remcos | 16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 01:14

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General

Target

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
Size

884KB
MD5

cb60f9802b22337e3182ff3045e848fa
SHA1

b3d29c2524c103e786e2a73c3dfdbe37b8e0ee28
SHA256

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce
SHA512

bb7a9e679caa06f904eff2b4f08006d2cbeae03dfaa9e7a6b90e667040bedee607c8d147a16b56d5ecae99a11e0e9f6fdafc436f48867e12022198020f749be0
SSDEEP

24576:6OKGhEYdA9mPUiGZHQZcrOuP115OI7BN1:dKGhEYdAMfhSd155B

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

91.92.244.17:2707

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-ZBS4C6
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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2612-36-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-38-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-49-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-51-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-54-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-99-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-100-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-101-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-102-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-103-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-104-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-105-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-106-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-107-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-108-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-109-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2612-110-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables packed with SmartAssembly 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4560-8-0x00000000055F0000-0x00000000055FC000-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:

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

Processes:

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe

description	pid	process	target process
PID 4560 set thread context of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.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

3220 schtasks.exe

pid	process
3220	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exepowershell.exepowershell.exe

pid	process
4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
3632	powershell.exe
3632	powershell.exe
1384	powershell.exe
1384	powershell.exe
4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
1384	powershell.exe
3632	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeDebugPrivilege	3632	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe

description	pid	process	target process
PID 4560 wrote to memory of 3632	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 3632	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 3632	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 1384	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 1384	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 1384	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	powershell.exe
PID 4560 wrote to memory of 3220	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	schtasks.exe
PID 4560 wrote to memory of 3220	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	schtasks.exe
PID 4560 wrote to memory of 3220	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	schtasks.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe
PID 4560 wrote to memory of 2612	4560	16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe
"C:\Users\Admin\AppData\Local\Temp\16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4560

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\16e9bc6afb3e487749ffed54bace65bb58dd5257c66a0baef767d371eda437ce.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3632

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xEAqrgXRK.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1384

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xEAqrgXRK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC13D.tmp"
2⤵
- Creates scheduled task(s)
PID:3220

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
PID:2612

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=2092 --field-trial-handle=2288,i,10301911031503898037,2997280636231771547,262144 --variations-seed-version /prefetch:8
1⤵
PID:4568

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
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

Filesize
18KB

MD5
f56fd1e1f237be469bd4bd69587516e4

SHA1
b75e2c24c8b3a4cbd6451c0b380b11bcaa49874e

SHA256
31173bbbfc4b87019efdd18a9346d0e8491fac356987f8a7035f11cd363e820c

SHA512
26ae3ba40cc8e1e758d72a912650cfcadd5b229368c34878b1f9e00addc2e42d52b683b6ed229c107201be11797af70e80ed6851b11de4171bbf9a6eff5d5c1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0sbj2cs5.x5y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC13D.tmp

Filesize
1KB

MD5
796ec2a1f21afdbbb607778305a88a66

SHA1
a738a8d51d50b5b012708c80f6b9c385969eaf4a

SHA256
b94c036964e8ad25ec8300e6189dcf49604f39c255b68231f9875137fe517b0e

SHA512
a97fbb6751a0b47a5806d946c97ea456e019ce087c0915bca88ef6b80641358f9c6bda0edd95c3976293e1ca730b503d69d70b3b9b6061e2b66ba80dfac499fc

Download Submit
memory/1384-56-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/1384-26-0x0000000005EF0000-0x0000000005F56000-memory.dmp

Filesize
408KB

Download
memory/1384-82-0x0000000007930000-0x00000000079D3000-memory.dmp

Filesize
652KB

Download
memory/1384-60-0x00000000078F0000-0x0000000007922000-memory.dmp

Filesize
200KB

Download
memory/1384-58-0x000000007FA30000-0x000000007FA40000-memory.dmp

Filesize
64KB

Download
memory/1384-22-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/1384-83-0x0000000008060000-0x00000000086DA000-memory.dmp

Filesize
6.5MB

Download
memory/1384-85-0x0000000007A90000-0x0000000007A9A000-memory.dmp

Filesize
40KB

Download
memory/1384-55-0x0000000006C70000-0x0000000006CBC000-memory.dmp

Filesize
304KB

Download
memory/1384-18-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1384-86-0x0000000007CA0000-0x0000000007D36000-memory.dmp

Filesize
600KB

Download
memory/1384-19-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/1384-52-0x0000000006700000-0x000000000671E000-memory.dmp

Filesize
120KB

Download
memory/1384-37-0x00000000060F0000-0x0000000006444000-memory.dmp

Filesize
3.3MB

Download
memory/1384-25-0x0000000005E80000-0x0000000005EE6000-memory.dmp

Filesize
408KB

Download
memory/1384-91-0x0000000007D40000-0x0000000007D48000-memory.dmp

Filesize
32KB

Download
memory/1384-98-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1384-72-0x0000000075590000-0x00000000755DC000-memory.dmp

Filesize
304KB

Download
memory/2612-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2612-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3632-24-0x0000000005520000-0x0000000005542000-memory.dmp

Filesize
136KB

Download
memory/3632-21-0x0000000002B10000-0x0000000002B20000-memory.dmp

Filesize
64KB

Download
memory/3632-61-0x0000000075590000-0x00000000755DC000-memory.dmp

Filesize
304KB

Download
memory/3632-57-0x0000000002B10000-0x0000000002B20000-memory.dmp

Filesize
64KB

Download
memory/3632-84-0x00000000077F0000-0x000000000780A000-memory.dmp

Filesize
104KB

Download
memory/3632-15-0x0000000004F20000-0x0000000004F56000-memory.dmp

Filesize
216KB

Download
memory/3632-16-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3632-87-0x00000000079F0000-0x0000000007A01000-memory.dmp

Filesize
68KB

Download
memory/3632-88-0x0000000007A20000-0x0000000007A2E000-memory.dmp

Filesize
56KB

Download
memory/3632-89-0x0000000007A30000-0x0000000007A44000-memory.dmp

Filesize
80KB

Download
memory/3632-90-0x0000000007B30000-0x0000000007B4A000-memory.dmp

Filesize
104KB

Download
memory/3632-17-0x0000000005590000-0x0000000005BB8000-memory.dmp

Filesize
6.2MB

Download
memory/3632-97-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3632-71-0x0000000007450000-0x000000000746E000-memory.dmp

Filesize
120KB

Download
memory/3632-59-0x000000007FA90000-0x000000007FAA0000-memory.dmp

Filesize
64KB

Download
memory/3632-20-0x0000000002B10000-0x0000000002B20000-memory.dmp

Filesize
64KB

Download
memory/4560-4-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4560-0-0x00000000004E0000-0x00000000005C4000-memory.dmp

Filesize
912KB

Download
memory/4560-5-0x0000000005170000-0x000000000517A000-memory.dmp

Filesize
40KB

Download
memory/4560-2-0x0000000005600000-0x0000000005BA4000-memory.dmp

Filesize
5.6MB

Download
memory/4560-3-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/4560-53-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4560-1-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4560-10-0x0000000008A00000-0x0000000008A9C000-memory.dmp

Filesize
624KB

Download
memory/4560-9-0x00000000062F0000-0x00000000063B0000-memory.dmp

Filesize
768KB

Download
memory/4560-8-0x00000000055F0000-0x00000000055FC000-memory.dmp

Filesize
48KB

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memory/4560-7-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

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memory/4560-6-0x0000000005330000-0x0000000005344000-memory.dmp

Filesize
80KB

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