formbook | b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2025 14:10

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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
behavioral2/memory/4560-42-0x0000000000400000-0x000000000042F000-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
1184	powershell.exe
3872	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5048 set thread context of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.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
4412	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1184	powershell.exe
3872	powershell.exe
5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
4560	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
4560	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
1184	powershell.exe
3872	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1184	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	89
PID 5048 wrote to memory of 1184	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	89
PID 5048 wrote to memory of 1184	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	89
PID 5048 wrote to memory of 3872	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	91
PID 5048 wrote to memory of 3872	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	91
PID 5048 wrote to memory of 3872	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	91
PID 5048 wrote to memory of 4412	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	93
PID 5048 wrote to memory of 4412	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	93
PID 5048 wrote to memory of 4412	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	93
PID 5048 wrote to memory of 3532	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	95
PID 5048 wrote to memory of 3532	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	95
PID 5048 wrote to memory of 3532	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	95
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96
PID 5048 wrote to memory of 4560	5048	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	96

C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
"C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5048
- 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:1184
- 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:3872
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\STGxJbGQmSyNc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5E9.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4412
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  PID:3532
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4560

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

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\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
022e990fc82326bb70dfb68a80227436

SHA1
256242a8c23156476b0809a29e85903d01d02775

SHA256
8c2f7fc3576632703a84c46908da0c177ff2e74bc6c58d4c70ceb3fa822c237d

SHA512
2c29a3d38499f1b583ee6a24bf9ea9890dc4ddcb84487c93eaeb25ac6f2bbda1d44d68ade49004a169a0ec6ebd4e6cf50a99dc6b0e1420f6ae4dd43e09b73c05

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w5dj5pzp.uyx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF5E9.tmp

Filesize
1KB

MD5
6a0c1fab76b8a388e79b0261424379d0

SHA1
959243b16c9c58b6938b33743efeee4fe1010b25

SHA256
baed18abcb1b2b97bd5613e2cd03a7a27ecb7384d95859f3bb6d161d62542a60

SHA512
934474b17b598bd89e3acbebbc144d91a0895de442608e26063ad57965a42e61151370033e6c333f50857531b9a1682b517508f89ddbdfbcdfc2b083c2cecf29

Download Submit
memory/1184-51-0x0000000006E10000-0x0000000006E42000-memory.dmp

Filesize
200KB

Download
memory/1184-74-0x0000000007800000-0x0000000007E7A000-memory.dmp

Filesize
6.5MB

Download
memory/1184-89-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1184-82-0x00000000074D0000-0x00000000074D8000-memory.dmp

Filesize
32KB

Download
memory/1184-78-0x00000000073B0000-0x00000000073C1000-memory.dmp

Filesize
68KB

Download
memory/1184-76-0x0000000007230000-0x000000000723A000-memory.dmp

Filesize
40KB

Download
memory/1184-75-0x00000000071B0000-0x00000000071CA000-memory.dmp

Filesize
104KB

Download
memory/1184-17-0x00000000050B0000-0x00000000056D8000-memory.dmp

Filesize
6.2MB

Download
memory/1184-16-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1184-15-0x00000000048F0000-0x0000000004926000-memory.dmp

Filesize
216KB

Download
memory/1184-18-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1184-19-0x0000000004EE0000-0x0000000004F02000-memory.dmp

Filesize
136KB

Download
memory/1184-21-0x0000000005750000-0x00000000057B6000-memory.dmp

Filesize
408KB

Download
memory/1184-20-0x0000000005000000-0x0000000005066000-memory.dmp

Filesize
408KB

Download
memory/1184-23-0x00000000058C0000-0x0000000005C14000-memory.dmp

Filesize
3.3MB

Download
memory/1184-52-0x0000000075580000-0x00000000755CC000-memory.dmp

Filesize
304KB

Download
memory/1184-63-0x0000000006DF0000-0x0000000006E0E000-memory.dmp

Filesize
120KB

Download
memory/1184-73-0x0000000007060000-0x0000000007103000-memory.dmp

Filesize
652KB

Download
memory/1184-22-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3872-81-0x00000000070E0000-0x00000000070FA000-memory.dmp

Filesize
104KB

Download
memory/3872-79-0x0000000006FD0000-0x0000000006FDE000-memory.dmp

Filesize
56KB

Download
memory/3872-36-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3872-80-0x0000000006FE0000-0x0000000006FF4000-memory.dmp

Filesize
80KB

Download
memory/3872-49-0x0000000005980000-0x000000000599E000-memory.dmp

Filesize
120KB

Download
memory/3872-50-0x0000000005B20000-0x0000000005B6C000-memory.dmp

Filesize
304KB

Download
memory/3872-34-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3872-24-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3872-62-0x0000000075580000-0x00000000755CC000-memory.dmp

Filesize
304KB

Download
memory/3872-77-0x0000000007020000-0x00000000070B6000-memory.dmp

Filesize
600KB

Download
memory/3872-88-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/4560-42-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5048-10-0x0000000006840000-0x00000000068B8000-memory.dmp

Filesize
480KB

Download
memory/5048-5-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/5048-9-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/5048-8-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

Filesize
4KB

Download
memory/5048-1-0x0000000000670000-0x0000000000716000-memory.dmp

Filesize
664KB

Download
memory/5048-4-0x00000000051C0000-0x00000000051CA000-memory.dmp

Filesize
40KB

Download
memory/5048-6-0x00000000053E0000-0x000000000547C000-memory.dmp

Filesize
624KB

Download
memory/5048-48-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/5048-7-0x00000000055C0000-0x00000000055D8000-memory.dmp

Filesize
96KB

Download
memory/5048-2-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download
memory/5048-3-0x0000000005100000-0x0000000005192000-memory.dmp

Filesize
584KB

Download
memory/5048-0-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

Filesize
4KB

Download