formbook | 4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2024 14:02

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General

Target

4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe
Size

1.1MB
MD5

3739784b84b401cf916f89291adfdbe0
SHA1

5dfa19527eab46a5da1fbbee052d2bf1938385f7
SHA256

4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a
SHA512

e918a09910266f4c1d981f6cc8d949e4e480de9d17c305a996d7cb061f156aed8fd2560297df28f16dc672b407cd45feb615db1a0f5f14d5f2ec5e0d586d29ee
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaC0a/P8ly39dq1TyohqbvXcXo9:7JZoQrbTFZY1iaCtiWqZyWqcO

Score

10^/10

formbook c24t discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/1552-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1552-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1552-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3672-16-0x00000000001A0000-0x00000000001CF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 660 set thread context of 1552	660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe	85
PID 1552 set thread context of 3412	1552	svchost.exe	55
PID 1552 set thread context of 3412	1552	svchost.exe	55
PID 3672 set thread context of 3412	3672	chkdsk.exe	55

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.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
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe
3672	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
1552	svchost.exe
3672	chkdsk.exe
3672	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1552	svchost.exe
Token: SeDebugPrivilege	3672	chkdsk.exe
Token: SeShutdownPrivilege	3412	Explorer.EXE
Token: SeCreatePagefilePrivilege	3412	Explorer.EXE
Token: SeShutdownPrivilege	3412	Explorer.EXE
Token: SeCreatePagefilePrivilege	3412	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3412	Explorer.EXE
3412	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3412	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 660 wrote to memory of 1552	660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe	85
PID 660 wrote to memory of 1552	660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe	85
PID 660 wrote to memory of 1552	660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe	85
PID 660 wrote to memory of 1552	660	4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe	85
PID 3412 wrote to memory of 3672	3412	Explorer.EXE	86
PID 3412 wrote to memory of 3672	3412	Explorer.EXE	86
PID 3412 wrote to memory of 3672	3412	Explorer.EXE	86
PID 3672 wrote to memory of 4180	3672	chkdsk.exe	87
PID 3672 wrote to memory of 4180	3672	chkdsk.exe	87
PID 3672 wrote to memory of 4180	3672	chkdsk.exe	87

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:3412
- C:\Users\Admin\AppData\Local\Temp\4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe
  "C:\Users\Admin\AppData\Local\Temp\4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:660
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\4b0562351e83e3d40dfa638ce4811a2699562c3bb4ea1d3afb4f76d00ad0b33a.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1552
- 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:3672
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4180

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/660-2-0x0000000003C60000-0x0000000003E60000-memory.dmp

Filesize
2.0MB

Download
memory/1552-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1552-4-0x0000000001900000-0x0000000001C4A000-memory.dmp

Filesize
3.3MB

Download
memory/1552-7-0x0000000001860000-0x0000000001874000-memory.dmp

Filesize
80KB

Download
memory/1552-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1552-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1552-11-0x00000000018E0000-0x00000000018F4000-memory.dmp

Filesize
80KB

Download
memory/3412-13-0x0000000002B10000-0x0000000002C57000-memory.dmp

Filesize
1.3MB

Download
memory/3412-12-0x00000000080C0000-0x0000000008245000-memory.dmp

Filesize
1.5MB

Download
memory/3412-8-0x0000000002B10000-0x0000000002C57000-memory.dmp

Filesize
1.3MB

Download
memory/3412-17-0x00000000080C0000-0x0000000008245000-memory.dmp

Filesize
1.5MB

Download
memory/3412-20-0x00000000086F0000-0x00000000087DA000-memory.dmp

Filesize
936KB

Download
memory/3412-21-0x00000000086F0000-0x00000000087DA000-memory.dmp

Filesize
936KB

Download
memory/3412-23-0x00000000086F0000-0x00000000087DA000-memory.dmp

Filesize
936KB

Download
memory/3672-14-0x0000000000C60000-0x0000000000C6A000-memory.dmp

Filesize
40KB

Download
memory/3672-15-0x0000000000C60000-0x0000000000C6A000-memory.dmp

Filesize
40KB

Download
memory/3672-16-0x00000000001A0000-0x00000000001CF000-memory.dmp

Filesize
188KB

Download