remcos | 49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7

General

Target

49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
Size

1.9MB
MD5

24ccfe6f230a958a95303e9192616fd8
SHA1

17268748c689d54969ee4d1b643c84fc1f5efd50
SHA256

49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7
SHA512

c8d3b4cc7cac9b20d2cd998542c4a69c83ccfea989db4f2c0cec9e503c8d2cfb5ba79b6116a26044e07817769d5d1be03a593d9fb9d85f48271ca67851710171
SSDEEP

24576:7D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jI:7F+QrFUBgq25eKu6jI

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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
Remcos family
remcos

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
2168	sbietrcl.exe
1712	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2168 set thread context of 1712	2168	sbietrcl.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
2168	sbietrcl.exe
2168	sbietrcl.exe
2168	sbietrcl.exe
2168	sbietrcl.exe
2168	sbietrcl.exe
2168	sbietrcl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2160	explorer.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
Token: SeDebugPrivilege	2168	sbietrcl.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe
Token: SeShutdownPrivilege	2160	explorer.exe

Suspicious use of FindShellTrayWindow 28 IoCs

pid	Process
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe

Suspicious use of SendNotifyMessage 18 IoCs

pid	Process
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe
2160	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1712	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2168	2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe	31
PID 2256 wrote to memory of 2168	2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe	31
PID 2256 wrote to memory of 2168	2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe	31
PID 2256 wrote to memory of 2168	2256	49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe	31
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33
PID 2168 wrote to memory of 1712	2168	sbietrcl.exe	33

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe
"C:\Users\Admin\AppData\Local\Temp\49f04d381800566903c6ae06e20482e4ef7e0b127c112389af5a3717325e7cd7.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1712

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
6bbaa13808da377b34857762f5be3b5a

SHA1
cb8e803f9e17588945a5434156d9ddf7cbba8537

SHA256
f30101d63713b22bb6c289a181503c1c44132b7ef8e55d60c35d9b1e92db5a37

SHA512
84349f887453c2b6457e3fd08001c9af7108fa7aa513f8f327d78711cc8fb5e27da3fdaf88bd0b972f246ee33d93cfc716118e34b1a996f5737d62035ba7e074

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
d3c694d893ebd306539ed9aaaa29ce09

SHA1
e6b90e79deac937936b946462ca032949ceb08dc

SHA256
d0696463dec81699df35d4e6d5d086571998b2a6c91c0e7dd2749adab5a18c17

SHA512
0d0137a10bb83be29cdef8e82eba921c80d30edcb079dd168ed9d836e95bc3f632ebc1803ee2f33d7780c97a6d6e6f67b30257789ec0f8d4716920f5d552f3f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4A2C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4A3F.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4EDB.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.9MB

MD5
68851aaf7d94e1d73130092ae93479b5

SHA1
48e3c3040b37c536f2922affc77e7884aed80131

SHA256
5309c96525aa9bb7c1132657583070cd183bf5d52143cebee9fd2b6cabdfa52c

SHA512
cb9dea3d33097e03dd6c6759c26fa0439261f9f13be754f6761a93ecee7bd2a921d6bcfe1185e2bb5eb3c5d479949870cd1cc0a03e2a55355996dca61e9c1a0a

Download Submit
memory/1712-235-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-227-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1712-217-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-221-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-223-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-225-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-231-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-219-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-230-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-228-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1712-234-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2256-0-0x0000000074551000-0x0000000074552000-memory.dmp

Filesize
4KB

Download
memory/2256-2-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-185-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-216-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-1-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-198-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/2256-186-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads