formbook | be21ff97c069397acfcdc32b474526405c93508ca9506e556c43a637dbdf5e57

General

Target

JUSTIFICANTE.exe
Size

611KB
MD5

dcd0a36007a90578d84114edba6fd535
SHA1

3e26f69b786a3eac007fcea9482baeb273b88e69
SHA256

a2d50617e9588ca9383289eb705aaa0d0834e2a38889fbca326352bc01894d30
SHA512

51fb50bdcf10e90f5cd3a2cf87e7b8ae79a2882f55c3d29e99cdc1c42e72157b607d33d709e0aa2a0065da08963c8130bc1ab0579acfddc2b3329228182623b2
SSDEEP

12288:KL5iAAzCNi+hBr7IUAGnLF7q4D9yE5GL1/pNR0fJTIxYZBG:KNNi+hBr8UAGxXGL10UWZBG

Score

10^/10

formbook c6ns discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c6ns

Decoy

yourherewellness.com

programing.biz

vupay.xyz

adultsexystory.com

mhealthylifestyles.com

lakelanddumpsterrental.net

cashforcarsguru.com

kibbiobank.com

clothingeeff.com

i1is165h.xyz

savingspilots.com

jyano.icu

courageouspeace.com

hypematter.online

lshoxnux3p.com

momatra.com

1orangemail.com

rollerderbyfinland.com

marathonmindsetcollective.com

theblessingscourse.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
behavioral1/memory/2832-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2832-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2716-23-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2964	powershell.exe

Deletes itself 1 IoCs

pid	Process
2092	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 2832	2600	JUSTIFICANTE.exe	33
PID 2832 set thread context of 1192	2832	JUSTIFICANTE.exe	21
PID 2716 set thread context of 1192	2716	msiexec.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	JUSTIFICANTE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2832	JUSTIFICANTE.exe
2832	JUSTIFICANTE.exe
2964	powershell.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe
2716	msiexec.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2832	JUSTIFICANTE.exe
2832	JUSTIFICANTE.exe
2832	JUSTIFICANTE.exe
2716	msiexec.exe
2716	msiexec.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	JUSTIFICANTE.exe
Token: SeDebugPrivilege	2964	powershell.exe
Token: SeDebugPrivilege	2716	msiexec.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2964	2600	JUSTIFICANTE.exe	31
PID 2600 wrote to memory of 2964	2600	JUSTIFICANTE.exe	31
PID 2600 wrote to memory of 2964	2600	JUSTIFICANTE.exe	31
PID 2600 wrote to memory of 2964	2600	JUSTIFICANTE.exe	31
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 2600 wrote to memory of 2832	2600	JUSTIFICANTE.exe	33
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2716	1192	Explorer.EXE	34
PID 2716 wrote to memory of 2092	2716	msiexec.exe	35
PID 2716 wrote to memory of 2092	2716	msiexec.exe	35
PID 2716 wrote to memory of 2092	2716	msiexec.exe	35
PID 2716 wrote to memory of 2092	2716	msiexec.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe
  "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2964
- - C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe
    "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2832
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.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:2716
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1192-16-0x00000000050B0000-0x00000000051EB000-memory.dmp

Filesize
1.2MB

Download
memory/1192-24-0x00000000050B0000-0x00000000051EB000-memory.dmp

Filesize
1.2MB

Download
memory/2600-10-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2600-2-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2600-4-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2600-1-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2600-3-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2600-0-0x0000000074C71000-0x0000000074C72000-memory.dmp

Filesize
4KB

Download
memory/2600-17-0x0000000074C70000-0x000000007521B000-memory.dmp

Filesize
5.7MB

Download
memory/2716-23-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2716-22-0x0000000000430000-0x0000000000444000-memory.dmp

Filesize
80KB

Download
memory/2716-20-0x0000000000430000-0x0000000000444000-memory.dmp

Filesize
80KB

Download
memory/2832-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-15-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/2832-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2832-12-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2832-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2832-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2832-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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