formbook | c3b9bd6a3c03e763f6255c275cbb3a068de6feef7417d18b7a3e92c6b28753e5

General

Target

Formbook.exe
Size

177KB
MD5

325e9bc40c665d845e9edd875631ec48
SHA1

6f325ce61e9d8916cced15919cbd84fce584e14f
SHA256

c3b9bd6a3c03e763f6255c275cbb3a068de6feef7417d18b7a3e92c6b28753e5
SHA512

02760fc7cd93075f8fdb35e0a87dfee062c718fe03a28408da6a03d37eb6e39a3388c0c01611cee8d28422b930346c92f4242538a29daa8ad0a3b5cdf8d69dc4
SSDEEP

3072:FamFfATiz/CDWALN/Prl8QCUaIUZt/nmYVo+jVMDlMUqc:TJpCnN/58HUaIUZAA/jVMDXq

Score

10^/10

formbook xloader t65q discovery loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

t65q

Decoy

0oaArVDIAeJVRaUXOQ==

LNDb+polOuZWRaUXOQ==

JtmsCzRHeEwzeL2B

vnqa1XjmKA+FvOMtYjCfpA==

PObZY38RZFy5hI+UBU5z

HMWF1duWpoWGMkD8jx65AUXSWw==

q1a4x9u/45pUzx7JtUw=

eiBXszdDjIicMZGUBU5z

2ZGTqUfi76hl6hgZwPHQTHU4

yXEFKTk2ZFqpgJhtW7TlCzU88p5IsBE=

4pKcIzzkIudWRaUXOQ==

DLJZgItne1U4t/oxYjCfpA==

Gtx+wM18vK+EJGWUjf7cib+389qAog==

AZhvu+juGvcbvwuGswJ7

Is51z+aNxKdZxgvJaaSc0TM5Ondl

/J5wws+U0rZJfqUJYjCfpA==

rYz0dRg7cEwzeL2B

ZQN98UzJR6VFhog=

bSdHfxuEokkzeL2B

/5w7hZ1okomXNpqMv1s=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1672-2-0x0000000000E40000-0x0000000000E6D000-memory.dmp	xloader
behavioral2/memory/4180-8-0x00000000012F0000-0x000000000131D000-memory.dmp	xloader

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

Processes:

Formbook.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Formbook.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Formbook.exerundll32.exe

description	pid	process	target process
PID 1672 set thread context of 3456	1672	Formbook.exe	Explorer.EXE
PID 4180 set thread context of 3456	4180	rundll32.exe	Explorer.EXE

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

Formbook.exerundll32.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Formbook.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

Formbook.exerundll32.exe

pid	process
1672	Formbook.exe
1672	Formbook.exe
1672	Formbook.exe
1672	Formbook.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe
4180	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3456 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Formbook.exerundll32.exe

pid process

1672 Formbook.exe
1672 Formbook.exe
1672 Formbook.exe
4180 rundll32.exe
4180 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Formbook.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1672 Formbook.exe
Token: SeDebugPrivilege 4180 rundll32.exe

pid	process
3456	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1672	Formbook.exe
Token: SeDebugPrivilege	4180	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Explorer.EXErundll32.exe

description	pid	process	target process
PID 3456 wrote to memory of 4180	3456	Explorer.EXE	rundll32.exe
PID 3456 wrote to memory of 4180	3456	Explorer.EXE	rundll32.exe
PID 3456 wrote to memory of 4180	3456	Explorer.EXE	rundll32.exe
PID 4180 wrote to memory of 4428	4180	rundll32.exe	cmd.exe
PID 4180 wrote to memory of 4428	4180	rundll32.exe	cmd.exe
PID 4180 wrote to memory of 4428	4180	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Users\Admin\AppData\Local\Temp\Formbook.exe
  "C:\Users\Admin\AppData\Local\Temp\Formbook.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:4180
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Formbook.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1672-0-0x00000000017B0000-0x0000000001AFA000-memory.dmp

Filesize
3.3MB

Download
memory/1672-2-0x0000000000E40000-0x0000000000E6D000-memory.dmp

Filesize
180KB

Download
memory/1672-1-0x0000000000E60000-0x0000000000E61000-memory.dmp

Filesize
4KB

Download
memory/3456-3-0x0000000002D90000-0x0000000002EC9000-memory.dmp

Filesize
1.2MB

Download
memory/3456-7-0x0000000002D90000-0x0000000002EC9000-memory.dmp

Filesize
1.2MB

Download
memory/3456-10-0x0000000008760000-0x0000000008846000-memory.dmp

Filesize
920KB

Download
memory/3456-11-0x0000000008760000-0x0000000008846000-memory.dmp

Filesize
920KB

Download
memory/3456-13-0x0000000008760000-0x0000000008846000-memory.dmp

Filesize
920KB

Download
memory/4180-4-0x00000000008A0000-0x00000000008B4000-memory.dmp

Filesize
80KB

Download
memory/4180-6-0x00000000008A0000-0x00000000008B4000-memory.dmp

Filesize
80KB

Download
memory/4180-8-0x00000000012F0000-0x000000000131D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads