remcos | e5d28ec84e4b5f023e3f386cf7e0776850b67e2bad1299413885f3fdd757f58c

Analysis

max time kernel
140s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:18

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General

Target

e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
Size

1.7MB
MD5

acec4e3a3a6a8a6ce6aa2cd917bfb911
SHA1

87dbf1d948f71fb4b62b1c18289df01637bf76b9
SHA256

e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9
SHA512

2eecb7e1ebd091062edae5619e3850ed763432a9024a01046e63c3cfd8fef3f74f2e046e00959da67fc02aebb128bfef479600955a0153966ae84a37b3a877cc
SSDEEP

24576:hD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjom7:hp7E+QrFUBgq2v7

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

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

Executes dropped EXE 2 IoCs

pid	Process
2172	sbietrcl.exe
2052	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 2052	2172	sbietrcl.exe	31

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	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
2172	sbietrcl.exe
2172	sbietrcl.exe
2172	sbietrcl.exe
2172	sbietrcl.exe
2172	sbietrcl.exe
2172	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
Token: SeDebugPrivilege	2172	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2052	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2172	2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	30
PID 2672 wrote to memory of 2172	2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	30
PID 2672 wrote to memory of 2172	2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	30
PID 2672 wrote to memory of 2172	2672	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	30
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31
PID 2172 wrote to memory of 2052	2172	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
"C:\Users\Admin\AppData\Local\Temp\e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.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:2672
- 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:2172
- - 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:2052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

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
6205ae192e16c324fb2cd042ac84a402

SHA1
33f2dd29936e3e64e648d7e337bc5ff383808539

SHA256
ed054f71cb09552b5956cb45850a97c47a94f5bb34d61e173c09135505a58da8

SHA512
39c04291f4cf962e5d2bf1b064f110e257bd4ffad08c22cfdbb078412b95ff7e39620b37d30e4b9101585516d23667b112ff031d2a34b9db609499e4ef045d1d

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

Filesize
344B

MD5
b9a82c2bb60b69767ca3a96b2366b5ae

SHA1
08c1720d04217c54c85a19b9af7ad5abb32a2078

SHA256
03f7b54c68d8c6d1ad8166acbbffa83379328e52c2950ec532f7d7fb5a2e9e0f

SHA512
501909127a4a8b47753805c0aaaca321dc2b32e82962bd92ff49e800848859d908cbf37fc6e8d7251e6b9dd33f0553fea7cf7dcac39342ebedbcba5ef0a8374e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab1FD2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1FE5.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar21B3.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

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

Filesize
1.7MB

MD5
b17cfb41172298bfad8b93252152a359

SHA1
cabeeaae0cd7c916609c6754e13726c27cf03254

SHA256
abdd0eb62d0d7462717ead64928c4903dff091ee0726e626296b61f4b985ce2a

SHA512
18798dd9158b0d45106747ca5cc71a1f0f1545d4e3692153b9e5f7cf13fb6177053f3ec33e5cf1e0cf1a0d609b18a8360e2a8dd63bfccfc8847829f361bc0268

Download Submit
memory/2052-230-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-225-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-219-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-217-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-228-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-221-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-223-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-235-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-227-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2052-234-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2052-231-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2172-236-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2172-205-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-0-0x0000000074271000-0x0000000074272000-memory.dmp

Filesize
4KB

Download
memory/2672-185-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-1-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-204-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-184-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-197-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download