formbook | 655c67e665ce83295be8a9aca6b81a71cf90d3e80902a3d1b7b929f658706521

General

Target

Scan 2020227 pdf.exe
Size

694KB
MD5

a68a0b2d4331d61bb64172c9e9786937
SHA1

a004b631c2f2aa425e3e6d9e262fb3815aef293b
SHA256

461b27147a73d91bf21f4b821d7ae63b35a4efc32a87c14e718caa0644bb1dff
SHA512

ad688d2d08e9ca1fab35a90d2fb049c2cddd680d10fef27dbc0da150de69bf3e068aaa9f7d4da4b7efd87623113b4cd3cdbeedd7f3a6ea1b81a82190f6b2da33
SSDEEP

12288:fRmJ34UqACPQoKwICzPhVifZWFuGZkTP2bjmgqLMDburpEau8n:f0B4U+Qo5Ph4ZWkQ5egqLC4Wf2

Score

10^/10

formbook cxs discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cxs

Decoy

modersport.info

egoody.net

qcmutiny.com

theblueberryview.com

rupornofilm.com

katomaviation.com

therograms.net

borealisbasecamp.com

ebooksites.net

clavicon.net

burshopvarcs.win

neilmedchinhhang.com

allamericandreamcafe.info

floridasingers.com

blockchainworker.com

throneonline.com

newentrepreneurkit.com

tit.group

0s0eightother.men

las6p.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/2560-1-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2560-6-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2572	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 2560	2992	Scan 2020227 pdf.exe	30
PID 2560 set thread context of 1184	2560	Scan 2020227 pdf.exe	21
PID 2596 set thread context of 1184	2596	explorer.exe	21

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	Scan 2020227 pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2992	Scan 2020227 pdf.exe
2560	Scan 2020227 pdf.exe
2560	Scan 2020227 pdf.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe
2596	explorer.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2992	Scan 2020227 pdf.exe
2560	Scan 2020227 pdf.exe
2560	Scan 2020227 pdf.exe
2560	Scan 2020227 pdf.exe
2596	explorer.exe
2596	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2560	Scan 2020227 pdf.exe
Token: SeDebugPrivilege	2596	explorer.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2560	2992	Scan 2020227 pdf.exe	30
PID 2992 wrote to memory of 2560	2992	Scan 2020227 pdf.exe	30
PID 2992 wrote to memory of 2560	2992	Scan 2020227 pdf.exe	30
PID 2992 wrote to memory of 2560	2992	Scan 2020227 pdf.exe	30
PID 1184 wrote to memory of 2596	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2596	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2596	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2596	1184	Explorer.EXE	31
PID 2596 wrote to memory of 2572	2596	explorer.exe	32
PID 2596 wrote to memory of 2572	2596	explorer.exe	32
PID 2596 wrote to memory of 2572	2596	explorer.exe	32
PID 2596 wrote to memory of 2572	2596	explorer.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\Scan 2020227 pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Scan 2020227 pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Users\Admin\AppData\Local\Temp\Scan 2020227 pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Scan 2020227 pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2560
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:2596
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Scan 2020227 pdf.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2572

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/1184-7-0x0000000000190000-0x0000000000290000-memory.dmp

Filesize
1024KB

Download
memory/1184-8-0x0000000007490000-0x0000000007632000-memory.dmp

Filesize
1.6MB

Download
memory/1184-13-0x0000000007490000-0x0000000007632000-memory.dmp

Filesize
1.6MB

Download
memory/2560-1-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2560-6-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2560-10-0x0000000000430000-0x0000000000497000-memory.dmp

Filesize
412KB

Download
memory/2596-9-0x0000000000960000-0x0000000000BE1000-memory.dmp

Filesize
2.5MB

Download
memory/2596-12-0x0000000000960000-0x0000000000BE1000-memory.dmp

Filesize
2.5MB

Download
memory/2992-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2992-4-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2992-2-0x0000000000461000-0x000000000046A000-memory.dmp

Filesize
36KB

Download

Analysis

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