formbook | 9f2603a2476a025f43bfccc2b2183dd6b002b2fd82f440ae241cc5df7d8a2942

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 12:29

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General

Target

Virement 191224.exe
Size

873KB
MD5

63688ea9f539640282554416cb4a4cf4
SHA1

13cb5b6dd5a5e50648268488532bab045ea6f1fd
SHA256

9f2603a2476a025f43bfccc2b2183dd6b002b2fd82f440ae241cc5df7d8a2942
SHA512

d6997ac0072582f383fb585a48df62d84731647b170c287267ae3cedd9cb39d26f7e2bf0aab6929823aeb67cd3261f847c5e8bd91b1f679be7640cf04cc240ab
SSDEEP

12288:A7m348f2uE1zDqqc41vfOpWBidNNwOHL/hHod0NGPYzwyBP2n50ZILIE8f2:c9u2uOspAidNNrlIozdYnGau2

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 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3340-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3340-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4872-69-0x0000000000FA0000-0x0000000000FCF000-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
1592	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Virement 191224.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1816 set thread context of 3340	1816	Virement 191224.exe	99
PID 3340 set thread context of 3428	3340	Virement 191224.exe	55
PID 4872 set thread context of 3428	4872	wscript.exe	55

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	Virement 191224.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
3340	Virement 191224.exe
3340	Virement 191224.exe
3340	Virement 191224.exe
3340	Virement 191224.exe
1592	powershell.exe
1592	powershell.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe
4872	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3340	Virement 191224.exe
3340	Virement 191224.exe
3340	Virement 191224.exe
4872	wscript.exe
4872	wscript.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3340	Virement 191224.exe
Token: SeDebugPrivilege	1592	powershell.exe
Token: SeShutdownPrivilege	3428	Explorer.EXE
Token: SeCreatePagefilePrivilege	3428	Explorer.EXE
Token: SeDebugPrivilege	4872	wscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 1592	1816	Virement 191224.exe	97
PID 1816 wrote to memory of 1592	1816	Virement 191224.exe	97
PID 1816 wrote to memory of 1592	1816	Virement 191224.exe	97
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 1816 wrote to memory of 3340	1816	Virement 191224.exe	99
PID 3428 wrote to memory of 4872	3428	Explorer.EXE	100
PID 3428 wrote to memory of 4872	3428	Explorer.EXE	100
PID 3428 wrote to memory of 4872	3428	Explorer.EXE	100
PID 4872 wrote to memory of 3920	4872	wscript.exe	101
PID 4872 wrote to memory of 3920	4872	wscript.exe	101
PID 4872 wrote to memory of 3920	4872	wscript.exe	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3428
- C:\Users\Admin\AppData\Local\Temp\Virement 191224.exe
  "C:\Users\Admin\AppData\Local\Temp\Virement 191224.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1816
- - 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\Virement 191224.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1592
- - C:\Users\Admin\AppData\Local\Temp\Virement 191224.exe
    "C:\Users\Admin\AppData\Local\Temp\Virement 191224.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3340
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.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:4872
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Virement 191224.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3920

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_jj0qvklq.o5s.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1592-55-0x0000000008100000-0x000000000877A000-memory.dmp

Filesize
6.5MB

Download
memory/1592-62-0x0000000007E00000-0x0000000007E1A000-memory.dmp

Filesize
104KB

Download
memory/1592-66-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1592-26-0x0000000005FC0000-0x0000000006026000-memory.dmp

Filesize
408KB

Download
memory/1592-63-0x0000000007DE0000-0x0000000007DE8000-memory.dmp

Filesize
32KB

Download
memory/1592-61-0x0000000007D00000-0x0000000007D14000-memory.dmp

Filesize
80KB

Download
memory/1592-60-0x0000000007CF0000-0x0000000007CFE000-memory.dmp

Filesize
56KB

Download
memory/1592-59-0x0000000007CC0000-0x0000000007CD1000-memory.dmp

Filesize
68KB

Download
memory/1592-58-0x0000000007D40000-0x0000000007DD6000-memory.dmp

Filesize
600KB

Download
memory/1592-57-0x0000000007B30000-0x0000000007B3A000-memory.dmp

Filesize
40KB

Download
memory/1592-56-0x0000000007AC0000-0x0000000007ADA000-memory.dmp

Filesize
104KB

Download
memory/1592-54-0x0000000007760000-0x0000000007803000-memory.dmp

Filesize
652KB

Download
memory/1592-16-0x0000000002DE0000-0x0000000002E16000-memory.dmp

Filesize
216KB

Download
memory/1592-52-0x0000000005350000-0x0000000005360000-memory.dmp

Filesize
64KB

Download
memory/1592-42-0x0000000071130000-0x000000007117C000-memory.dmp

Filesize
304KB

Download
memory/1592-17-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/1592-41-0x0000000006D60000-0x0000000006D92000-memory.dmp

Filesize
200KB

Download
memory/1592-40-0x000000007F540000-0x000000007F550000-memory.dmp

Filesize
64KB

Download
memory/1592-21-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1592-20-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1592-24-0x0000000005630000-0x0000000005652000-memory.dmp

Filesize
136KB

Download
memory/1592-25-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/1592-19-0x0000000005990000-0x0000000005FB8000-memory.dmp

Filesize
6.2MB

Download
memory/1592-39-0x00000000067C0000-0x000000000680C000-memory.dmp

Filesize
304KB

Download
memory/1592-53-0x0000000006D30000-0x0000000006D4E000-memory.dmp

Filesize
120KB

Download
memory/1592-37-0x0000000006130000-0x0000000006484000-memory.dmp

Filesize
3.3MB

Download
memory/1592-38-0x0000000006790000-0x00000000067AE000-memory.dmp

Filesize
120KB

Download
memory/1816-4-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1816-3-0x0000000007530000-0x00000000075C2000-memory.dmp

Filesize
584KB

Download
memory/1816-10-0x00000000060D0000-0x000000000615E000-memory.dmp

Filesize
568KB

Download
memory/1816-7-0x0000000007940000-0x0000000007966000-memory.dmp

Filesize
152KB

Download
memory/1816-9-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1816-1-0x00000000006B0000-0x0000000000790000-memory.dmp

Filesize
896KB

Download
memory/1816-14-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/1816-8-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/1816-0-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/1816-2-0x0000000007A00000-0x0000000007FA4000-memory.dmp

Filesize
5.6MB

Download
memory/1816-5-0x0000000004AE0000-0x0000000004AEA000-memory.dmp

Filesize
40KB

Download
memory/1816-6-0x00000000077A0000-0x000000000783C000-memory.dmp

Filesize
624KB

Download
memory/3340-15-0x00000000019A0000-0x0000000001CEA000-memory.dmp

Filesize
3.3MB

Download
memory/3340-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3340-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3340-22-0x0000000001960000-0x0000000001974000-memory.dmp

Filesize
80KB

Download
memory/3428-27-0x00000000030A0000-0x000000000319C000-memory.dmp

Filesize
1008KB

Download
memory/3428-73-0x00000000085B0000-0x0000000008668000-memory.dmp

Filesize
736KB

Download
memory/4872-67-0x0000000000BB0000-0x0000000000BD7000-memory.dmp

Filesize
156KB

Download
memory/4872-68-0x0000000000BB0000-0x0000000000BD7000-memory.dmp

Filesize
156KB

Download
memory/4872-69-0x0000000000FA0000-0x0000000000FCF000-memory.dmp

Filesize
188KB

Download