formbook | dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9

Analysis

max time kernel
149s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
05/02/2026, 15:41

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General

Target
dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe
Size 1.2MB
Sample260205-s41nfabv8a
SHA256 dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9
MD5 a65cfce786cd6b6fcb52b2e3071b63d2
SHA1 dd6e028faf007b5cc688b0a5568f4692054c3b1f
SHA512 bd825cb4375bb57fa05244c0af2f4f9ae0cb779f0a766a736486ca0a5895f0eafee8ee42cb7b9237d2e579840bab64e0bc72e6a4d6c059554d65b84ba463505c
SSDEEP 24576:8qDEvCTbMWu7rQYlBQcBiT6rprG8aA9lmNjjOdKPk:8TvC/MTQYxsWR7aA7CuM
TLSH
T1C545C00273D1C062FF9B92734B5AF6115BBC69260123E62F13981D7ABD701B1563E7A3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery formbook 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
behavioral1/memory/3492-16-0x0000000000400000-0x0000000000445000-memory.dmp	family_formbook

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 3492	1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe	89

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	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe
3492	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe
1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe
1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 3492	1296	dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe	89

C:\Users\Admin\AppData\Local\Temp\dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe
"C:\Users\Admin\AppData\Local\Temp\dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\dae94dd36a738eb6419a87daf1fc57bf0b7726bca3e5c7b05d39df9b88a916d9.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3492

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

aut3AC2.tmp

Path C:\Users\Admin\AppData\Local\Temp\aut3AC2.tmp
Size 276KB
SHA256 ad6bed8774503596904492119d89dfcc23c2b1df9f2393aef8eebce1930f367c
MD5 ce41981174831075f3bd1754c06e148a
SHA1 dfb51d7ceda17ae1f3e91ff64924f11c340bede1
SHA512 94c5d4ff8a158a5553a7f78bbc1ea9bc4352483e42a9a3f2568f554c08b9031eefc8df39bcdc2dab7fd0260aa39b73beaf27be3801f38a81ca197d83943b4def
SSDEEP 6144:GWQCm7HyXFcoMQWigJX66J51ZmMc9L1pTl23f1ApU87IZXQSAPIT:GxSXFcoMZJNJvZLIpj2998MdpAPIT
TLSH
T1415401DA6E097690F74DF4E3087E1F7309DD61F4B40EA2290B9685752CF699382C93CA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1296-11-0x0000000003160000-0x0000000003164000-memory.dmp

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memory/3492-12-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/3492-13-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/3492-14-0x0000000001400000-0x000000000174A000-memory.dmp

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memory/3492-15-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/3492-16-0x0000000000400000-0x0000000000445000-memory.dmp

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