darkcomet | 8ff1ef963f68b60dfc4a3116e308b57449400791280dd2b21a4b8727aaa9c33a

General

Target

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Size

251KB
MD5

5f416b178d8d810f5d4278290a2bd00c
SHA1

ff151d7e84772e85f0c8f94680bc09aea1e8eb21
SHA256

8ff1ef963f68b60dfc4a3116e308b57449400791280dd2b21a4b8727aaa9c33a
SHA512

0a4cba14d009833f2e8c5d27f67de960c77937a6c8a1a865f29ff579595dea0af9970c0daaad0031074d7530ee456a47029addeea5a33063cf044673c36217c5
SSDEEP

6144:lcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37:lcW7KEZlPzCy37

Score

10^/10

darkcomet unkown evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

unkown

C2

78.29.9.28:12345

Mutex

DC_MUTEX-YK73YNE

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
7oqLDrdDz3He
install
true
offline_keylogger
true
persistence
false
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

T1547.004

Modify Registry

T1112

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe"	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

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

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

1908 attrib.exe
4052 attrib.exe

pid	process
1908	attrib.exe
4052	attrib.exe

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

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3524 msdcsc.exe

pid	process
3524	msdcsc.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4904-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
behavioral2/memory/4904-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3524-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

description	ioc	process
File created	C:\Windows\MSDCSC\msdcsc.exe	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
File opened for modification	C:\Windows\MSDCSC\	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

3524 msdcsc.exe

pid	process
3524	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeSecurityPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeBackupPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeRestorePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeShutdownPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeDebugPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeUndockPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: 33	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: 34	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: 35	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: 36	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3524	msdcsc.exe
Token: SeSecurityPrivilege	3524	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3524	msdcsc.exe
Token: SeLoadDriverPrivilege	3524	msdcsc.exe
Token: SeSystemProfilePrivilege	3524	msdcsc.exe
Token: SeSystemtimePrivilege	3524	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3524	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3524	msdcsc.exe
Token: SeCreatePagefilePrivilege	3524	msdcsc.exe
Token: SeBackupPrivilege	3524	msdcsc.exe
Token: SeRestorePrivilege	3524	msdcsc.exe
Token: SeShutdownPrivilege	3524	msdcsc.exe
Token: SeDebugPrivilege	3524	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3524	msdcsc.exe
Token: SeChangeNotifyPrivilege	3524	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3524	msdcsc.exe
Token: SeUndockPrivilege	3524	msdcsc.exe
Token: SeManageVolumePrivilege	3524	msdcsc.exe
Token: SeImpersonatePrivilege	3524	msdcsc.exe
Token: SeCreateGlobalPrivilege	3524	msdcsc.exe
Token: 33	3524	msdcsc.exe
Token: 34	3524	msdcsc.exe
Token: 35	3524	msdcsc.exe
Token: 36	3524	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3524 msdcsc.exe

pid	process
3524	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4904 wrote to memory of 528	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 4904 wrote to memory of 528	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 4904 wrote to memory of 528	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 4904 wrote to memory of 348	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 4904 wrote to memory of 348	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 4904 wrote to memory of 348	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	cmd.exe
PID 528 wrote to memory of 1908	528	cmd.exe	attrib.exe
PID 528 wrote to memory of 1908	528	cmd.exe	attrib.exe
PID 528 wrote to memory of 1908	528	cmd.exe	attrib.exe
PID 348 wrote to memory of 4052	348	cmd.exe	attrib.exe
PID 348 wrote to memory of 4052	348	cmd.exe	attrib.exe
PID 348 wrote to memory of 4052	348	cmd.exe	attrib.exe
PID 4904 wrote to memory of 3524	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	msdcsc.exe
PID 4904 wrote to memory of 3524	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	msdcsc.exe
PID 4904 wrote to memory of 3524	4904	5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe	msdcsc.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe
PID 3524 wrote to memory of 4436	3524	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

1908 attrib.exe
4052 attrib.exe

pid	process
1908	attrib.exe
4052	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4904

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:528

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\5f416b178d8d810f5d4278290a2bd00c_JaffaCakes118.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1908

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:348

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4052

C:\Windows\MSDCSC\msdcsc.exe
"C:\Windows\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3524

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4436

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\MSDCSC\msdcsc.exe
Filesize
251KB

MD5
5f416b178d8d810f5d4278290a2bd00c

SHA1
ff151d7e84772e85f0c8f94680bc09aea1e8eb21

SHA256
8ff1ef963f68b60dfc4a3116e308b57449400791280dd2b21a4b8727aaa9c33a

SHA512
0a4cba14d009833f2e8c5d27f67de960c77937a6c8a1a865f29ff579595dea0af9970c0daaad0031074d7530ee456a47029addeea5a33063cf044673c36217c5

Download Submit
memory/3524-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-63-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/3524-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3524-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4436-64-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/4904-1-0x00000000023D0000-0x00000000023D1000-memory.dmp

Filesize
4KB

Download
memory/4904-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4904-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads