formbook | 841bae2dc530052caa7792ef242cc3baf8feb5f7329e772080fc773e800fd21b

General

Target

0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe
Size

826KB
MD5

1c2d54ab422f55cd61c6abe3f3b2e758
SHA1

ea778902f541bfc7270f976e133c71411e9a7b12
SHA256

0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781
SHA512

a15e94cc90fd3affd4048ffd2c6aba24e795f6ee0b146166169893dbb9ec9ef1fabf54ec58c95aae7ca5aea1cc5f123d93d5d00c5fdb5046a730e1cb1b6dc425
SSDEEP

24576:10S9LL4Qq7iC9cy3Zj/YL2fpMGxNhmfygyuDUpHUWB:uS9Lvqey3ZTYL0xNhm6gBIpHUWB

Score

10^/10

formbook b3gc discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b3gc

Decoy

weirdkult.com

thake.design

knittingandcrochetcraft.com

salurkoyu.com

petchoiceus.com

qemtnpcrr.icu

bjqgrd.com

mencariasdjegreggf.com

stiffler16cm.com

sleeperhut.com

bnos-iq.com

kakeprints.com

legalizetx.com

mrdjfuzz.com

udidzone.com

foundyourauto.email

stlouisshelf.com

thegoodmanagerproject.com

refund-uktax.com

baonian-design.com

Signatures

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

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

resource	yara_rule
behavioral1/memory/2308-3-0x00000000006F0000-0x0000000000702000-memory.dmp	CustAttr

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/1144-14-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2308 set thread context of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 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	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe
2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe
1144	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30
PID 2308 wrote to memory of 1144	2308	0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe	30

C:\Users\Admin\AppData\Local\Temp\0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe
"C:\Users\Admin\AppData\Local\Temp\0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Users\Admin\AppData\Local\Temp\0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe
  "C:\Users\Admin\AppData\Local\Temp\0dd71b416418079bff4bad29f3e4799d9bda2ce728187e99ef3f9fe7ea449781.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1144-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1144-16-0x0000000000900000-0x0000000000C03000-memory.dmp

Filesize
3.0MB

Download
memory/1144-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1144-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1144-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2308-3-0x00000000006F0000-0x0000000000702000-memory.dmp

Filesize
72KB

Download
memory/2308-6-0x0000000006310000-0x00000000063D6000-memory.dmp

Filesize
792KB

Download
memory/2308-7-0x00000000053B0000-0x0000000005434000-memory.dmp

Filesize
528KB

Download
memory/2308-5-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-4-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2308-0-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2308-2-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-15-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-1-0x0000000001350000-0x0000000001424000-memory.dmp

Filesize
848KB

Download

Analysis

Sharing