formbook | e6e88a66deba0d9ed4021c491814969707034b0d459bb3144870d98b083131ba

Analysis

max time kernel
296s
max time network
283s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 00:56

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General

Target

rlxJk85y4E3Cu8R.exe
Size

797KB
MD5

4be5e463d0add883315a162191a36a4d
SHA1

2a23189d3da383aa49c07ca7e05bb943813662a1
SHA256

812d0912e299dbe0eff0078fcced87ffe5762b103a974dd19cdbb4c21294a193
SHA512

415a570ea23d12ca8d5f1d597f8373ffc4e57d05145c2a0666519a8b53852c2bd62895a7569abb2aeb8b5109434afe056129aa48124d0b10e147eab5a0c07435
SSDEEP

12288:DuEcsm04vbBoaGoE80Dir+hOsh79T3C8yG3ZAmwIDH2yZPZ6b1ID:1ct04+sE8wir+0s0wZ7D61ID

Score

10^/10

formbook sx01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sx01

Decoy

r-salessolutions.xyz

jdh1.info

olar-panel-jobs-93084.bond

aebrasil.shop

oshua-xaaaa.buzz

xzkm.shop

nitedviplumbing.net

nnevateknoloji.xyz

rg-a.biz

indow-replacement-34091.bond

uyersagent3percent.net

ostbag.net

ibosolv.net

ahve.today

ophotshotjobs.today

emoreez.art

ift-chairs-94905.bond

okerdom-e.best

stagr.fun

irtyf-ingrancher.info

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/3244-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3244-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/872-64-0x0000000000830000-0x000000000085F000-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
1936	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	rlxJk85y4E3Cu8R.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2472 set thread context of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 3244 set thread context of 3492	3244	rlxJk85y4E3Cu8R.exe	56
PID 872 set thread context of 3492	872	rundll32.exe	56

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 4 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	rlxJk85y4E3Cu8R.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
1936	powershell.exe
1936	powershell.exe
1936	powershell.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe
872	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
3244	rlxJk85y4E3Cu8R.exe
872	rundll32.exe
872	rundll32.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3244	rlxJk85y4E3Cu8R.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	872	rundll32.exe
Token: SeShutdownPrivilege	3492	Explorer.EXE
Token: SeCreatePagefilePrivilege	3492	Explorer.EXE
Token: SeShutdownPrivilege	3492	Explorer.EXE
Token: SeCreatePagefilePrivilege	3492	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 1936	2472	rlxJk85y4E3Cu8R.exe	95
PID 2472 wrote to memory of 1936	2472	rlxJk85y4E3Cu8R.exe	95
PID 2472 wrote to memory of 1936	2472	rlxJk85y4E3Cu8R.exe	95
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 2472 wrote to memory of 3244	2472	rlxJk85y4E3Cu8R.exe	97
PID 3492 wrote to memory of 872	3492	Explorer.EXE	99
PID 3492 wrote to memory of 872	3492	Explorer.EXE	99
PID 3492 wrote to memory of 872	3492	Explorer.EXE	99
PID 872 wrote to memory of 2316	872	rundll32.exe	101
PID 872 wrote to memory of 2316	872	rundll32.exe	101
PID 872 wrote to memory of 2316	872	rundll32.exe	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Users\Admin\AppData\Local\Temp\rlxJk85y4E3Cu8R.exe
  "C:\Users\Admin\AppData\Local\Temp\rlxJk85y4E3Cu8R.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2472
- - 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\rlxJk85y4E3Cu8R.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1936
- - C:\Users\Admin\AppData\Local\Temp\rlxJk85y4E3Cu8R.exe
    "C:\Users\Admin\AppData\Local\Temp\rlxJk85y4E3Cu8R.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3244
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:872
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\rlxJk85y4E3Cu8R.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2316

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4236,i,10369132178352108590,11047993562598554317,262144 --variations-seed-version --mojo-platform-channel-handle=1296 /prefetch:8
1⤵
PID:1632

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rtw1mdfg.zct.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/872-64-0x0000000000830000-0x000000000085F000-memory.dmp

Filesize
188KB

Download
memory/872-41-0x0000000000ED0000-0x0000000000EE4000-memory.dmp

Filesize
80KB

Download
memory/872-39-0x0000000000ED0000-0x0000000000EE4000-memory.dmp

Filesize
80KB

Download
memory/1936-56-0x0000000007750000-0x000000000776A000-memory.dmp

Filesize
104KB

Download
memory/1936-20-0x0000000004E80000-0x0000000004EB6000-memory.dmp

Filesize
216KB

Download
memory/1936-67-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download
memory/1936-35-0x0000000005DC0000-0x0000000006114000-memory.dmp

Filesize
3.3MB

Download
memory/1936-63-0x0000000007A70000-0x0000000007A78000-memory.dmp

Filesize
32KB

Download
memory/1936-62-0x0000000007A90000-0x0000000007AAA000-memory.dmp

Filesize
104KB

Download
memory/1936-61-0x0000000007990000-0x00000000079A4000-memory.dmp

Filesize
80KB

Download
memory/1936-60-0x0000000007980000-0x000000000798E000-memory.dmp

Filesize
56KB

Download
memory/1936-59-0x0000000007950000-0x0000000007961000-memory.dmp

Filesize
68KB

Download
memory/1936-58-0x00000000079D0000-0x0000000007A66000-memory.dmp

Filesize
600KB

Download
memory/1936-25-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download
memory/1936-57-0x00000000077C0000-0x00000000077CA000-memory.dmp

Filesize
40KB

Download
memory/1936-36-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download
memory/1936-43-0x00000000707D0000-0x000000007081C000-memory.dmp

Filesize
304KB

Download
memory/1936-19-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/1936-21-0x0000000005550000-0x0000000005B78000-memory.dmp

Filesize
6.2MB

Download
memory/1936-22-0x0000000005340000-0x0000000005362000-memory.dmp

Filesize
136KB

Download
memory/1936-24-0x0000000005C80000-0x0000000005CE6000-memory.dmp

Filesize
408KB

Download
memory/1936-23-0x00000000054E0000-0x0000000005546000-memory.dmp

Filesize
408KB

Download
memory/1936-55-0x0000000007D90000-0x000000000840A000-memory.dmp

Filesize
6.5MB

Download
memory/1936-42-0x00000000073E0000-0x0000000007412000-memory.dmp

Filesize
200KB

Download
memory/1936-53-0x0000000006A00000-0x0000000006A1E000-memory.dmp

Filesize
120KB

Download
memory/1936-54-0x0000000007620000-0x00000000076C3000-memory.dmp

Filesize
652KB

Download
memory/1936-37-0x0000000006400000-0x000000000641E000-memory.dmp

Filesize
120KB

Download
memory/1936-38-0x0000000006450000-0x000000000649C000-memory.dmp

Filesize
304KB

Download
memory/2472-7-0x000000007493E000-0x000000007493F000-memory.dmp

Filesize
4KB

Download
memory/2472-9-0x0000000008260000-0x00000000082D6000-memory.dmp

Filesize
472KB

Download
memory/2472-3-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/2472-6-0x0000000007FC0000-0x0000000007FD0000-memory.dmp

Filesize
64KB

Download
memory/2472-5-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-1-0x00000000007F0000-0x00000000008BE000-memory.dmp

Filesize
824KB

Download
memory/2472-4-0x0000000005480000-0x000000000548A000-memory.dmp

Filesize
40KB

Download
memory/2472-0-0x000000007493E000-0x000000007493F000-memory.dmp

Filesize
4KB

Download
memory/2472-8-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-14-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/2472-10-0x000000000AA60000-0x000000000AAFC000-memory.dmp

Filesize
624KB

Download
memory/3244-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3244-13-0x0000000001180000-0x00000000014CA000-memory.dmp

Filesize
3.3MB

Download
memory/3244-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/3244-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3492-18-0x0000000008F90000-0x000000000910B000-memory.dmp

Filesize
1.5MB

Download
memory/3492-68-0x0000000008F90000-0x000000000910B000-memory.dmp

Filesize
1.5MB

Download
memory/3492-73-0x0000000009110000-0x0000000009238000-memory.dmp

Filesize
1.2MB

Download