formbook | 83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a

General

Target

83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe
Size

754KB
MD5

606e6075bf7e419fc19c36e467b600a6
SHA1

91ab445e375df3853d963662e7b6134616e94dd0
SHA256

83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
SHA512

e10e3ef6e14ee29bccc695201efd98d6ac498c3ee718b4ba8834de70ab5324b078ff0f2a4efab9f3ecf9474da6b33ec9c0ed52e08a331b719f659eac38892cf0
SSDEEP

12288:xEoPN92Tuf/sv98Vx4PlsfMXuLjej1YhZ0DfMSgMmE:+oPN9eE/sv98VxGsfMCehYhCTMS8E

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2836-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2836-18-0x0000000000B70000-0x0000000000E73000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1372	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30

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 2 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	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2836	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe
1372	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 1372	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	29
PID 2280 wrote to memory of 1372	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	29
PID 2280 wrote to memory of 1372	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	29
PID 2280 wrote to memory of 1372	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	29
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30
PID 2280 wrote to memory of 2836	2280	83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe	30

C:\Users\Admin\AppData\Local\Temp\83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe
"C:\Users\Admin\AppData\Local\Temp\83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1372
- C:\Users\Admin\AppData\Local\Temp\83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe
  "C:\Users\Admin\AppData\Local\Temp\83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

Replay Monitor

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Downloads

memory/2280-6-0x0000000005C50000-0x0000000005CC6000-memory.dmp

Filesize
472KB

Download
memory/2280-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/2280-2-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-3-0x0000000001E90000-0x0000000001EA8000-memory.dmp

Filesize
96KB

Download
memory/2280-4-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/2280-5-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-1-0x0000000000810000-0x00000000008D2000-memory.dmp

Filesize
776KB

Download
memory/2280-14-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/2836-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2836-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2836-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2836-17-0x0000000000B70000-0x0000000000E73000-memory.dmp

Filesize
3.0MB

Download
memory/2836-18-0x0000000000B70000-0x0000000000E73000-memory.dmp

Filesize
3.0MB

Download

Analysis

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