darkcomet | aa8881fdcaa08ae11809accd75aa3a17c59cc1d711927bcef1210502dc99464f

General

Target

FPSgamefix.exe
Size

251KB
MD5

3f17ff4d31f35de16855e3a500c254c9
SHA1

ebeb7aa5f9fe1d8288277d11918f06525a3c7dc7
SHA256

aa8881fdcaa08ae11809accd75aa3a17c59cc1d711927bcef1210502dc99464f
SHA512

cb3dad781a54aadbb600c46c76b58a8f02f5a6e93eb368d6d83165f59db2f5007ec6d9617a2621fb0920f9d99f0964e2c61b4b84d5abe85211b7dd2eb084f62e
SSDEEP

6144:1cNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37Vkv:1cW7KEZlPzCy37Vw

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

8.tcp.us-cal-1.ngrok.io:14496

4.tcp.us-cal-1.ngrok.io:12688

Mutex

DC_MUTEX-54YN9CA

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
XMXbcA0sjT4Y
install
true
offline_keylogger
true
password
skidhunt1337
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:

FPSgamefix.exe

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

FPSgamefix.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4068299709-2976237847-2753307267-1000\Control Panel\International\Geo\Nation	FPSgamefix.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

1232 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4556 msdcsc.exe

pid	process
1232	notepad.exe

pid	process
4556	msdcsc.exe

UPX packed file 14 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/364-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe	upx
behavioral1/memory/4556-56-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/364-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/4556-72-0x0000000000400000-0x00000000004B7000-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:

FPSgamefix.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4068299709-2976237847-2753307267-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	FPSgamefix.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4068299709-2976237847-2753307267-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service
T1102

Processes:

flow ioc

13 4.tcp.us-cal-1.ngrok.io
147 8.tcp.us-cal-1.ngrok.io
155 4.tcp.us-cal-1.ngrok.io
2 8.tcp.us-cal-1.ngrok.io
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:

FPSgamefix.exe

description ioc process

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

flow	ioc
13	4.tcp.us-cal-1.ngrok.io
147	8.tcp.us-cal-1.ngrok.io
155	4.tcp.us-cal-1.ngrok.io
2	8.tcp.us-cal-1.ngrok.io

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

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

FPSgamefix.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	364	FPSgamefix.exe
Token: SeSecurityPrivilege	364	FPSgamefix.exe
Token: SeTakeOwnershipPrivilege	364	FPSgamefix.exe
Token: SeLoadDriverPrivilege	364	FPSgamefix.exe
Token: SeSystemProfilePrivilege	364	FPSgamefix.exe
Token: SeSystemtimePrivilege	364	FPSgamefix.exe
Token: SeProfSingleProcessPrivilege	364	FPSgamefix.exe
Token: SeIncBasePriorityPrivilege	364	FPSgamefix.exe
Token: SeCreatePagefilePrivilege	364	FPSgamefix.exe
Token: SeBackupPrivilege	364	FPSgamefix.exe
Token: SeRestorePrivilege	364	FPSgamefix.exe
Token: SeShutdownPrivilege	364	FPSgamefix.exe
Token: SeDebugPrivilege	364	FPSgamefix.exe
Token: SeSystemEnvironmentPrivilege	364	FPSgamefix.exe
Token: SeChangeNotifyPrivilege	364	FPSgamefix.exe
Token: SeRemoteShutdownPrivilege	364	FPSgamefix.exe
Token: SeUndockPrivilege	364	FPSgamefix.exe
Token: SeManageVolumePrivilege	364	FPSgamefix.exe
Token: SeImpersonatePrivilege	364	FPSgamefix.exe
Token: SeCreateGlobalPrivilege	364	FPSgamefix.exe
Token: 33	364	FPSgamefix.exe
Token: 34	364	FPSgamefix.exe
Token: 35	364	FPSgamefix.exe
Token: 36	364	FPSgamefix.exe
Token: SeIncreaseQuotaPrivilege	4556	msdcsc.exe
Token: SeSecurityPrivilege	4556	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4556	msdcsc.exe
Token: SeLoadDriverPrivilege	4556	msdcsc.exe
Token: SeSystemProfilePrivilege	4556	msdcsc.exe
Token: SeSystemtimePrivilege	4556	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4556	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4556	msdcsc.exe
Token: SeCreatePagefilePrivilege	4556	msdcsc.exe
Token: SeBackupPrivilege	4556	msdcsc.exe
Token: SeRestorePrivilege	4556	msdcsc.exe
Token: SeShutdownPrivilege	4556	msdcsc.exe
Token: SeDebugPrivilege	4556	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4556	msdcsc.exe
Token: SeChangeNotifyPrivilege	4556	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4556	msdcsc.exe
Token: SeUndockPrivilege	4556	msdcsc.exe
Token: SeManageVolumePrivilege	4556	msdcsc.exe
Token: SeImpersonatePrivilege	4556	msdcsc.exe
Token: SeCreateGlobalPrivilege	4556	msdcsc.exe
Token: 33	4556	msdcsc.exe
Token: 34	4556	msdcsc.exe
Token: 35	4556	msdcsc.exe
Token: 36	4556	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4556 msdcsc.exe

pid	process
4556	msdcsc.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

FPSgamefix.exemsdcsc.exe

description	pid	process	target process
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 1232	364	FPSgamefix.exe	notepad.exe
PID 364 wrote to memory of 4556	364	FPSgamefix.exe	msdcsc.exe
PID 364 wrote to memory of 4556	364	FPSgamefix.exe	msdcsc.exe
PID 364 wrote to memory of 4556	364	FPSgamefix.exe	msdcsc.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe
PID 4556 wrote to memory of 2308	4556	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\FPSgamefix.exe
"C:\Users\Admin\AppData\Local\Temp\FPSgamefix.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:364
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  PID:1232
- C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

Filesize
251KB

MD5
3f17ff4d31f35de16855e3a500c254c9

SHA1
ebeb7aa5f9fe1d8288277d11918f06525a3c7dc7

SHA256
aa8881fdcaa08ae11809accd75aa3a17c59cc1d711927bcef1210502dc99464f

SHA512
cb3dad781a54aadbb600c46c76b58a8f02f5a6e93eb368d6d83165f59db2f5007ec6d9617a2621fb0920f9d99f0964e2c61b4b84d5abe85211b7dd2eb084f62e

Download Submit
memory/364-1-0x0000000000AB0000-0x0000000000AB1000-memory.dmp

Filesize
4KB

Download
memory/364-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/364-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1232-4-0x00000000028E0000-0x00000000028E1000-memory.dmp

Filesize
4KB

Download
memory/2308-59-0x0000000003130000-0x0000000003131000-memory.dmp

Filesize
4KB

Download
memory/4556-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-58-0x0000000000630000-0x0000000000631000-memory.dmp

Filesize
4KB

Download
memory/4556-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4556-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads