remcos | 5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158

General

Target

5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Size

1.1MB
MD5

7f30e6c7d2f495fc82bd2f4c1f9055db
SHA1

f7878fdb41c01912606c4fee325e66e5af915749
SHA256

5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158
SHA512

98e5d9777ca949a4a3701624bf1bdd0e720ff7cb861cc471aeb970505b59aad0b8e451a44ea1ba8d6f04e84118a3a64207777890d69b8da97a99ba5f30a10fef
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FP:LTgdZOcuUL3xAx/8b2S7Z0J

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

C2

remcoss.onmypc.org:3765

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
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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 1 IoCs

pid	Process
2840	AboutSettingsHandlers.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2380-21-0x0000000001380000-0x0000000001509000-memory.dmp	autoit_exe
behavioral1/memory/2380-26-0x0000000001380000-0x0000000001509000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30

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 4 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	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2820	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2396	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2396	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	30
PID 2380 wrote to memory of 2820	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	32
PID 2380 wrote to memory of 2820	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	32
PID 2380 wrote to memory of 2820	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	32
PID 2380 wrote to memory of 2820	2380	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	32
PID 2708 wrote to memory of 2840	2708	taskeng.exe	35
PID 2708 wrote to memory of 2840	2708	taskeng.exe	35
PID 2708 wrote to memory of 2840	2708	taskeng.exe	35
PID 2708 wrote to memory of 2840	2708	taskeng.exe	35

C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
"C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
  "C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2396
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2820

C:\Windows\system32\taskeng.exe
taskeng.exe {E18F1D24-1333-47A3-ABD7-8FA282D2C29D} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
a126baf6d945012e2bbd77247523b337

SHA1
58706db1572b34d64250692ada782b29cfe2eec9

SHA256
024e271dd4a8ddce6e0903ddcaea2d8300e8e86d902abc276c08cc1db85933b2

SHA512
21a33f4de34ddad273c491e05d56c909df956f772f58ba1dbbd287f8008ef4b7d8a9f434f731a0d77cc43f85d6f9487638da0eb2ccfd2de216b92c6f3d4b2f11

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
be2c07b3f674bc26f1cf903d96fa6231

SHA1
e31d08403339e549961dec012d3a01d6d36ac9fa

SHA256
121f88ab90e035fc3814dd3ec92a387a37efe5e020c6ae5f05c7121850c4d327

SHA512
65244ce9839488a553c45e177a96c1dac53eeb4df8f47bd9107c95a3a856dcc22592c71aba277c20b8c6eeefb5f7e9d02ccc51893c369d44924cbc962c4c77ad

Download Submit
memory/2380-26-0x0000000001380000-0x0000000001509000-memory.dmp

Filesize
1.5MB

Download
memory/2380-19-0x0000000001120000-0x00000000012A9000-memory.dmp

Filesize
1.5MB

Download
memory/2380-1-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/2380-2-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/2380-0-0x0000000001380000-0x0000000001509000-memory.dmp

Filesize
1.5MB

Download
memory/2380-21-0x0000000001380000-0x0000000001509000-memory.dmp

Filesize
1.5MB

Download
memory/2396-14-0x00000000000B0000-0x00000000000D0000-memory.dmp

Filesize
128KB

Download
memory/2396-18-0x00000000000B0000-0x00000000000D0000-memory.dmp

Filesize
128KB

Download
memory/2396-15-0x00000000000B0000-0x00000000000D0000-memory.dmp

Filesize
128KB

Download
memory/2396-20-0x0000000001380000-0x0000000001509000-memory.dmp

Filesize
1.5MB

Download
memory/2396-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2396-3-0x00000000000B0000-0x00000000000D0000-memory.dmp

Filesize
128KB

Download
memory/2396-5-0x00000000000B0000-0x00000000000D0000-memory.dmp

Filesize
128KB

Download
memory/2840-33-0x0000000000B10000-0x0000000000C99000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads