darkcomet | c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d

General

Target

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Size

748KB
MD5

1455792a7bf29cc929014c720d999f90
SHA1

87b9a5187ed8684bcba977cb250d8fbdb5bd331f
SHA256

c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d
SHA512

6bdc25f97e3bcb54fe613e3dc51d4fef999677f95999e3d3d33fc25484befd6cc5922570dd91e195ae7c867f1ca8d15554cafe0c5f5ef2820b5d8036978e0fb0
SSDEEP

12288:mk0QVlhmPojAPTMEsUTg0oChO/Q2JbsbjPbN5qhRTtYe3f+Iw86k/9/+S:L0QRWoJEfg0oChGdJQbjPbNW5tYeP+G/

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

mathiasrats1.no-ip.org:1604

Mutex

DC_MUTEX-Z6H69NS

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
1jNHiSy22ogX
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:

1455792a7bf29cc929014c720d999f90_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\\Documents\\MSDCSC\\msdcsc.exe"	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\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:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3716 msdcsc.exe

pid	process
3716	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe

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

System Information Discovery
T1082
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2276 PING.EXE

pid	process
2276	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSecurityPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemtimePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeBackupPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeRestorePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeShutdownPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeDebugPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeUndockPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeManageVolumePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeImpersonatePrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 33	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 34	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 35	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: 36	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3716	msdcsc.exe
Token: SeSecurityPrivilege	3716	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3716	msdcsc.exe
Token: SeLoadDriverPrivilege	3716	msdcsc.exe
Token: SeSystemProfilePrivilege	3716	msdcsc.exe
Token: SeSystemtimePrivilege	3716	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3716	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3716	msdcsc.exe
Token: SeCreatePagefilePrivilege	3716	msdcsc.exe
Token: SeBackupPrivilege	3716	msdcsc.exe
Token: SeRestorePrivilege	3716	msdcsc.exe
Token: SeShutdownPrivilege	3716	msdcsc.exe
Token: SeDebugPrivilege	3716	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3716	msdcsc.exe
Token: SeChangeNotifyPrivilege	3716	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3716	msdcsc.exe
Token: SeUndockPrivilege	3716	msdcsc.exe
Token: SeManageVolumePrivilege	3716	msdcsc.exe
Token: SeImpersonatePrivilege	3716	msdcsc.exe
Token: SeCreateGlobalPrivilege	3716	msdcsc.exe
Token: 33	3716	msdcsc.exe
Token: 34	3716	msdcsc.exe
Token: 35	3716	msdcsc.exe
Token: 36	3716	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3716 msdcsc.exe

pid	process
3716	msdcsc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

1455792a7bf29cc929014c720d999f90_JaffaCakes118.execmd.exemsdcsc.exe

description	pid	process	target process
PID 8 wrote to memory of 3832	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 8 wrote to memory of 3832	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 8 wrote to memory of 3832	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	cmd.exe
PID 8 wrote to memory of 3716	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 8 wrote to memory of 3716	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 8 wrote to memory of 3716	8	1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe	msdcsc.exe
PID 3832 wrote to memory of 2276	3832	cmd.exe	PING.EXE
PID 3832 wrote to memory of 2276	3832	cmd.exe	PING.EXE
PID 3832 wrote to memory of 2276	3832	cmd.exe	PING.EXE
PID 3716 wrote to memory of 1992	3716	msdcsc.exe	iexplore.exe
PID 3716 wrote to memory of 1992	3716	msdcsc.exe	iexplore.exe
PID 3716 wrote to memory of 1992	3716	msdcsc.exe	iexplore.exe
PID 3716 wrote to memory of 4820	3716	msdcsc.exe	explorer.exe
PID 3716 wrote to memory of 4820	3716	msdcsc.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\1455792a7bf29cc929014c720d999f90_JaffaCakes118.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3832

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 4
3⤵
- Runs ping.exe
PID:2276

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3716

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:1992

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:4820

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1064,i,3549704109630749084,1975543916261970610,262144 --variations-seed-version --mojo-platform-channel-handle=1444 /prefetch:8
1⤵
PID:2032

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

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
748KB

MD5
1455792a7bf29cc929014c720d999f90

SHA1
87b9a5187ed8684bcba977cb250d8fbdb5bd331f

SHA256
c7a92e58954faf2a030b8be24bbe012e7fa95f8bf32d3e9cb04107208d8ff80d

SHA512
6bdc25f97e3bcb54fe613e3dc51d4fef999677f95999e3d3d33fc25484befd6cc5922570dd91e195ae7c867f1ca8d15554cafe0c5f5ef2820b5d8036978e0fb0

Download Submit
memory/8-0-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/8-13-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-19-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-21-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-16-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-17-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-18-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-14-0x0000000002090000-0x0000000002091000-memory.dmp

Filesize
4KB

Download
memory/3716-20-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-15-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-22-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-23-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-24-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-26-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-27-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3716-28-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads