formbook | 4efa0c0ddb802a05161342bb22941fb5e45fdb423a0455995b9642d238a0dcb3

General

Target

Cf2vVo7XyxupqsL.exe
Size

587KB
MD5

0e4215aade422aeb64ff45d5712adc7e
SHA1

66303d555188ba6124021b09b3291b1326090ccf
SHA256

030d40369b21914a62ecd144abafc689073ac077c5481e4722154e2a565bc328
SHA512

89dfec073a28109fb96da6a0d1a82d520047d3f06a852757b9bb35f15283c7d746060f500969a9474a0fe0d4af8cd2515eedd8167950ef69cd0ee704a8509fd5
SSDEEP

12288:X3OSUWtbmf6juFEqopZXMg3xhEejaI3huYrDV+Zh1u8Djx8kWK2XH:uS3O6jVzMwE0huYr4+8DibK2

Score

10^/10

formbook sx01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sx01

Decoy

r-salessolutions.xyz

jdh1.info

olar-panel-jobs-93084.bond

aebrasil.shop

oshua-xaaaa.buzz

xzkm.shop

nitedviplumbing.net

nnevateknoloji.xyz

rg-a.biz

indow-replacement-34091.bond

uyersagent3percent.net

ostbag.net

ibosolv.net

ahve.today

ophotshotjobs.today

emoreez.art

ift-chairs-94905.bond

okerdom-e.best

stagr.fun

irtyf-ingrancher.info

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/1648-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1648-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1648-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2720-28-0x0000000000080000-0x00000000000AF000-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
2116	powershell.exe

Deletes itself 1 IoCs

pid	Process
2544	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 1648 set thread context of 1228	1648	Cf2vVo7XyxupqsL.exe	21
PID 1648 set thread context of 1228	1648	Cf2vVo7XyxupqsL.exe	21
PID 2720 set thread context of 1228	2720	systray.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cf2vVo7XyxupqsL.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1648	Cf2vVo7XyxupqsL.exe
1648	Cf2vVo7XyxupqsL.exe
2116	powershell.exe
1648	Cf2vVo7XyxupqsL.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1648	Cf2vVo7XyxupqsL.exe
1648	Cf2vVo7XyxupqsL.exe
1648	Cf2vVo7XyxupqsL.exe
1648	Cf2vVo7XyxupqsL.exe
2720	systray.exe
2720	systray.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	Cf2vVo7XyxupqsL.exe
Token: SeDebugPrivilege	2116	powershell.exe
Token: SeDebugPrivilege	2720	systray.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2116	2360	Cf2vVo7XyxupqsL.exe	31
PID 2360 wrote to memory of 2116	2360	Cf2vVo7XyxupqsL.exe	31
PID 2360 wrote to memory of 2116	2360	Cf2vVo7XyxupqsL.exe	31
PID 2360 wrote to memory of 2116	2360	Cf2vVo7XyxupqsL.exe	31
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 2360 wrote to memory of 1648	2360	Cf2vVo7XyxupqsL.exe	32
PID 1228 wrote to memory of 2720	1228	Explorer.EXE	34
PID 1228 wrote to memory of 2720	1228	Explorer.EXE	34
PID 1228 wrote to memory of 2720	1228	Explorer.EXE	34
PID 1228 wrote to memory of 2720	1228	Explorer.EXE	34
PID 2720 wrote to memory of 2544	2720	systray.exe	35
PID 2720 wrote to memory of 2544	2720	systray.exe	35
PID 2720 wrote to memory of 2544	2720	systray.exe	35
PID 2720 wrote to memory of 2544	2720	systray.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\Cf2vVo7XyxupqsL.exe
  "C:\Users\Admin\AppData\Local\Temp\Cf2vVo7XyxupqsL.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2360
- - 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\Cf2vVo7XyxupqsL.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2116
- - C:\Users\Admin\AppData\Local\Temp\Cf2vVo7XyxupqsL.exe
    "C:\Users\Admin\AppData\Local\Temp\Cf2vVo7XyxupqsL.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1648
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:2720
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Cf2vVo7XyxupqsL.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2544

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/1228-19-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1228-25-0x00000000051A0000-0x00000000052BB000-memory.dmp

Filesize
1.1MB

Download
memory/1228-20-0x00000000051A0000-0x00000000052BB000-memory.dmp

Filesize
1.1MB

Download
memory/1648-18-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download
memory/1648-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-15-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/1648-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2360-6-0x00000000053B0000-0x0000000005426000-memory.dmp

Filesize
472KB

Download
memory/2360-3-0x0000000000410000-0x0000000000420000-memory.dmp

Filesize
64KB

Download
memory/2360-21-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-2-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/2360-4-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000000270000-0x000000000030A000-memory.dmp

Filesize
616KB

Download
memory/2360-5-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2720-27-0x0000000000590000-0x0000000000595000-memory.dmp

Filesize
20KB

Download
memory/2720-28-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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