formbook | b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-01-2025 03:26

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General

Target

b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
Size

1.3MB
MD5

75a969be7c422af6c6a23ad1ddf5a3d1
SHA1

212b7524b811796cbfc84ab234000a131b349904
SHA256

b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260
SHA512

a19d5de2628f724cb1405cba7b345b35e686d1d182c579cba6b1ed61390495ee0143a0b040b12c975790ac9f9f11672075ad4aca42ed4c2554a6a8f24bed3f6b
SSDEEP

24576:5qDEvCTbMWu7rQYlBQcBiT6rprG8aEw09a/RFr8zHiA:5TvC/MTQYxsWR7aEw4aX8

Score

10^/10

formbook a38m discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a38m

Decoy

rtfosters.net

ental-implants-97548.bond

raphic-design-degree-15820.bond

ompraninjas.shop

indmyusedcar.today

rumptraumasupport.net

uozwear.xyz

etron.xyz

dultlivebroadcast09.today

ypegen.net

arehouse-inventory-54057.bond

27961.pizza

ortable-ai.xyz

pioxc.xyz

nline-advertising-76059.bond

rendyshack.store

pa-services88.life

aftarpragmatic218gacor.online

yb1054.shop

8x189.xyz

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/408-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/408-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4244-11-0x0000000000880000-0x00000000008AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3448 set thread context of 408	3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	83
PID 408 set thread context of 3424	408	svchost.exe	56
PID 4244 set thread context of 3424	4244	NETSTAT.EXE	56

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	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4244	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
408	svchost.exe
408	svchost.exe
408	svchost.exe
408	svchost.exe
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE
4244	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
408	svchost.exe
408	svchost.exe
408	svchost.exe
4244	NETSTAT.EXE
4244	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	408	svchost.exe
Token: SeDebugPrivilege	4244	NETSTAT.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3448 wrote to memory of 408	3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	83
PID 3448 wrote to memory of 408	3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	83
PID 3448 wrote to memory of 408	3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	83
PID 3448 wrote to memory of 408	3448	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	83
PID 3424 wrote to memory of 4244	3424	Explorer.EXE	84
PID 3424 wrote to memory of 4244	3424	Explorer.EXE	84
PID 3424 wrote to memory of 4244	3424	Explorer.EXE	84
PID 4244 wrote to memory of 3420	4244	NETSTAT.EXE	85
PID 4244 wrote to memory of 3420	4244	NETSTAT.EXE	85
PID 4244 wrote to memory of 3420	4244	NETSTAT.EXE	85

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
  "C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.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:3448
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:408
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4244
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Replay Monitor

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Downloads

memory/408-7-0x0000000001C80000-0x0000000001C94000-memory.dmp

Filesize
80KB

Download
memory/408-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/408-4-0x0000000001800000-0x0000000001B4A000-memory.dmp

Filesize
3.3MB

Download
memory/408-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3424-12-0x0000000008C50000-0x0000000008D51000-memory.dmp

Filesize
1.0MB

Download
memory/3424-8-0x0000000008C50000-0x0000000008D51000-memory.dmp

Filesize
1.0MB

Download
memory/3424-16-0x0000000002FF0000-0x00000000030B5000-memory.dmp

Filesize
788KB

Download
memory/3424-17-0x0000000002FF0000-0x00000000030B5000-memory.dmp

Filesize
788KB

Download
memory/3424-19-0x0000000002FF0000-0x00000000030B5000-memory.dmp

Filesize
788KB

Download
memory/3448-2-0x0000000000E10000-0x0000000001210000-memory.dmp

Filesize
4.0MB

Download
memory/4244-10-0x00000000009A0000-0x00000000009AB000-memory.dmp

Filesize
44KB

Download
memory/4244-9-0x00000000009A0000-0x00000000009AB000-memory.dmp

Filesize
44KB

Download
memory/4244-11-0x0000000000880000-0x00000000008AF000-memory.dmp

Filesize
188KB

Download