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

3488 rdfghfgjkgoighjc.exe
2028 rdfghfgjkgoighjc.exe

pid	process
3488	rdfghfgjkgoighjc.exe
2028	rdfghfgjkgoighjc.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rdfghfgjkgoighjc.exed7fa6d87594ea4d8b5740d54fdc204b08f4e9439.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\""	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
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
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
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rdfghfgjkgoighjc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	pid	process	target process
PID 4940 set thread context of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 3488 set thread context of 2028	3488	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

3120 powershell.exe
3120 powershell.exe
1272 powershell.exe
1272 powershell.exe

pid	process
3120	powershell.exe
3120	powershell.exe
1272	powershell.exe
1272	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exepowershell.exerdfghfgjkgoighjc.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
Token: SeDebugPrivilege	3120	powershell.exe
Token: SeDebugPrivilege	3488	rdfghfgjkgoighjc.exe
Token: SeDebugPrivilege	1272	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rdfghfgjkgoighjc.exe

pid process

2028 rdfghfgjkgoighjc.exe

pid	process
2028	rdfghfgjkgoighjc.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exed7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exerdfghfgjkgoighjc.exe

description	pid	process	target process
PID 4940 wrote to memory of 3120	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4940 wrote to memory of 3120	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4940 wrote to memory of 3120	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	powershell.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 4940 wrote to memory of 1600	4940	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe
PID 1600 wrote to memory of 3488	1600	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 1600 wrote to memory of 3488	1600	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 1600 wrote to memory of 3488	1600	d7fa6d87594ea4d8b5740d54fdc204b08f4e9439.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 1272	3488	rdfghfgjkgoighjc.exe	powershell.exe
PID 3488 wrote to memory of 1272	3488	rdfghfgjkgoighjc.exe	powershell.exe
PID 3488 wrote to memory of 1272	3488	rdfghfgjkgoighjc.exe	powershell.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	rdfghfgjkgoighjc.exe	rdfghfgjkgoighjc.exe
PID 3488 wrote to memory of 2028	3488	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:4940

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:3120

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:1600

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:3488

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:1272

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:2028

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
7f961c6d7a5aeea33f1799eaa1a1397a

SHA1
c230ac92fc7e07fbcd9a64ff1e18c4a654840f9e

SHA256
e22ede706c3c967c9a4a02126ba598ce115f61ac19b6fe8a278810c510a0163d

SHA512
a1990a6f062153d2aeb03ff681eafb56387d5791494f5b6cbe7699cf288bf3d0615cf9e633fb6e730f41a91b177b7003c7a37ed3bb8433e1d58a5c276b4c4acb

Download Submit
C:\Users\Admin\AppData\Roaming\Zwpfblvosjv\Phecxlkxbf.exe
Filesize
7KB

MD5
b359f4af5c88b1e237db9738415b7682

SHA1
d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

SHA256
53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

SHA512
6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

Download Submit
memory/1272-150-0x0000000000000000-mapping.dmp

Download
memory/1600-143-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1600-142-0x0000000000000000-mapping.dmp

Download
memory/1600-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1600-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1600-149-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2028-155-0x0000000000000000-mapping.dmp

Download
memory/2028-158-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2028-159-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2028-160-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2028-161-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3120-139-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

Filesize
120KB

Download
memory/3120-141-0x00000000063F0000-0x000000000640A000-memory.dmp

Filesize
104KB

Download
memory/3120-140-0x0000000007510000-0x0000000007B8A000-memory.dmp

Filesize
6.5MB

Download
memory/3120-138-0x00000000059B0000-0x0000000005A16000-memory.dmp

Filesize
408KB

Download
memory/3120-137-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/3120-136-0x0000000005070000-0x0000000005698000-memory.dmp

Filesize
6.2MB

Download
memory/3120-135-0x0000000002920000-0x0000000002956000-memory.dmp

Filesize
216KB

Download
memory/3120-134-0x0000000000000000-mapping.dmp

Download
memory/3488-146-0x0000000000000000-mapping.dmp

Download
memory/4940-132-0x0000000000550000-0x0000000000558000-memory.dmp

Filesize
32KB

Download
memory/4940-133-0x00000000076A0000-0x00000000076C2000-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