formbook | 8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d

Analysis

max time kernel
148s
max time network
138s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260617-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
23/06/2026, 08:27

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General

Target
_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
Size 176KB
Sample260623-kclffabs9p
SHA256 8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
MD5 eaccbc831b2fc77bdcd8eb19f5f3dee1
SHA1 9f70c4d1ab267ffc886ca66f1d46e51b43c393a6
SHA512 c01691f06101c3e7e1e86fc8018636e42c9dc18a0ed336244f37821d6c2c0e1c7c17b60a5306c629532e8bca56535f694a00bd53771fca164d954bbe1022667d
SSDEEP 3072:blnffjVrwUak7uVPvA5fCDlS2wpjJYrQFCIikHOlSE5i/4xhQRZKXGfJI1ok:blnhrwtVPvOKDo2wjrTikHE5vxiKXGfU
TLSH
T12B04F15532A0C863D6E206701E765AF6EABF9D511594030B6F283FAB7D335B2810F793
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/5836-37-0x0000000000060000-0x00000000000A6000-memory.dmp	family_formbook

Loads dropped DLL 2 IoCs

pid	Process
416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
1	drive.google.com
2	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
5836	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
5836	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5276	5836	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 2 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	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
5836	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 416 wrote to memory of 1528	416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe	89
PID 416 wrote to memory of 5836	416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe	90
PID 416 wrote to memory of 5836	416	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe	90
PID 5836 wrote to memory of 1944	5836	_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe	91

C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
"C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:416
- C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
  "C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe"
  2⤵
  PID:1528
- C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
  "C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5836
- - C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe
    "C:\Users\Admin\AppData\Local\Temp\_8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d.exe"
    3⤵
    PID:1944
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5836 -s 1132
    3⤵
    - Program crash
    PID:5276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5836 -ip 5836
1⤵
PID:5104

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nscEED2.tmp\System.dll
Size 12KB
SHA256 996645d7f16a6294babb6da83478062aed7b72318d7a51b66e90ab5d3edc51a5
MD5 6d08f0d5503bb100b8429fefaad163a6
SHA1 2a79aac2d3b715326c3dcd3c5cf2e33de3632a0a
SHA512 e259b1aff39c533e3e31cf4eb323c8eb22b2beeb5d8ce2c929de30702a6d8ab8076aeacc983d724b05d7d99a6de8c4d239bd159642c7e75fb86faef683360a1f
SSDEEP 192:cjHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZr0QPi:s/Qlt7wiij/lMRv/9V4brr
TLSH
T1A9427C1297B089F2F151093819667F2A6FBEAC5C23F405A3CFE304C63D212CB9879243
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/416-19-0x0000000073ED5000-0x0000000073ED6000-memory.dmp

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memory/5836-20-0x0000000000400000-0x00000000016E6000-memory.dmp

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memory/5836-21-0x0000000076FBF000-0x0000000076FC0000-memory.dmp

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memory/5836-22-0x0000000076F7D000-0x0000000076F7E000-memory.dmp

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memory/5836-23-0x0000000077045000-0x0000000077046000-memory.dmp

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memory/5836-33-0x0000000076F11000-0x000000007703F000-memory.dmp

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memory/5836-34-0x0000000000060000-0x00000000000A6000-memory.dmp

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memory/5836-32-0x0000000000400000-0x00000000016E6000-memory.dmp

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memory/5836-35-0x0000000035F10000-0x0000000036284000-memory.dmp

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memory/5836-37-0x0000000000060000-0x00000000000A6000-memory.dmp

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