formbook | ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93

General

Target

ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe
Size

554KB
MD5

d27430fd2be189b951dde1a9d2d9da9b
SHA1

3d357a23ca8fdf456e2759e895cefe823eb1acc7
SHA256

ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93
SHA512

543727835fcd1bf6e1a70372dd79c654dbe35a0aefc8b0e25dce7d2dfd8d524d6089c0f891a09a0451d3bc973de23baa7471a15d4b01b8ad423a162e1529d8ae
SSDEEP

12288:RMUSpoD2yYPWsb+5yRq5jDVJMWNfLBfmedCcI1sxJiyhhL:RCpo2ZWsbrQjDLT5dmedCyT

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 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2248-12-0x0000000000400000-0x000000000042F000-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
2720	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2284 set thread context of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2888	2248	WerFault.exe	33

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	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2720	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 2720	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	31
PID 2284 wrote to memory of 2720	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	31
PID 2284 wrote to memory of 2720	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	31
PID 2284 wrote to memory of 2720	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	31
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2284 wrote to memory of 2248	2284	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	33
PID 2248 wrote to memory of 2888	2248	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	34
PID 2248 wrote to memory of 2888	2248	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	34
PID 2248 wrote to memory of 2888	2248	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	34
PID 2248 wrote to memory of 2888	2248	ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe	34

C:\Users\Admin\AppData\Local\Temp\ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe
"C:\Users\Admin\AppData\Local\Temp\ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284
- 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\ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Users\Admin\AppData\Local\Temp\ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe
  "C:\Users\Admin\AppData\Local\Temp\ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2248
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 36
    3⤵
    - Program crash
    PID:2888

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/2248-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2248-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2248-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2248-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2284-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2284-1-0x00000000010B0000-0x0000000001140000-memory.dmp

Filesize
576KB

Download
memory/2284-2-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2284-3-0x0000000000570000-0x0000000000582000-memory.dmp

Filesize
72KB

Download
memory/2284-4-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2284-5-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2284-6-0x0000000005230000-0x00000000052A6000-memory.dmp

Filesize
472KB

Download
memory/2284-13-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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