formbook | 8140718075fb3cf55e098f68fa8dfc75022a22fb658611503880b4c0c674d71f

General

Target

SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe
Size

695KB
MD5

0fa31cdedfad8f0dd2a1b1b6c0f1b957
SHA1

91148974cf0d66aaac1648b64404b9c24d141d3c
SHA256

8140718075fb3cf55e098f68fa8dfc75022a22fb658611503880b4c0c674d71f
SHA512

f78905dd816c7f3f34ee5f2c3fcfad21383dbe58652fe475a13900b39482a2c6b14f1ab114d34a0f5e281aa325d676333d5fc1d8c55bcef25983a1aa5ce4b6e9
SSDEEP

12288:9GZKzvNUOBKYvI8hGayiRMhBcRiPNWZIBRR4LPJiyIA/ZMDPwffC0UNj6eWf1yrw:AOOyGPiRMhBciPHrRqJiyIZPwffC00O5

Score

10^/10

formbook m49z discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

m49z

Decoy

ormswarm.xyz

awn-care-63587.bond

uymetanail5.online

mergencyloan007.xyz

545.top

eiliao596.pro

ackersandmoverschennai.net

ehdiahmadvandmusicbest.click

tlgxmb2024.cloud

ulfcoastharborhopper.pro

rohns-disease-early-signs.today

oldenhorizonsbgcl.click

weetindulgencepro.xyz

yexoiup.xyz

yself-solar.net

kfirsatimla.online

bropub3.online

ouljourney.online

usvf76f.shop

onnaberich.online

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/3056-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2556-18-0x0000000000080000-0x00000000000AF000-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
2792	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 3056 set thread context of 1244	3056	RegSvcs.exe	21
PID 2556 set thread context of 1244	2556	chkdsk.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3056	RegSvcs.exe
3056	RegSvcs.exe
2792	powershell.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe
2556	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3056	RegSvcs.exe
3056	RegSvcs.exe
3056	RegSvcs.exe
2556	chkdsk.exe
2556	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	RegSvcs.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2556	chkdsk.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 2792	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	30
PID 2276 wrote to memory of 2792	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	30
PID 2276 wrote to memory of 2792	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	30
PID 2276 wrote to memory of 2792	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	30
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 2276 wrote to memory of 3056	2276	SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe	32
PID 1244 wrote to memory of 2556	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2556	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2556	1244	Explorer.EXE	33
PID 1244 wrote to memory of 2556	1244	Explorer.EXE	33
PID 2556 wrote to memory of 2996	2556	chkdsk.exe	34
PID 2556 wrote to memory of 2996	2556	chkdsk.exe	34
PID 2556 wrote to memory of 2996	2556	chkdsk.exe	34
PID 2556 wrote to memory of 2996	2556	chkdsk.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2276
- - 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\SecuriteInfo.com.Win32.CrypterX-gen.29279.29610.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2792
- - 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:3056
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2996

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

Query Registry

1

T1012

System Information Discovery

2

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/2276-6-0x0000000004E80000-0x0000000004EF6000-memory.dmp

Filesize
472KB

Download
memory/2276-0-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/2276-2-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2276-3-0x00000000007D0000-0x00000000007E8000-memory.dmp

Filesize
96KB

Download
memory/2276-4-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/2276-5-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2276-1-0x00000000001E0000-0x0000000000290000-memory.dmp

Filesize
704KB

Download
memory/2276-16-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2556-17-0x0000000000E80000-0x0000000000E87000-memory.dmp

Filesize
28KB

Download
memory/2556-18-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/3056-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3056-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3056-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3056-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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