remcos | 20f140b6b03ab5318a5c9ce920528c982184ea1fa5e4e51dd3925eedf36ea924

Analysis

max time kernel
159s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 03:26

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General

Target
SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
Size 1.0MB
Sample240421-dy66psaa71
SHA256 20f140b6b03ab5318a5c9ce920528c982184ea1fa5e4e51dd3925eedf36ea924
MD5 18fba1571b2ef85ee29d7629b0360f8b
SHA1 160a5e70d376d45de6f8ca69cf00bdfe0530ce72
SHA512 0ff5e16ddc13cdcfe5624f3eb7d2535ef40a825f1dfc758cf3d41c390c6ce73c06d501be5c4ed16927dc2f8a6d6287ba06c5d8c43e51595f461a2552b1dd2d2b
SSDEEP 24576:1VsubUUqO599RV00dK3mtjs/c9+NHU8koM/EmRHGzY:LsubUUqOz9f0Fmtwv/O/BGzY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos elka persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ELKA

republic-fountain.gl.at.ply.gg:17113
everyone-clinic.gl.at.ply.gg:17632

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
0
copy_file
adobe.exe
copy_folder
system
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
files
keylog_path
%UserProfile%
mouse_option
false
mutex
RM-RMasj21984u31e3u2jdas9d21-OU6GOC
screenshot_crypt
true
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
60
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe

Executes dropped EXE 1 IoCs

pid	Process
4468	svchost.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4468 set thread context of 2056	4468	svchost.exe	105

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3096	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1772	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
4468	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
Token: SeDebugPrivilege	4468	svchost.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 3928	1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe	92
PID 1968 wrote to memory of 3928	1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe	92
PID 1968 wrote to memory of 3448	1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe	94
PID 1968 wrote to memory of 3448	1968	SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe	94
PID 3448 wrote to memory of 1772	3448	cmd.exe	96
PID 3448 wrote to memory of 1772	3448	cmd.exe	96
PID 3928 wrote to memory of 3096	3928	cmd.exe	97
PID 3928 wrote to memory of 3096	3928	cmd.exe	97
PID 3448 wrote to memory of 4468	3448	cmd.exe	98
PID 3448 wrote to memory of 4468	3448	cmd.exe	98
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2312	4468	svchost.exe	102
PID 4468 wrote to memory of 2044	4468	svchost.exe	103
PID 4468 wrote to memory of 2044	4468	svchost.exe	103
PID 4468 wrote to memory of 2044	4468	svchost.exe	103
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 3208	4468	svchost.exe	104
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105
PID 4468 wrote to memory of 2056	4468	svchost.exe	105

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win64.PWSX-gen.30087.11508.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:3096
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp20A2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1772
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4468
  - - C:\Windows\System32\notepad.exe
      "C:\Windows\System32\notepad.exe"
      4⤵
      PID:2312
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      4⤵
      PID:2044
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe"
      4⤵
      PID:3208
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
      4⤵
      PID:2056

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 --no-appcompat-clear --mojo-platform-channel-handle=2804 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:3520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp20A2.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp20A2.tmp.bat
Size 151B
SHA256 96003890ed516c940f968999ee8355306daef0534dba076d6a03de70723dfd50
MD5 7706c02db0e1314fc101dace8adec5ef
SHA1 9e2147c3cb6b06e4ccff98d90a2a9a5c88502d69
SHA512 e8f8c49e9d024d5a0a6e3ffad4ed8a184551c3d566e333a124eeaa4f1a5c92cf9a2b3e14d84291f279544ca18ad701301d664d9cbbdbc9ee6dcb1a9e86e4525a
MD5 SHA1 SHA512

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 1.0MB
SHA256 20f140b6b03ab5318a5c9ce920528c982184ea1fa5e4e51dd3925eedf36ea924
MD5 18fba1571b2ef85ee29d7629b0360f8b
SHA1 160a5e70d376d45de6f8ca69cf00bdfe0530ce72
SHA512 0ff5e16ddc13cdcfe5624f3eb7d2535ef40a825f1dfc758cf3d41c390c6ce73c06d501be5c4ed16927dc2f8a6d6287ba06c5d8c43e51595f461a2552b1dd2d2b
SSDEEP 24576:1VsubUUqO599RV00dK3mtjs/c9+NHU8koM/EmRHGzY:LsubUUqOz9f0Fmtwv/O/BGzY
MD5 SHA1 SHA512 SSDEEP

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memory/1968-0-0x0000017CB8D30000-0x0000017CB8D62000-memory.dmp

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memory/1968-1-0x00007FFE94220000-0x00007FFE94CE1000-memory.dmp

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memory/1968-2-0x0000017CD3220000-0x0000017CD3230000-memory.dmp

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memory/1968-3-0x0000017CD30D0000-0x0000017CD31A4000-memory.dmp

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memory/1968-8-0x00007FFE94220000-0x00007FFE94CE1000-memory.dmp

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memory/2056-16-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-23-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-15-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-31-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-17-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-18-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-19-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-29-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-27-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-22-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-24-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2056-25-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4468-21-0x00007FFE94220000-0x00007FFE94CE1000-memory.dmp

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memory/4468-20-0x00007FFE94220000-0x00007FFE94CE1000-memory.dmp

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memory/4468-13-0x00007FFE94220000-0x00007FFE94CE1000-memory.dmp

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