formbook | b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd

Analysis

max time kernel
94s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4040-37-0x0000000000400000-0x000000000042F000-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
760	powershell.exe
3440	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103

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
2656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
760	powershell.exe
3440	powershell.exe
760	powershell.exe
3440	powershell.exe
4040	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
4040	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3440	powershell.exe
Token: SeDebugPrivilege	760	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 3440	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	97
PID 2328 wrote to memory of 3440	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	97
PID 2328 wrote to memory of 3440	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	97
PID 2328 wrote to memory of 760	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	99
PID 2328 wrote to memory of 760	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	99
PID 2328 wrote to memory of 760	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	99
PID 2328 wrote to memory of 2656	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	101
PID 2328 wrote to memory of 2656	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	101
PID 2328 wrote to memory of 2656	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	101
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103
PID 2328 wrote to memory of 4040	2328	b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe	103

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 use of WriteProcessMemory
PID:2328
- 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:3440
- 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:760
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\STGxJbGQmSyNc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp172.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2656
- C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe
  "C:\Users\Admin\AppData\Local\Temp\b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4040

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
7144bf1b4aa1d878bd02fab21195635b

SHA1
740cc6b672dae31daadf997e09c3d73fdb175509

SHA256
89e3a9f13259855bd59711384ee001f0b89e1e87c3c76aa45b14e9729359b7f7

SHA512
95bdb59126c5b5fe5a39674fedc1ed9ec184f81379bd058de5ff4613c2712818a6d8b6608ad1c93eef755c1c247b662a581cfa54eee7de534d199fa2a1538ee5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qxbykoas.43b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp172.tmp

Filesize
1KB

MD5
b919ff864d3c88b58ae86f2f3c81a1a1

SHA1
35df56f7283088484b077395d25cccbff79870fe

SHA256
a3ab03595a196e1ad1e774c14a89706a6b30531965a131bd61ef713e68762d1b

SHA512
2467a9876888ef0fa1445d9c7bf253a3fef505e89c3372a2d28634ef8b5207bd302d0d9c9fd6dcb46ae6914b06feab3db8cce8bb2646504bb8247baee2953e52

Download Submit
memory/760-73-0x0000000007640000-0x00000000076E3000-memory.dmp

Filesize
652KB

Download
memory/760-82-0x0000000007AA0000-0x0000000007AA8000-memory.dmp

Filesize
32KB

Download
memory/760-52-0x0000000075B10000-0x0000000075B5C000-memory.dmp

Filesize
304KB

Download
memory/760-22-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/760-74-0x0000000007DD0000-0x000000000844A000-memory.dmp

Filesize
6.5MB

Download
memory/760-71-0x0000000006A10000-0x0000000006A2E000-memory.dmp

Filesize
120KB

Download
memory/760-51-0x0000000007400000-0x0000000007432000-memory.dmp

Filesize
200KB

Download
memory/760-89-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/760-50-0x00000000069B0000-0x00000000069FC000-memory.dmp

Filesize
304KB

Download
memory/760-27-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/760-78-0x0000000007980000-0x0000000007991000-memory.dmp

Filesize
68KB

Download
memory/760-49-0x0000000006460000-0x000000000647E000-memory.dmp

Filesize
120KB

Download
memory/760-21-0x0000000005490000-0x00000000054B2000-memory.dmp

Filesize
136KB

Download
memory/760-23-0x0000000005E10000-0x0000000005E76000-memory.dmp

Filesize
408KB

Download
memory/760-24-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/760-26-0x0000000005E80000-0x00000000061D4000-memory.dmp

Filesize
3.3MB

Download
memory/760-25-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/2328-2-0x0000000005AE0000-0x0000000006084000-memory.dmp

Filesize
5.6MB

Download
memory/2328-3-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/2328-48-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/2328-1-0x0000000000B10000-0x0000000000BB6000-memory.dmp

Filesize
664KB

Download
memory/2328-7-0x0000000005A50000-0x0000000005A68000-memory.dmp

Filesize
96KB

Download
memory/2328-4-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/2328-5-0x00000000055C0000-0x00000000055CA000-memory.dmp

Filesize
40KB

Download
memory/2328-0-0x000000007526E000-0x000000007526F000-memory.dmp

Filesize
4KB

Download
memory/2328-10-0x0000000006D00000-0x0000000006D78000-memory.dmp

Filesize
480KB

Download
memory/2328-9-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/2328-8-0x000000007526E000-0x000000007526F000-memory.dmp

Filesize
4KB

Download
memory/2328-6-0x00000000058B0000-0x000000000594C000-memory.dmp

Filesize
624KB

Download
memory/3440-19-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3440-80-0x0000000007E90000-0x0000000007EA4000-memory.dmp

Filesize
80KB

Download
memory/3440-75-0x0000000007C50000-0x0000000007C6A000-memory.dmp

Filesize
104KB

Download
memory/3440-76-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

Filesize
40KB

Download
memory/3440-77-0x0000000007ED0000-0x0000000007F66000-memory.dmp

Filesize
600KB

Download
memory/3440-18-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3440-79-0x0000000007E80000-0x0000000007E8E000-memory.dmp

Filesize
56KB

Download
memory/3440-62-0x0000000075B10000-0x0000000075B5C000-memory.dmp

Filesize
304KB

Download
memory/3440-81-0x0000000007F90000-0x0000000007FAA000-memory.dmp

Filesize
104KB

Download
memory/3440-17-0x0000000005B10000-0x0000000006138000-memory.dmp

Filesize
6.2MB

Download
memory/3440-88-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3440-16-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3440-15-0x0000000003050000-0x0000000003086000-memory.dmp

Filesize
216KB

Download
memory/4040-37-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download