formbook | 884c7ea15aba23c993192d3c0641508443f594ae71c15d068d42fe7022ad82b5

General

Target

41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
Size

532KB
MD5

b2f556607df50936eb1c0664034427ba
SHA1

7ca4894a3804e721e85d31941bec38170099226e
SHA256

41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d
SHA512

a1ded171b38c3e5a37dba096e8c04b19c7cd3e46587b7681c00df2baad1e28a2ac917857e0c59de7448ed353383dc6b75c4f2cd93804028e05223bada11b471a
SSDEEP

6144:VaUDG3Kp1D6VEJD6LpypZ5xw6ZzzyJ9VecftKGjiqG4ErnbST6n+lDAAG8:VaUDd76VEt6QpZ5x+ltBmqG4ErmdAAr

Score

10^/10

formbook 73dc agilenet discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

73dc

Decoy

qaimd.info

masterlatform.net

daokequan-pdd.com

danieldelcarmen.com

nissancraft.com

gwenscuisine.com

caoyejiasi.com

jobscsra.com

drinkgarden.com

kountrygirljewelry.com

bavariaimmolounge.com

tepthera.com

buzzstones.com

massagemmasculinaemsp.net

prettymixy.com

czczjy.com

yourorder.win

bridgesbecrazy.com

669usf.info

keithnewbyartgallery.com

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/2452-1-0x0000000000250000-0x00000000002DA000-memory.dmp	formbook
behavioral2/memory/3080-16-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/3080-22-0x0000000000400000-0x000000000042D000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

pid	Process
3080	AddInProcess32.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/2452-4-0x0000000004C30000-0x0000000004C44000-memory.dmp	agile_net

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XHT4RDKXUTRD = "C:\\Program Files (x86)\\Erz2d\\audiodg9r6hzl.exe"	raserver.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 3080 set thread context of 3448	3080	AddInProcess32.exe	56
PID 3240 set thread context of 3448	3240	raserver.exe	56

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Erz2d\audiodg9r6hzl.exe	raserver.exe

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	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
3080	AddInProcess32.exe
3080	AddInProcess32.exe
3080	AddInProcess32.exe
3080	AddInProcess32.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3080	AddInProcess32.exe
3080	AddInProcess32.exe
3080	AddInProcess32.exe
3240	raserver.exe
3240	raserver.exe
3240	raserver.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
Token: SeDebugPrivilege	3080	AddInProcess32.exe
Token: SeDebugPrivilege	3240	raserver.exe
Token: SeShutdownPrivilege	3448	Explorer.EXE
Token: SeCreatePagefilePrivilege	3448	Explorer.EXE
Token: SeShutdownPrivilege	3448	Explorer.EXE
Token: SeCreatePagefilePrivilege	3448	Explorer.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 2452 wrote to memory of 3080	2452	41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe	89
PID 3448 wrote to memory of 3240	3448	Explorer.EXE	92
PID 3448 wrote to memory of 3240	3448	Explorer.EXE	92
PID 3448 wrote to memory of 3240	3448	Explorer.EXE	92
PID 3240 wrote to memory of 392	3240	raserver.exe	93
PID 3240 wrote to memory of 392	3240	raserver.exe	93
PID 3240 wrote to memory of 392	3240	raserver.exe	93
PID 3240 wrote to memory of 1872	3240	raserver.exe	95
PID 3240 wrote to memory of 1872	3240	raserver.exe	95
PID 3240 wrote to memory of 1872	3240	raserver.exe	95
PID 3240 wrote to memory of 4940	3240	raserver.exe	97
PID 3240 wrote to memory of 4940	3240	raserver.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Users\Admin\AppData\Local\Temp\41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe
  "C:\Users\Admin\AppData\Local\Temp\41f341ae994cf53488e0a96a6a531c9ef26c31ad763b7f858b278657051be31d.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3080
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3240
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:392
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1872
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

Filesize
42KB

MD5
9827ff3cdf4b83f9c86354606736ca9c

SHA1
e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

SHA256
c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

SHA512
8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
memory/2452-9-0x0000000004F40000-0x0000000004F48000-memory.dmp

Filesize
32KB

Download
memory/2452-8-0x0000000004FA0000-0x0000000004FE4000-memory.dmp

Filesize
272KB

Download
memory/2452-4-0x0000000004C30000-0x0000000004C44000-memory.dmp

Filesize
80KB

Download
memory/2452-5-0x0000000004C40000-0x0000000004C48000-memory.dmp

Filesize
32KB

Download
memory/2452-6-0x0000000004EE0000-0x0000000004EE8000-memory.dmp

Filesize
32KB

Download
memory/2452-7-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-2-0x0000000005170000-0x0000000005714000-memory.dmp

Filesize
5.6MB

Download
memory/2452-3-0x0000000004CB0000-0x0000000004D42000-memory.dmp

Filesize
584KB

Download
memory/2452-11-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-12-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/2452-13-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-15-0x0000000006160000-0x0000000006182000-memory.dmp

Filesize
136KB

Download
memory/2452-0-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/2452-1-0x0000000000250000-0x00000000002DA000-memory.dmp

Filesize
552KB

Download
memory/2452-19-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/3080-16-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3080-22-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3080-23-0x0000000001200000-0x0000000001214000-memory.dmp

Filesize
80KB

Download
memory/3080-20-0x0000000001690000-0x00000000019DA000-memory.dmp

Filesize
3.3MB

Download
memory/3240-25-0x00000000008F0000-0x000000000090F000-memory.dmp

Filesize
124KB

Download
memory/3240-27-0x00000000008F0000-0x000000000090F000-memory.dmp

Filesize
124KB

Download
memory/3448-24-0x0000000008750000-0x00000000088A4000-memory.dmp

Filesize
1.3MB

Download
memory/3448-29-0x0000000008750000-0x00000000088A4000-memory.dmp

Filesize
1.3MB

Download
memory/3448-33-0x0000000008620000-0x0000000008739000-memory.dmp

Filesize
1.1MB

Download
memory/3448-34-0x0000000008620000-0x0000000008739000-memory.dmp

Filesize
1.1MB

Download
memory/3448-36-0x0000000008620000-0x0000000008739000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads