remcos | e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 03:02

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General

Target

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
Size

966KB
MD5

f3e307899834694db498e895cac1dbfc
SHA1

70b232b365656082f79d07c4c4db584d90befa6f
SHA256

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f
SHA512

da23dd49a1ef7b281eb90ddf1c166d4f30a35d0fee2ddafcd146932e4a429669724550d3451549a852361a0d1e09362b13545cace490944dba8afbb28f4def9e
SSDEEP

12288:24CMwo4aGsl0flTM3gk1LOjUnF5r1xyJnyrO2xM3agDrkPNCT7vI1Jhc0Xr1A:mF9TMprr3yRz2i9yNk7vI1Jhc4r

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

91.92.247.97:2505

stefracino.store:2505

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
true
install_flag
false
keylog_crypt
true
keylog_file
togs.dat
keylog_flag
false
keylog_folder
stefcos
mouse_option
false
mutex
Rmc-POOUYY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 13 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2428-44-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-45-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-47-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-49-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-50-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-52-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-51-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-53-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-100-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-101-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-102-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-103-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2428-104-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables packed with SmartAssembly 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1640-8-0x0000000005340000-0x000000000534C000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

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:

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

Processes:

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe

description	pid	process	target process
PID 1640 set thread context of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe

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

Processes:

schtasks.exe

pid process

2500 schtasks.exe

pid	process
2500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exepowershell.exepowershell.exe

pid	process
1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
1448	powershell.exe
1448	powershell.exe
1344	powershell.exe
1344	powershell.exe
1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
1344	powershell.exe
1448	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vbc.exe

pid process

2428 vbc.exe

pid	process
2428	vbc.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
Token: SeDebugPrivilege	1448	powershell.exe
Token: SeDebugPrivilege	1344	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe

description	pid	process	target process
PID 1640 wrote to memory of 1448	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 1448	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 1448	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 1344	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 1344	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 1344	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	powershell.exe
PID 1640 wrote to memory of 2500	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	schtasks.exe
PID 1640 wrote to memory of 2500	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	schtasks.exe
PID 1640 wrote to memory of 2500	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	schtasks.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe
PID 1640 wrote to memory of 2428	1640	e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe
"C:\Users\Admin\AppData\Local\Temp\e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1448

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UlvywtFnmZtH.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1344

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UlvywtFnmZtH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5EE9.tmp"
2⤵
- Creates scheduled task(s)
PID:2500

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:2428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
7008c6a36730ded79c6aeda9f61c627e

SHA1
fda4203e62ca898bf769689722c32b0fba670736

SHA256
df9acd7fb4fb83744a9b9274ceebc0b330fe954861bbf87128f6507fe8aac8d7

SHA512
a4637baa1581336964827387323044bfb3fd78e69eb8cfc64a8d61d9ab69c815520a845be672a40f5bab10aac4f9d01ef9029db6501b0dd2ba5b813627523f04

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_czlqlnqj.mxi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5EE9.tmp

Filesize
1KB

MD5
5a00f1a1722a433331edc591ffbb04e9

SHA1
2f97922ccd935cf7a4a0607a422b8aa2bc9f7462

SHA256
b28a6bef9c909be8b106c732a96a5ef80ff51da4949e7185ef9ec4d8e0967e78

SHA512
c6af511b36323cce1ff309aeeae0383630c837edd7d2f86bb937f7fe95d49294db6e0cfce2c29e59afe32b5298f1b382251166b8ad5887dbccba17eec9bd3874

Download Submit
memory/1344-86-0x00000000072E0000-0x00000000072EA000-memory.dmp

Filesize
40KB

Download
memory/1344-30-0x0000000005A10000-0x0000000005A76000-memory.dmp

Filesize
408KB

Download
memory/1344-54-0x0000000005F50000-0x0000000005F6E000-memory.dmp

Filesize
120KB

Download
memory/1344-99-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1344-55-0x0000000005F80000-0x0000000005FCC000-memory.dmp

Filesize
304KB

Download
memory/1344-92-0x0000000007590000-0x0000000007598000-memory.dmp

Filesize
32KB

Download
memory/1344-91-0x00000000075B0000-0x00000000075CA000-memory.dmp

Filesize
104KB

Download
memory/1344-88-0x0000000007470000-0x0000000007481000-memory.dmp

Filesize
68KB

Download
memory/1344-85-0x0000000007270000-0x000000000728A000-memory.dmp

Filesize
104KB

Download
memory/1344-77-0x00000000064F0000-0x000000000650E000-memory.dmp

Filesize
120KB

Download
memory/1344-83-0x00000000027E0000-0x00000000027F0000-memory.dmp

Filesize
64KB

Download
memory/1344-21-0x00000000027E0000-0x00000000027F0000-memory.dmp

Filesize
64KB

Download
memory/1344-58-0x0000000073E50000-0x0000000073E9C000-memory.dmp

Filesize
304KB

Download
memory/1344-19-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1344-56-0x0000000006510000-0x0000000006542000-memory.dmp

Filesize
200KB

Download
memory/1344-57-0x000000007EFD0000-0x000000007EFE0000-memory.dmp

Filesize
64KB

Download
memory/1448-87-0x0000000007700000-0x0000000007796000-memory.dmp

Filesize
600KB

Download
memory/1448-14-0x0000000004B90000-0x0000000004BC6000-memory.dmp

Filesize
216KB

Download
memory/1448-43-0x0000000005D60000-0x00000000060B4000-memory.dmp

Filesize
3.3MB

Download
memory/1448-98-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1448-90-0x00000000076C0000-0x00000000076D4000-memory.dmp

Filesize
80KB

Download
memory/1448-89-0x00000000076B0000-0x00000000076BE000-memory.dmp

Filesize
56KB

Download
memory/1448-16-0x0000000004C40000-0x0000000004C50000-memory.dmp

Filesize
64KB

Download
memory/1448-84-0x0000000007AC0000-0x000000000813A000-memory.dmp

Filesize
6.5MB

Download
memory/1448-23-0x00000000059B0000-0x0000000005A16000-memory.dmp

Filesize
408KB

Download
memory/1448-15-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1448-17-0x0000000005280000-0x00000000058A8000-memory.dmp

Filesize
6.2MB

Download
memory/1448-79-0x0000000004C40000-0x0000000004C50000-memory.dmp

Filesize
64KB

Download
memory/1448-18-0x0000000004C40000-0x0000000004C50000-memory.dmp

Filesize
64KB

Download
memory/1448-82-0x0000000007350000-0x00000000073F3000-memory.dmp

Filesize
652KB

Download
memory/1448-80-0x0000000004C40000-0x0000000004C50000-memory.dmp

Filesize
64KB

Download
memory/1448-22-0x0000000005180000-0x00000000051A2000-memory.dmp

Filesize
136KB

Download
memory/1448-59-0x000000007F240000-0x000000007F250000-memory.dmp

Filesize
64KB

Download
memory/1448-60-0x0000000073E50000-0x0000000073E9C000-memory.dmp

Filesize
304KB

Download
memory/1640-48-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1640-7-0x0000000005290000-0x00000000052A2000-memory.dmp

Filesize
72KB

Download
memory/1640-8-0x0000000005340000-0x000000000534C000-memory.dmp

Filesize
48KB

Download
memory/1640-6-0x0000000005360000-0x00000000053FC000-memory.dmp

Filesize
624KB

Download
memory/1640-1-0x0000000000520000-0x0000000000616000-memory.dmp

Filesize
984KB

Download
memory/1640-2-0x00000000055B0000-0x0000000005B54000-memory.dmp

Filesize
5.6MB

Download
memory/1640-4-0x0000000004FD0000-0x0000000004FE0000-memory.dmp

Filesize
64KB

Download
memory/1640-9-0x00000000065E0000-0x00000000066A0000-memory.dmp

Filesize
768KB

Download
memory/1640-0-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1640-5-0x0000000005020000-0x000000000502A000-memory.dmp

Filesize
40KB

Download
memory/1640-3-0x00000000050A0000-0x0000000005132000-memory.dmp

Filesize
584KB

Download
memory/2428-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2428-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download