General
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Target
Remcos v4.9.3 Pro.exe
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Size
467KB
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Sample
231130-v9xvvafc8s
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MD5
ccb5f97be3daefc9cdeaff2aec1ad323
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SHA1
3b561e66a88eb6072a363c1b9cc52d0a679c20e6
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SHA256
f7284ed876aebbf3407d50fd6acdbd11adb75c31550c3034c1600f4eb4e61043
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SHA512
c6716462e91b02b561ebe89418c3a36eea7dea6924ff6483cef6c834512123258706924cb8ec07040325522d41fe329659758b01f69bf6a17805599344f01180
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SSDEEP
6144:sXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cNF5Gv:sX7tPMK8ctGe4Dzl4h2QnuPs/Zs0cv
Behavioral task
behavioral1
Sample
Remcos v4.9.3 Pro.exe
Resource
win7-20231023-en
Malware Config
Extracted
remcos
nulled
essagbs.ddns.net:2404
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
svhost.exe
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
true
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install_path
%WinDir%
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
logs
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mouse_option
false
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mutex
ewaewefsefsefdseadwadf-21RLZF
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Targets
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Target
Remcos v4.9.3 Pro.exe
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Size
467KB
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MD5
ccb5f97be3daefc9cdeaff2aec1ad323
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SHA1
3b561e66a88eb6072a363c1b9cc52d0a679c20e6
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SHA256
f7284ed876aebbf3407d50fd6acdbd11adb75c31550c3034c1600f4eb4e61043
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SHA512
c6716462e91b02b561ebe89418c3a36eea7dea6924ff6483cef6c834512123258706924cb8ec07040325522d41fe329659758b01f69bf6a17805599344f01180
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SSDEEP
6144:sXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cNF5Gv:sX7tPMK8ctGe4Dzl4h2QnuPs/Zs0cv
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Adds policy Run key to start application
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Adds Run key to start application
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4