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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

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:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

2472 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3968 msdcsc.exe

pid	process
2472	notepad.exe

pid	process
3968	msdcsc.exe

UPX packed file 14 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1780-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
behavioral2/memory/3968-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1780-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3968-79-0x0000000000400000-0x00000000004B7000-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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\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

Modifies registry class 1 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSecurityPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeBackupPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeRestorePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeShutdownPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeDebugPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeUndockPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 33	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 34	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 35	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: 36	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3968	msdcsc.exe
Token: SeSecurityPrivilege	3968	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3968	msdcsc.exe
Token: SeLoadDriverPrivilege	3968	msdcsc.exe
Token: SeSystemProfilePrivilege	3968	msdcsc.exe
Token: SeSystemtimePrivilege	3968	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3968	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3968	msdcsc.exe
Token: SeCreatePagefilePrivilege	3968	msdcsc.exe
Token: SeBackupPrivilege	3968	msdcsc.exe
Token: SeRestorePrivilege	3968	msdcsc.exe
Token: SeShutdownPrivilege	3968	msdcsc.exe
Token: SeDebugPrivilege	3968	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3968	msdcsc.exe
Token: SeChangeNotifyPrivilege	3968	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3968	msdcsc.exe
Token: SeUndockPrivilege	3968	msdcsc.exe
Token: SeManageVolumePrivilege	3968	msdcsc.exe
Token: SeImpersonatePrivilege	3968	msdcsc.exe
Token: SeCreateGlobalPrivilege	3968	msdcsc.exe
Token: 33	3968	msdcsc.exe
Token: 34	3968	msdcsc.exe
Token: 35	3968	msdcsc.exe
Token: 36	3968	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3968 msdcsc.exe

pid	process
3968	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe

description	pid	process	target process
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 2472	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	notepad.exe
PID 1780 wrote to memory of 3968	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe
PID 1780 wrote to memory of 3968	1780	27f2bffd80e144f0b738ff6659c3b8c3_JaffaCakes118.exe	msdcsc.exe
PID 1780 wrote to memory of 3968	1780	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
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:2472

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:3968

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
27f2bffd80e144f0b738ff6659c3b8c3

SHA1
388aff586e3ec2c5c862596ec16abdfdbdfcb98f

SHA256
4c9e11389a51bbb1538c3c57a469be9256812e9be5ced4f06ba6c100668ddde1

SHA512
a57f5163ef3d35d000b0f9d5caf84a65ebce2d3cdfe61468fb13d976541caab106c9fab32392c4826e5bedd87ae29c9a0eb53e4281bec0f0d0e856b6660be1c2

Download Submit
memory/1780-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1780-1-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/1780-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2472-5-0x0000000000610000-0x0000000000611000-memory.dmp

Filesize
4KB

Download
memory/3968-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-65-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/3968-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3968-79-0x0000000000400000-0x00000000004B7000-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