formbook | 2f4a9b29967cbc586b47b4b04d0cc272387e591308c3665e3631d8fc10eed17c

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2023, 10:27

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General

Target

rockcor908.exe
Size

274KB
MD5

41d5451e60ff3e73b8443b3cce0a6cb8
SHA1

f50a1a4d2088bd33f3443285bc2ff0bec36e7c23
SHA256

33e3b47eae5dd2c0931b64dab1fa56868276ee8cadf3cda23e4310e7e640703f
SHA512

101b7da4dd71dbbd4989bc729f64f3380476892040464cc789a8fc18a43e27709c7a024263011ab5105a881fd9b7c06a8961022360f18bd697a3b7d0902a1987
SSDEEP

6144:/Ya6aRt/CCxhfRFdlGu0GISPDPCU8TDsTlfHd7i:/Y0z5hffdlGu0x2TxTd1i

Score

10^/10

formbook re29 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

re29

Decoy

barnstorm-music.com

gazzettadellapuglia.com

baratieistore.space

cdrjdkj.com

carlissablog.com

langlalang.com

2886365.com

aq993.cyou

jwjwjwjw.com

car-deals-80304.com

dikevolesas.info

buycialistablets.online

theplantgranny.net

detoxshopbr.store

imans.biz

fightingcock.co.uk

loveforfurbabies.com

eastcoastbeveragegroup.com

alaaeldinsoft.com

microshel.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4500-141-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4500-148-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4392-152-0x0000000000610000-0x000000000063F000-memory.dmp	formbook
behavioral2/memory/4392-154-0x0000000000610000-0x000000000063F000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
2136	keedyvzml.exe
4500	keedyvzml.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2136 set thread context of 4500	2136	keedyvzml.exe	85
PID 4500 set thread context of 3100	4500	keedyvzml.exe	51
PID 4392 set thread context of 3100	4392	NETSTAT.EXE	51

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
4392	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
4500	keedyvzml.exe
4500	keedyvzml.exe
4500	keedyvzml.exe
4500	keedyvzml.exe
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE
4392	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3100	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2136	keedyvzml.exe
4500	keedyvzml.exe
4500	keedyvzml.exe
4500	keedyvzml.exe
4392	NETSTAT.EXE
4392	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4500	keedyvzml.exe
Token: SeDebugPrivilege	4392	NETSTAT.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2136	2676	rockcor908.exe	84
PID 2676 wrote to memory of 2136	2676	rockcor908.exe	84
PID 2676 wrote to memory of 2136	2676	rockcor908.exe	84
PID 2136 wrote to memory of 4500	2136	keedyvzml.exe	85
PID 2136 wrote to memory of 4500	2136	keedyvzml.exe	85
PID 2136 wrote to memory of 4500	2136	keedyvzml.exe	85
PID 2136 wrote to memory of 4500	2136	keedyvzml.exe	85
PID 3100 wrote to memory of 4392	3100	Explorer.EXE	86
PID 3100 wrote to memory of 4392	3100	Explorer.EXE	86
PID 3100 wrote to memory of 4392	3100	Explorer.EXE	86
PID 4392 wrote to memory of 264	4392	NETSTAT.EXE	90
PID 4392 wrote to memory of 264	4392	NETSTAT.EXE	90
PID 4392 wrote to memory of 264	4392	NETSTAT.EXE	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Users\Admin\AppData\Local\Temp\rockcor908.exe
  "C:\Users\Admin\AppData\Local\Temp\rockcor908.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2676
- - C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe
    "C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe" C:\Users\Admin\AppData\Local\Temp\kzyrliwsvv.cg
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2136
  - - C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe
      "C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4500
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4392
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe"
    3⤵
    PID:264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe

Filesize
85KB

MD5
3148798066cee3756bbad253b0bfea35

SHA1
c5533b8aa9420fb525075d6f774f1de3ac861abb

SHA256
01add3cb9e4d7e024a09987a8ceea2c9602358744a4c9b599d677adcefc6c7d9

SHA512
ca9c7805fe5ddc1a35469776094aac4a6588ac26794fd55923463bbafb358f35d0df6c07b615525b232c8d248610c3a2f8ec89d71f28b9bab0276bfa34b3a598

Download Submit
C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe

Filesize
85KB

MD5
3148798066cee3756bbad253b0bfea35

SHA1
c5533b8aa9420fb525075d6f774f1de3ac861abb

SHA256
01add3cb9e4d7e024a09987a8ceea2c9602358744a4c9b599d677adcefc6c7d9

SHA512
ca9c7805fe5ddc1a35469776094aac4a6588ac26794fd55923463bbafb358f35d0df6c07b615525b232c8d248610c3a2f8ec89d71f28b9bab0276bfa34b3a598

Download Submit
C:\Users\Admin\AppData\Local\Temp\keedyvzml.exe

Filesize
85KB

MD5
3148798066cee3756bbad253b0bfea35

SHA1
c5533b8aa9420fb525075d6f774f1de3ac861abb

SHA256
01add3cb9e4d7e024a09987a8ceea2c9602358744a4c9b599d677adcefc6c7d9

SHA512
ca9c7805fe5ddc1a35469776094aac4a6588ac26794fd55923463bbafb358f35d0df6c07b615525b232c8d248610c3a2f8ec89d71f28b9bab0276bfa34b3a598

Download Submit
C:\Users\Admin\AppData\Local\Temp\kzyrliwsvv.cg

Filesize
6KB

MD5
6db4b316dc3f73d018856a11c069ffb2

SHA1
bfd012e266980486fe0e463288decddfc1d782b6

SHA256
299cef639836691e74da61f9a02a1ae6ebbeb1e10be62bca5d32467349e28bfe

SHA512
a7d2f40de453eee82375d5124040f17c8fdac30c840b1d5562d0428f71713cd261074f4b6e042e4c0043292efddf11f1700d4c369fb8bdd6a1f807fb91d6c479

Download Submit
C:\Users\Admin\AppData\Local\Temp\vulrlohjhih.dv

Filesize
205KB

MD5
7b35b645b558809048445bdb8e8538c7

SHA1
283b96084d12b847eb5a3b71a41adf4834397b80

SHA256
1c113aa2cbe37143f2c22284a25d09692a89cbd616e5d2961e2c76fd7ac0ef35

SHA512
7b457d35178b257d44f70119dce880ddd8e34d16da1c057faa0f98887f53093f578ea32a433b9bb332783964244b8ccd78bcc9a461d06a689b2d0077d330f29e

Download Submit
memory/3100-160-0x0000000008220000-0x00000000082B7000-memory.dmp

Filesize
604KB

Download
memory/3100-158-0x0000000008220000-0x00000000082B7000-memory.dmp

Filesize
604KB

Download
memory/3100-157-0x0000000008220000-0x00000000082B7000-memory.dmp

Filesize
604KB

Download
memory/3100-147-0x0000000002D90000-0x0000000002E76000-memory.dmp

Filesize
920KB

Download
memory/4392-152-0x0000000000610000-0x000000000063F000-memory.dmp

Filesize
188KB

Download
memory/4392-151-0x0000000000E00000-0x0000000000E0B000-memory.dmp

Filesize
44KB

Download
memory/4392-149-0x0000000000E00000-0x0000000000E0B000-memory.dmp

Filesize
44KB

Download
memory/4392-153-0x0000000000E10000-0x000000000115A000-memory.dmp

Filesize
3.3MB

Download
memory/4392-154-0x0000000000610000-0x000000000063F000-memory.dmp

Filesize
188KB

Download
memory/4392-156-0x0000000000C30000-0x0000000000CC3000-memory.dmp

Filesize
588KB

Download
memory/4500-148-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4500-146-0x00000000005F0000-0x0000000000604000-memory.dmp

Filesize
80KB

Download
memory/4500-145-0x0000000000A50000-0x0000000000D9A000-memory.dmp

Filesize
3.3MB

Download
memory/4500-141-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download