formbook | efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/01/2025, 08:18

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General

Target

Bankcerticate223pdf.exe
Size

819KB
MD5

05bf21401fdd83ba54d1ad55f909e590
SHA1

47efbfdfcfe6a39499d1bd5bf0fe2a27ade6c0ff
SHA256

efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f
SHA512

99fab03cb018c20e2f647c318db6861798165891d2641f2dcb8fbc9e2bbe27eb6e1200bda8f6f1e92a97b4ca2c4c31f4c158ea82cd7ca755363932b9bd83b654
SSDEEP

12288:zpX2dGTyWXV7O7L5BDEYQfWusPTPzcbGfiwP+SepsWGrvGAGT:92MxO7JzcbGqwZepdGW

Score

10^/10

formbook a02d discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a02d

Decoy

coplus.market

oofing-jobs-74429.bond

healchemists.xyz

oofcarpenternearme-jp.xyz

enewebsolutions.online

harepoint.legal

88977.club

omptables.xyz

eat-pumps-31610.bond

endown.graphics

amsexgirls.website

ovevibes.xyz

u-thiensu.online

yblinds.xyz

rumpchiefofstaff.store

erzog.fun

rrm.lat

agiclime.pro

agaviet59.shop

lbdoanhnhan.net

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/1932-36-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3596-88-0x0000000000ED0000-0x0000000000EFF000-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
1684	powershell.exe
776	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Bankcerticate223pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 1932	4216	Bankcerticate223pdf.exe	95
PID 1932 set thread context of 3436	1932	RegSvcs.exe	56
PID 3596 set thread context of 3436	3596	cmstp.exe	56

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 6 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	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bankcerticate223pdf.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
1788	schtasks.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4216	Bankcerticate223pdf.exe
1684	powershell.exe
1684	powershell.exe
4216	Bankcerticate223pdf.exe
1932	RegSvcs.exe
1932	RegSvcs.exe
776	powershell.exe
1932	RegSvcs.exe
1932	RegSvcs.exe
776	powershell.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe
3596	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1932	RegSvcs.exe
1932	RegSvcs.exe
1932	RegSvcs.exe
3596	cmstp.exe
3596	cmstp.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	Bankcerticate223pdf.exe
Token: SeDebugPrivilege	1684	powershell.exe
Token: SeDebugPrivilege	776	powershell.exe
Token: SeDebugPrivilege	1932	RegSvcs.exe
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE
Token: SeDebugPrivilege	3596	cmstp.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 1684	4216	Bankcerticate223pdf.exe	89
PID 4216 wrote to memory of 1684	4216	Bankcerticate223pdf.exe	89
PID 4216 wrote to memory of 1684	4216	Bankcerticate223pdf.exe	89
PID 4216 wrote to memory of 776	4216	Bankcerticate223pdf.exe	91
PID 4216 wrote to memory of 776	4216	Bankcerticate223pdf.exe	91
PID 4216 wrote to memory of 776	4216	Bankcerticate223pdf.exe	91
PID 4216 wrote to memory of 1788	4216	Bankcerticate223pdf.exe	92
PID 4216 wrote to memory of 1788	4216	Bankcerticate223pdf.exe	92
PID 4216 wrote to memory of 1788	4216	Bankcerticate223pdf.exe	92
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 4216 wrote to memory of 1932	4216	Bankcerticate223pdf.exe	95
PID 3436 wrote to memory of 3596	3436	Explorer.EXE	96
PID 3436 wrote to memory of 3596	3436	Explorer.EXE	96
PID 3436 wrote to memory of 3596	3436	Explorer.EXE	96
PID 3596 wrote to memory of 3356	3596	cmstp.exe	97
PID 3596 wrote to memory of 3356	3596	cmstp.exe	97
PID 3596 wrote to memory of 3356	3596	cmstp.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Users\Admin\AppData\Local\Temp\Bankcerticate223pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Bankcerticate223pdf.exe"
  2⤵
  - 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:4216
- - 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\Bankcerticate223pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1684
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\cvRSCwXQ.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:776
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cvRSCwXQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp913.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1788
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1932
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:3596
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3356

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
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
90650349ad08463c4db5a3527832a2bc

SHA1
a2786c2c8a5621ddf4c30d6e6a8046e0d664c743

SHA256
f2c5043aeee44caf5171341f86a1b699c5609da259bd1a9367c5e4eed0b28ed0

SHA512
cf0b78d021985e6b0954859d2865e7319ca29f907898f4212df92cbc144120c3685f1dfcc103efc7b0551e04aaa62c853a1db8be05ff20f934629ae883177579

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_25jj3lhf.2oq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp913.tmp

Filesize
1KB

MD5
e29cb410623e35673e01cc46cc0b776e

SHA1
23a3c0f590cd3a3c76d583d6a60f7409c16180f8

SHA256
1f39ff6671e87cf8521116acdc7b95f41326ed36a8e9aad618dc55c9b847cf57

SHA512
5026a5bcd95c144f810dbcf75a7c24fc4ae20309459ddfa7468ea05abd88b7b604e85e88ebfd15dcbdf75b742b231b51e564dc05046c21d30b5d56a692178d03

Download Submit
memory/776-78-0x0000000007B90000-0x0000000007BA4000-memory.dmp

Filesize
80KB

Download
memory/776-64-0x0000000070200000-0x000000007024C000-memory.dmp

Filesize
304KB

Download
memory/1684-34-0x0000000005DD0000-0x0000000005DEE000-memory.dmp

Filesize
120KB

Download
memory/1684-75-0x0000000007370000-0x0000000007406000-memory.dmp

Filesize
600KB

Download
memory/1684-86-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1684-80-0x0000000007410000-0x0000000007418000-memory.dmp

Filesize
32KB

Download
memory/1684-79-0x0000000007430000-0x000000000744A000-memory.dmp

Filesize
104KB

Download
memory/1684-15-0x0000000002480000-0x00000000024B6000-memory.dmp

Filesize
216KB

Download
memory/1684-17-0x0000000005140000-0x0000000005768000-memory.dmp

Filesize
6.2MB

Download
memory/1684-16-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1684-18-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1684-19-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1684-20-0x0000000004F00000-0x0000000004F22000-memory.dmp

Filesize
136KB

Download
memory/1684-21-0x0000000005020000-0x0000000005086000-memory.dmp

Filesize
408KB

Download
memory/1684-22-0x0000000005770000-0x00000000057D6000-memory.dmp

Filesize
408KB

Download
memory/1684-77-0x0000000007320000-0x000000000732E000-memory.dmp

Filesize
56KB

Download
memory/1684-30-0x00000000057E0000-0x0000000005B34000-memory.dmp

Filesize
3.3MB

Download
memory/1684-76-0x00000000072F0000-0x0000000007301000-memory.dmp

Filesize
68KB

Download
memory/1684-74-0x0000000007160000-0x000000000716A000-memory.dmp

Filesize
40KB

Download
memory/1684-63-0x00000000070F0000-0x000000000710A000-memory.dmp

Filesize
104KB

Download
memory/1684-35-0x00000000060B0000-0x00000000060FC000-memory.dmp

Filesize
304KB

Download
memory/1684-62-0x0000000007730000-0x0000000007DAA000-memory.dmp

Filesize
6.5MB

Download
memory/1684-61-0x0000000006DF0000-0x0000000006E93000-memory.dmp

Filesize
652KB

Download
memory/1684-50-0x0000000070200000-0x000000007024C000-memory.dmp

Filesize
304KB

Download
memory/1684-49-0x0000000006DB0000-0x0000000006DE2000-memory.dmp

Filesize
200KB

Download
memory/1684-60-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/1932-36-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3436-92-0x00000000086D0000-0x000000000881F000-memory.dmp

Filesize
1.3MB

Download
memory/3596-87-0x0000000000B10000-0x0000000000B26000-memory.dmp

Filesize
88KB

Download
memory/3596-88-0x0000000000ED0000-0x0000000000EFF000-memory.dmp

Filesize
188KB

Download
memory/4216-10-0x0000000005BD0000-0x0000000005C48000-memory.dmp

Filesize
480KB

Download
memory/4216-5-0x0000000002420000-0x000000000242A000-memory.dmp

Filesize
40KB

Download
memory/4216-6-0x0000000007290000-0x000000000732C000-memory.dmp

Filesize
624KB

Download
memory/4216-3-0x0000000007000000-0x0000000007092000-memory.dmp

Filesize
584KB

Download
memory/4216-39-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/4216-9-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/4216-2-0x0000000007500000-0x0000000007AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4216-1-0x00000000000C0000-0x0000000000192000-memory.dmp

Filesize
840KB

Download
memory/4216-8-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/4216-7-0x0000000007330000-0x0000000007356000-memory.dmp

Filesize
152KB

Download
memory/4216-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/4216-4-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download