formbook | 39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4

Analysis

max time kernel
148s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2024 01:12

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General

Target

39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe
Size

2.0MB
MD5

0ff53c4fcc6b65dea0d1883564e08808
SHA1

0d7ef9122a9bca045607f8397c476a24fc2c0553
SHA256

39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4
SHA512

fb47e6cb7a4686fe03c297881aa699a892785c0a8a1e19128d19215ae4e7df26e795c0fdcc12b9cf45b6ffcdb9def11be13eb1097bf04d20062aa6a1ff073dd8
SSDEEP

49152:ufDe+fmH7RRZ1UW84VCyH+4FAGqnx+lg3jszv8u1mlSCg3:ufDQQsKbq

Score

10^/10

formbook gy15 discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gy15

Decoy

hairsdeals.today

acob-saaad.buzz

9955.club

gild6222.vip

nline-shopping-56055.bond

lmadulles.top

utemodels.info

ighdd4675.online

nqqkk146.xyz

avasales.online

ortas-de-madeira.today

haad.xyz

races-dental-splints-15439.bond

hilohcreekpemf.online

rrivalgetaways.info

orktoday-2507-02-sap.click

eceriyayinlari.xyz

lsurfer.click

aston-saaae.buzz

etrot.pro

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/3604-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3604-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4400-25-0x00000000004F0000-0x000000000051F000-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
2156	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	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4 = "C:\\Users\\Admin\\39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe"	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3436 set thread context of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3604 set thread context of 3380	3604	csc.exe	56
PID 4400 set thread context of 3380	4400	cmstp.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 2 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	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2156	powershell.exe
2156	powershell.exe
3604	csc.exe
3604	csc.exe
3604	csc.exe
3604	csc.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe
4400	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3604	csc.exe
3604	csc.exe
3604	csc.exe
4400	cmstp.exe
4400	cmstp.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe
Token: SeDebugPrivilege	2156	powershell.exe
Token: SeDebugPrivilege	3604	csc.exe
Token: SeDebugPrivilege	4400	cmstp.exe
Token: SeShutdownPrivilege	3380	Explorer.EXE
Token: SeCreatePagefilePrivilege	3380	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3380	Explorer.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 2156	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	91
PID 3436 wrote to memory of 2156	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	91
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3436 wrote to memory of 3604	3436	39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe	93
PID 3380 wrote to memory of 4400	3380	Explorer.EXE	95
PID 3380 wrote to memory of 4400	3380	Explorer.EXE	95
PID 3380 wrote to memory of 4400	3380	Explorer.EXE	95
PID 4400 wrote to memory of 4676	4400	cmstp.exe	98
PID 4400 wrote to memory of 4676	4400	cmstp.exe	98
PID 4400 wrote to memory of 4676	4400	cmstp.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Users\Admin\AppData\Local\Temp\39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe
  "C:\Users\Admin\AppData\Local\Temp\39310b37cd28d9a559c63637c4f5e9649cdaef2ccae1269193e141ed50023ae4.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3436
- - C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath $env:UserProfile
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2156
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3604
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:4400
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4676

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=4400,i,6510295916244954942,10164894160290787457,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
1⤵
PID:4760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hgwogta1.3hh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2156-17-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2156-1-0x00000163E39C0000-0x00000163E39E2000-memory.dmp

Filesize
136KB

Download
memory/2156-11-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2156-12-0x00007FF9CDF80000-0x00007FF9CEA41000-memory.dmp

Filesize
10.8MB

Download
memory/2156-0-0x00007FF9CDF83000-0x00007FF9CDF85000-memory.dmp

Filesize
8KB

Download
memory/3380-29-0x00000000085D0000-0x0000000008747000-memory.dmp

Filesize
1.5MB

Download
memory/3380-22-0x000000000A750000-0x000000000A8E2000-memory.dmp

Filesize
1.6MB

Download
memory/3604-21-0x00000000019D0000-0x00000000019E4000-memory.dmp

Filesize
80KB

Download
memory/3604-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3604-18-0x0000000001A10000-0x0000000001D5A000-memory.dmp

Filesize
3.3MB

Download
memory/3604-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4400-23-0x0000000000DD0000-0x0000000000DE6000-memory.dmp

Filesize
88KB

Download
memory/4400-24-0x0000000000DD0000-0x0000000000DE6000-memory.dmp

Filesize
88KB

Download
memory/4400-25-0x00000000004F0000-0x000000000051F000-memory.dmp

Filesize
188KB

Download