formbook | dc5979d64d9ea41f929d14f4ca02dd29f5dac9c77b3e5584ad076d2f87b82704

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
23/07/2024, 13:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Doc 07232412.exe
Size

637KB
MD5

d44cbc7808ef4ca0e9007ed7812ac54c
SHA1

3562886c50d64e72079e0bad936c065027acb6f1
SHA256

eb9de075c6c5ac3dae5ec163fe9d8abeccf9edc3bdeed05364dcacf64c9550d2
SHA512

6c256b5c66177a5dee6bc769c8fa782834feefdc584beeb503f89e0cedbc23a88dd98976774f0839765efeb137b1a87ffb71ff36659e560777f33601340816f4
SSDEEP

12288:WdwwoIc0QIH2j0ocLX6NBxa3+SYOhAbp8FCTzcDxuN+wsv5/s2cxkOxW/t+BA:WywoIc0QIH2EiBcPQTTzIuN+vv5ixW/e

Score

10^/10

formbook by21 execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

by21

Decoy

digitalillusions.net

changeblue25.com

kitchenwoow.com

grupocontigoalimentacion.com

iranabr.com

embodiedmagic.com

superstoreszone.com

apartments-for-rent-46883.bond

kelbagnole.com

rideskratchlab.com

a06kng.club

saddlebredallstars.xyz

filepd.com

kxetdf.asia

dl39yy.com

jackedsearch.com

exodusprofessionaldetailing.com

ecommerce-40144.bond

uh3b94g3pyczi9t.skin

dcmcc635i.xyz

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1680-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1680-30-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2360-69-0x0000000000C10000-0x0000000000C3F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4156	powershell.exe

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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	Doc 07232412.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4468 set thread context of 1680	4468	Doc 07232412.exe	96
PID 1680 set thread context of 3536	1680	Doc 07232412.exe	56
PID 2360 set thread context of 3536	2360	raserver.exe	56

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1680	Doc 07232412.exe
1680	Doc 07232412.exe
1680	Doc 07232412.exe
1680	Doc 07232412.exe
4156	powershell.exe
4156	powershell.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe
2360	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1680	Doc 07232412.exe
1680	Doc 07232412.exe
1680	Doc 07232412.exe
2360	raserver.exe
2360	raserver.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	Doc 07232412.exe
Token: SeDebugPrivilege	4156	powershell.exe
Token: SeDebugPrivilege	2360	raserver.exe
Token: SeShutdownPrivilege	3536	Explorer.EXE
Token: SeCreatePagefilePrivilege	3536	Explorer.EXE
Token: SeShutdownPrivilege	3536	Explorer.EXE
Token: SeCreatePagefilePrivilege	3536	Explorer.EXE
Token: SeShutdownPrivilege	3536	Explorer.EXE
Token: SeCreatePagefilePrivilege	3536	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3536	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 4156	4468	Doc 07232412.exe	94
PID 4468 wrote to memory of 4156	4468	Doc 07232412.exe	94
PID 4468 wrote to memory of 4156	4468	Doc 07232412.exe	94
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 4468 wrote to memory of 1680	4468	Doc 07232412.exe	96
PID 3536 wrote to memory of 2360	3536	Explorer.EXE	97
PID 3536 wrote to memory of 2360	3536	Explorer.EXE	97
PID 3536 wrote to memory of 2360	3536	Explorer.EXE	97
PID 2360 wrote to memory of 2800	2360	raserver.exe	98
PID 2360 wrote to memory of 2800	2360	raserver.exe	98
PID 2360 wrote to memory of 2800	2360	raserver.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe
  "C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4156
- - C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1680
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Doc 07232412.exe"
    3⤵
    PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r5qdvcuz.4k2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1680-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1680-30-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1680-31-0x00000000018F0000-0x0000000001904000-memory.dmp

Filesize
80KB

Download
memory/1680-14-0x0000000001980000-0x0000000001CCA000-memory.dmp

Filesize
3.3MB

Download
memory/2360-69-0x0000000000C10000-0x0000000000C3F000-memory.dmp

Filesize
188KB

Download
memory/2360-61-0x00000000007C0000-0x00000000007DF000-memory.dmp

Filesize
124KB

Download
memory/2360-59-0x00000000007C0000-0x00000000007DF000-memory.dmp

Filesize
124KB

Download
memory/3536-72-0x00000000077E0000-0x000000000789D000-memory.dmp

Filesize
756KB

Download
memory/3536-32-0x0000000008F50000-0x000000000908B000-memory.dmp

Filesize
1.2MB

Download
memory/4156-54-0x0000000007B70000-0x00000000081EA000-memory.dmp

Filesize
6.5MB

Download
memory/4156-51-0x0000000006830000-0x000000000684E000-memory.dmp

Filesize
120KB

Download
memory/4156-68-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4156-15-0x000000007538E000-0x000000007538F000-memory.dmp

Filesize
4KB

Download
memory/4156-16-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4156-17-0x0000000002950000-0x0000000002986000-memory.dmp

Filesize
216KB

Download
memory/4156-19-0x0000000005350000-0x0000000005978000-memory.dmp

Filesize
6.2MB

Download
memory/4156-65-0x0000000007850000-0x0000000007858000-memory.dmp

Filesize
32KB

Download
memory/4156-20-0x0000000005240000-0x0000000005262000-memory.dmp

Filesize
136KB

Download
memory/4156-22-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Filesize
408KB

Download
memory/4156-21-0x00000000052E0000-0x0000000005346000-memory.dmp

Filesize
408KB

Download
memory/4156-64-0x0000000007870000-0x000000000788A000-memory.dmp

Filesize
104KB

Download
memory/4156-25-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4156-63-0x0000000007770000-0x0000000007784000-memory.dmp

Filesize
80KB

Download
memory/4156-62-0x0000000007760000-0x000000000776E000-memory.dmp

Filesize
56KB

Download
memory/4156-36-0x0000000005C20000-0x0000000005F74000-memory.dmp

Filesize
3.3MB

Download
memory/4156-58-0x0000000007730000-0x0000000007741000-memory.dmp

Filesize
68KB

Download
memory/4156-37-0x0000000006200000-0x000000000621E000-memory.dmp

Filesize
120KB

Download
memory/4156-38-0x00000000063F0000-0x000000000643C000-memory.dmp

Filesize
304KB

Download
memory/4156-57-0x00000000077B0000-0x0000000007846000-memory.dmp

Filesize
600KB

Download
memory/4156-41-0x000000007FCB0000-0x000000007FCC0000-memory.dmp

Filesize
64KB

Download
memory/4156-52-0x0000000007400000-0x00000000074A3000-memory.dmp

Filesize
652KB

Download
memory/4156-40-0x00000000711A0000-0x00000000711EC000-memory.dmp

Filesize
304KB

Download
memory/4156-53-0x0000000002900000-0x0000000002910000-memory.dmp

Filesize
64KB

Download
memory/4156-39-0x00000000067F0000-0x0000000006822000-memory.dmp

Filesize
200KB

Download
memory/4156-55-0x0000000007530000-0x000000000754A000-memory.dmp

Filesize
104KB

Download
memory/4156-56-0x00000000075A0000-0x00000000075AA000-memory.dmp

Filesize
40KB

Download
memory/4468-0-0x000000007530E000-0x000000007530F000-memory.dmp

Filesize
4KB

Download
memory/4468-10-0x0000000008C60000-0x0000000008CFC000-memory.dmp

Filesize
624KB

Download
memory/4468-5-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-4-0x0000000004F20000-0x0000000004F2A000-memory.dmp

Filesize
40KB

Download
memory/4468-3-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/4468-6-0x0000000005640000-0x0000000005654000-memory.dmp

Filesize
80KB

Download
memory/4468-7-0x0000000006110000-0x000000000611A000-memory.dmp

Filesize
40KB

Download
memory/4468-8-0x0000000006120000-0x000000000612E000-memory.dmp

Filesize
56KB

Download
memory/4468-9-0x0000000006150000-0x00000000061C6000-memory.dmp

Filesize
472KB

Download
memory/4468-13-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-2-0x0000000005650000-0x0000000005BF4000-memory.dmp

Filesize
5.6MB

Download
memory/4468-1-0x0000000000480000-0x0000000000526000-memory.dmp

Filesize
664KB

Download