formbook | b9d7c426a321fbb7955e098ed2131e21a2ccd0cbd179e5b27e68874be99a6196

General

Target

Invoice2024665-1112.exe
Size

851KB
MD5

bfe783df476aa09db0b6a7b202a4ce22
SHA1

efd869b12f33a720c7894bd4683f652acd239399
SHA256

7779dacfaf08385d377461ae4fe14557b8417c99247aac3c24eb9604c6b7f6e9
SHA512

00f85a8ae9776cd129717c639f238be62ba563c62587eb22f995dadf431262ffe77f4b8a141292d4ab2eba048e50ed72df44834341ad47380b4b161db1cafb88
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLZDhLweOBSHNDr9MI1Tzzy:ffmMv6Ckr7Mny5QLHLSaDr9/lzy

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

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/2896-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2896-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2896-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 2896	2728	Invoice2024665-1112.exe	30
PID 2896 set thread context of 1204	2896	svchost.exe	21
PID 2896 set thread context of 1204	2896	svchost.exe	21

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2788	1784	WerFault.exe	31

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Invoice2024665-1112.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2896	svchost.exe
2896	svchost.exe
2896	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2728	Invoice2024665-1112.exe
2896	svchost.exe
2896	svchost.exe
2896	svchost.exe
2896	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	svchost.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2728	Invoice2024665-1112.exe
2728	Invoice2024665-1112.exe
1204	Explorer.EXE
1204	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2728	Invoice2024665-1112.exe
2728	Invoice2024665-1112.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2896	2728	Invoice2024665-1112.exe	30
PID 2728 wrote to memory of 2896	2728	Invoice2024665-1112.exe	30
PID 2728 wrote to memory of 2896	2728	Invoice2024665-1112.exe	30
PID 2728 wrote to memory of 2896	2728	Invoice2024665-1112.exe	30
PID 2728 wrote to memory of 2896	2728	Invoice2024665-1112.exe	30
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 2896 wrote to memory of 1784	2896	svchost.exe	31
PID 1784 wrote to memory of 2788	1784	msiexec.exe	32
PID 1784 wrote to memory of 2788	1784	msiexec.exe	32
PID 1784 wrote to memory of 2788	1784	msiexec.exe	32
PID 1784 wrote to memory of 2788	1784	msiexec.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1204
- C:\Users\Admin\AppData\Local\Temp\Invoice2024665-1112.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice2024665-1112.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice2024665-1112.exe"
    3⤵
    - 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:2896
  - - C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\SysWOW64\msiexec.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1784
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1784 -s 272
        5⤵
        Program crash
        
        PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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/1204-22-0x0000000007520000-0x000000000767A000-memory.dmp

Filesize
1.4MB

Download
memory/1204-11-0x0000000002BE0000-0x0000000002CE0000-memory.dmp

Filesize
1024KB

Download
memory/1204-12-0x0000000004500000-0x00000000045F6000-memory.dmp

Filesize
984KB

Download
memory/1204-16-0x0000000004500000-0x00000000045F6000-memory.dmp

Filesize
984KB

Download
memory/1204-17-0x0000000007520000-0x000000000767A000-memory.dmp

Filesize
1.4MB

Download
memory/1784-19-0x0000000000E80000-0x0000000000E94000-memory.dmp

Filesize
80KB

Download
memory/1784-21-0x0000000000E80000-0x0000000000E94000-memory.dmp

Filesize
80KB

Download
memory/1784-18-0x0000000000E80000-0x0000000000E94000-memory.dmp

Filesize
80KB

Download
memory/2728-5-0x0000000000210000-0x0000000000214000-memory.dmp

Filesize
16KB

Download
memory/2896-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2896-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2896-15-0x0000000000470000-0x0000000000484000-memory.dmp

Filesize
80KB

Download
memory/2896-10-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download
memory/2896-7-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2896-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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