remcos | 34ad5c6c83fce7cec4232cbbff121934dfe93db3d3a95738f8d36a02da36d1f5

General

Target

POT98765400098765.exe
Size

685KB
MD5

f2a5a6b811805385156c3b820399e20e
SHA1

3724daa63f56b24ba08d83abf150d8b45728619b
SHA256

2fb0600e3f80a84d2e606d9dcebfae82473877af39e7c7b878d466318f7077af
SHA512

dbb724dc71e7a1f38838e86393bcbe59ccee16cabc131218911414223282060db71635196b636a60c5b4263d111d857b62fe597a0fc4b6f4ae2d9f8ed6a58a4a
SSDEEP

12288:StWFbRSnw9raCMSWo3zf6dbtYMwDYnpF0PsNpWHq53PTtrE8yfEozJ7yWYl/qcHg:So59rVjfICknEPGUS3RKEozJ7Al/m

Score

10^/10

remcos remotehost execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-TLPQMO
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

Drops startup file 2 IoCs

Processes:

Powershell.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

POT98765400098765.exe

description pid process target process

PID 2748 set thread context of 2836 2748 POT98765400098765.exe POT98765400098765.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

Powershell.exe

pid process

3032 Powershell.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1692 2836 WerFault.exe POT98765400098765.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Powershell.exe

pid process

3032 Powershell.exe
3032 Powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Powershell.exe

description pid process

Token: SeDebugPrivilege 3032 Powershell.exe

description	pid	process	target process
PID 2748 set thread context of 2836	2748	POT98765400098765.exe	POT98765400098765.exe

pid	process
3032	Powershell.exe

pid	pid_target	process	target process
1692	2836	WerFault.exe	POT98765400098765.exe

pid	process
3032	Powershell.exe
3032	Powershell.exe

description	pid	process
Token: SeDebugPrivilege	3032	Powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

POT98765400098765.exe

description	pid	process	target process
PID 2748 wrote to memory of 3032	2748	POT98765400098765.exe	Powershell.exe
PID 2748 wrote to memory of 3032	2748	POT98765400098765.exe	Powershell.exe
PID 2748 wrote to memory of 3032	2748	POT98765400098765.exe	Powershell.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe
PID 2748 wrote to memory of 2836	2748	POT98765400098765.exe	POT98765400098765.exe

C:\Users\Admin\AppData\Local\Temp\POT98765400098765.exe
"C:\Users\Admin\AppData\Local\Temp\POT98765400098765.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2748

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\POT98765400098765.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
2⤵
- Drops startup file
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3032

C:\Users\Admin\AppData\Local\Temp\POT98765400098765.exe
"C:\Users\Admin\AppData\Local\Temp\POT98765400098765.exe"
2⤵
PID:2836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2836 -s 516
3⤵
- Program crash
PID:1692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2836 -ip 2836
1⤵
PID:3660

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\Temp\__PSScriptPolicyTest_bpkwn2xi.oqq.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2748-1-0x00000000001F0000-0x00000000002A2000-memory.dmp

Filesize
712KB

Download
memory/2748-2-0x0000000005140000-0x00000000056E4000-memory.dmp

Filesize
5.6MB

Download
memory/2748-3-0x0000000004B90000-0x0000000004C22000-memory.dmp

Filesize
584KB

Download
memory/2748-4-0x0000000004B10000-0x0000000004B1A000-memory.dmp

Filesize
40KB

Download
memory/2748-5-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2748-6-0x0000000004E10000-0x0000000004EBE000-memory.dmp

Filesize
696KB

Download
memory/2748-7-0x0000000004F60000-0x0000000004FFC000-memory.dmp

Filesize
624KB

Download
memory/2748-42-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2748-28-0x0000000004B50000-0x0000000004B58000-memory.dmp

Filesize
32KB

Download
memory/2748-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/2836-30-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/2836-35-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/2836-40-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/3032-9-0x0000000005910000-0x0000000005F38000-memory.dmp

Filesize
6.2MB

Download
memory/3032-11-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3032-12-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3032-21-0x00000000061E0000-0x0000000006534000-memory.dmp

Filesize
3.3MB

Download
memory/3032-26-0x0000000006820000-0x000000000683E000-memory.dmp

Filesize
120KB

Download
memory/3032-14-0x0000000005F40000-0x0000000005FA6000-memory.dmp

Filesize
408KB

Download
memory/3032-13-0x0000000005850000-0x0000000005872000-memory.dmp

Filesize
136KB

Download
memory/3032-15-0x0000000005FB0000-0x0000000006016000-memory.dmp

Filesize
408KB

Download
memory/3032-10-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3032-27-0x0000000006DB0000-0x0000000006DFC000-memory.dmp

Filesize
304KB

Download
memory/3032-8-0x0000000005250000-0x0000000005286000-memory.dmp

Filesize
216KB

Download
memory/3032-43-0x0000000007890000-0x0000000007926000-memory.dmp

Filesize
600KB

Download
memory/3032-45-0x0000000006CD0000-0x0000000006CF2000-memory.dmp

Filesize
136KB

Download
memory/3032-44-0x0000000006C70000-0x0000000006C8A000-memory.dmp

Filesize
104KB

Download
memory/3032-49-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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