formbook | cde5c3098db9276da56db0945cad4d99d87854cb2ed9c435bdef4dd30e832868

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 20:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

invoice.exe
Size

384KB
MD5

e6fcc19f1ef03db2c4d40dcb949ce40f
SHA1

0823317ace170ee272b02368c9a3daa5a292765b
SHA256

3f5c9bf874c9e7dbbd79fcafa447c3ae0f35659827f91555ba09a2fa13a862dd
SHA512

4bdaab26e5deb5da4fa93dc583da96292f05e40dd0da2b26eb1e33d7b5ce68f3db751586839826d43d9c0202ca2dfb8cccb51eda70c72bde7cf9e80779edc460
SSDEEP

6144:yQ78PdlxClB67NxX6JyBVIbMNISinsysqZbMyLYDtVJyg:yFSejXbVhISgdsqZbHLY3

Score

10^/10

formbook rs26 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rs26

Decoy

amazon-review.info

17kaihuiba.com

timeableholdings.com

techvestorsmultifamily.com

rokketsoftware.com

abbigliamentoagricolo.com

artjiayi.com

smooouse.com

lightcastwired.com

bravuad.com

mr133.com

clubfitdartmouth.com

masturbation-stories.net

yedekparcatreni.com

pureologyrising.com

goodsystem2updating.download

fn4pk8p0o5.com

climatechangersofny.com

shuangxian023.com

lxiuot.men

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2572-16-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2572-20-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 2572	3052	invoice.exe	35
PID 2572 set thread context of 1204	2572	RegSvcs.exe	21
PID 2772 set thread context of 1204	2772	netsh.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 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	invoice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2696	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3052	invoice.exe
3052	invoice.exe
3052	invoice.exe
3052	invoice.exe
3052	invoice.exe
2572	RegSvcs.exe
2572	RegSvcs.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe
2772	netsh.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2572	RegSvcs.exe
2572	RegSvcs.exe
2572	RegSvcs.exe
2772	netsh.exe
2772	netsh.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	invoice.exe
Token: SeDebugPrivilege	2572	RegSvcs.exe
Token: SeDebugPrivilege	2772	netsh.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2696	3052	invoice.exe	31
PID 3052 wrote to memory of 2696	3052	invoice.exe	31
PID 3052 wrote to memory of 2696	3052	invoice.exe	31
PID 3052 wrote to memory of 2696	3052	invoice.exe	31
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2832	3052	invoice.exe	33
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2704	3052	invoice.exe	34
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 3052 wrote to memory of 2572	3052	invoice.exe	35
PID 1204 wrote to memory of 2772	1204	Explorer.EXE	36
PID 1204 wrote to memory of 2772	1204	Explorer.EXE	36
PID 1204 wrote to memory of 2772	1204	Explorer.EXE	36
PID 1204 wrote to memory of 2772	1204	Explorer.EXE	36
PID 2772 wrote to memory of 3008	2772	netsh.exe	37
PID 2772 wrote to memory of 3008	2772	netsh.exe	37
PID 2772 wrote to memory of 3008	2772	netsh.exe	37
PID 2772 wrote to memory of 3008	2772	netsh.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JQGuJQhYCPqeAJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5C91.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2696
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    "{path}"
    3⤵
    PID:2832
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    "{path}"
    3⤵
    PID:2704
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2572
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\SysWOW64\netsh.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:2772
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5C91.tmp

Filesize
1KB

MD5
487e617b2ead883677307e8dd18bbf46

SHA1
99b3c8b81661ab21efd68a0bd260edd2fab0d673

SHA256
d95c10f68945dd62c0cf784d270cccb6b5e0c36222cb84e0a659296014521966

SHA512
d1c3dc46761bfa6bece06a681fab8951c9f0792b5dfc7f2b2517577dac05036e2f9a95dbed12cd104841c49ba86c41e33f0b1187871df9ae4db199941873ac03

Download Submit
memory/1204-26-0x0000000004FB0000-0x0000000005134000-memory.dmp

Filesize
1.5MB

Download
memory/1204-22-0x0000000004FB0000-0x0000000005134000-memory.dmp

Filesize
1.5MB

Download
memory/2572-21-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/2572-20-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2572-18-0x0000000000940000-0x0000000000C43000-memory.dmp

Filesize
3.0MB

Download
memory/2572-16-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2572-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-12-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2572-11-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2772-25-0x00000000015A0000-0x00000000015BB000-memory.dmp

Filesize
108KB

Download
memory/2772-23-0x00000000015A0000-0x00000000015BB000-memory.dmp

Filesize
108KB

Download
memory/3052-17-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-3-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-0-0x0000000074221000-0x0000000074222000-memory.dmp

Filesize
4KB

Download
memory/3052-4-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-2-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-1-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download