formbook | b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 04:53

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General

Target

b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
Size

638KB
MD5

89b0f3adc6ab1db516dfb6b88b391889
SHA1

8dfb225e396966f5ef1cec4e86e24f063ef2cb8b
SHA256

b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd
SHA512

d6be55a82e568c5f20b33b205f5e38991d6094fc8b77e27fdfb9df5137b8c3408b8c09d880e2072dabdf537934122839cb85345cb4d53a464aaa67f7275080c9
SSDEEP

12288:oTzatXXkfTlVKJrfkgZyW2gZkg326y5usx+Xt:oTzatXXkfTlV6MgMgdyx

Score

10^/10

formbook bs84 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bs84

Decoy

ehuatang.quest

mart-healthcare.solutions

arehouse-inventory-59593.bond

rumpjokes.net

oonlightshadow.store

odernoob.website

sdmedia.net

0k21l6z.xyz

kwovenart.shop

chvb.bid

06ks28.buzz

grexvc.online

unnycdn02.shop

ettingitgonejunk.net

lubmango.store

ustjump.xyz

ofiveuss.store

aahasti-inter5.rest

etclcg.business

ai365.xyz

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2636-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
568	powershell.exe
2760	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39

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	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2848	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
2760	powershell.exe
568	powershell.exe
2636	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	568	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 568	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	31
PID 2424 wrote to memory of 568	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	31
PID 2424 wrote to memory of 568	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	31
PID 2424 wrote to memory of 568	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	31
PID 2424 wrote to memory of 2760	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	33
PID 2424 wrote to memory of 2760	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	33
PID 2424 wrote to memory of 2760	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	33
PID 2424 wrote to memory of 2760	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	33
PID 2424 wrote to memory of 2848	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	35
PID 2424 wrote to memory of 2848	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	35
PID 2424 wrote to memory of 2848	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	35
PID 2424 wrote to memory of 2848	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	35
PID 2424 wrote to memory of 2952	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	37
PID 2424 wrote to memory of 2952	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	37
PID 2424 wrote to memory of 2952	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	37
PID 2424 wrote to memory of 2952	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	37
PID 2424 wrote to memory of 2980	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	38
PID 2424 wrote to memory of 2980	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	38
PID 2424 wrote to memory of 2980	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	38
PID 2424 wrote to memory of 2980	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	38
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39
PID 2424 wrote to memory of 2636	2424	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	39

C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
"C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424
- 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\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:568
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\STGxJbGQmSyNc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\STGxJbGQmSyNc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp142C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2848
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  PID:2952
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  PID:2980
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

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\tmp142C.tmp

Filesize
1KB

MD5
3b983525551439b9b14c4c7423992b8e

SHA1
9ea450b02b3ac1a90e4e3be9602297d709274ce2

SHA256
6a8e2da9097fd88d131726cc0e6547273b9eb9fdee0e925c45e563441cceb78c

SHA512
a6912493dd5b084b0a9482619b1191fc92d3d0b5c767b4d73035e0bf5295dfb442354b521b7d06a28101342f6c377f323eb291be8b6702a5c2ba38996535faab

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
ddf3875f4806818c023bbe7d16a469b3

SHA1
0187d3967fdce959751a575d9e653dbbf43d5fe6

SHA256
b47cccd1a50331e5a51f6c67ebb6bd7334672ea4ebb0281eca40f8ac2c864559

SHA512
b16eaa57c5e547b28764ccb03e9ede57d591a8efd44dbd98e7355ddc04ee3452b0d7bcf1cfe2bfd46cbb103f4d5a091548d3416fedd95ca47713400670424fc9

Download Submit
memory/2424-6-0x0000000004F70000-0x0000000004FE8000-memory.dmp

Filesize
480KB

Download
memory/2424-3-0x0000000000580000-0x0000000000598000-memory.dmp

Filesize
96KB

Download
memory/2424-4-0x0000000073FAE000-0x0000000073FAF000-memory.dmp

Filesize
4KB

Download
memory/2424-5-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2424-0-0x0000000073FAE000-0x0000000073FAF000-memory.dmp

Filesize
4KB

Download
memory/2424-2-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2424-1-0x0000000000160000-0x0000000000206000-memory.dmp

Filesize
664KB

Download
memory/2424-25-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2636-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2636-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2636-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download