remcos | dbb91efc31fbf89d7600d6ccf15e1e2febe432b3d757adce1269582611680f6c

General

Target

14b8fe3379ea539ff8351ebbd4420330.exe
Size

2.0MB
MD5

14b8fe3379ea539ff8351ebbd4420330
SHA1

df611ed161ffc9a59a021929d9281d5af7d00011
SHA256

dbb91efc31fbf89d7600d6ccf15e1e2febe432b3d757adce1269582611680f6c
SHA512

f25d06328ee7bb33145b2e5ab8b0fb029e1913f8c6f08af8c8d449a4405849c3aee543da48721be8af18629132cf1aca0820448a73a4daef68de0f599aa29bb1
SSDEEP

24576:AD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4+n:Ap7E+QrFUBgq2C

Score

10^/10

remcos host 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

Executes dropped EXE 2 IoCs

pid	Process
2888	sbietrcl.exe
2468	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2080	14b8fe3379ea539ff8351ebbd4420330.exe

Reads user/profile data of web browsers 2 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

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	14b8fe3379ea539ff8351ebbd4420330.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 2468	2888	sbietrcl.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2080	14b8fe3379ea539ff8351ebbd4420330.exe
2888	sbietrcl.exe
2888	sbietrcl.exe
2888	sbietrcl.exe
2888	sbietrcl.exe
2888	sbietrcl.exe
2888	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	14b8fe3379ea539ff8351ebbd4420330.exe
Token: SeDebugPrivilege	2888	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2468	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2888	2080	14b8fe3379ea539ff8351ebbd4420330.exe	28
PID 2080 wrote to memory of 2888	2080	14b8fe3379ea539ff8351ebbd4420330.exe	28
PID 2080 wrote to memory of 2888	2080	14b8fe3379ea539ff8351ebbd4420330.exe	28
PID 2080 wrote to memory of 2888	2080	14b8fe3379ea539ff8351ebbd4420330.exe	28
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29
PID 2888 wrote to memory of 2468	2888	sbietrcl.exe	29

C:\Users\Admin\AppData\Local\Temp\14b8fe3379ea539ff8351ebbd4420330.exe
"C:\Users\Admin\AppData\Local\Temp\14b8fe3379ea539ff8351ebbd4420330.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2080
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:2468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
344B

MD5
7559cf9d24a051c9454ed9db0b0def3e

SHA1
2a255a117eead18ff7a75950ba0b1afdbe0f74f4

SHA256
a9d5d5a3c9a9573ddce807e93a498cfbeeb9b2c2b2e15cbcb9a20e01813d5959

SHA512
7dc9ba3a7ecc45224349901df8754c70dba35dd42070e815552bf2c87f218731f4fbd901dd40133542beed7d78da3d0fcab2d1a3e41fd65687a93d8d1dbded40

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3553.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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

Filesize
2.0MB

MD5
e598de3d4bd2f97b09ff61522df9e46c

SHA1
00212c209c547d807aea9cd7989ef06e9a7fe12c

SHA256
09280d148102cdf5ade6c54e0a8c11075017c19347ff3ff9f8a61c8acb42e7eb

SHA512
0ffde8b7039aacd5cc9ddb3a13f252dc528e774063e000fadb727c6c242f45f8ca8ef89c62f3e53c00c0d8d466d10f89cdfc62cc918494e55d5fbcddcbc6906a

Download Submit
memory/2080-1-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2080-11-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2080-12-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2080-30-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2080-0-0x0000000074661000-0x0000000074662000-memory.dmp

Filesize
4KB

Download
memory/2468-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2468-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-53-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2468-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2888-32-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2888-31-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2888-42-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2888-60-0x0000000074660000-0x0000000074C0B000-memory.dmp

Filesize
5.7MB

Download
memory/2888-41-0x0000000074660000-0x0000000074C0B000-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