process
1892	MSBuild.exe
1892	MSBuild.exe
1892	MSBuild.exe
1472	cmd.exe
1472	cmd.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

MY0025007022.exepowershell.exeMSBuild.execmd.exe

description	pid	process
Token: SeDebugPrivilege	1304	MY0025007022.exe
Token: SeDebugPrivilege	1524	powershell.exe
Token: SeDebugPrivilege	1892	MSBuild.exe
Token: SeDebugPrivilege	1472	cmd.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

MY0025007022.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 1304 wrote to memory of 1524	1304	MY0025007022.exe	powershell.exe
PID 1304 wrote to memory of 1524	1304	MY0025007022.exe	powershell.exe
PID 1304 wrote to memory of 1524	1304	MY0025007022.exe	powershell.exe
PID 1304 wrote to memory of 1524	1304	MY0025007022.exe	powershell.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1304 wrote to memory of 1892	1304	MY0025007022.exe	MSBuild.exe
PID 1396 wrote to memory of 1472	1396	Explorer.EXE	cmd.exe
PID 1396 wrote to memory of 1472	1396	Explorer.EXE	cmd.exe
PID 1396 wrote to memory of 1472	1396	Explorer.EXE	cmd.exe
PID 1396 wrote to memory of 1472	1396	Explorer.EXE	cmd.exe
PID 1472 wrote to memory of 1632	1472	cmd.exe	cmd.exe
PID 1472 wrote to memory of 1632	1472	cmd.exe	cmd.exe
PID 1472 wrote to memory of 1632	1472	cmd.exe	cmd.exe
PID 1472 wrote to memory of 1632	1472	cmd.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1396

C:\Users\Admin\AppData\Local\Temp\MY0025007022.exe
"C:\Users\Admin\AppData\Local\Temp\MY0025007022.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1524

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe purecrypter
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1892

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1632

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

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Downloads

memory/1304-54-0x0000000000F20000-0x0000000000F36000-memory.dmp

Filesize
88KB

Download
memory/1304-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1304-56-0x0000000004F10000-0x0000000004F88000-memory.dmp

Filesize
480KB

Download
memory/1304-57-0x0000000005660000-0x00000000056F2000-memory.dmp

Filesize
584KB

Download
memory/1396-81-0x0000000006FA0000-0x000000000711A000-memory.dmp

Filesize
1.5MB

Download
memory/1396-72-0x0000000006990000-0x0000000006B3C000-memory.dmp

Filesize
1.7MB

Download
memory/1396-79-0x0000000006FA0000-0x000000000711A000-memory.dmp

Filesize
1.5MB

Download
memory/1472-80-0x00000000001C0000-0x00000000001EF000-memory.dmp

Filesize
188KB

Download
memory/1472-78-0x00000000021F0000-0x0000000002283000-memory.dmp

Filesize
588KB

Download
memory/1472-75-0x000000004A810000-0x000000004A85C000-memory.dmp

Filesize
304KB

Download
memory/1472-77-0x0000000001EE0000-0x00000000021E3000-memory.dmp

Filesize
3.0MB

Download
memory/1472-76-0x00000000001C0000-0x00000000001EF000-memory.dmp

Filesize
188KB

Download
memory/1472-73-0x0000000000000000-mapping.dmp

Download
memory/1524-61-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1524-62-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1524-60-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1524-58-0x0000000000000000-mapping.dmp

Download
memory/1632-74-0x0000000000000000-mapping.dmp

Download
memory/1892-70-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/1892-71-0x0000000000280000-0x0000000000294000-memory.dmp

Filesize
80KB

Download
memory/1892-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1892-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1892-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1892-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1892-67-0x000000000041F110-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads