darkcomet | 4c9e11389a51bbb1538c3c57a469be9256812e9be5ced4f06ba6c100668ddde1

General

Target

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Size

252KB
MD5

27f2bffd80e144f0b738ff6659c3b8c3
SHA1

388aff586e3ec2c5c862596ec16abdfdbdfcb98f
SHA256

4c9e11389a51bbb1538c3c57a469be9256812e9be5ced4f06ba6c100668ddde1
SHA512

a57f5163ef3d35d000b0f9d5caf84a65ebce2d3cdfe61468fb13d976541caab106c9fab32392c4826e5bedd87ae29c9a0eb53e4281bec0f0d0e856b6660be1c2
SSDEEP

6144:DcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQU:DcWkbgTYWnYnt/IDYhPJ

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-15PZK2D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
WXuth936C97A
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

T1547.004

Modify Registry

T1112

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

2136 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2676 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

pid process

2284 27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
2284 27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

pid	process
2136	notepad.exe

pid	process
2676	msdcsc.exe

pid	process
2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

UPX packed file 13 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2284-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
behavioral1/memory/2284-30-0x0000000004070000-0x0000000004127000-memory.dmp	upx
behavioral1/memory/2284-37-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-39-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-40-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-41-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-43-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-44-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-47-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-50-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-51-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2676-52-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSecurityPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeBackupPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeRestorePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeShutdownPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeDebugPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeUndockPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 33	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 34	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 35	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2676	msdcsc.exe
Token: SeSecurityPrivilege	2676	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2676	msdcsc.exe
Token: SeLoadDriverPrivilege	2676	msdcsc.exe
Token: SeSystemProfilePrivilege	2676	msdcsc.exe
Token: SeSystemtimePrivilege	2676	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2676	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2676	msdcsc.exe
Token: SeCreatePagefilePrivilege	2676	msdcsc.exe
Token: SeBackupPrivilege	2676	msdcsc.exe
Token: SeRestorePrivilege	2676	msdcsc.exe
Token: SeShutdownPrivilege	2676	msdcsc.exe
Token: SeDebugPrivilege	2676	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2676	msdcsc.exe
Token: SeChangeNotifyPrivilege	2676	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2676	msdcsc.exe
Token: SeUndockPrivilege	2676	msdcsc.exe
Token: SeManageVolumePrivilege	2676	msdcsc.exe
Token: SeImpersonatePrivilege	2676	msdcsc.exe
Token: SeCreateGlobalPrivilege	2676	msdcsc.exe
Token: 33	2676	msdcsc.exe
Token: 34	2676	msdcsc.exe
Token: 35	2676	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2676 msdcsc.exe

pid	process
2676	msdcsc.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

description	pid	process	target process
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2136	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 2284 wrote to memory of 2676	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe
PID 2284 wrote to memory of 2676	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe
PID 2284 wrote to memory of 2676	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe
PID 2284 wrote to memory of 2676	2284	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2284

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:2136

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2676

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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
27f2bffd80e144f0b738ff6659c3b8c3

SHA1
388aff586e3ec2c5c862596ec16abdfdbdfcb98f

SHA256
4c9e11389a51bbb1538c3c57a469be9256812e9be5ced4f06ba6c100668ddde1

SHA512
a57f5163ef3d35d000b0f9d5caf84a65ebce2d3cdfe61468fb13d976541caab106c9fab32392c4826e5bedd87ae29c9a0eb53e4281bec0f0d0e856b6660be1c2

Download Submit
memory/2136-5-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2136-25-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2284-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2284-1-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2284-30-0x0000000004070000-0x0000000004127000-memory.dmp

Filesize
732KB

Download
memory/2284-34-0x0000000004070000-0x0000000004127000-memory.dmp

Filesize
732KB

Download
memory/2284-37-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-39-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-40-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-41-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-43-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-44-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-47-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-50-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-51-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2676-52-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads