formbook | 120449b84850ba5b41e73f85e2f178271dd1cd0b8743f1e5af6ef760aa39b199

Analysis

max time kernel
101s
max time network
104s
platform
windows11-21h2_x64
resource
win11-20250610-en
resource tags

arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
submitted
08/08/2025, 14:36

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General

Target
purchase order.exe
Size 687KB
Sample250808-rytr9syrx9
SHA256 120449b84850ba5b41e73f85e2f178271dd1cd0b8743f1e5af6ef760aa39b199
MD5 c285ea287c02bfe0d7ad9f6ce9e5161c
SHA1 065ce5f39353df024af1981b8e125fb860a75d56
SHA512 59396989e17011159e5ef16368d016d8ac641967777576c2fd9b9a8fa53edf9c755e29f1fc1223760d9267ea88da4ede768b73f5f9e8b59d8f63c510ae100831
SSDEEP 12288:bNlcIQECHcsM7CZ3ujXztb1QYdkq/0ePNvuEvQBZY49deEb2:TQDHcxWAjX/QYCqLJBvQBOB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook discovery rat spyware stealer trojan

Malware Config

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3024-13-0x0000000000400000-0x0000000000448000-memory.dmp	family_formbook

SmartAssembly .NET packer 1 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral2/memory/5720-5-0x0000000005D60000-0x0000000005D6A000-memory.dmp	SmartAssembly

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5720 set thread context of 3024	5720	purchase order.exe	78

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	purchase order.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe
3024	purchase order.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78
PID 5720 wrote to memory of 3024	5720	purchase order.exe	78

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5720
- C:\Users\Admin\AppData\Local\Temp\purchase order.exe
  "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3024

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3024-9-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3024-13-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3024-12-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3024-11-0x0000000001370000-0x00000000016C6000-memory.dmp

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memory/5720-3-0x0000000005BF0000-0x0000000005C00000-memory.dmp

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memory/5720-5-0x0000000005D60000-0x0000000005D6A000-memory.dmp

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memory/5720-6-0x0000000005BF0000-0x0000000005C00000-memory.dmp

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memory/5720-7-0x0000000007110000-0x00000000071A2000-memory.dmp

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memory/5720-8-0x0000000009780000-0x000000000981C000-memory.dmp

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memory/5720-4-0x00000000059E0000-0x00000000059EA000-memory.dmp

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memory/5720-0-0x0000000000E70000-0x0000000000F22000-memory.dmp

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memory/5720-2-0x0000000005A50000-0x0000000005AE2000-memory.dmp

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memory/5720-1-0x0000000005F60000-0x0000000006506000-memory.dmp

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