remcos | 20ba461023a3e0451f84770af4f5670b036d1634d2d6c3b805d87805279a945b

General

Target

PRE-ALERT ==HTHC22031529.exe
Size

17KB
MD5

fcded46d7cc1ab298a281734e1eab2dc
SHA1

1e0122d610831396d1a470ad762bd804a67ae9d9
SHA256

20ba461023a3e0451f84770af4f5670b036d1634d2d6c3b805d87805279a945b
SHA512

532531a6489dba3a68b93df74ba9cd4a6d19f64295f9638760df178e709e48087c06a7dc85d6707ba656119e9d5940993350ac41ef12f6fbf6d86102169080a3

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

172.111.234.100:5888

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-IY2SFS
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

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

Processes:

PRE-ALERT ==HTHC22031529.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	PRE-ALERT ==HTHC22031529.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PRE-ALERT ==HTHC22031529.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rikgglmmk = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tzkhxxxi\\Rikgglmmk.exe\""	PRE-ALERT ==HTHC22031529.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PRE-ALERT ==HTHC22031529.exe

description pid process target process

PID 956 set thread context of 4152 956 PRE-ALERT ==HTHC22031529.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exePRE-ALERT ==HTHC22031529.exe

pid process

2188 powershell.exe
2188 powershell.exe
956 PRE-ALERT ==HTHC22031529.exe
956 PRE-ALERT ==HTHC22031529.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PRE-ALERT ==HTHC22031529.exepowershell.exe

description pid process

Token: SeDebugPrivilege 956 PRE-ALERT ==HTHC22031529.exe
Token: SeDebugPrivilege 2188 powershell.exe

description	pid	process	target process
PID 956 set thread context of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe

pid	process
2188	powershell.exe
2188	powershell.exe
956	PRE-ALERT ==HTHC22031529.exe
956	PRE-ALERT ==HTHC22031529.exe

description	pid	process
Token: SeDebugPrivilege	956	PRE-ALERT ==HTHC22031529.exe
Token: SeDebugPrivilege	2188	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

PRE-ALERT ==HTHC22031529.exe

description	pid	process	target process
PID 956 wrote to memory of 2188	956	PRE-ALERT ==HTHC22031529.exe	powershell.exe
PID 956 wrote to memory of 2188	956	PRE-ALERT ==HTHC22031529.exe	powershell.exe
PID 956 wrote to memory of 2188	956	PRE-ALERT ==HTHC22031529.exe	powershell.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe
PID 956 wrote to memory of 4152	956	PRE-ALERT ==HTHC22031529.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\PRE-ALERT ==HTHC22031529.exe
"C:\Users\Admin\AppData\Local\Temp\PRE-ALERT ==HTHC22031529.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAA=
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2188

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:4152

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/956-130-0x0000000000DE0000-0x0000000000DEA000-memory.dmp

Filesize
40KB

Download
memory/956-131-0x0000000006FF0000-0x0000000007012000-memory.dmp

Filesize
136KB

Download
memory/956-141-0x000000000EDA0000-0x000000000F344000-memory.dmp

Filesize
5.6MB

Download
memory/956-140-0x000000000E180000-0x000000000E212000-memory.dmp

Filesize
584KB

Download
memory/2188-138-0x0000000007BB0000-0x000000000822A000-memory.dmp

Filesize
6.5MB

Download
memory/2188-132-0x0000000000000000-mapping.dmp

Download
memory/2188-136-0x0000000005D20000-0x0000000005D86000-memory.dmp

Filesize
408KB

Download
memory/2188-137-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/2188-134-0x0000000005450000-0x0000000005A78000-memory.dmp

Filesize
6.2MB

Download
memory/2188-139-0x0000000006850000-0x000000000686A000-memory.dmp

Filesize
104KB

Download
memory/2188-133-0x0000000004DE0000-0x0000000004E16000-memory.dmp

Filesize
216KB

Download
memory/2188-135-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/4152-142-0x0000000000000000-mapping.dmp

Download
memory/4152-143-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4152-144-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4152-145-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4152-146-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4152-147-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads