formbook | 414d16ac1656479f29b79ce615917bf9366897d95fa1bec2541ae3df75e45a79

General

Target

Approval for transfer.exe
Size

844KB
MD5

619e65f0f0adb123cdd209ee39a569f7
SHA1

f7832a4580bfb0a1be700def757201dd7baea66e
SHA256

414d16ac1656479f29b79ce615917bf9366897d95fa1bec2541ae3df75e45a79
SHA512

422b5e47257ad8774bae8d5d35ea01d9958cd5320269b71307b55bcb7bb3d67f51cd84fe9379c73c0a418726f5b86061568f83c97fe7773c555771354e43952d
SSDEEP

12288:ehkDgouVA2nxKkorvdRgQriDwOIxmxiZnYQE7PJcE4aCqcECbBsRiWVPeXFw:uRmJkcoQricOIQxiZY1iaCqcd6RNwFw

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

Signatures

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

Formbook payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2976-12-0x0000000000510000-0x000000000053F000-memory.dmp	formbook
behavioral2/memory/2976-16-0x0000000000510000-0x000000000053F000-memory.dmp	formbook
behavioral2/memory/3200-21-0x0000000000D20000-0x0000000000D4F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Approval for transfer.exesvchost.exechkdsk.exe

description	pid	process	target process
PID 3804 set thread context of 2976	3804	Approval for transfer.exe	svchost.exe
PID 2976 set thread context of 3488	2976	svchost.exe	Explorer.EXE
PID 3200 set thread context of 3488	3200	chkdsk.exe	Explorer.EXE

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

Approval for transfer.exechkdsk.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Approval for transfer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe
Modifies registry class 1 IoCs

Processes:

Explorer.EXE

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Explorer.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

svchost.exechkdsk.exe

pid	process
2976	svchost.exe
2976	svchost.exe
2976	svchost.exe
2976	svchost.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe
3200	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Approval for transfer.exesvchost.exechkdsk.exe

pid process

3804 Approval for transfer.exe
3804 Approval for transfer.exe
2976 svchost.exe
2976 svchost.exe
2976 svchost.exe
3200 chkdsk.exe
3200 chkdsk.exe

pid	process
3804	Approval for transfer.exe
3804	Approval for transfer.exe
2976	svchost.exe
2976	svchost.exe
2976	svchost.exe
3200	chkdsk.exe
3200	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

Processes:

svchost.exeExplorer.EXEchkdsk.exe

description	pid	process
Token: SeDebugPrivilege	2976	svchost.exe
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeDebugPrivilege	3200	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

3488 Explorer.EXE
3488 Explorer.EXE
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3488 Explorer.EXE

pid	process
3488	Explorer.EXE
3488	Explorer.EXE

pid	process
3488	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Approval for transfer.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3804 wrote to memory of 2976	3804	Approval for transfer.exe	svchost.exe
PID 3804 wrote to memory of 2976	3804	Approval for transfer.exe	svchost.exe
PID 3804 wrote to memory of 2976	3804	Approval for transfer.exe	svchost.exe
PID 3804 wrote to memory of 2976	3804	Approval for transfer.exe	svchost.exe
PID 3488 wrote to memory of 3200	3488	Explorer.EXE	chkdsk.exe
PID 3488 wrote to memory of 3200	3488	Explorer.EXE	chkdsk.exe
PID 3488 wrote to memory of 3200	3488	Explorer.EXE	chkdsk.exe
PID 3200 wrote to memory of 448	3200	chkdsk.exe	cmd.exe
PID 3200 wrote to memory of 448	3200	chkdsk.exe	cmd.exe
PID 3200 wrote to memory of 448	3200	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Users\Admin\AppData\Local\Temp\Approval for transfer.exe
  "C:\Users\Admin\AppData\Local\Temp\Approval for transfer.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3804
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Approval for transfer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2976
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3200
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2976-12-0x0000000000510000-0x000000000053F000-memory.dmp

Filesize
188KB

Download
memory/2976-15-0x0000000001200000-0x000000000154A000-memory.dmp

Filesize
3.3MB

Download
memory/2976-17-0x0000000001150000-0x0000000001164000-memory.dmp

Filesize
80KB

Download
memory/2976-16-0x0000000000510000-0x000000000053F000-memory.dmp

Filesize
188KB

Download
memory/3200-19-0x00000000005D0000-0x00000000005DA000-memory.dmp

Filesize
40KB

Download
memory/3200-20-0x00000000005D0000-0x00000000005DA000-memory.dmp

Filesize
40KB

Download
memory/3200-21-0x0000000000D20000-0x0000000000D4F000-memory.dmp

Filesize
188KB

Download
memory/3488-18-0x00000000089B0000-0x0000000008B04000-memory.dmp

Filesize
1.3MB

Download
memory/3488-25-0x00000000083C0000-0x00000000084A1000-memory.dmp

Filesize
900KB

Download
memory/3488-26-0x00000000083C0000-0x00000000084A1000-memory.dmp

Filesize
900KB

Download
memory/3488-28-0x00000000083C0000-0x00000000084A1000-memory.dmp

Filesize
900KB

Download
memory/3804-11-0x0000000004040000-0x0000000004240000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads