formbook | 1783cab38631bf2258e78dedfb3669c9a6cd4fff79b57fe50ce47f3f788f6390

General

Target

Payment Slip.pdf.exe
Size

286KB
MD5

fd6e85afa80f7c36795bc58dc4d1fa86
SHA1

419dd6e6e6a1a6753ca51e1612ea6bc61a011d48
SHA256

985fb6bd28653c5012113b096e61bebb49fe5aeeb53c7a128d323803637cf6cd
SHA512

9d9279ddb6e3988371a7ca714ade52e4983eb7df7c3e6bdf322e530c44c730b8b43f4bb943800c842ee4b54bcdbf3341be066a05bdd4fa72e4e2b69db05c3a01
SSDEEP

6144:UhntRj86y2xrIYaHInYgeEVgaQSTxU2ZxmSHM/:KntR5tQtvE6tSxUYxDs

Score

10^/10

formbook tnk discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

tnk

Decoy

lafioletto.com

mgiuj.com

wolllafvixzies.win

wwwsbvip123.com

nadyaasnae.com

noticesinvoice2017.com

intercapati.com

tg8895.com

9245654874.com

lytsxc.info

rffuf3-liquidwebsites.com

verguet.com

peinturefleursetfemmes.com

xttmrama.com

cryptoinvestmentideas.com

kikumasacarparts.win

freeapk1.com

tasteofimagination.com

gxzyoa.com

cq-mingwei.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2932-12-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2932-16-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1652 set thread context of 2932	1652	Payment Slip.pdf.exe	31
PID 2932 set thread context of 1200	2932	Payment Slip.pdf.exe	21

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2724	2752	WerFault.exe	32

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	Payment Slip.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2932	Payment Slip.pdf.exe
2932	Payment Slip.pdf.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2932	Payment Slip.pdf.exe
2932	Payment Slip.pdf.exe
2932	Payment Slip.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	Payment Slip.pdf.exe
Token: SeShutdownPrivilege	1200	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1652 wrote to memory of 2932	1652	Payment Slip.pdf.exe	31
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2752	1200	Explorer.EXE	32
PID 2752 wrote to memory of 2724	2752	msiexec.exe	33
PID 2752 wrote to memory of 2724	2752	msiexec.exe	33
PID 2752 wrote to memory of 2724	2752	msiexec.exe	33
PID 2752 wrote to memory of 2724	2752	msiexec.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Users\Admin\AppData\Local\Temp\Payment Slip.pdf.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 268
    3⤵
    - Program crash
    PID:2724

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/1200-18-0x0000000004D50000-0x0000000004E36000-memory.dmp

Filesize
920KB

Download
memory/1200-25-0x0000000004D50000-0x0000000004E36000-memory.dmp

Filesize
920KB

Download
memory/1652-1-0x0000000074B40000-0x00000000750EB000-memory.dmp

Filesize
5.7MB

Download
memory/1652-2-0x0000000074B40000-0x00000000750EB000-memory.dmp

Filesize
5.7MB

Download
memory/1652-3-0x0000000074B40000-0x00000000750EB000-memory.dmp

Filesize
5.7MB

Download
memory/1652-4-0x0000000074B40000-0x00000000750EB000-memory.dmp

Filesize
5.7MB

Download
memory/1652-0-0x0000000074B41000-0x0000000074B42000-memory.dmp

Filesize
4KB

Download
memory/1652-13-0x0000000074B40000-0x00000000750EB000-memory.dmp

Filesize
5.7MB

Download
memory/2752-22-0x0000000000090000-0x00000000000A4000-memory.dmp

Filesize
80KB

Download
memory/2752-19-0x0000000000090000-0x00000000000A4000-memory.dmp

Filesize
80KB

Download
memory/2752-20-0x0000000000090000-0x00000000000A4000-memory.dmp

Filesize
80KB

Download
memory/2932-7-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2932-16-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2932-17-0x0000000000430000-0x0000000000444000-memory.dmp

Filesize
80KB

Download
memory/2932-14-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/2932-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-12-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2932-5-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download

Analysis

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