darkcomet | ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162

General

Target

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Size

2.2MB
MD5

2143e3f661a12e987a590a19c62e80e5
SHA1

178ac441bec96294ed7afcb6c11f6ba3e3143a75
SHA256

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162
SHA512

b029cf8f8c146f4f4a29cb0204f60e659a200b4589cde0842fd4b456e364ea4bc6e4c555e74c92341fdb52f9529bfb54858f6104ede4796373d5883e5e1a8fb7
SSDEEP

49152:MHNRaJsiPfkOal/74cs4CAkVAh3KLHeNjEWuRxaa995XzIGbn:MmJsmCNvYf+NjER0a95XzLn

Score

10^/10

darkcomet hf evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

darthquigon.no-ip.org:1604

Mutex

DC_MUTEX-4R4M43Q

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gNEQEuffZJHa
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1956 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1396 attrib.exe
268 attrib.exe

pid	process
1956	msdcsc.exe

pid	process
1396	attrib.exe
268	attrib.exe

Loads dropped DLL 2 IoCs

Processes:

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe

pid	process
1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.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: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1956 msdcsc.exe

pid	process
1956	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeSecurityPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeTakeOwnershipPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeLoadDriverPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeSystemProfilePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeSystemtimePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeProfSingleProcessPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeIncBasePriorityPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeCreatePagefilePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeBackupPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeRestorePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeShutdownPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeDebugPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeSystemEnvironmentPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeChangeNotifyPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeRemoteShutdownPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeUndockPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeManageVolumePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeImpersonatePrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeCreateGlobalPrivilege	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: 33	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: 34	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: 35	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
Token: SeIncreaseQuotaPrivilege	1956	msdcsc.exe
Token: SeSecurityPrivilege	1956	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1956	msdcsc.exe
Token: SeLoadDriverPrivilege	1956	msdcsc.exe
Token: SeSystemProfilePrivilege	1956	msdcsc.exe
Token: SeSystemtimePrivilege	1956	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1956	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1956	msdcsc.exe
Token: SeCreatePagefilePrivilege	1956	msdcsc.exe
Token: SeBackupPrivilege	1956	msdcsc.exe
Token: SeRestorePrivilege	1956	msdcsc.exe
Token: SeShutdownPrivilege	1956	msdcsc.exe
Token: SeDebugPrivilege	1956	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1956	msdcsc.exe
Token: SeChangeNotifyPrivilege	1956	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1956	msdcsc.exe
Token: SeUndockPrivilege	1956	msdcsc.exe
Token: SeManageVolumePrivilege	1956	msdcsc.exe
Token: SeImpersonatePrivilege	1956	msdcsc.exe
Token: SeCreateGlobalPrivilege	1956	msdcsc.exe
Token: 33	1956	msdcsc.exe
Token: 34	1956	msdcsc.exe
Token: 35	1956	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1956 msdcsc.exe

pid	process
1956	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1732 wrote to memory of 1424	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1424	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1424	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1424	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1372	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1372	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1372	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1732 wrote to memory of 1372	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	cmd.exe
PID 1424 wrote to memory of 1396	1424	cmd.exe	attrib.exe
PID 1424 wrote to memory of 1396	1424	cmd.exe	attrib.exe
PID 1424 wrote to memory of 1396	1424	cmd.exe	attrib.exe
PID 1424 wrote to memory of 1396	1424	cmd.exe	attrib.exe
PID 1372 wrote to memory of 268	1372	cmd.exe	attrib.exe
PID 1372 wrote to memory of 268	1372	cmd.exe	attrib.exe
PID 1372 wrote to memory of 268	1372	cmd.exe	attrib.exe
PID 1372 wrote to memory of 268	1372	cmd.exe	attrib.exe
PID 1732 wrote to memory of 1956	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	msdcsc.exe
PID 1732 wrote to memory of 1956	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	msdcsc.exe
PID 1732 wrote to memory of 1956	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	msdcsc.exe
PID 1732 wrote to memory of 1956	1732	ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe	msdcsc.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe
PID 1956 wrote to memory of 1944	1956	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1396 attrib.exe
268 attrib.exe

pid	process
1396	attrib.exe
268	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe
"C:\Users\Admin\AppData\Local\Temp\ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1396

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1372

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:268

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Disables RegEdit via registry modification
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
2.2MB

MD5
2143e3f661a12e987a590a19c62e80e5

SHA1
178ac441bec96294ed7afcb6c11f6ba3e3143a75

SHA256
ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162

SHA512
b029cf8f8c146f4f4a29cb0204f60e659a200b4589cde0842fd4b456e364ea4bc6e4c555e74c92341fdb52f9529bfb54858f6104ede4796373d5883e5e1a8fb7

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
2.2MB

MD5
2143e3f661a12e987a590a19c62e80e5

SHA1
178ac441bec96294ed7afcb6c11f6ba3e3143a75

SHA256
ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162

SHA512
b029cf8f8c146f4f4a29cb0204f60e659a200b4589cde0842fd4b456e364ea4bc6e4c555e74c92341fdb52f9529bfb54858f6104ede4796373d5883e5e1a8fb7

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
2.2MB

MD5
2143e3f661a12e987a590a19c62e80e5

SHA1
178ac441bec96294ed7afcb6c11f6ba3e3143a75

SHA256
ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162

SHA512
b029cf8f8c146f4f4a29cb0204f60e659a200b4589cde0842fd4b456e364ea4bc6e4c555e74c92341fdb52f9529bfb54858f6104ede4796373d5883e5e1a8fb7

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
2.2MB

MD5
2143e3f661a12e987a590a19c62e80e5

SHA1
178ac441bec96294ed7afcb6c11f6ba3e3143a75

SHA256
ca73c1e272f0634901c4bd5f0ff8942f44739eca23b653d02bae3dd87819b162

SHA512
b029cf8f8c146f4f4a29cb0204f60e659a200b4589cde0842fd4b456e364ea4bc6e4c555e74c92341fdb52f9529bfb54858f6104ede4796373d5883e5e1a8fb7

Download Submit
memory/268-60-0x0000000000000000-mapping.dmp

Download
memory/1372-56-0x0000000000000000-mapping.dmp

Download
memory/1396-58-0x0000000000000000-mapping.dmp

Download
memory/1424-55-0x0000000000000000-mapping.dmp

Download
memory/1732-59-0x0000000000400000-0x0000000000636000-memory.dmp

Filesize
2.2MB

Download
memory/1732-54-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

Download
memory/1732-57-0x0000000000260000-0x0000000000345000-memory.dmp

Filesize
916KB

Download
memory/1732-70-0x0000000000400000-0x0000000000636000-memory.dmp

Filesize
2.2MB

Download
memory/1944-67-0x0000000000000000-mapping.dmp

Download
memory/1956-63-0x0000000000000000-mapping.dmp

Download
memory/1956-69-0x0000000000400000-0x0000000000636000-memory.dmp

Filesize
2.2MB

Download
memory/1956-71-0x0000000000400000-0x0000000000636000-memory.dmp

Filesize
2.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads