remcos | f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833

General

Target

f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe
Size

1.1MB
MD5

2b69aaed53d8a002a8ab6d336f795a32
SHA1

60fdbf4710f0f449423a84f7362a8719639e0273
SHA256

f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833
SHA512

30cc0acd55d0e717e93de0f052aa46351eb2cfdf226c9c448862fcc63889ea988b465a50b68cdb448565945c4a31ff150a60d5afb911d89c423711f262b0217d
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Fm:LTgdZOcuUL3xAx/8b2S7Z0g

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 2 IoCs

pid	Process
2892	AboutSettingsHandlers.exe
2852	AboutSettingsHandlers.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2420-21-0x00000000011A0000-0x0000000001329000-memory.dmp	autoit_exe
behavioral1/memory/2420-26-0x00000000011A0000-0x0000000001329000-memory.dmp	autoit_exe
behavioral1/memory/2892-46-0x0000000000A20000-0x0000000000BA9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2892 set thread context of 2852	2892	AboutSettingsHandlers.exe	36

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	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.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
2200	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2524	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2524	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	31
PID 2420 wrote to memory of 2200	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	32
PID 2420 wrote to memory of 2200	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	32
PID 2420 wrote to memory of 2200	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	32
PID 2420 wrote to memory of 2200	2420	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	32
PID 2816 wrote to memory of 2892	2816	taskeng.exe	35
PID 2816 wrote to memory of 2892	2816	taskeng.exe	35
PID 2816 wrote to memory of 2892	2816	taskeng.exe	35
PID 2816 wrote to memory of 2892	2816	taskeng.exe	35
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36
PID 2892 wrote to memory of 2852	2892	AboutSettingsHandlers.exe	36

C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe
"C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe
  "C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2524
- 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:2200

C:\Windows\system32\taskeng.exe
taskeng.exe {2D9662C3-275D-44AE-BBBC-18DFDF9C422A} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2852

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
eebcce1b8ecbb9c3a4656d97864e7a3d

SHA1
e20020a08724e7cd7a12e403e4bc2141ca491ce2

SHA256
0874655082f4947c80cf0e1c6b37bcce598d6a877898674adb6121c2fa0c3c53

SHA512
5ac6c78d83e6558a5280066504fdea33dcc83fc9964da3485a7fe9cff87b2f8257053322d0703f5b4a0c40ca26765d433788c65afe67903ceb0088d90c162b6f

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

Filesize
79B

MD5
479f6ceb425592f26bfe9a4f3f272a9e

SHA1
177b04db3a30574b2b1936a28fa94d9a0dc98102

SHA256
b111e3ba7005e4528b14280c4fa17bdafff3c8b618deb5197386777088cc41a3

SHA512
294bad27579580d6bce83dfa94f25609b8cdee5ea2d946d0adeaea077c919235be4c3db1999778c9023a54f3f8a78ba108e5ee86ba83eeffccaec2ebc069d048

Download Submit
memory/2420-26-0x00000000011A0000-0x0000000001329000-memory.dmp

Filesize
1.5MB

Download
memory/2420-1-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/2420-19-0x0000000002910000-0x0000000002A99000-memory.dmp

Filesize
1.5MB

Download
memory/2420-2-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download
memory/2420-0-0x00000000011A0000-0x0000000001329000-memory.dmp

Filesize
1.5MB

Download
memory/2420-21-0x00000000011A0000-0x0000000001329000-memory.dmp

Filesize
1.5MB

Download
memory/2420-20-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/2524-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2524-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2524-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2524-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2524-18-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2524-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-40-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-43-0x0000000000A20000-0x0000000000BA9000-memory.dmp

Filesize
1.5MB

Download
memory/2892-31-0x0000000000A20000-0x0000000000BA9000-memory.dmp

Filesize
1.5MB

Download
memory/2892-46-0x0000000000A20000-0x0000000000BA9000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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