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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe

Executes dropped EXE 2 IoCs

pid	Process
4772	AboutSettingsHandlers.exe
3940	AboutSettingsHandlers.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4984-16-0x0000000000CB0000-0x0000000000E39000-memory.dmp	autoit_exe
behavioral2/memory/4984-19-0x0000000000CB0000-0x0000000000E39000-memory.dmp	autoit_exe
behavioral2/memory/4984-22-0x0000000000CB0000-0x0000000000E39000-memory.dmp	autoit_exe
behavioral2/memory/4772-41-0x00000000000C0000-0x0000000000249000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4984 set thread context of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4772 set thread context of 3940	4772	AboutSettingsHandlers.exe	110

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
4832	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4792	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4984 wrote to memory of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4984 wrote to memory of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4984 wrote to memory of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4984 wrote to memory of 4792	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	92
PID 4984 wrote to memory of 4832	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	98
PID 4984 wrote to memory of 4832	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	98
PID 4984 wrote to memory of 4832	4984	f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe	98
PID 4772 wrote to memory of 3940	4772	AboutSettingsHandlers.exe	110
PID 4772 wrote to memory of 3940	4772	AboutSettingsHandlers.exe	110
PID 4772 wrote to memory of 3940	4772	AboutSettingsHandlers.exe	110
PID 4772 wrote to memory of 3940	4772	AboutSettingsHandlers.exe	110
PID 4772 wrote to memory of 3940	4772	AboutSettingsHandlers.exe	110

C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe
"C:\Users\Admin\AppData\Local\Temp\f980c5e3f52ee0335be8e27bad38769a503d9989ce1965c5f54074fdb7252833.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4984
- 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:4792
- 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:4832

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:3940

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

Query Registry

1

T1012

System Information Discovery

2

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
f42f93ddfe31de0e02464df5b2ecab40

SHA1
b4bb7f7953699247c17c50d26a7d65aaff1634e4

SHA256
20cba792ddd793d853c6b2b287654905427190e4812eac23ffd5189136a4e43b

SHA512
8c95befab0baf628ca92e468c782bd5d37995c41889ab9a490b738f1444fad4176712f2f460f74c71cea38a7f7a93850f62c517787da2b511233410f1f1def1d

Download Submit
memory/4772-41-0x00000000000C0000-0x0000000000249000-memory.dmp

Filesize
1.5MB

Download
memory/4772-39-0x0000000001250000-0x0000000001253000-memory.dmp

Filesize
12KB

Download
memory/4772-28-0x0000000001250000-0x0000000001253000-memory.dmp

Filesize
12KB

Download
memory/4772-26-0x00000000000C0000-0x0000000000249000-memory.dmp

Filesize
1.5MB

Download
memory/4792-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4792-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4792-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4792-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4984-15-0x0000000000BB0000-0x0000000000BB3000-memory.dmp

Filesize
12KB

Download
memory/4984-16-0x0000000000CB0000-0x0000000000E39000-memory.dmp

Filesize
1.5MB

Download
memory/4984-19-0x0000000000CB0000-0x0000000000E39000-memory.dmp

Filesize
1.5MB

Download
memory/4984-22-0x0000000000CB0000-0x0000000000E39000-memory.dmp

Filesize
1.5MB

Download
memory/4984-0-0x0000000000CB0000-0x0000000000E39000-memory.dmp

Filesize
1.5MB

Download
memory/4984-2-0x0000000000C80000-0x0000000000C81000-memory.dmp

Filesize
4KB

Download
memory/4984-1-0x0000000000BB0000-0x0000000000BB3000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads