formbook | 5017913bca4c5c1eaf5646e3983f9d8fc4e52f4a66406f46f3029952ae1fde70

Resubmissions

18/10/2022, 20:13

221018-yzmhxadee7 10

18/10/2022, 14:28

221018-rs73psgba7 10

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/10/2022, 14:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

payload.exe
Size

185KB
MD5

14382242e215d139c77c0ee9bb0c7ad6
SHA1

3951322a28787e4757fd3715d518103d6c054960
SHA256

5017913bca4c5c1eaf5646e3983f9d8fc4e52f4a66406f46f3029952ae1fde70
SHA512

1f4eef4d4685ca466702b45fa163e31089c031d2c491b4a14279bf28cba64a1aada928536df2970399510c4efb093ab08c7a05f0223fde66e751e20c26e07a4b
SSDEEP

3072:yXoVNpuuK+ArjKxjCpZomp/04AkJmHrwF8gUdSl5xCZqnr/xA3unPu:bfp5SZow/04tUuUdeSqri3gu

Score

10^/10

formbook knnt rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

knnt

Decoy

65SBubRb0cQTZyel+RrmtuIytWG7hIY=

lxY8gZLYuXPYl40/

IBCcbQLOUkWVL3cA/DkK2ei+vuKlXA==

4Lo6dar405m4hxqWl58sOc0=

4KyQBqNrzYWTI6Iv016m7BZVvuKlXA==

PyCmasPI0Lj0JTU=

hnoGNwDmybXus0PVH2S1Td2l0ZTJ

s4CRDagqgmaCo9bOBD4i

T5IbS3G46ZbN8RncbsWuAiWl0ZTJ

2vxQ/T6e+7vkjz9yriaOpBbO8bYapwAu

55558Jha4dgR7PCZrQ==

O9KAFJVY3c4V1Xi2rEGne4ZMtSY=

ZPih22lkYU3Yl40/

mCc1tbkLsWeH

MpbgOtnQvGu9jQ==

D6uAq4Gdj3UEkzmKkCOIW4BG

A3rp8NpDzp2Q

4WMaDz2Ff26SfX5xEaABgk0WTQ==

G16+qE5AFMf20h0PxfsyLIZMtSY=

az44qCVNL8dm2vG/nuEbI3K46HT5K44=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer 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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	payload.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 2640	4920	payload.exe	41
PID 548 set thread context of 2640	548	wscript.exe	41

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4920	payload.exe
4920	payload.exe
4920	payload.exe
4920	payload.exe
4920	payload.exe
4920	payload.exe
4920	payload.exe
4920	payload.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2640	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4920	payload.exe
4920	payload.exe
4920	payload.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe
548	wscript.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	payload.exe
Token: SeDebugPrivilege	548	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 548	2640	Explorer.EXE	83
PID 2640 wrote to memory of 548	2640	Explorer.EXE	83
PID 2640 wrote to memory of 548	2640	Explorer.EXE	83
PID 548 wrote to memory of 2592	548	wscript.exe	91
PID 548 wrote to memory of 2592	548	wscript.exe	91
PID 548 wrote to memory of 2592	548	wscript.exe	91

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\payload.exe
  "C:\Users\Admin\AppData\Local\Temp\payload.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:4920
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:548
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/548-137-0x0000000000AD0000-0x0000000000AF7000-memory.dmp

Filesize
156KB

Download
memory/548-138-0x00000000007C0000-0x00000000007ED000-memory.dmp

Filesize
180KB

Download
memory/548-139-0x00000000029D0000-0x0000000002D1A000-memory.dmp

Filesize
3.3MB

Download
memory/548-140-0x0000000002800000-0x000000000288F000-memory.dmp

Filesize
572KB

Download
memory/548-142-0x00000000007C0000-0x00000000007ED000-memory.dmp

Filesize
180KB

Download
memory/2640-135-0x0000000008D20000-0x0000000008ECA000-memory.dmp

Filesize
1.7MB

Download
memory/2640-141-0x0000000003480000-0x000000000356A000-memory.dmp

Filesize
936KB

Download
memory/2640-143-0x0000000003480000-0x000000000356A000-memory.dmp

Filesize
936KB

Download
memory/4920-132-0x0000000000830000-0x000000000085F000-memory.dmp

Filesize
188KB

Download
memory/4920-133-0x0000000000FB0000-0x00000000012FA000-memory.dmp

Filesize
3.3MB

Download
memory/4920-134-0x0000000000820000-0x0000000000830000-memory.dmp

Filesize
64KB

Download