darkcomet | cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e

General

Target

cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe
Size

284KB
MD5

d5a63e3923e6303bfddf09ad0ed4e180
SHA1

7116926ad42ba42e7cc029125e65ba7f7b30bcad
SHA256

cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e
SHA512

88edb26a18dec93e77c1ff3d2b2c9634b88edd1f334139bcf5a9986171d17c1b36fbd2b12901677cb29df5304257f0f7c2c70661777c3f5346e0effc43ca422c
SSDEEP

6144:aSMziw0/rI69JTH87oG2gAON1kBOFq8ApM9:aSMz0/L1YoLDLBc3ApM9

Score

10^/10

darkcomet darkcomet evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

DarkComet

C2

swixtor.no-ip.org:200

Mutex

DC_MUTEX-8T9CL5E

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
lq9FU6ZBn2HD
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:

test.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"	test.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Executes dropped EXE 2 IoCs

Processes:

test.exemsdcsc.exe

pid process

1900 test.exe
1312 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

1712 attrib.exe
2016 attrib.exe
Loads dropped DLL 2 IoCs

Processes:

test.exe

pid process

1900 test.exe
1900 test.exe

pid	process
1900	test.exe
1312	msdcsc.exe

pid	process
1712	attrib.exe
2016	attrib.exe

pid	process
1900	test.exe
1900	test.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

test.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	test.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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: CmdExeWriteProcessMemorySpam 1 IoCs

Processes:

test.exe

pid process

1900 test.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1312 msdcsc.exe

pid	process
1900	test.exe

pid	process
1312	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

test.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1900	test.exe
Token: SeSecurityPrivilege	1900	test.exe
Token: SeTakeOwnershipPrivilege	1900	test.exe
Token: SeLoadDriverPrivilege	1900	test.exe
Token: SeSystemProfilePrivilege	1900	test.exe
Token: SeSystemtimePrivilege	1900	test.exe
Token: SeProfSingleProcessPrivilege	1900	test.exe
Token: SeIncBasePriorityPrivilege	1900	test.exe
Token: SeCreatePagefilePrivilege	1900	test.exe
Token: SeBackupPrivilege	1900	test.exe
Token: SeRestorePrivilege	1900	test.exe
Token: SeShutdownPrivilege	1900	test.exe
Token: SeDebugPrivilege	1900	test.exe
Token: SeSystemEnvironmentPrivilege	1900	test.exe
Token: SeChangeNotifyPrivilege	1900	test.exe
Token: SeRemoteShutdownPrivilege	1900	test.exe
Token: SeUndockPrivilege	1900	test.exe
Token: SeManageVolumePrivilege	1900	test.exe
Token: SeImpersonatePrivilege	1900	test.exe
Token: SeCreateGlobalPrivilege	1900	test.exe
Token: 33	1900	test.exe
Token: 34	1900	test.exe
Token: 35	1900	test.exe
Token: SeIncreaseQuotaPrivilege	1312	msdcsc.exe
Token: SeSecurityPrivilege	1312	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1312	msdcsc.exe
Token: SeLoadDriverPrivilege	1312	msdcsc.exe
Token: SeSystemProfilePrivilege	1312	msdcsc.exe
Token: SeSystemtimePrivilege	1312	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1312	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1312	msdcsc.exe
Token: SeCreatePagefilePrivilege	1312	msdcsc.exe
Token: SeBackupPrivilege	1312	msdcsc.exe
Token: SeRestorePrivilege	1312	msdcsc.exe
Token: SeShutdownPrivilege	1312	msdcsc.exe
Token: SeDebugPrivilege	1312	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1312	msdcsc.exe
Token: SeChangeNotifyPrivilege	1312	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1312	msdcsc.exe
Token: SeUndockPrivilege	1312	msdcsc.exe
Token: SeManageVolumePrivilege	1312	msdcsc.exe
Token: SeImpersonatePrivilege	1312	msdcsc.exe
Token: SeCreateGlobalPrivilege	1312	msdcsc.exe
Token: 33	1312	msdcsc.exe
Token: 34	1312	msdcsc.exe
Token: 35	1312	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1312 msdcsc.exe

pid	process
1312	msdcsc.exe

Suspicious use of WriteProcessMemory 50 IoCs

Processes:

cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.execmd.exetest.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 316 wrote to memory of 1896	316	cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe	cmd.exe
PID 316 wrote to memory of 1896	316	cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe	cmd.exe
PID 316 wrote to memory of 1896	316	cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe	cmd.exe
PID 1896 wrote to memory of 1900	1896	cmd.exe	test.exe
PID 1896 wrote to memory of 1900	1896	cmd.exe	test.exe
PID 1896 wrote to memory of 1900	1896	cmd.exe	test.exe
PID 1896 wrote to memory of 1900	1896	cmd.exe	test.exe
PID 1900 wrote to memory of 1084	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 1084	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 1084	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 1084	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 892	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 892	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 892	1900	test.exe	cmd.exe
PID 1900 wrote to memory of 892	1900	test.exe	cmd.exe
PID 1084 wrote to memory of 1712	1084	cmd.exe	attrib.exe
PID 1084 wrote to memory of 1712	1084	cmd.exe	attrib.exe
PID 1084 wrote to memory of 1712	1084	cmd.exe	attrib.exe
PID 1084 wrote to memory of 1712	1084	cmd.exe	attrib.exe
PID 892 wrote to memory of 2016	892	cmd.exe	attrib.exe
PID 892 wrote to memory of 2016	892	cmd.exe	attrib.exe
PID 892 wrote to memory of 2016	892	cmd.exe	attrib.exe
PID 892 wrote to memory of 2016	892	cmd.exe	attrib.exe
PID 1900 wrote to memory of 1312	1900	test.exe	msdcsc.exe
PID 1900 wrote to memory of 1312	1900	test.exe	msdcsc.exe
PID 1900 wrote to memory of 1312	1900	test.exe	msdcsc.exe
PID 1900 wrote to memory of 1312	1900	test.exe	msdcsc.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe
PID 1312 wrote to memory of 1220	1312	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1712 attrib.exe
2016 attrib.exe

pid	process
1712	attrib.exe
2016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe
"C:\Users\Admin\AppData\Local\Temp\cdcbef9468496cd757f531e70ae814364734e7e06fb1685b41768b8cb3a13b3e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:316

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\9EEF.tmp\KeepThis.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:1896

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\test.exe" +s +h
4⤵
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\test.exe" +s +h
5⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1712

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
4⤵
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
5⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2016

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- 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:1312

C:\Windows\SysWOW64\notepad.exe
notepad
5⤵
PID:1220

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

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\AppData\Local\Temp\9EEF.tmp\KeepThis.bat
Filesize
39B

MD5
ff6557c86f258c3aec17f15579a7cc97

SHA1
feeb0a498b3f851a939b0e09fc8967a732fc2242

SHA256
36314ae3076f7de0aed8346749ec3b335aeea8be1fe564d14d689f067f424322

SHA512
d898d80623b5bc92cc7427dcfeb55ce337d6155eb99991e5686cdcea230d5a64bbb642337542e08905024d50156de7547b8f24c16882ec78ba90e5e022244925

Download Submit
C:\Users\Admin\AppData\Local\Temp\test.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
C:\Users\Admin\AppData\Local\Temp\test.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
68792f72501d008e36a4c1a6fdcf163f

SHA1
30d8bc4f8f812369158b464830ef27ff4dbca7a3

SHA256
ef83b9ca6a9bae7b25d5413051e26fc4ed2af32eef7b61c4a15a6ce9cf80f6ea

SHA512
8a34149c1aa77856a7e42010cb5469b63c027346a2bb8c3ae23cb8a64cf24a1a4b5521bf2ba892fdceaac20851a49b849d41231dd740439c2b2ce5f5cc0ee32a

Download Submit
memory/316-61-0x0000000140000000-0x00000001400C3000-memory.dmp

Filesize
780KB

Download
memory/316-54-0x000007FEFBD81000-0x000007FEFBD83000-memory.dmp

Filesize
8KB

Download
memory/892-63-0x0000000000000000-mapping.dmp

Download
memory/1084-62-0x0000000000000000-mapping.dmp

Download
memory/1220-72-0x0000000000000000-mapping.dmp

Download
memory/1312-68-0x0000000000000000-mapping.dmp

Download
memory/1712-64-0x0000000000000000-mapping.dmp

Download
memory/1896-55-0x0000000000000000-mapping.dmp

Download
memory/1900-60-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/1900-58-0x0000000000000000-mapping.dmp

Download
memory/2016-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads