formbook | b6a9be2713b7637f854550ad474b5214e18bb760da0142e02b288510d2c6175e

General

Target

51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
Size

524KB
MD5

28f253dd70ec114954cb9720bc2e833b
SHA1

89bbf2aad3258e47a338d0344509fd051cac842c
SHA256

51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335
SHA512

15b8d8afd9eaf879dd2587dd923b481c7de71653b49f7c0adb91e253d276a92661721bf552c18ec5243e1f10078f8d09b5d2e1bacbc0f5f364cf4a8d3857848c
SSDEEP

12288:AUi2iNekn+gWfltKCgfNQoJNu7OcJeDWh5lgCFI:AUi1Qk1Wn6aNYDW9

Score

10^/10

formbook oy1n discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

oy1n

Decoy

tammiestakeyqynaxbsjxgt.com

whbx-sfgsge1009-xvsdf.xyz

0ass52.icu

alfer-creacions.com

jsscr5.icu

kclearyart.com

studioandric.com

2zem.online

convert-course.com

fonduesetdirect.com

pohonrambutan.com

dousujing.net

dizzydamesdesigns.com

sphetbiubr318-nifty.xyz

bolader.com

casaceramique.com

ugrza.tech

pakzak.com

mjrandsons.com

happyandrelaxedstore.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1136-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1948 set thread context of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98

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

System Information Discovery
T1082

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	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
1136	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
1136	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 656	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	95
PID 1948 wrote to memory of 656	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	95
PID 1948 wrote to memory of 656	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	95
PID 1948 wrote to memory of 2076	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	96
PID 1948 wrote to memory of 2076	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	96
PID 1948 wrote to memory of 2076	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	96
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98
PID 1948 wrote to memory of 1136	1948	51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe	98

C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dVujTFoJVTvyEe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp13B7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:656
- C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
  "C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"
  2⤵
  PID:2076
- C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
  "C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1136-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1136-20-0x0000000001670000-0x00000000019BA000-memory.dmp

Filesize
3.3MB

Download
memory/1136-19-0x0000000001670000-0x00000000019BA000-memory.dmp

Filesize
3.3MB

Download
memory/1948-6-0x0000000004D90000-0x0000000004D9E000-memory.dmp

Filesize
56KB

Download
memory/1948-4-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/1948-5-0x0000000004CA0000-0x0000000004CAA000-memory.dmp

Filesize
40KB

Download
memory/1948-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/1948-7-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/1948-8-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/1948-9-0x0000000005A30000-0x0000000005ACC000-memory.dmp

Filesize
624KB

Download
memory/1948-10-0x0000000005C20000-0x0000000005C78000-memory.dmp

Filesize
352KB

Download
memory/1948-3-0x0000000004BD0000-0x0000000004C62000-memory.dmp

Filesize
584KB

Download
memory/1948-18-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/1948-2-0x0000000005280000-0x0000000005824000-memory.dmp

Filesize
5.6MB

Download
memory/1948-1-0x0000000000170000-0x00000000001F8000-memory.dmp

Filesize
544KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads