formbook | 55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4

General

Target

55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe
Size

576KB
MD5

5d2e426cf89c66fb33b01a84007ea057
SHA1

25b77c8f4445a2321bf9c8ed861d7f016fbc02d6
SHA256

55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
SHA512

9427881394038aaab2a371e725412e6377b870549905806049c89feb4554600d45adc93e68306264d13095362bf190e73f821bcbaab1939b991ddbb31e789a84
SSDEEP

12288:3/4qjqYBC75gyYzhGHW1EDO6kjLa461fLB/PNfMLI:3ApUGWQWuKzi46BLBXF7

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 payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/336-14-0x0000000000400000-0x000000000042F000-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
2476	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33

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	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
336	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe
2476	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2476	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2476	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	31
PID 1724 wrote to memory of 2476	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	31
PID 1724 wrote to memory of 2476	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	31
PID 1724 wrote to memory of 2476	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	31
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33
PID 1724 wrote to memory of 336	1724	55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe	33

C:\Users\Admin\AppData\Local\Temp\55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe
"C:\Users\Admin\AppData\Local\Temp\55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1724
- 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\55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- C:\Users\Admin\AppData\Local\Temp\55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe
  "C:\Users\Admin\AppData\Local\Temp\55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:336

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/336-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/336-19-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/336-15-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/336-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/336-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/336-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1724-3-0x0000000000840000-0x0000000000850000-memory.dmp

Filesize
64KB

Download
memory/1724-6-0x0000000000FB0000-0x0000000001026000-memory.dmp

Filesize
472KB

Download
memory/1724-5-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-4-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/1724-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/1724-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-16-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-1-0x0000000001020000-0x00000000010B6000-memory.dmp

Filesize
600KB

Download

Analysis

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