formbook | 748db637949a17a8b9267e3c6dd789ada3ba9067427f6abe22738655d9086453

General

Target

bobbyx.exe
Size

943KB
MD5

c578ab7bf915d54643e598c11c9922ea
SHA1

641b517407aa07cfc70535dff27c667f6f104585
SHA256

16a6d8b24f3aeaa9e7612b8dec2f4c67332dca369774ef8200a076716f89defb
SHA512

3d6182d73242910be74be87b6b5fe9375b34dfc20ea1e66086b72c094beff01d931305121e6218c696f82c3b97e4d4b820ef5df045cc601326b5bc20e2902b5f
SSDEEP

24576:hM8VvGeIup/oNMO0q70ALHbvD4WL4We47y47nAzVWI:JCX+O0qIAzv4WF77X7nwW

Score

10^/10

formbook dtn discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dtn

Decoy

sapphirelingerie.com

lsleep.com

mymemama.com

meatpillows.com

gifts2loveone.com

mydalmation.com

hvacsense.com

corr-new-001.host

extremeasset.com

yevhenia-fitness.com

waiwaizhuan.com

sczydyhgwwgc.com

vdddlqhqj.icu

befierce.today

targetkitchen.com

btfjx.com

siteoficial-compreaqui.com

spinecorcenters.com

truestrengthcoaching.com

truebluenetwork.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
behavioral2/memory/4992-8-0x0000000005560000-0x0000000005568000-memory.dmp	CustAttr

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/2768-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2768-17-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4992 set thread context of 2768	4992	bobbyx.exe	102
PID 2768 set thread context of 3540	2768	bobbyx.exe	56
PID 1920 set thread context of 3540	1920	netsh.exe	56

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	bobbyx.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 42 IoCs

pid	Process
2768	bobbyx.exe
2768	bobbyx.exe
2768	bobbyx.exe
2768	bobbyx.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe
1920	netsh.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2768	bobbyx.exe
2768	bobbyx.exe
2768	bobbyx.exe
1920	netsh.exe
1920	netsh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	bobbyx.exe
Token: SeDebugPrivilege	1920	netsh.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 4992 wrote to memory of 2768	4992	bobbyx.exe	102
PID 3540 wrote to memory of 1920	3540	Explorer.EXE	103
PID 3540 wrote to memory of 1920	3540	Explorer.EXE	103
PID 3540 wrote to memory of 1920	3540	Explorer.EXE	103
PID 1920 wrote to memory of 1136	1920	netsh.exe	104
PID 1920 wrote to memory of 1136	1920	netsh.exe	104
PID 1920 wrote to memory of 1136	1920	netsh.exe	104

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\bobbyx.exe
  "C:\Users\Admin\AppData\Local\Temp\bobbyx.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4992
- - C:\Users\Admin\AppData\Local\Temp\bobbyx.exe
    "C:\Users\Admin\AppData\Local\Temp\bobbyx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2768
- 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:1920
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\bobbyx.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1136

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/1920-22-0x00000000012A0000-0x00000000012BE000-memory.dmp

Filesize
120KB

Download
memory/1920-20-0x00000000012A0000-0x00000000012BE000-memory.dmp

Filesize
120KB

Download
memory/2768-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2768-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2768-18-0x0000000000FA0000-0x0000000000FB4000-memory.dmp

Filesize
80KB

Download
memory/2768-15-0x0000000000FC0000-0x000000000130A000-memory.dmp

Filesize
3.3MB

Download
memory/3540-30-0x0000000004590000-0x00000000046DE000-memory.dmp

Filesize
1.3MB

Download
memory/3540-28-0x0000000004590000-0x00000000046DE000-memory.dmp

Filesize
1.3MB

Download
memory/3540-27-0x0000000004590000-0x00000000046DE000-memory.dmp

Filesize
1.3MB

Download
memory/3540-23-0x0000000002D20000-0x0000000002E4E000-memory.dmp

Filesize
1.2MB

Download
memory/3540-19-0x0000000002D20000-0x0000000002E4E000-memory.dmp

Filesize
1.2MB

Download
memory/4992-4-0x00000000051B0000-0x0000000005242000-memory.dmp

Filesize
584KB

Download
memory/4992-11-0x0000000005F80000-0x0000000006010000-memory.dmp

Filesize
576KB

Download
memory/4992-3-0x00000000056C0000-0x0000000005C64000-memory.dmp

Filesize
5.6MB

Download
memory/4992-10-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4992-9-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/4992-8-0x0000000005560000-0x0000000005568000-memory.dmp

Filesize
32KB

Download
memory/4992-5-0x00000000050F0000-0x00000000050FA000-memory.dmp

Filesize
40KB

Download
memory/4992-2-0x0000000005030000-0x00000000050CC000-memory.dmp

Filesize
624KB

Download
memory/4992-1-0x0000000000570000-0x0000000000662000-memory.dmp

Filesize
968KB

Download
memory/4992-6-0x0000000005370000-0x00000000053C6000-memory.dmp

Filesize
344KB

Download
memory/4992-7-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4992-14-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4992-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download

Analysis

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