formbook | b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93a

Analysis

max time kernel
102s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-10-2024 20:53

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General

Target

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
Size

590KB
MD5

9670e05fd8e4a6fb0b5db5436c3832a0
SHA1

1a77ac485ab8271b77c7a5e31aa7aae84ab936f8
SHA256

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93a
SHA512

d74e47e8fcb1c1029d06403c867774dbc563050d24326b83915467f6bb71f7e40cf2656ae839db35802c9aac0e7c7d1fe8c9476a8ef98292b55702b76ef490fb
SSDEEP

12288:Uh8bQbrxKlcjdOliPwsSpRYAKrgCqZKVvsABefO5fw:U+I9kiPqR/04KCABem

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

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

Processes:

resource	yara_rule
behavioral2/memory/3776-11-0x0000000000400000-0x000000000042F000-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

Processes:

powershell.exe

pid	Process
1340	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

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

description	pid	Process	procid_target
PID 1332 set thread context of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.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 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

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exepowershell.exe

pid	Process
3776	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
3776	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
1340	powershell.exe
1340	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description	pid	Process
Token: SeDebugPrivilege	1340	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe

description	pid	Process	procid_target
PID 1332 wrote to memory of 1340	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	94
PID 1332 wrote to memory of 1340	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	94
PID 1332 wrote to memory of 1340	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	94
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96
PID 1332 wrote to memory of 3776	1332	b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe	96

C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
"C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1332
- 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\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1340
- C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe
  "C:\Users\Admin\AppData\Local\Temp\b4a385e3626a025b4bff6b40295656d39310662e23380c5e869b332c48f7b93aN.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3776

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kdtaybo0.jsk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1332-1-0x0000000000850000-0x00000000008EA000-memory.dmp

Filesize
616KB

Download
memory/1332-2-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/1332-3-0x00000000052D0000-0x0000000005362000-memory.dmp

Filesize
584KB

Download
memory/1332-4-0x00000000053A0000-0x00000000053AA000-memory.dmp

Filesize
40KB

Download
memory/1332-5-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1332-6-0x0000000008BF0000-0x0000000008C02000-memory.dmp

Filesize
72KB

Download
memory/1332-7-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/1332-8-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1332-9-0x0000000006720000-0x0000000006796000-memory.dmp

Filesize
472KB

Download
memory/1332-10-0x000000000B3B0000-0x000000000B44C000-memory.dmp

Filesize
624KB

Download
memory/1332-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/1332-13-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1340-52-0x00000000072D0000-0x00000000072EA000-memory.dmp

Filesize
104KB

Download
memory/1340-44-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-17-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-18-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-16-0x0000000004A10000-0x0000000004A46000-memory.dmp

Filesize
216KB

Download
memory/1340-19-0x00000000051B0000-0x00000000057D8000-memory.dmp

Filesize
6.2MB

Download
memory/1340-20-0x0000000004FE0000-0x0000000005002000-memory.dmp

Filesize
136KB

Download
memory/1340-21-0x0000000005090000-0x00000000050F6000-memory.dmp

Filesize
408KB

Download
memory/1340-22-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/1340-62-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-32-0x0000000005960000-0x0000000005CB4000-memory.dmp

Filesize
3.3MB

Download
memory/1340-33-0x0000000005F80000-0x0000000005F9E000-memory.dmp

Filesize
120KB

Download
memory/1340-34-0x0000000006030000-0x000000000607C000-memory.dmp

Filesize
304KB

Download
memory/1340-35-0x0000000006F80000-0x0000000006FB2000-memory.dmp

Filesize
200KB

Download
memory/1340-36-0x0000000070740000-0x000000007078C000-memory.dmp

Filesize
304KB

Download
memory/1340-15-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/1340-48-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-49-0x00000000071C0000-0x0000000007263000-memory.dmp

Filesize
652KB

Download
memory/1340-50-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1340-47-0x0000000006580000-0x000000000659E000-memory.dmp

Filesize
120KB

Download
memory/1340-59-0x00000000075F0000-0x00000000075F8000-memory.dmp

Filesize
32KB

Download
memory/1340-51-0x0000000007910000-0x0000000007F8A000-memory.dmp

Filesize
6.5MB

Download
memory/1340-53-0x0000000007340000-0x000000000734A000-memory.dmp

Filesize
40KB

Download
memory/1340-54-0x0000000007550000-0x00000000075E6000-memory.dmp

Filesize
600KB

Download
memory/1340-55-0x00000000074D0000-0x00000000074E1000-memory.dmp

Filesize
68KB

Download
memory/1340-56-0x0000000007500000-0x000000000750E000-memory.dmp

Filesize
56KB

Download
memory/1340-57-0x0000000007510000-0x0000000007524000-memory.dmp

Filesize
80KB

Download
memory/1340-58-0x0000000007610000-0x000000000762A000-memory.dmp

Filesize
104KB

Download
memory/3776-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3776-14-0x0000000001200000-0x000000000154A000-memory.dmp

Filesize
3.3MB

Download
memory/3776-63-0x0000000001200000-0x000000000154A000-memory.dmp

Filesize
3.3MB

Download