formbook | 7eeedd91e430f1e9c8545e40ca7eb073e4d76104f907734f92aa4110e3ef2b9f

General

Target

odsxbin20309.exe
Size

651KB
MD5

5670fc04099860bc61fbca6c054d7ffd
SHA1

b35b270f85846d39c3eaafcf445ea0e7f25112a0
SHA256

7eeedd91e430f1e9c8545e40ca7eb073e4d76104f907734f92aa4110e3ef2b9f
SHA512

d07055e70a7f126c718b16aac950cbf0a09289acb5288492250b50d95a4dc91759ff8f63ab03174d20210651e85ea4d3675ff2599838a3c264cf06d779729023
SSDEEP

12288:l5ttYcfMRcldhg2h9t5VG3fW/aAAgLx1oiCHX+KS5LS/pL:PLYcTldhgjWiAAwBCutExL

Score

10^/10

formbook btrd discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

btrd

Decoy

everslane.com

prairieviewelectric.online

dszvhgd.com

papamuch.com

8129k.vip

jeffreestar.gold

bestguestrentals.com

nvzhuang1.net

anangtoto.com

yxfgor.top

practicalpoppers.com

thebestanglephotography.online

koormm.top

criika.net

audioflow.online

380747.net

jiuguanwang.net

bloxequities.com

v321c.com

sugar.monster

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2692-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2692-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2956-25-0x0000000000130000-0x000000000015F000-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
2192	powershell.exe

Deletes itself 1 IoCs

pid	Process
2724	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 2692	2524	odsxbin20309.exe	31
PID 2692 set thread context of 1396	2692	odsxbin20309.exe	20
PID 2956 set thread context of 1396	2956	rundll32.exe	20

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	odsxbin20309.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2692	odsxbin20309.exe
2692	odsxbin20309.exe
2192	powershell.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe
2956	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1396	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2692	odsxbin20309.exe
2692	odsxbin20309.exe
2692	odsxbin20309.exe
2956	rundll32.exe
2956	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	odsxbin20309.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	2956	rundll32.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1396	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2192	2524	odsxbin20309.exe	29
PID 2524 wrote to memory of 2192	2524	odsxbin20309.exe	29
PID 2524 wrote to memory of 2192	2524	odsxbin20309.exe	29
PID 2524 wrote to memory of 2192	2524	odsxbin20309.exe	29
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 2524 wrote to memory of 2692	2524	odsxbin20309.exe	31
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 1396 wrote to memory of 2956	1396	Explorer.EXE	32
PID 2956 wrote to memory of 2724	2956	rundll32.exe	33
PID 2956 wrote to memory of 2724	2956	rundll32.exe	33
PID 2956 wrote to memory of 2724	2956	rundll32.exe	33
PID 2956 wrote to memory of 2724	2956	rundll32.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\odsxbin20309.exe
  "C:\Users\Admin\AppData\Local\Temp\odsxbin20309.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2524
- - 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\odsxbin20309.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2192
- - C:\Users\Admin\AppData\Local\Temp\odsxbin20309.exe
    "C:\Users\Admin\AppData\Local\Temp\odsxbin20309.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2692
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:2956
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\odsxbin20309.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2724

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/1396-18-0x00000000069A0000-0x0000000006AB6000-memory.dmp

Filesize
1.1MB

Download
memory/1396-29-0x00000000074A0000-0x00000000075B4000-memory.dmp

Filesize
1.1MB

Download
memory/1396-26-0x00000000069A0000-0x0000000006AB6000-memory.dmp

Filesize
1.1MB

Download
memory/2524-19-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-3-0x00000000004C0000-0x00000000004DE000-memory.dmp

Filesize
120KB

Download
memory/2524-5-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-6-0x00000000003E0000-0x0000000000456000-memory.dmp

Filesize
472KB

Download
memory/2524-1-0x0000000000870000-0x000000000091A000-memory.dmp

Filesize
680KB

Download
memory/2524-4-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2524-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2692-14-0x0000000000AB0000-0x0000000000DB3000-memory.dmp

Filesize
3.0MB

Download
memory/2692-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-17-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2692-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2956-22-0x0000000000D90000-0x0000000000D9E000-memory.dmp

Filesize
56KB

Download
memory/2956-24-0x0000000000D90000-0x0000000000D9E000-memory.dmp

Filesize
56KB

Download
memory/2956-25-0x0000000000130000-0x000000000015F000-memory.dmp

Filesize
188KB

Download

Analysis

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