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 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2432-2-0x00000000000D0000-0x00000000000FD000-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-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\International\Geo\Nation	Formbook.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Formbook.exe

description pid process target process

PID 2432 set thread context of 1204 2432 Formbook.exe Explorer.EXE
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2752 2696 WerFault.exe msiexec.exe
System Location Discovery: System Language Discovery 1 TTPs 1 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:

msiexec.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language msiexec.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Formbook.exe

pid process

2432 Formbook.exe
2432 Formbook.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

Formbook.exe

pid process

2432 Formbook.exe
2432 Formbook.exe
2432 Formbook.exe

description	pid	process	target process
PID 2432 set thread context of 1204	2432	Formbook.exe	Explorer.EXE

pid	pid_target	process	target process
2752	2696	WerFault.exe	msiexec.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

pid	process
2432	Formbook.exe
2432	Formbook.exe

pid	process
2432	Formbook.exe
2432	Formbook.exe
2432	Formbook.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Formbook.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2432	Formbook.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Explorer.EXEmsiexec.exe

description	pid	process	target process
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 2696	1204	Explorer.EXE	msiexec.exe
PID 2696 wrote to memory of 2752	2696	msiexec.exe	WerFault.exe
PID 2696 wrote to memory of 2752	2696	msiexec.exe	WerFault.exe
PID 2696 wrote to memory of 2752	2696	msiexec.exe	WerFault.exe
PID 2696 wrote to memory of 2752	2696	msiexec.exe	WerFault.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2432
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 268
    3⤵
    - Program crash
    PID:2752

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/1204-3-0x0000000004C40000-0x0000000004D37000-memory.dmp

Filesize
988KB

Download
memory/1204-10-0x0000000004C40000-0x0000000004D37000-memory.dmp

Filesize
988KB

Download
memory/2432-0-0x0000000000840000-0x0000000000B43000-memory.dmp

Filesize
3.0MB

Download
memory/2432-1-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2432-2-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/2696-5-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/2696-4-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/2696-7-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads