formbook | efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f

Analysis

max time kernel
147s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-01-2025 07:01

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General

Target

efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.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
behavioral1/memory/2860-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2660-28-0x0000000000080000-0x00000000000AF000-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
1548	powershell.exe
2820	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 372 set thread context of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 2860 set thread context of 1192	2860	RegSvcs.exe	21
PID 2660 set thread context of 1192	2660	chkdsk.exe	21

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	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.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
2832	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
2820	powershell.exe
1548	powershell.exe
372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
2860	RegSvcs.exe
2860	RegSvcs.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe
2660	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2860	RegSvcs.exe
2860	RegSvcs.exe
2860	RegSvcs.exe
2660	chkdsk.exe
2660	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	1548	powershell.exe
Token: SeDebugPrivilege	2860	RegSvcs.exe
Token: SeDebugPrivilege	2660	chkdsk.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 1548	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	31
PID 372 wrote to memory of 1548	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	31
PID 372 wrote to memory of 1548	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	31
PID 372 wrote to memory of 1548	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	31
PID 372 wrote to memory of 2820	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	33
PID 372 wrote to memory of 2820	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	33
PID 372 wrote to memory of 2820	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	33
PID 372 wrote to memory of 2820	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	33
PID 372 wrote to memory of 2832	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	34
PID 372 wrote to memory of 2832	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	34
PID 372 wrote to memory of 2832	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	34
PID 372 wrote to memory of 2832	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	34
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2984	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	37
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 372 wrote to memory of 2860	372	efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe	38
PID 1192 wrote to memory of 2660	1192	Explorer.EXE	39
PID 1192 wrote to memory of 2660	1192	Explorer.EXE	39
PID 1192 wrote to memory of 2660	1192	Explorer.EXE	39
PID 1192 wrote to memory of 2660	1192	Explorer.EXE	39
PID 2660 wrote to memory of 2864	2660	chkdsk.exe	40
PID 2660 wrote to memory of 2864	2660	chkdsk.exe	40
PID 2660 wrote to memory of 2864	2660	chkdsk.exe	40
PID 2660 wrote to memory of 2864	2660	chkdsk.exe	40

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe
  "C:\Users\Admin\AppData\Local\Temp\efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:372
- - 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\efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1548
- - 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:2820
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cvRSCwXQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE59E.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2832
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:2984
- - 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:2860
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2660
- - 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:2864

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\Temp\tmpE59E.tmp

Filesize
1KB

MD5
83f67150ea1a78a72e10389833ac60cf

SHA1
f8102ce90a39c26fe5035f1af1c5fd06461e68b9

SHA256
3f576dcae728ea68b8fa566612fa17419016967bc49eae79f1f1c21d52cf8d37

SHA512
b4d86751cbe9bc9036b8e6b777edc23b12d717ccdfbe1eac6d9624d72c6169ffaf5e24cceacedfdf5fcc67545aab8d73ba6f3d062d9ceb603d12447f0a1cd636

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
97a234f12d323d1f8e001505664d61be

SHA1
26b8f0e2b9ecc27a885ea9b1a45f212b2dbfa5b1

SHA256
a70bd081bfb56b0515721d734f8da7792cbae3d17b8eac9e401a0b4e68191c7f

SHA512
bd732d51a7f13681e6764e35b35ace79cabf7264fada5ee781804c8f9a923b66aad75c3659c5e56396be5bb96f7ddabd94d943b944695e8a2cd760fe77675e3a

Download Submit
memory/372-4-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/372-25-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/372-0-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/372-5-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/372-6-0x00000000042A0000-0x0000000004318000-memory.dmp

Filesize
480KB

Download
memory/372-2-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/372-1-0x0000000010290000-0x0000000010362000-memory.dmp

Filesize
840KB

Download
memory/372-3-0x00000000004E0000-0x0000000000506000-memory.dmp

Filesize
152KB

Download
memory/2660-28-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2660-27-0x0000000000310000-0x0000000000317000-memory.dmp

Filesize
28KB

Download
memory/2860-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2860-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2860-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download