remcos | 33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846

General

Target

33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe
Size

96KB
MD5

c8dafe143fe1d81ae6a3c0cd4724b272
SHA1

aff9845e362bc990649ea5ee2e8893f7b3c0d507
SHA256

33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846
SHA512

e3f5d2abb7740cc17629f212cbfa86132a0844dbd0933a7549bac7887dd4021d5ae68c0edab26a41d32172d958e796c8a10a31058c8eb5f63585c78a56381a7e
SSDEEP

1536:L7br3qpq4YvkzsdDL6e0Twjc5sh2RP2g+gy4s3VaCZKpA5KqBjk6xvWHM/6NFSTx:LPrapq4YMeDLJ0Mush2RPVNLs33KpgjV

Score

10^/10

remcos host-xmen credential_access discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7.4 Pro

Botnet

Host-Xmen

C2

5.133.15.4:1977

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
adobe.exe
copy_folder
Adobe
delete_file
true
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
X-Men-Z10Y4G
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%Temp%
screenshot_time
3
startup_value
Adobe
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
outlook;bank;payment;wire;transfer;password;recover;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	adobe.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 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\adobe.exe\""	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\adobe.exe\""	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\adobe.exe\""	adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\adobe.exe\""	adobe.exe

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	adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1336	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1336	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5036	adobe.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5036	adobe.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 1228	2876	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe	81
PID 2876 wrote to memory of 1228	2876	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe	81
PID 2876 wrote to memory of 1228	2876	33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe	81
PID 1228 wrote to memory of 1336	1228	cmd.exe	83
PID 1228 wrote to memory of 1336	1228	cmd.exe	83
PID 1228 wrote to memory of 1336	1228	cmd.exe	83
PID 1228 wrote to memory of 5036	1228	cmd.exe	84
PID 1228 wrote to memory of 5036	1228	cmd.exe	84
PID 1228 wrote to memory of 5036	1228	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe
"C:\Users\Admin\AppData\Local\Temp\33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846_unpacked.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1228
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1336
- - C:\Users\Admin\AppData\Roaming\Adobe\adobe.exe
    "C:\Users\Admin\AppData\Roaming\Adobe\adobe.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:5036

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
216B

MD5
0c913f6918745021dc5d598ef994bb15

SHA1
e2503257f70c7254bb6d8cdd226c3adf2e6a7d78

SHA256
fda72beabcc5287035a662e70cdfb526a55994edce103840e16f3b6116c4ac4a

SHA512
ca1f94713570617034f72eaf2505b6a69c3af234971cc4a5592181b8a331c5c2838d52e8f0aad2231bd317d54037b1808f2fad18a646cbb1f05cbb018840bfc1

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\adobe.exe

Filesize
96KB

MD5
c8dafe143fe1d81ae6a3c0cd4724b272

SHA1
aff9845e362bc990649ea5ee2e8893f7b3c0d507

SHA256
33ab798aff2e9e3e550354ed16de0430888149747ca068cf793486b18f566846

SHA512
e3f5d2abb7740cc17629f212cbfa86132a0844dbd0933a7549bac7887dd4021d5ae68c0edab26a41d32172d958e796c8a10a31058c8eb5f63585c78a56381a7e

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads