remcos | 53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

General

Target

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Size

7KB
MD5

b359f4af5c88b1e237db9738415b7682
SHA1

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439
SHA256

53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd
SHA512

6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb
SSDEEP

96:xtEsKVeCVIP7bLp8LAn5c8aY1ej/kKV+J2qzNt:xUVVIP7bLrEOejcKYx

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

194.180.49.17:28282

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
rdfghfgjkgoighjc.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-PC1DJ2
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

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exed7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	rdfghfgjkgoighjc.exe

Executes dropped EXE 2 IoCs

Processes:

rdfghfgjkgoighjc.exerdfghfgjkgoighjc.exe

pid process

1088 rdfghfgjkgoighjc.exe
3708 rdfghfgjkgoighjc.exe

pid	process
1088	rdfghfgjkgoighjc.exe
3708	rdfghfgjkgoighjc.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exed7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	rdfghfgjkgoighjc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Phecxlkxbf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zwpfblvosjv\\Phecxlkxbf.exe\""	rdfghfgjkgoighjc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\rdfghfgjkgoighjc.exe\""	rdfghfgjkgoighjc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	pid	process	target process
PID 4700 set thread context of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 1088 set thread context of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

1376 powershell.exe
1376 powershell.exe
2732 powershell.exe
2732 powershell.exe

pid	process
1376	powershell.exe
1376	powershell.exe
2732	powershell.exe
2732	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exepowershell.exerdfghfgjkgoighjc.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Token: SeDebugPrivilege	1376	powershell.exe
Token: SeDebugPrivilege	1088	rdfghfgjkgoighjc.exe
Token: SeDebugPrivilege	2732	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rdfghfgjkgoighjc.exe

pid process

3708 rdfghfgjkgoighjc.exe

pid	process
3708	rdfghfgjkgoighjc.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exed7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	pid	process	target process
PID 4700 wrote to memory of 1376	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4700 wrote to memory of 1376	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4700 wrote to memory of 1376	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4700 wrote to memory of 3540	4700	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 3540 wrote to memory of 1088	3540	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 3540 wrote to memory of 1088	3540	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 3540 wrote to memory of 1088	3540	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 2732	1088	rdfghfgjkgoighjc.exe	powershell.exe
PID 1088 wrote to memory of 2732	1088	rdfghfgjkgoighjc.exe	powershell.exe
PID 1088 wrote to memory of 2732	1088	rdfghfgjkgoighjc.exe	powershell.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 1088 wrote to memory of 3708	1088	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe

C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
"C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1376

C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
C:\Users\Admin\AppData\Local\Temp\d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3540

C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
"C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2732

C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:3708

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
1KB

MD5
6195a91754effb4df74dbc72cdf4f7a6

SHA1
aba262f5726c6d77659fe0d3195e36a85046b427

SHA256
3254495a5513b37a2686a876d0040275414699e7ce760e7b5ee05e41a54b96f5

SHA512
ed723d15de267390dc93263538428e2c881be3494c996a810616b470d6df7d5acfcc8725687d5c50319ebef45caef44f769bfc32e0dc3abd249dacff4a12cc89

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Filesize
53KB

MD5
06ad34f9739c5159b4d92d702545bd49

SHA1
9152a0d4f153f3f40f7e606be75f81b582ee0c17

SHA256
474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

SHA512
c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
16KB

MD5
0dcd898c2542f06eb89bf1a38450012c

SHA1
f58313beaeb2d843d05029dcf062315adc793814

SHA256
d16ba5714d260f3f979530a07a46e1c949e0aec0aecb8cfabba23e51067574e0

SHA512
7f2a12302fcf85a588e63cc5ba0a5e78e4958bbd94c17d9347392b2723e8fdbd4dd664ca646ddc9d67b70d64b8ff02ec5bc6663cb42523c988793bb6644a019c

Download Submit
C:\Users\Admin\AppData\Roaming\Zwpfblvosjv\Phecxlkxbf.exe
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1088-146-0x0000000000000000-mapping.dmp

Download
memory/1376-137-0x0000000005F10000-0x0000000005F76000-memory.dmp

Filesize
408KB

Download
memory/1376-138-0x0000000006070000-0x00000000060D6000-memory.dmp

Filesize
408KB

Download
memory/1376-139-0x00000000066C0000-0x00000000066DE000-memory.dmp

Filesize
120KB

Download
memory/1376-140-0x0000000007D10000-0x000000000838A000-memory.dmp

Filesize
6.5MB

Download
memory/1376-141-0x0000000006B60000-0x0000000006B7A000-memory.dmp

Filesize
104KB

Download
memory/1376-134-0x0000000000000000-mapping.dmp

Download
memory/1376-136-0x0000000005870000-0x0000000005E98000-memory.dmp

Filesize
6.2MB

Download
memory/1376-135-0x0000000005110000-0x0000000005146000-memory.dmp

Filesize
216KB

Download
memory/2732-150-0x0000000000000000-mapping.dmp

Download
memory/3540-149-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3540-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3540-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3540-143-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3540-142-0x0000000000000000-mapping.dmp

Download
memory/3708-155-0x0000000000000000-mapping.dmp

Download
memory/3708-158-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3708-159-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3708-160-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3708-161-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4700-132-0x0000000000A40000-0x0000000000A48000-memory.dmp

Filesize
32KB

Download
memory/4700-133-0x0000000007C90000-0x0000000007CB2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads