formbook | 81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd

Analysis

max time kernel
149s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 02:39

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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

Processes:

resource	yara_rule
behavioral2/memory/4644-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4644-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3232-11-0x00000000008F0000-0x000000000091F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exesvchost.exechkdsk.exe

description	pid	Process	procid_target
PID 3184 set thread context of 4644	3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 4644 set thread context of 3496	4644	svchost.exe	56
PID 3232 set thread context of 3496	3232	chkdsk.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

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exechkdsk.execmd.exe

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

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

svchost.exechkdsk.exe

pid	Process
4644	svchost.exe
4644	svchost.exe
4644	svchost.exe
4644	svchost.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe
3232	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exesvchost.exechkdsk.exe

pid	Process
3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
4644	svchost.exe
4644	svchost.exe
4644	svchost.exe
3232	chkdsk.exe
3232	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

svchost.exechkdsk.exe

description	pid	Process
Token: SeDebugPrivilege	4644	svchost.exe
Token: SeDebugPrivilege	3232	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe

pid	Process
3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe

pid	Process
3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe
3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid	Process
3496	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exeExplorer.EXEchkdsk.exe

description	pid	Process	procid_target
PID 3184 wrote to memory of 4644	3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 3184 wrote to memory of 4644	3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 3184 wrote to memory of 4644	3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 3184 wrote to memory of 4644	3184	81c2c232727f026964d15be5913f2c59921d6fd74f236c1b4f156bd1db84a7cd.exe	86
PID 3496 wrote to memory of 3232	3496	Explorer.EXE	87
PID 3496 wrote to memory of 3232	3496	Explorer.EXE	87
PID 3496 wrote to memory of 3232	3496	Explorer.EXE	87
PID 3232 wrote to memory of 1332	3232	chkdsk.exe	96
PID 3232 wrote to memory of 1332	3232	chkdsk.exe	96
PID 3232 wrote to memory of 1332	3232	chkdsk.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- 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:3184
- - 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:4644
- 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:3232
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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/3184-2-0x0000000003DD0000-0x0000000003FD0000-memory.dmp

Filesize
2.0MB

Download
memory/3232-9-0x0000000000E60000-0x0000000000E6A000-memory.dmp

Filesize
40KB

Download
memory/3232-11-0x00000000008F0000-0x000000000091F000-memory.dmp

Filesize
188KB

Download
memory/3232-10-0x0000000000E60000-0x0000000000E6A000-memory.dmp

Filesize
40KB

Download
memory/3496-12-0x0000000008740000-0x0000000008884000-memory.dmp

Filesize
1.3MB

Download
memory/3496-8-0x0000000008740000-0x0000000008884000-memory.dmp

Filesize
1.3MB

Download
memory/3496-16-0x0000000002EA0000-0x0000000002F3C000-memory.dmp

Filesize
624KB

Download
memory/3496-17-0x0000000002EA0000-0x0000000002F3C000-memory.dmp

Filesize
624KB

Download
memory/3496-19-0x0000000002EA0000-0x0000000002F3C000-memory.dmp

Filesize
624KB

Download
memory/4644-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4644-7-0x0000000001E70000-0x0000000001E84000-memory.dmp

Filesize
80KB

Download
memory/4644-4-0x0000000001B00000-0x0000000001E4A000-memory.dmp

Filesize
3.3MB

Download
memory/4644-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download