formbook | 01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7

Analysis

max time kernel
149s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
27/05/2026, 22:29

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General

Target
01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe
Size 1.1MB
Sample260527-2effmscx2w
SHA256 01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7
MD5 7b3f1ba4aea7ddf469a6aa70c1b12ac9
SHA1 e81937aee541439426a97a9b5344d8e00fab2c30
SHA512 c18faa8ab75be8933bc38d21f068c4062dbd90bc3e965651309d7c15564683df2d9521cc1575712d147b374bd8e6e531c263fede18e6d0944ff2cc0f04890d8e
SSDEEP 24576:Cu6J33O0c+JY5UZ+XC0kGso6FaWDwttEnsHV9HL6ctWY:ku0c++OCvkGs9FaWDwgnWDrcY
TLSH
T10545BE2273DD8360CB769173BF69B3012EBB7C654630B85B2F883D79A970161162D7A3
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/2792-10-0x0000000000400000-0x0000000000447000-memory.dmp	family_formbook

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4608 set thread context of 2792	4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2144	4608	WerFault.exe	79

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	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe
2792	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe
4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe
4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 2792	4608	01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe	80

C:\Users\Admin\AppData\Local\Temp\01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe
"C:\Users\Admin\AppData\Local\Temp\01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.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:4608
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\01b99e0d35462bb3802d64c1ce918fe78bed30c77ddcf2e9f734abd8f14fc6e7.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 768
  2⤵
  - Program crash
  PID:2144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4608 -ip 4608
1⤵
PID:4636

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

aut7DB.tmp

Path C:\Users\Admin\AppData\Local\Temp\aut7DB.tmp
Size 281KB
SHA256 83290966f572bbb83a585fdf56e849fe773aa0c5a12f16bc6197a73e3c0128f5
MD5 5045173c3b83bd60803760ea92d58ccd
SHA1 f063bf68e1401ee98ab884275e0eecfab52e244d
SHA512 98b46384d4bfc988b2a1fa07c133d4f9f50db6d72b4c98940f0f038846b50ba77bcfd1f45633db43f0156718e8887ed3d31ad4acba79d2560ff354cc03f82053
SSDEEP 6144:1EFD8IHgZJQ+SEzaC3seSeDfgvooUkrfHCTMofZAB:Y8Q+P3seSeQUMxQZAB
TLSH
T1C354121C218C17596E7A96891E1E2FEA3499051EACB00CDE530EF91F2D802B7FD75BD8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2792-7-0x0000000000400000-0x0000000000447000-memory.dmp

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memory/2792-8-0x0000000000400000-0x0000000000447000-memory.dmp

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memory/2792-9-0x0000000001D00000-0x0000000002056000-memory.dmp

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memory/2792-10-0x0000000000400000-0x0000000000447000-memory.dmp

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memory/4608-6-0x0000000001F50000-0x0000000001F54000-memory.dmp

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