formbook | 0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc

Analysis

max time kernel
149s
max time network
148s
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, 22:54

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General

Target
0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe
Size 1.2MB
Sample260527-2v2ntacy41
SHA256 0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc
MD5 823226bc9f2bae9e525082269745a26f
SHA1 bc33bde3aa80e8aeb0022690022ec8a1ad1a3a4a
SHA512 60de108d2c27f5e834f149b708266b8db7f0a66d77ddae3f5df349fbf86a116d5bbff250790104e8230997a4aa8791c4446a3f60c045f015ada950a9540a6578
SSDEEP 24576:w5EmXFtKaL4/oFe5T9yyXYfP1ijXdaOohkCqBxV:wPVt/LZeJbInQRaOEkB
TLSH
T13045BF027391C062FFAB92334B5AF6115BBC79260123A61F13981DB9FE705B1563E7A3
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/2768-17-0x0000000000400000-0x0000000000448000-memory.dmp	family_formbook

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1940 set thread context of 2768	1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3104	1940	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	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe
2768	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe
1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe
1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2768	1940	0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe	80

C:\Users\Admin\AppData\Local\Temp\0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe
"C:\Users\Admin\AppData\Local\Temp\0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.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:1940
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\0238b20b93f2e52440023b55ae7ba15061d12e4c29a573b42106983a48f54cfc.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 764
  2⤵
  - Program crash
  PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1940 -ip 1940
1⤵
PID:4620

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

aut5E8.tmp

Path C:\Users\Admin\AppData\Local\Temp\aut5E8.tmp
Size 288KB
SHA256 7f16f43ffb41028ea5c3eb7519abe760c78f7f5b774d7c1839ad42d2a2996810
MD5 2e6770d6d118744381fa47e1b212d665
SHA1 c991e828cc89ad4b00099cf712b706d6cf1f2e6e
SHA512 07792361be604d45cd7a94d0038b5671792e83f585f1ca15920908528559b5ed9a37e1e4119d60012db2dd33788127565578d1c49d7a734aeff19c18782cf86c
SSDEEP 6144:2TL2Db9nuK3Rv/X5yLqmsol0xvrfF5IatylW8ILZXfScicr:uLQb9ntHIPP0JrffITQR9XiS
TLSH
T11854122A389FD4460929D1C2DB515A9D2A1E6A64BC4E815E24FFC9C52E704F8DCEC3F3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1940-12-0x0000000000C20000-0x0000000001020000-memory.dmp

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memory/2768-13-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/2768-14-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/2768-15-0x0000000001D00000-0x0000000002056000-memory.dmp

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memory/2768-16-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/2768-17-0x0000000000400000-0x0000000000448000-memory.dmp

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