remcos | 2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39

General

Target
2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
Size 483KB
Sample240606-23rhtadc81
SHA256 2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39
MD5 57fa99df65d98033d06fbc7444296f41
SHA1 72e8d5491f85b7b932f82cd3d29b30baad265596
SHA512 17a896f693d06f13affeca11bb4e2ee26db70e9cf4bf8e73a2424582389325fbd20099f459b5bfe8e697a430896d097ca38c8d999a78bf69d20ba2b75cffdeb1
SSDEEP 6144:gXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cNR5Gv:gX7tPMK8ctGe4Dzl4h2QnuPs/Zswcv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

newpage44.mywire.org:5010

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
skype.exe
copy_folder
skype
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%WinDir%\System32
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-RKZKPL
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat 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-1-5-21-1687926120-3022217735-1146543763-1000\Control Panel\International\Geo\Nation	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe

Deletes itself 1 IoCs

pid	Process
4144	skype.exe

Executes dropped EXE 1 IoCs

pid	Process
4144	skype.exe

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-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-RKZKPL = "\"C:\\Windows\\SysWOW64\\skype\\skype.exe\""	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-RKZKPL = "\"C:\\Windows\\SysWOW64\\skype\\skype.exe\""	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-RKZKPL = "\"C:\\Windows\\SysWOW64\\skype\\skype.exe\""	skype.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-RKZKPL = "\"C:\\Windows\\SysWOW64\\skype\\skype.exe\""	skype.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\skype\skype.exe	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
File opened for modification	C:\Windows\SysWOW64\skype\skype.exe	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
File opened for modification	C:\Windows\SysWOW64\skype	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4144 set thread context of 164	4144	skype.exe	74

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4144	skype.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4144	skype.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 4144	3484	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe	73
PID 3484 wrote to memory of 4144	3484	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe	73
PID 3484 wrote to memory of 4144	3484	2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe	73
PID 4144 wrote to memory of 164	4144	skype.exe	74
PID 4144 wrote to memory of 164	4144	skype.exe	74
PID 4144 wrote to memory of 164	4144	skype.exe	74
PID 4144 wrote to memory of 164	4144	skype.exe	74

C:\Users\Admin\AppData\Local\Temp\2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe
"C:\Users\Admin\AppData\Local\Temp\2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\skype\skype.exe
  "C:\Windows\SysWOW64\skype\skype.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:164

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 8ed21e18743ec0436541de7a37f25fbdf83fa1842a373e1ef33c7fb5cb6ac31e
MD5 dd00cabce14f342048f318105d4298e3
SHA1 fee1e6700bd846152b2930bba1492fa61bb4cd44
SHA512 c9efc56a24e6e6aed3adaa80e03c2a793adf1fcfb9a4509b257984af2431d45b88f96535d817a55af5e83dd3617c1163a6913e51b58f03a8a4b1d3f7ade5ec25
MD5 SHA1 SHA512

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skype.exe

Path C:\Windows\SysWOW64\skype\skype.exe
Size 483KB
SHA256 2d2fc31193d9baaf66df6f4de14bea1ee0b002e29ca58299f25822c887fd6b39
MD5 57fa99df65d98033d06fbc7444296f41
SHA1 72e8d5491f85b7b932f82cd3d29b30baad265596
SHA512 17a896f693d06f13affeca11bb4e2ee26db70e9cf4bf8e73a2424582389325fbd20099f459b5bfe8e697a430896d097ca38c8d999a78bf69d20ba2b75cffdeb1
SSDEEP 6144:gXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cNR5Gv:gX7tPMK8ctGe4Dzl4h2QnuPs/Zswcv
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/164-30-0x0000000000AC0000-0x0000000000B42000-memory.dmp

Download

memory/164-33-0x0000000000AC0000-0x0000000000B42000-memory.dmp

Download

memory/164-34-0x0000000000AC0000-0x0000000000B42000-memory.dmp

Download

memory/164-35-0x0000000000AC0000-0x0000000000B42000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads