formbook | 03d6fa79b7d5bbe9e643da58bb6319f2f2532c7ae616d79d1701ad0e5dc232f8

General

Target

Payment Copy.exe
Size

556KB
MD5

8084dc1e74d897de6ff79693f1def3bd
SHA1

4f1537c3f3eada685e439ccc11b7bcf1c1d67188
SHA256

55d2e2a1b94feedfc083326d9096acec664eb4fa66a752650caa62cb9b6c9914
SHA512

e31c533c05d187028625f53aed3f50de22f704472e68725735876b79dec2a55251361ac2c3606d8796feeb9320f69a259a93222602c354d2e066248c0e4dbebf
SSDEEP

12288:qdz83kC/aIIAuyO0KEB0gKkuxzYjlwZRJCnhs:qdzVWsV2KEBriyjIRJA2

Score

10^/10

formbook b3n1 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b3n1

Decoy

alexandragrows.com

shellload.com

stanleyrorke.com

glasurit.us

facebookismetaverse.com

astoundingaffairs.com

facom.us

dysonsaleoutlet.us

obtengaunitedhealthcare.com

sebastianroofrepairs.com

saltvent.com

littleonesclub.com

webamazoncardshopmail.xyz

lutam.xyz

myfirstpsgame.com

comline.cloud

valueinsightfororacle.com

congregacionansestral.com.co

paypal-uk.xyz

facebookversuzmeta.com

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
behavioral1/memory/2788-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2788-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2932-19-0x0000000000180000-0x00000000001AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2776	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	Payment Copy.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 2788	2112	Payment Copy.exe	30
PID 2788 set thread context of 1204	2788	Payment Copy.exe	21
PID 2932 set thread context of 1204	2932	netsh.exe	21

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	Payment Copy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2788	Payment Copy.exe
2788	Payment Copy.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe
2932	netsh.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2788	Payment Copy.exe
2788	Payment Copy.exe
2788	Payment Copy.exe
2932	netsh.exe
2932	netsh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	Payment Copy.exe
Token: SeDebugPrivilege	2932	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 2112 wrote to memory of 2788	2112	Payment Copy.exe	30
PID 1204 wrote to memory of 2932	1204	Explorer.EXE	31
PID 1204 wrote to memory of 2932	1204	Explorer.EXE	31
PID 1204 wrote to memory of 2932	1204	Explorer.EXE	31
PID 1204 wrote to memory of 2932	1204	Explorer.EXE	31
PID 2932 wrote to memory of 2776	2932	netsh.exe	32
PID 2932 wrote to memory of 2776	2932	netsh.exe	32
PID 2932 wrote to memory of 2776	2932	netsh.exe	32
PID 2932 wrote to memory of 2776	2932	netsh.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2788
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\SysWOW64\netsh.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:2932
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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

C:\Users\Admin\AppData\Local\Temp\nsjEF8E.tmp\sydrnwxz.dll

Filesize
138KB

MD5
f50d919a09c776df2c4fa63e3dcd4526

SHA1
917c24b146a6a17ec1cfaebde50199256b4126da

SHA256
f2635ca10d2ad2503eefbbfd4673e9c8ad66f363d0117fc4fbd79554ca482f20

SHA512
5b578e7197b7b584185ea83b91938d4b9f152703c6039f98c096423cf94111e2f7146789dea548a2f317d1abf623356d36b4e047ff1d37835572b84020c89bf2

Download Submit
memory/1204-12-0x00000000040E0000-0x00000000042E0000-memory.dmp

Filesize
2.0MB

Download
memory/1204-13-0x0000000005230000-0x0000000005356000-memory.dmp

Filesize
1.1MB

Download
memory/1204-20-0x0000000005230000-0x0000000005356000-memory.dmp

Filesize
1.1MB

Download
memory/2112-7-0x0000000010021000-0x0000000010023000-memory.dmp

Filesize
8KB

Download
memory/2788-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2788-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-16-0x00000000017A0000-0x00000000017BB000-memory.dmp

Filesize
108KB

Download
memory/2932-18-0x00000000017A0000-0x00000000017BB000-memory.dmp

Filesize
108KB

Download
memory/2932-19-0x0000000000180000-0x00000000001AF000-memory.dmp

Filesize
188KB

Download

Analysis

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