formbook | d7b27383e46ef66478db4728b6ebfe7ab62d7ad5acde44335ddb50e66d561f83

Analysis

max time kernel
150s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/08/2026, 22:53

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General

Target
rWaybillNo_4630813235.exe
Size 1.1MB
Sample260814-2tx91atycs
SHA256 d7b27383e46ef66478db4728b6ebfe7ab62d7ad5acde44335ddb50e66d561f83
MD5 51a58c238986fcaaaf77c3c6d1a9e56d
SHA1 a9e6f9b127622980042f60fcbc1307a44b0d6003
SHA512 b29c6f79dbed4487c404ab2a3486e30c09269a9498263954813ed875788b31227b1018c120276de66106f480af02c0a9555c96007526cb761d7ebcd0d3ba025c
SSDEEP 24576:ztb20pkaCqT5TBWgNQ7aTUM3IJV0aVlA6Hq+6A:wVg5tQ7aTjkVXx5
TLSH
T1A745CF1273ED8361C3B25273BA257741BEBF7C2506A5F96B2FD4093DE820162521EA73
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery formbook rat spyware stealer trojan

Malware Config

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1212-12-0x0000000000400000-0x0000000000449000-memory.dmp	family_formbook

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4196 set thread context of 1212	4196	rWaybillNo_4630813235.exe	88

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1464	4196	WerFault.exe	87

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	rWaybillNo_4630813235.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe
1212	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4196	rWaybillNo_4630813235.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 1212	4196	rWaybillNo_4630813235.exe	88

C:\Users\Admin\AppData\Local\Temp\rWaybillNo_4630813235.exe
"C:\Users\Admin\AppData\Local\Temp\rWaybillNo_4630813235.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\rWaybillNo_4630813235.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 724
  2⤵
  - Program crash
  PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4196 -ip 4196
1⤵
PID:4896

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

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Downloads

memory/1212-9-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/1212-10-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/1212-11-0x0000000000B20000-0x0000000000E94000-memory.dmp

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memory/1212-12-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4196-8-0x0000000001A30000-0x0000000001A34000-memory.dmp

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