formbook | 81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd

Analysis

max time kernel
147s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-11-2024 22:43

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General

Target

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
Size

1.1MB
MD5

07c144d5f9c5a69037c579899fd39e18
SHA1

7af0bdd8a309b7e2c6a78cca7c44ebd6435e427b
SHA256

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd
SHA512

690a97afb907a1ebbf3da293379d3122bf44fbec5cbb28d3b1b3a7bd49e5be023f2ebb8a791c5aaaf8685746d776c1b3382322496e40b4a7888d1fd562e89dda
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCJzR2shY7LTNouXqGu:7JZoQrbTFZY1iaCpIUY7LGSC

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

resource	yara_rule
behavioral2/memory/1100-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1100-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4504-12-0x0000000000610000-0x000000000063F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4640 set thread context of 1100	4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 1100 set thread context of 3496	1100	svchost.exe	56
PID 4504 set thread context of 3496	4504	raserver.exe	56

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

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

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe
4504	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
1100	svchost.exe
1100	svchost.exe
1100	svchost.exe
4504	raserver.exe
4504	raserver.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	svchost.exe
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeDebugPrivilege	4504	raserver.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
3496	Explorer.EXE
3496	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3496	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 1100	4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 4640 wrote to memory of 1100	4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 4640 wrote to memory of 1100	4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 4640 wrote to memory of 1100	4640	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 3496 wrote to memory of 4504	3496	Explorer.EXE	88
PID 3496 wrote to memory of 4504	3496	Explorer.EXE	88
PID 3496 wrote to memory of 4504	3496	Explorer.EXE	88
PID 4504 wrote to memory of 5032	4504	raserver.exe	98
PID 4504 wrote to memory of 5032	4504	raserver.exe	98
PID 4504 wrote to memory of 5032	4504	raserver.exe	98

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:3496
- C:\Users\Admin\AppData\Local\Temp\81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
  "C:\Users\Admin\AppData\Local\Temp\81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe"
  2⤵
  - 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:4640
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1100
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2892
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5032

Network

MITRE ATT&CK Enterprise v15

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

Exfiltration

Impact

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Downloads

memory/1100-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1100-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1100-4-0x0000000001A00000-0x0000000001D4A000-memory.dmp

Filesize
3.3MB

Download
memory/1100-7-0x0000000001780000-0x0000000001794000-memory.dmp

Filesize
80KB

Download
memory/3496-13-0x000000000B1A0000-0x000000000B2DB000-memory.dmp

Filesize
1.2MB

Download
memory/3496-8-0x000000000B1A0000-0x000000000B2DB000-memory.dmp

Filesize
1.2MB

Download
memory/3496-17-0x0000000009C60000-0x0000000009DB5000-memory.dmp

Filesize
1.3MB

Download
memory/3496-18-0x0000000009C60000-0x0000000009DB5000-memory.dmp

Filesize
1.3MB

Download
memory/3496-20-0x0000000009C60000-0x0000000009DB5000-memory.dmp

Filesize
1.3MB

Download
memory/4504-9-0x00000000008B0000-0x00000000008CF000-memory.dmp

Filesize
124KB

Download
memory/4504-11-0x00000000008B0000-0x00000000008CF000-memory.dmp

Filesize
124KB

Download
memory/4504-12-0x0000000000610000-0x000000000063F000-memory.dmp

Filesize
188KB

Download
memory/4640-2-0x0000000004130000-0x0000000004330000-memory.dmp

Filesize
2.0MB

Download