formbook | 938db96ba8d7805216d1159da38fab4bdd45cf95c33190962ab3337e7ad6ccec

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 01:33

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General

Target

Bank Details.pdf.exe
Size

649KB
MD5

70f1ab254a32c6050743605d6f3384d5
SHA1

526c5e0280cb55ef308312db603e94af4fee0b42
SHA256

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e
SHA512

120d687da81b7fede4954e181bba535b279e81542ed779af0f41f6fda58596b25d1162a950e2633b45d6c9f0034ba91606873a87dc9530aa5fad1d5c2a5bbe8c
SSDEEP

12288:3f7mvgKnFHMF9XuroT07oUdMIEoKrom2Az3HCqC48wypy/LfcfhtYiQGMXJEGYc:zmvL9MDXurIMMIEHvzrC489ybcfvxQGs

Score

10^/10

formbook fs83 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fs83

Decoy

blastol.space

tomwalkerisfalco.com

us-sumatrraslimbellytonic.com

drywallandpaintingservice.com

vntapp.net

passportpages.site

at-mim.com

yeondagoods.com

teomanyildirim.com

paygame.site

senze.art

alhandco.com

9831bsej.xyz

traumatic.xyz

sos-soutien.com

thetechnolgy.live

washing-machine-46612.bond

marvsneakers.com

shequbaike.net

xc4f35fg4h35fg4h53.top

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral2/memory/3512-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3512-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3512-69-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3980-75-0x0000000001020000-0x000000000104F000-memory.dmp	formbook
behavioral2/memory/3980-77-0x0000000001020000-0x000000000104F000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	Bank Details.pdf.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 3512	2732	Bank Details.pdf.exe	102
PID 3512 set thread context of 3396	3512	RegSvcs.exe	56
PID 3512 set thread context of 3396	3512	RegSvcs.exe	56
PID 3980 set thread context of 3396	3980	raserver.exe	56

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
1872	powershell.exe
1872	powershell.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe
3980	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3980	raserver.exe
3980	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3512	RegSvcs.exe
Token: SeDebugPrivilege	1872	powershell.exe
Token: SeShutdownPrivilege	3396	Explorer.EXE
Token: SeCreatePagefilePrivilege	3396	Explorer.EXE
Token: SeDebugPrivilege	3980	raserver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3396	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 1872	2732	Bank Details.pdf.exe	100
PID 2732 wrote to memory of 1872	2732	Bank Details.pdf.exe	100
PID 2732 wrote to memory of 1872	2732	Bank Details.pdf.exe	100
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 2732 wrote to memory of 3512	2732	Bank Details.pdf.exe	102
PID 3512 wrote to memory of 3980	3512	RegSvcs.exe	105
PID 3512 wrote to memory of 3980	3512	RegSvcs.exe	105
PID 3512 wrote to memory of 3980	3512	RegSvcs.exe	105
PID 3980 wrote to memory of 3812	3980	raserver.exe	106
PID 3980 wrote to memory of 3812	3980	raserver.exe	106
PID 3980 wrote to memory of 3812	3980	raserver.exe	106

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3396
- C:\Users\Admin\AppData\Local\Temp\Bank Details.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Bank Details.pdf.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2732
- - 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\Bank Details.pdf.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1872
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3512
  - - C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3980
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        5⤵
        
        PID:3812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kjlsovwq.rcf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1872-42-0x0000000070930000-0x000000007097C000-memory.dmp

Filesize
304KB

Download
memory/1872-63-0x00000000072B0000-0x00000000072CA000-memory.dmp

Filesize
104KB

Download
memory/1872-67-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1872-64-0x0000000007290000-0x0000000007298000-memory.dmp

Filesize
32KB

Download
memory/1872-54-0x0000000004730000-0x0000000004740000-memory.dmp

Filesize
64KB

Download
memory/1872-62-0x00000000071B0000-0x00000000071C4000-memory.dmp

Filesize
80KB

Download
memory/1872-61-0x00000000071A0000-0x00000000071AE000-memory.dmp

Filesize
56KB

Download
memory/1872-59-0x00000000071F0000-0x0000000007286000-memory.dmp

Filesize
600KB

Download
memory/1872-58-0x0000000006FE0000-0x0000000006FEA000-memory.dmp

Filesize
40KB

Download
memory/1872-56-0x00000000075B0000-0x0000000007C2A000-memory.dmp

Filesize
6.5MB

Download
memory/1872-57-0x0000000006F70000-0x0000000006F8A000-memory.dmp

Filesize
104KB

Download
memory/1872-40-0x000000007F700000-0x000000007F710000-memory.dmp

Filesize
64KB

Download
memory/1872-41-0x0000000006210000-0x0000000006242000-memory.dmp

Filesize
200KB

Download
memory/1872-55-0x0000000006E60000-0x0000000006F03000-memory.dmp

Filesize
652KB

Download
memory/1872-17-0x0000000004620000-0x0000000004656000-memory.dmp

Filesize
216KB

Download
memory/1872-18-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1872-20-0x0000000004D70000-0x0000000005398000-memory.dmp

Filesize
6.2MB

Download
memory/1872-52-0x0000000006250000-0x000000000626E000-memory.dmp

Filesize
120KB

Download
memory/1872-53-0x0000000004730000-0x0000000004740000-memory.dmp

Filesize
64KB

Download
memory/1872-22-0x0000000004B00000-0x0000000004B22000-memory.dmp

Filesize
136KB

Download
memory/1872-23-0x0000000004730000-0x0000000004740000-memory.dmp

Filesize
64KB

Download
memory/1872-39-0x0000000005C80000-0x0000000005CCC000-memory.dmp

Filesize
304KB

Download
memory/1872-25-0x0000000004730000-0x0000000004740000-memory.dmp

Filesize
64KB

Download
memory/1872-26-0x0000000005510000-0x0000000005576000-memory.dmp

Filesize
408KB

Download
memory/1872-32-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/1872-60-0x0000000007170000-0x0000000007181000-memory.dmp

Filesize
68KB

Download
memory/1872-37-0x0000000005730000-0x0000000005A84000-memory.dmp

Filesize
3.3MB

Download
memory/1872-38-0x0000000005C40000-0x0000000005C5E000-memory.dmp

Filesize
120KB

Download
memory/2732-4-0x0000000005250000-0x0000000005260000-memory.dmp

Filesize
64KB

Download
memory/2732-6-0x0000000007A40000-0x0000000007AD0000-memory.dmp

Filesize
576KB

Download
memory/2732-3-0x0000000005040000-0x00000000050D2000-memory.dmp

Filesize
584KB

Download
memory/2732-7-0x0000000005360000-0x0000000005378000-memory.dmp

Filesize
96KB

Download
memory/2732-1-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2732-2-0x0000000005550000-0x0000000005AF4000-memory.dmp

Filesize
5.6MB

Download
memory/2732-14-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2732-5-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

Filesize
40KB

Download
memory/2732-11-0x000000000CEE0000-0x000000000CF7C000-memory.dmp

Filesize
624KB

Download
memory/2732-10-0x00000000049C0000-0x0000000004A36000-memory.dmp

Filesize
472KB

Download
memory/2732-9-0x00000000053B0000-0x00000000053C4000-memory.dmp

Filesize
80KB

Download
memory/2732-8-0x00000000053A0000-0x00000000053AE000-memory.dmp

Filesize
56KB

Download
memory/2732-0-0x00000000006B0000-0x0000000000758000-memory.dmp

Filesize
672KB

Download
memory/3396-80-0x00000000087D0000-0x0000000008882000-memory.dmp

Filesize
712KB

Download
memory/3396-86-0x00000000094F0000-0x00000000095EE000-memory.dmp

Filesize
1016KB

Download
memory/3396-24-0x00000000089B0000-0x0000000008A97000-memory.dmp

Filesize
924KB

Download
memory/3396-71-0x00000000087D0000-0x0000000008882000-memory.dmp

Filesize
712KB

Download
memory/3396-83-0x00000000094F0000-0x00000000095EE000-memory.dmp

Filesize
1016KB

Download
memory/3396-82-0x00000000094F0000-0x00000000095EE000-memory.dmp

Filesize
1016KB

Download
memory/3512-21-0x00000000013F0000-0x0000000001404000-memory.dmp

Filesize
80KB

Download
memory/3512-70-0x0000000003470000-0x0000000003484000-memory.dmp

Filesize
80KB

Download
memory/3512-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3512-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3512-15-0x00000000018A0000-0x0000000001BEA000-memory.dmp

Filesize
3.3MB

Download
memory/3512-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3980-74-0x0000000000600000-0x000000000061F000-memory.dmp

Filesize
124KB

Download
memory/3980-78-0x0000000002DB0000-0x0000000002E43000-memory.dmp

Filesize
588KB

Download
memory/3980-77-0x0000000001020000-0x000000000104F000-memory.dmp

Filesize
188KB

Download
memory/3980-76-0x0000000002F70000-0x00000000032BA000-memory.dmp

Filesize
3.3MB

Download
memory/3980-75-0x0000000001020000-0x000000000104F000-memory.dmp

Filesize
188KB

Download
memory/3980-72-0x0000000000600000-0x000000000061F000-memory.dmp

Filesize
124KB

Download