formbook | 94ddeb299ca04b590ae0c67238d000d5212dc6302d97d00a79fbcbb1aa8ba4ae

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 14:15

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General

Target

VNXCNVCVCXJKGSD.exe
Size

289KB
MD5

903d0bd798ca8a3387247fb7c17c86d3
SHA1

bb423a6d299a6b706c63dcf0d793bfdc34ff4bda
SHA256

aa5a2cc65f212e1ca681e2cdc53fa73dabca4b15ad8319cf07cfae6b513dc6ef
SHA512

71c260fa5e7267b3f719689f4295a025941401896f01057e692820b46fe682e7ee5861d183aa96e16d67c91d4fc9f79e01af4fcab56ca09ee00a8343b2dec6e6
SSDEEP

6144:K5BzJCUXtLVxYv1vUF/LGhOzVGboBQvJwrJj/VpTQj2HZ:0rtrBF/bzV1QBSJj/Uj25

Score

10^/10

formbook oc5e discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

oc5e

Decoy

ODVenWNCx27xmAQc

4XFONwe0gAX06UZqkA==

AD3Pph7KlPo7lQ==

UR3vF7OcYyyilfE=

dYHbq1q35dWIhecnJZ3aFJEGlDwKDoVM

ZjGUfBForJkYdek=

eHXQr1tI+ySegwM4iBtUkk4KNg0FYMk=

4a8FTkEp+vCjm+4=

aCWI49e/KcsQ8E+EU4GeShabmBah

E6V1p68mgTWfSkhOiA==

iWj9y0Sg3MU2lw==

oHsJ45Ot5v14oRA8Ut6Tqxw=

trdTtZNlNF+VuwQU

tEUYVnll1L4ojA==

Es81jGdN1YW3luwCr3T+WFk0wA==

g5eqC/tlYmtjxxJjnZM4

lFju1HzZ7iWVxxEe

4KE7NhR0YoW9Wllpmw==

qWVEpocCITjplgcphg==

FuCHb/9aumc7

Signatures

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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 4484 set thread context of 3592	4484	Regsvcs.exe	56
PID 4336 set thread context of 3592	4336	help.exe	56

System Location Discovery: System Language Discovery 1 TTPs 2 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	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VNXCNVCVCXJKGSD.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4484	Regsvcs.exe
4484	Regsvcs.exe
4484	Regsvcs.exe
4336	help.exe
4336	help.exe
4336	help.exe
4336	help.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	Regsvcs.exe
Token: SeDebugPrivilege	4336	help.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 1116 wrote to memory of 4484	1116	VNXCNVCVCXJKGSD.exe	83
PID 3592 wrote to memory of 4336	3592	Explorer.EXE	84
PID 3592 wrote to memory of 4336	3592	Explorer.EXE	84
PID 3592 wrote to memory of 4336	3592	Explorer.EXE	84
PID 4336 wrote to memory of 2092	4336	help.exe	101
PID 4336 wrote to memory of 2092	4336	help.exe	101
PID 4336 wrote to memory of 2092	4336	help.exe	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Users\Admin\AppData\Local\Temp\VNXCNVCVCXJKGSD.exe
  "C:\Users\Admin\AppData\Local\Temp\VNXCNVCVCXJKGSD.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1116
- - 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:4484
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - 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:4336
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1116-1-0x0000000000C40000-0x0000000000C8C000-memory.dmp

Filesize
304KB

Download
memory/1116-2-0x0000000003000000-0x000000000300C000-memory.dmp

Filesize
48KB

Download
memory/1116-3-0x0000000003010000-0x0000000003018000-memory.dmp

Filesize
32KB

Download
memory/1116-6-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download
memory/1116-11-0x0000000074E90000-0x0000000075640000-memory.dmp

Filesize
7.7MB

Download
memory/1116-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp

Filesize
4KB

Download
memory/3592-14-0x0000000002F60000-0x0000000003053000-memory.dmp

Filesize
972KB

Download
memory/3592-25-0x0000000003060000-0x000000000310B000-memory.dmp

Filesize
684KB

Download
memory/3592-23-0x0000000003060000-0x000000000310B000-memory.dmp

Filesize
684KB

Download
memory/3592-22-0x0000000003060000-0x000000000310B000-memory.dmp

Filesize
684KB

Download
memory/3592-18-0x0000000002F60000-0x0000000003053000-memory.dmp

Filesize
972KB

Download
memory/4336-16-0x0000000000120000-0x0000000000127000-memory.dmp

Filesize
28KB

Download
memory/4336-15-0x0000000000120000-0x0000000000127000-memory.dmp

Filesize
28KB

Download
memory/4336-17-0x00000000004D0000-0x00000000004FD000-memory.dmp

Filesize
180KB

Download
memory/4484-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4484-13-0x0000000000B50000-0x0000000000B60000-memory.dmp

Filesize
64KB

Download
memory/4484-9-0x0000000001020000-0x000000000136A000-memory.dmp

Filesize
3.3MB

Download
memory/4484-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4484-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download